Updated version and assets for release v21.04.6

Allows someone using the theme system to configure the social driver
before a redirect action occurs, by passing a callback as an additional
param to the theme 'addSocialDriver' method.

.env.example.complete

@@ -51,7 +51,7 @@ DB_USERNAME=database_username
 DB_PASSWORD=database_user_password
 
 # Mail system to use
-# Can be 'smtp', 'mail' or 'sendmail'
+# Can be 'smtp' or 'sendmail'
 MAIL_DRIVER=smtp
 
 # Mail sending options
@@ -195,6 +195,7 @@ LDAP_DN=false
 LDAP_PASS=false
 LDAP_USER_FILTER=false
 LDAP_VERSION=false
+LDAP_START_TLS=false
 LDAP_TLS_INSECURE=false
 LDAP_ID_ATTRIBUTE=uid
 LDAP_EMAIL_ATTRIBUTE=mail
@@ -221,6 +222,7 @@ SAML2_IDP_x509=null
 SAML2_ONELOGIN_OVERRIDES=null
 SAML2_DUMP_USER_DETAILS=false
 SAML2_AUTOLOAD_METADATA=false
+SAML2_IDP_AUTHNCONTEXT=true
 
 # SAML group sync configuration
 # Refer to https://www.bookstackapp.com/docs/admin/saml2-auth/
@@ -245,16 +247,29 @@ AVATAR_URL=
 DRAWIO=true
 
 # Default item listing view
-# Used for public visitors and user's without a preference
-# Can be 'list' or 'grid'
+# Used for public visitors and user's without a preference.
+# Can be 'list' or 'grid'.
 APP_VIEWS_BOOKS=list
 APP_VIEWS_BOOKSHELVES=grid
+APP_VIEWS_BOOKSHELF=grid
+
+# Use dark mode by default
+# Will be overriden by any user/session preference.
+APP_DEFAULT_DARK_MODE=false
 
 # Page revision limit
 # Number of page revisions to keep in the system before deleting old revisions.
 # If set to 'false' a limit will not be enforced.
 REVISION_LIMIT=50
 
+# Recycle Bin Lifetime
+# The number of days that content will remain in the recycle bin before
+# being considered for auto-removal. It is not a guarantee that content will
+# be removed after this time.
+# Set to 0 for no recycle bin functionality.
+# Set to -1 for unlimited recycle bin lifetime.
+RECYCLE_BIN_LIFETIME=30
+
 # Allow <script> tags in page content
 # Note, if set to 'true' the page editor may still escape scripts.
 ALLOW_CONTENT_SCRIPTS=false
@@ -265,6 +280,12 @@ ALLOW_CONTENT_SCRIPTS=false
 # Contents of the robots.txt file can be overridden, making this option obsolete.
 ALLOW_ROBOTS=null
 
+# A list of hosts that BookStack can be iframed within.
+# Space separated if multiple. BookStack host domain is auto-inferred.
+# For Example: ALLOWED_IFRAME_HOSTS="https://example.com https://a.example.com"
+# Setting this option will also auto-adjust cookies to be SameSite=None.
+ALLOWED_IFRAME_HOSTS=null
+
 # The default and maximum item-counts for listing API requests.
 API_DEFAULT_ITEM_COUNT=100
 API_MAX_ITEM_COUNT=500

.github/FUNDING.yml

@@ -0,0 +1,3 @@
+# These are supported funding model platforms
+
+github: [ssddanbrown]

.github/ISSUE_TEMPLATE/api_request.md

@@ -0,0 +1,17 @@
+---
+name: New API Endpoint or Feature
+about: Request a new endpoint or API feature be added
+labels: ":nut_and_bolt: API Request"
+---
+
+#### API Endpoint or Feature
+
+Clearly describe what you'd like to have added to the API. 
+
+#### Use-Case
+
+Explain the use-case that you're working-on that requires the above request.
+
+#### Additional Context
+
+If required, add any other context about the feature request here.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,9 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Discord chat support
+    url: https://discord.gg/ztkBqR2
+    about: Realtime support / chat with the community and the team.
+
+  - name: Debugging & Common Issues
+    url: https://www.bookstackapp.com/docs/admin/debugging/
+    about: Find details on how to debug issues and view common issues with thier resolutions.

.github/translators.txt

@@ -49,6 +49,12 @@ Name :: Languages
 @jzoy :: Simplified Chinese
 @ististudio :: Korean
 @leomartinez :: Spanish Argentina
+@geins :: German
+@Ereza :: Catalan
+@benediktvolke :: German
+@Baptistou :: French
+@arcoai :: Spanish
+@Jokuna :: Korean
 cipi1965 :: Italian
 Mykola Ronik (Mantikor) :: Ukrainian
 furkanoyk :: Turkish
@@ -123,3 +129,39 @@ Jakub Bouček (jakubboucek) :: Czech
 Marco (cdrfun) :: German
 10935336 :: Chinese Simplified
 孟繁阳 (FanyangMeng) :: Chinese Simplified
+Andrej Močan (andrejm) :: Slovenian
+gilane9_ :: Arabic
+Raed alnahdi (raednahdi) :: Arabic
+Xiphoseer :: German
+MerlinSVK (merlinsvk) :: Slovak
+Kauê Sena (kaue.sena.ks) :: Portuguese, Brazilian
+MatthieuParis :: French
+Douradinho :: Portuguese, Brazilian
+Gaku Yaguchi (tama11) :: Japanese
+johnroyer :: Chinese Traditional
+jackaaa :: Chinese Traditional
+Irfan Hukama Arsyad (IrfanArsyad) :: Indonesian
+Jeff Huang (s8321414) :: Chinese Traditional
+Luís Tiago Favas (starkyller) :: Portuguese
+semirte :: Bosnian
+aarchijs :: Latvian
+Martins Pilsetnieks (pilsetnieks) :: Latvian
+Yonatan Magier (yonatanmgr) :: Hebrew
+FastHogi :: German Informal; German
+Ole Anders (Swoy) :: Norwegian Bokmal
+Atlochowski (atlochowski) :: Polish
+Simon (DefaultSimon) :: Slovenian
+Reinis Mednis (Mednis) :: Latvian
+toisho (toishoki) :: Turkish
+nikservik :: Ukrainian; Russian; Polish
+HenrijsS :: Latvian
+Pascal R-B (pborgner) :: German
+Boris (Ginfred) :: Russian
+Jonas Anker Rasmussen (jonasanker) :: Danish
+Gerwin de Keijzer (gdekeijzer) :: Dutch; German Informal; German
+kometchtech :: Japanese
+Auri (Atalonica) :: Catalan
+Francesco Franchina (ffranchina) :: Italian
+Aimrane Kds (aimrane.kds) :: Arabic
+whenwesober :: Indonesian
+Rem (remkovdhoef) :: Dutch

.github/workflows/phpunit.yml

@@ -5,6 +5,7 @@ on:
     branches:
       - master
       - release
+      - gh_actions_update
   pull_request:
     branches:
       - '*'
@@ -13,13 +14,19 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
-        php: [7.2, 7.4]
+        php: ['7.3', '7.4', '8.0']
     steps:
     - uses: actions/checkout@v1
 
+    - name: Setup PHP
+      uses: shivammathur/setup-php@b7d1d9c9a92d8d8463ce36d7f60da34d461724f8
+      with:
+        php-version: ${{ matrix.php }}
+        extensions: gd, mbstring, json, curl, xml, mysql, ldap
+
     - name: Get Composer Cache Directory
       id: composer-cache
       run: |
@@ -38,7 +45,7 @@ jobs:
     - name: Setup Database
       run: |
         mysql -uroot -proot -e 'CREATE DATABASE IF NOT EXISTS `bookstack-test`;'
-        mysql -uroot -proot -e "CREATE USER 'bookstack-test'@'localhost' IDENTIFIED BY 'bookstack-test';"
+        mysql -uroot -proot -e "CREATE USER 'bookstack-test'@'localhost' IDENTIFIED WITH mysql_native_password BY 'bookstack-test';"
         mysql -uroot -proot -e "GRANT ALL ON \`bookstack-test\`.* TO 'bookstack-test'@'localhost';"
         mysql -uroot -proot -e 'FLUSH PRIVILEGES;'
 

.github/workflows/test-migrations.yml

@@ -5,6 +5,7 @@ on:
     branches:
       - master
       - release
+      - gh_actions_update
   pull_request:
     branches:
       - '*'
@@ -13,13 +14,19 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
-        php: [7.2, 7.4]
+        php: ['7.3', '7.4', '8.0']
     steps:
       - uses: actions/checkout@v1
 
+      - name: Setup PHP
+        uses: shivammathur/setup-php@b7d1d9c9a92d8d8463ce36d7f60da34d461724f8
+        with:
+          php-version: ${{ matrix.php }}
+          extensions: gd, mbstring, json, curl, xml, mysql, ldap
+
       - name: Get Composer Cache Directory
         id: composer-cache
         run: |
@@ -38,7 +45,7 @@ jobs:
       - name: Create database & user
         run: |
           mysql -uroot -proot -e 'CREATE DATABASE IF NOT EXISTS `bookstack-test`;'
-          mysql -uroot -proot -e "CREATE USER 'bookstack-test'@'localhost' IDENTIFIED BY 'bookstack-test';"
+          mysql -uroot -proot -e "CREATE USER 'bookstack-test'@'localhost' IDENTIFIED WITH mysql_native_password BY 'bookstack-test';"
           mysql -uroot -proot -e "GRANT ALL ON \`bookstack-test\`.* TO 'bookstack-test'@'localhost';"
           mysql -uroot -proot -e 'FLUSH PRIVILEGES;'
 

app/Actions/Activity.php

@@ -3,18 +3,20 @@
 namespace BookStack\Actions;
 
 use BookStack\Auth\User;
-use BookStack\Entities\Entity;
+use BookStack\Entities\Models\Entity;
 use BookStack\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\MorphTo;
+use Illuminate\Support\Str;
 
 /**
- * @property string $key
+ * @property string $type
  * @property User $user
  * @property Entity $entity
- * @property string $extra
+ * @property string $detail
  * @property string $entity_type
  * @property int $entity_id
  * @property int $user_id
- * @property int $book_id
  */
 class Activity extends Model
 {
@@ -22,7 +24,7 @@ class Activity extends Model
     /**
      * Get the entity for this activity.
      */
-    public function entity()
+    public function entity(): MorphTo
     {
         if ($this->entity_type === '') {
             $this->entity_type = null;
@@ -32,20 +34,28 @@ class Activity extends Model
 
     /**
      * Get the user this activity relates to.
-     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
      */
-    public function user()
+    public function user(): BelongsTo
     {
         return $this->belongsTo(User::class);
     }
 
     /**
-     * Returns text from the language files, Looks up by using the
-     * activity key.
+     * Returns text from the language files, Looks up by using the activity key.
      */
-    public function getText()
+    public function getText(): string
     {
-        return trans('activities.' . $this->key);
+        return trans('activities.' . $this->type);
+    }
+
+    /**
+     * Check if this activity is intended to be for an entity.
+     */
+    public function isForEntity(): bool
+    {
+        return Str::startsWith($this->type, [
+            'page_', 'chapter_', 'book_', 'bookshelf_'
+        ]);
     }
 
     /**
@@ -53,6 +63,6 @@ class Activity extends Model
      */
     public function isSimilarTo(Activity $activityB): bool
     {
-        return [$this->key, $this->entity_type, $this->entity_id] === [$activityB->key, $activityB->entity_type, $activityB->entity_id];
+        return [$this->type, $this->entity_type, $this->entity_id] === [$activityB->type, $activityB->entity_type, $activityB->entity_id];
     }
 }

app/Actions/ActivityService.php

@@ -2,57 +2,59 @@
 
 use BookStack\Auth\Permissions\PermissionService;
 use BookStack\Auth\User;
-use BookStack\Entities\Entity;
-use Illuminate\Support\Collection;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Models\Entity;
+use BookStack\Entities\Models\Page;
+use BookStack\Interfaces\Loggable;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\Relation;
 use Illuminate\Support\Facades\Log;
 
 class ActivityService
 {
     protected $activity;
-    protected $user;
     protected $permissionService;
 
-    /**
-     * ActivityService constructor.
-     */
     public function __construct(Activity $activity, PermissionService $permissionService)
     {
         $this->activity = $activity;
         $this->permissionService = $permissionService;
-        $this->user = user();
     }
 
     /**
-     * Add activity data to database.
+     * Add activity data to database for an entity.
      */
-    public function add(Entity $entity, string $activityKey, ?int $bookId = null)
+    public function addForEntity(Entity $entity, string $type)
     {
-        $activity = $this->newActivityForUser($activityKey, $bookId);
+        $activity = $this->newActivityForUser($type);
         $entity->activity()->save($activity);
-        $this->setNotification($activityKey);
+        $this->setNotification($type);
     }
 
     /**
-     * Adds a activity history with a message, without binding to a entity.
+     * Add a generic activity event to the database.
+     * @param string|Loggable $detail
      */
-    public function addMessage(string $activityKey, string $message, ?int $bookId = null)
+    public function add(string $type, $detail = '')
     {
-        $this->newActivityForUser($activityKey, $bookId)->forceFill([
-            'extra' => $message
-        ])->save();
+        if ($detail instanceof Loggable) {
+            $detail = $detail->logDescriptor();
+        }
 
-        $this->setNotification($activityKey);
+        $activity = $this->newActivityForUser($type);
+        $activity->detail = $detail;
+        $activity->save();
+        $this->setNotification($type);
     }
 
     /**
      * Get a new activity instance for the current user.
      */
-    protected function newActivityForUser(string $key, ?int $bookId = null): Activity
+    protected function newActivityForUser(string $type): Activity
     {
         return $this->activity->newInstance()->forceFill([
-            'key'     => strtolower($key),
-            'user_id' => $this->user->id,
-            'book_id' => $bookId ?? 0,
+            'type'     => strtolower($type),
+            'user_id' => user()->id,
         ]);
     }
 
@@ -61,15 +63,13 @@ class ActivityService
      * and instead uses the 'extra' field with the entities name.
      * Used when an entity is deleted.
      */
-    public function removeEntity(Entity $entity): Collection
+    public function removeEntity(Entity $entity)
     {
-        $activities = $entity->activity()->get();
         $entity->activity()->update([
-            'extra'       => $entity->name,
-            'entity_id'   => 0,
-            'entity_type' => '',
+            'detail'       => $entity->name,
+            'entity_id'   => null,
+            'entity_type' => null,
         ]);
-        return $activities;
     }
 
     /**
@@ -78,7 +78,7 @@ class ActivityService
     public function latest(int $count = 20, int $page = 0): array
     {
         $activityList = $this->permissionService
-            ->filterRestrictedEntityRelations($this->activity, 'activities', 'entity_id', 'entity_type')
+            ->filterRestrictedEntityRelations($this->activity->newQuery(), 'activities', 'entity_id', 'entity_type')
             ->orderBy('created_at', 'desc')
             ->with(['user', 'entity'])
             ->skip($count * $page)
@@ -94,17 +94,30 @@ class ActivityService
      */
     public function entityActivity(Entity $entity, int $count = 20, int $page = 1): array
     {
+        /** @var [string => int[]] $queryIds */
+        $queryIds = [$entity->getMorphClass() => [$entity->id]];
+
         if ($entity->isA('book')) {
-            $query = $this->activity->newQuery()->where('book_id', '=', $entity->id);
-        } else {
-            $query = $this->activity->newQuery()->where('entity_type', '=', $entity->getMorphClass())
-                ->where('entity_id', '=', $entity->id);
+            $queryIds[(new Chapter)->getMorphClass()] = $entity->chapters()->visible()->pluck('id');
+        }
+        if ($entity->isA('book') || $entity->isA('chapter')) {
+            $queryIds[(new Page)->getMorphClass()] = $entity->pages()->visible()->pluck('id');
         }
 
-        $activity = $this->permissionService
-            ->filterRestrictedEntityRelations($query, 'activities', 'entity_id', 'entity_type')
-            ->orderBy('created_at', 'desc')
-            ->with(['entity', 'user.avatar'])
+        $query = $this->activity->newQuery();
+        $query->where(function (Builder $query) use ($queryIds) {
+            foreach ($queryIds as $morphClass => $idArr) {
+                $query->orWhere(function (Builder $innerQuery) use ($morphClass, $idArr) {
+                    $innerQuery->where('entity_type', '=', $morphClass)
+                        ->whereIn('entity_id', $idArr);
+                });
+            }
+        });
+
+        $activity = $query->orderBy('created_at', 'desc')
+            ->with(['entity' => function (Relation $query) {
+                $query->withTrashed();
+            }, 'user.avatar'])
             ->skip($count * ($page - 1))
             ->take($count)
             ->get();
@@ -118,7 +131,7 @@ class ActivityService
     public function userActivity(User $user, int $count = 20, int $page = 0): array
     {
         $activityList = $this->permissionService
-            ->filterRestrictedEntityRelations($this->activity, 'activities', 'entity_id', 'entity_type')
+            ->filterRestrictedEntityRelations($this->activity->newQuery(), 'activities', 'entity_id', 'entity_type')
             ->orderBy('created_at', 'desc')
             ->where('user_id', '=', $user->id)
             ->skip($count * $page)
@@ -152,9 +165,9 @@ class ActivityService
     /**
      * Flashes a notification message to the session if an appropriate message is available.
      */
-    protected function setNotification(string $activityKey)
+    protected function setNotification(string $type)
     {
-        $notificationTextKey = 'activities.' . $activityKey . '_notification';
+        $notificationTextKey = 'activities.' . $type . '_notification';
         if (trans()->has($notificationTextKey)) {
             $message = trans($notificationTextKey);
             session()->flash('success', $message);

app/Actions/ActivityType.php

@@ -0,0 +1,51 @@
+<?php namespace BookStack\Actions;
+
+class ActivityType
+{
+    const PAGE_CREATE = 'page_create';
+    const PAGE_UPDATE = 'page_update';
+    const PAGE_DELETE = 'page_delete';
+    const PAGE_RESTORE = 'page_restore';
+    const PAGE_MOVE = 'page_move';
+
+    const CHAPTER_CREATE = 'chapter_create';
+    const CHAPTER_UPDATE = 'chapter_update';
+    const CHAPTER_DELETE = 'chapter_delete';
+    const CHAPTER_MOVE = 'chapter_move';
+
+    const BOOK_CREATE = 'book_create';
+    const BOOK_UPDATE = 'book_update';
+    const BOOK_DELETE = 'book_delete';
+    const BOOK_SORT = 'book_sort';
+
+    const BOOKSHELF_CREATE = 'bookshelf_create';
+    const BOOKSHELF_UPDATE = 'bookshelf_update';
+    const BOOKSHELF_DELETE = 'bookshelf_delete';
+
+    const COMMENTED_ON = 'commented_on';
+    const PERMISSIONS_UPDATE = 'permissions_update';
+
+    const SETTINGS_UPDATE = 'settings_update';
+    const MAINTENANCE_ACTION_RUN = 'maintenance_action_run';
+
+    const RECYCLE_BIN_EMPTY = 'recycle_bin_empty';
+    const RECYCLE_BIN_RESTORE = 'recycle_bin_restore';
+    const RECYCLE_BIN_DESTROY = 'recycle_bin_destroy';
+
+    const USER_CREATE = 'user_create';
+    const USER_UPDATE = 'user_update';
+    const USER_DELETE = 'user_delete';
+
+    const API_TOKEN_CREATE = 'api_token_create';
+    const API_TOKEN_UPDATE = 'api_token_update';
+    const API_TOKEN_DELETE = 'api_token_delete';
+
+    const ROLE_CREATE = 'role_create';
+    const ROLE_UPDATE = 'role_update';
+    const ROLE_DELETE = 'role_delete';
+
+    const AUTH_PASSWORD_RESET = 'auth_password_reset_request';
+    const AUTH_PASSWORD_RESET_UPDATE = 'auth_password_reset_update';
+    const AUTH_LOGIN = 'auth_login';
+    const AUTH_REGISTER = 'auth_register';
+}

app/Actions/Comment.php

@@ -1,6 +1,8 @@
 <?php namespace BookStack\Actions;
 
-use BookStack\Ownable;
+use BookStack\Model;
+use BookStack\Traits\HasCreatorAndUpdater;
+use Illuminate\Database\Eloquent\Relations\MorphTo;
 
 /**
  * @property string text
@@ -8,25 +10,25 @@ use BookStack\Ownable;
  * @property int|null parent_id
  * @property int local_id
  */
-class Comment extends Ownable
+class Comment extends Model
 {
+    use HasCreatorAndUpdater;
+
     protected $fillable = ['text', 'parent_id'];
     protected $appends = ['created', 'updated'];
 
     /**
      * Get the entity that this comment belongs to
-     * @return \Illuminate\Database\Eloquent\Relations\MorphTo
      */
-    public function entity()
+    public function entity(): MorphTo
     {
         return $this->morphTo('entity');
     }
 
     /**
      * Check if a comment has been updated since creation.
-     * @return bool
      */
-    public function isUpdated()
+    public function isUpdated(): bool
     {
         return $this->updated_at->timestamp > $this->created_at->timestamp;
     }

app/Actions/CommentRepo.php

@@ -1,7 +1,8 @@
 <?php namespace BookStack\Actions;
 
-use BookStack\Entities\Entity;
+use BookStack\Entities\Models\Entity;
 use League\CommonMark\CommonMarkConverter;
+use BookStack\Facades\Activity as ActivityService;
 
 /**
  * Class CommentRepo
@@ -44,6 +45,7 @@ class CommentRepo
         $comment->parent_id = $parent_id;
 
         $entity->comments()->save($comment);
+        ActivityService::addForEntity($entity, ActivityType::COMMENTED_ON);
         return $comment;
     }
 

app/Actions/Tag.php

@@ -2,14 +2,10 @@
 
 use BookStack\Model;
 
-/**
- * Class Attribute
- * @package BookStack
- */
 class Tag extends Model
 {
     protected $fillable = ['name', 'value', 'order'];
-    protected $hidden = ['id', 'entity_id', 'entity_type'];
+    protected $hidden = ['id', 'entity_id', 'entity_type', 'created_at', 'updated_at'];
 
     /**
      * Get the entity that this tag belongs to

app/Actions/TagRepo.php

@@ -1,7 +1,7 @@
 <?php namespace BookStack\Actions;
 
 use BookStack\Auth\Permissions\PermissionService;
-use BookStack\Entities\Entity;
+use BookStack\Entities\Models\Entity;
 use DB;
 use Illuminate\Support\Collection;
 
@@ -26,7 +26,9 @@ class TagRepo
      */
     public function getNameSuggestions(?string $searchTerm): Collection
     {
-        $query = $this->tag->select('*', DB::raw('count(*) as count'))->groupBy('name');
+        $query = $this->tag->newQuery()
+            ->select('*', DB::raw('count(*) as count'))
+            ->groupBy('name');
 
         if ($searchTerm) {
             $query = $query->where('name', 'LIKE', $searchTerm . '%')->orderBy('name', 'desc');
@@ -45,7 +47,9 @@ class TagRepo
      */
     public function getValueSuggestions(?string $searchTerm, ?string $tagName): Collection
     {
-        $query = $this->tag->select('*', DB::raw('count(*) as count'))->groupBy('value');
+        $query = $this->tag->newQuery()
+            ->select('*', DB::raw('count(*) as count'))
+            ->groupBy('value');
 
         if ($searchTerm) {
             $query = $query->where('value', 'LIKE', $searchTerm . '%')->orderBy('value', 'desc');

app/Actions/ViewService.php

@@ -1,8 +1,8 @@
 <?php namespace BookStack\Actions;
 
 use BookStack\Auth\Permissions\PermissionService;
-use BookStack\Entities\Book;
-use BookStack\Entities\Entity;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Entity;
 use BookStack\Entities\EntityProvider;
 use DB;
 use Illuminate\Support\Collection;
@@ -28,7 +28,7 @@ class ViewService
 
     /**
      * Add a view to the given entity.
-     * @param \BookStack\Entities\Entity $entity
+     * @param \BookStack\Entities\Models\Entity $entity
      * @return int
      */
     public function add(Entity $entity)
@@ -65,7 +65,7 @@ class ViewService
     {
         $skipCount = $count * $page;
         $query = $this->permissionService
-            ->filterRestrictedEntityRelations($this->view, 'views', 'viewable_id', 'viewable_type', $action)
+            ->filterRestrictedEntityRelations($this->view->newQuery(), 'views', 'viewable_id', 'viewable_type', $action)
             ->select('*', 'viewable_id', 'viewable_type', DB::raw('SUM(views) as view_count'))
             ->groupBy('viewable_id', 'viewable_type')
             ->orderBy('view_count', 'desc');
@@ -74,34 +74,37 @@ class ViewService
             $query->whereIn('viewable_type', $this->entityProvider->getMorphClasses($filterModels));
         }
 
-        return $query->with('viewable')->skip($skipCount)->take($count)->get()->pluck('viewable');
+        return $query->with('viewable')
+            ->skip($skipCount)
+            ->take($count)
+            ->get()
+            ->pluck('viewable')
+            ->filter();
     }
 
     /**
      * Get all recently viewed entities for the current user.
-     * @param int $count
-     * @param int $page
-     * @param Entity|bool $filterModel
-     * @return mixed
      */
-    public function getUserRecentlyViewed($count = 10, $page = 0, $filterModel = false)
+    public function getUserRecentlyViewed(int $count = 10, int $page = 1)
     {
         $user = user();
         if ($user === null || $user->isDefault()) {
             return collect();
         }
 
-        $query = $this->permissionService
-            ->filterRestrictedEntityRelations($this->view, 'views', 'viewable_id', 'viewable_type');
-
-        if ($filterModel) {
-            $query = $query->where('viewable_type', '=', $filterModel->getMorphClass());
+        $all = collect();
+        /** @var Entity $instance */
+        foreach ($this->entityProvider->all() as $name => $instance) {
+            $items = $instance::visible()->withLastView()
+                ->having('last_viewed_at', '>', 0)
+                ->orderBy('last_viewed_at', 'desc')
+                ->skip($count * ($page - 1))
+                ->take($count)
+                ->get();
+            $all = $all->concat($items);
         }
-        $query = $query->where('user_id', '=', $user->id);
 
-        $viewables = $query->with('viewable')->orderBy('updated_at', 'desc')
-            ->skip($count * $page)->take($count)->get()->pluck('viewable');
-        return $viewables;
+        return $all->sortByDesc('last_viewed_at')->slice(0, $count);
     }
 
     /**

app/Api/ApiDocsGenerator.php

@@ -1,7 +1,9 @@
 <?php namespace BookStack\Api;
 
 use BookStack\Http\Controllers\Api\ApiController;
+use Illuminate\Contracts\Container\BindingResolutionException;
 use Illuminate\Support\Collection;
+use Illuminate\Support\Facades\Cache;
 use Illuminate\Support\Facades\Route;
 use Illuminate\Support\Str;
 use ReflectionClass;
@@ -14,10 +16,27 @@ class ApiDocsGenerator
     protected $reflectionClasses = [];
     protected $controllerClasses = [];
 
+    /**
+     * Load the docs form the cache if existing
+     * otherwise generate and store in the cache.
+     */
+    public static function generateConsideringCache(): Collection
+    {
+        $appVersion = trim(file_get_contents(base_path('version')));
+        $cacheKey = 'api-docs::' . $appVersion;
+        if (Cache::has($cacheKey) && config('app.env') === 'production') {
+            $docs = Cache::get($cacheKey);
+        } else {
+            $docs = (new static())->generate();
+            Cache::put($cacheKey, $docs, 60 * 24);
+        }
+        return $docs;
+    }
+
     /**
      * Generate API documentation.
      */
-    public function generate(): Collection
+    protected function generate(): Collection
     {
         $apiRoutes = $this->getFlatApiRoutes();
         $apiRoutes = $this->loadDetailsFromControllers($apiRoutes);
@@ -58,7 +77,7 @@ class ApiDocsGenerator
 
     /**
      * Load body params and their rules by inspecting the given class and method name.
-     * @throws \Illuminate\Contracts\Container\BindingResolutionException
+     * @throws BindingResolutionException
      */
     protected function getBodyParamsFromClass(string $className, string $methodName): ?array
     {
@@ -123,5 +142,4 @@ class ApiDocsGenerator
             ];
         });
     }
-
-}
+}

app/Api/ApiToken.php

@@ -1,11 +1,21 @@
 <?php namespace BookStack\Api;
 
 use BookStack\Auth\User;
+use BookStack\Interfaces\Loggable;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Support\Carbon;
 
-class ApiToken extends Model
+/**
+ * Class ApiToken
+ * @property int $id
+ * @property string $token_id
+ * @property string $secret
+ * @property string $name
+ * @property Carbon $expires_at
+ * @property User $user
+ */
+class ApiToken extends Model implements Loggable
 {
     protected $fillable = ['name', 'expires_at'];
     protected $casts = [
@@ -28,4 +38,12 @@ class ApiToken extends Model
     {
         return Carbon::now()->addYears(100)->format('Y-m-d');
     }
+
+    /**
+     * @inheritdoc
+     */
+    public function logDescriptor(): string
+    {
+        return "({$this->id}) {$this->name}; User: {$this->user->logDescriptor()}";
+    }
 }

app/Api/ApiTokenGuard.php

@@ -163,4 +163,4 @@ class ApiTokenGuard implements Guard
     {
         $this->user = null;
     }
-}
+}

app/Auth/Access/Guards/ExternalBaseSessionGuard.php

@@ -15,8 +15,6 @@ use Illuminate\Contracts\Session\Session;
  * guard with 'remember' functionality removed. Basic auth and event emission
  * has also been removed to keep this simple. Designed to be extended by external
  * Auth Guards.
- *
- * @package Illuminate\Auth
  */
 class ExternalBaseSessionGuard implements StatefulGuard
 {
@@ -301,5 +299,4 @@ class ExternalBaseSessionGuard implements StatefulGuard
 
         return $this;
     }
-
 }

app/Auth/Access/Guards/LdapSessionGuard.php

@@ -5,14 +5,12 @@ namespace BookStack\Auth\Access\Guards;
 use BookStack\Auth\Access\LdapService;
 use BookStack\Auth\Access\RegistrationService;
 use BookStack\Auth\User;
-use BookStack\Auth\UserRepo;
 use BookStack\Exceptions\LdapException;
 use BookStack\Exceptions\LoginAttemptException;
 use BookStack\Exceptions\LoginAttemptEmailNeededException;
 use BookStack\Exceptions\UserRegistrationException;
 use Illuminate\Contracts\Auth\UserProvider;
 use Illuminate\Contracts\Session\Session;
-use Illuminate\Support\Facades\Hash;
 use Illuminate\Support\Str;
 
 class LdapSessionGuard extends ExternalBaseSessionGuard
@@ -23,13 +21,13 @@ class LdapSessionGuard extends ExternalBaseSessionGuard
     /**
      * LdapSessionGuard constructor.
      */
-    public function __construct($name,
+    public function __construct(
+        $name,
         UserProvider $provider,
         Session $session,
         LdapService $ldapService,
         RegistrationService $registrationService
-    )
-    {
+    ) {
         $this->ldapService = $ldapService;
         parent::__construct($name, $provider, $session, $registrationService);
     }
@@ -119,5 +117,4 @@ class LdapSessionGuard extends ExternalBaseSessionGuard
 
         return $this->registrationService->registerUser($details, null, false);
     }
-
 }

app/Auth/Access/Guards/Saml2SessionGuard.php

@@ -9,8 +9,6 @@ namespace BookStack\Auth\Access\Guards;
  * into the default laravel 'Guard' auth flow. Instead most of the logic is done
  * via the Saml2 controller & Saml2Service. This class provides a safer, thin
  * version of SessionGuard.
- *
- * @package BookStack\Auth\Access\Guards
  */
 class Saml2SessionGuard extends ExternalBaseSessionGuard
 {
@@ -36,5 +34,4 @@ class Saml2SessionGuard extends ExternalBaseSessionGuard
     {
         return false;
     }
-
 }

app/Auth/Access/Ldap.php

@@ -4,7 +4,6 @@
  * Class Ldap
  * An object-orientated thin abstraction wrapper for common PHP LDAP functions.
  * Allows the standard LDAP functions to be mocked for testing.
- * @package BookStack\Services
  */
 class Ldap
 {
@@ -32,6 +31,14 @@ class Ldap
         return ldap_set_option($ldapConnection, $option, $value);
     }
 
+    /**
+     * Start TLS on the given LDAP connection.
+     */
+    public function startTls($ldapConnection): bool
+    {
+        return ldap_start_tls($ldapConnection);
+    }
+
     /**
      * Set the version number for the given ldap connection.
      * @param $ldapConnection

app/Auth/Access/LdapService.php

@@ -85,9 +85,9 @@ class LdapService extends ExternalAuthService
 
         $userCn = $this->getUserResponseProperty($user, 'cn', null);
         $formatted = [
-            'uid'   => $this->getUserResponseProperty($user, $idAttr, $user['dn']),
-            'name'  => $this->getUserResponseProperty($user, $displayNameAttr, $userCn),
-            'dn'    => $user['dn'],
+            'uid' => $this->getUserResponseProperty($user, $idAttr, $user['dn']),
+            'name' => $this->getUserResponseProperty($user, $displayNameAttr, $userCn),
+            'dn' => $user['dn'],
             'email' => $this->getUserResponseProperty($user, $emailAttr, null),
         ];
 
@@ -187,8 +187,8 @@ class LdapService extends ExternalAuthService
             throw new LdapException(trans('errors.ldap_extension_not_installed'));
         }
 
-         // Check if TLS_INSECURE is set. The handle is set to NULL due to the nature of
-         // the LDAP_OPT_X_TLS_REQUIRE_CERT option. It can only be set globally and not per handle.
+        // Disable certificate verification.
+        // This option works globally and must be set before a connection is created.
         if ($this->config['tls_insecure']) {
             $this->ldap->setOption(null, LDAP_OPT_X_TLS_REQUIRE_CERT, LDAP_OPT_X_TLS_NEVER);
         }
@@ -205,6 +205,14 @@ class LdapService extends ExternalAuthService
             $this->ldap->setVersion($ldapConnection, $this->config['version']);
         }
 
+        // Start and verify TLS if it's enabled
+        if ($this->config['start_tls']) {
+            $started = $this->ldap->startTls($ldapConnection);
+            if (!$started) {
+                throw new LdapException('Could not start TLS connection');
+            }
+        }
+
         $this->ldapConnection = $ldapConnection;
         return $this->ldapConnection;
     }

app/Auth/Access/RegistrationService.php

@@ -1,9 +1,13 @@
 <?php namespace BookStack\Auth\Access;
 
+use BookStack\Actions\ActivityType;
 use BookStack\Auth\SocialAccount;
 use BookStack\Auth\User;
 use BookStack\Auth\UserRepo;
 use BookStack\Exceptions\UserRegistrationException;
+use BookStack\Facades\Activity;
+use BookStack\Facades\Theme;
+use BookStack\Theming\ThemeEvents;
 use Exception;
 
 class RegistrationService
@@ -68,6 +72,9 @@ class RegistrationService
             $newUser->socialAccounts()->save($socialAccount);
         }
 
+        Activity::add(ActivityType::AUTH_REGISTER, $socialAccount ?? $newUser);
+        Theme::dispatch(ThemeEvents::AUTH_REGISTER, $socialAccount ? $socialAccount->driver : auth()->getDefaultDriver(), $newUser);
+
         // Start email confirmation flow if required
         if ($this->emailConfirmationService->confirmationRequired() && !$emailConfirmed) {
             $newUser->save();
@@ -79,7 +86,6 @@ class RegistrationService
                 $message = trans('auth.email_confirm_send_error');
                 throw new UserRegistrationException($message, '/register/confirm');
             }
-
         }
 
         return $newUser;
@@ -105,5 +111,4 @@ class RegistrationService
             throw new UserRegistrationException(trans('auth.registration_email_domain_invalid'), $redirect);
         }
     }
-
-}
+}

app/Auth/Access/Saml2Service.php

@@ -1,9 +1,13 @@
 <?php namespace BookStack\Auth\Access;
 
+use BookStack\Actions\ActivityType;
 use BookStack\Auth\User;
 use BookStack\Exceptions\JsonDebugException;
 use BookStack\Exceptions\SamlException;
 use BookStack\Exceptions\UserRegistrationException;
+use BookStack\Facades\Activity;
+use BookStack\Facades\Theme;
+use BookStack\Theming\ThemeEvents;
 use Exception;
 use Illuminate\Support\Str;
 use OneLogin\Saml2\Auth;
@@ -372,6 +376,8 @@ class Saml2Service extends ExternalAuthService
         }
 
         auth()->login($user);
+        Activity::add(ActivityType::AUTH_LOGIN, "saml2; {$user->logDescriptor()}");
+        Theme::dispatch(ThemeEvents::AUTH_LOGIN, 'saml2', $user);
         return $user;
     }
 }

app/Auth/Access/SocialAuthService.php

@@ -1,36 +1,64 @@
 <?php namespace BookStack\Auth\Access;
 
+use BookStack\Actions\ActivityType;
 use BookStack\Auth\SocialAccount;
-use BookStack\Auth\UserRepo;
+use BookStack\Auth\User;
 use BookStack\Exceptions\SocialDriverNotConfigured;
 use BookStack\Exceptions\SocialSignInAccountNotUsed;
 use BookStack\Exceptions\UserRegistrationException;
+use BookStack\Facades\Activity;
+use BookStack\Facades\Theme;
+use BookStack\Theming\ThemeEvents;
+use Illuminate\Support\Facades\Event;
 use Illuminate\Support\Str;
 use Laravel\Socialite\Contracts\Factory as Socialite;
 use Laravel\Socialite\Contracts\Provider;
 use Laravel\Socialite\Contracts\User as SocialUser;
+use SocialiteProviders\Manager\SocialiteWasCalled;
 use Symfony\Component\HttpFoundation\RedirectResponse;
 
 class SocialAuthService
 {
-
-    protected $userRepo;
+    /**
+     * The core socialite library used.
+     * @var Socialite
+     */
     protected $socialite;
-    protected $socialAccount;
 
-    protected $validSocialDrivers = ['google', 'github', 'facebook', 'slack', 'twitter', 'azure', 'okta', 'gitlab', 'twitch', 'discord'];
+    /**
+     * The default built-in social drivers we support.
+     * @var string[]
+     */
+    protected $validSocialDrivers = [
+        'google',
+        'github',
+        'facebook',
+        'slack',
+        'twitter',
+        'azure',
+        'okta',
+        'gitlab',
+        'twitch',
+        'discord'
+    ];
+
+    /**
+     * Callbacks to run when configuring a social driver
+     * for an initial redirect action.
+     * Array is keyed by social driver name.
+     * Callbacks are passed an instance of the driver.
+     * @var array<string, callable>
+     */
+    protected $configureForRedirectCallbacks = [];
 
     /**
      * SocialAuthService constructor.
      */
-    public function __construct(UserRepo $userRepo, Socialite $socialite, SocialAccount $socialAccount)
+    public function __construct(Socialite $socialite)
     {
-        $this->userRepo = $userRepo;
         $this->socialite = $socialite;
-        $this->socialAccount = $socialAccount;
     }
 
-
     /**
      * Start the social login path.
      * @throws SocialDriverNotConfigured
@@ -38,7 +66,7 @@ class SocialAuthService
     public function startLogIn(string $socialDriver): RedirectResponse
     {
         $driver = $this->validateDriver($socialDriver);
-        return $this->getSocialDriver($driver)->redirect();
+        return $this->getDriverForRedirect($driver)->redirect();
     }
 
     /**
@@ -48,7 +76,7 @@ class SocialAuthService
     public function startRegister(string $socialDriver): RedirectResponse
     {
         $driver = $this->validateDriver($socialDriver);
-        return $this->getSocialDriver($driver)->redirect();
+        return $this->getDriverForRedirect($driver)->redirect();
     }
 
     /**
@@ -58,11 +86,11 @@ class SocialAuthService
     public function handleRegistrationCallback(string $socialDriver, SocialUser $socialUser): SocialUser
     {
         // Check social account has not already been used
-        if ($this->socialAccount->where('driver_id', '=', $socialUser->getId())->exists()) {
-            throw new UserRegistrationException(trans('errors.social_account_in_use', ['socialAccount'=>$socialDriver]), '/login');
+        if (SocialAccount::query()->where('driver_id', '=', $socialUser->getId())->exists()) {
+            throw new UserRegistrationException(trans('errors.social_account_in_use', ['socialAccount' => $socialDriver]), '/login');
         }
 
-        if ($this->userRepo->getByEmail($socialUser->getEmail())) {
+        if (User::query()->where('email', '=', $socialUser->getEmail())->exists()) {
             $email = $socialUser->getEmail();
             throw new UserRegistrationException(trans('errors.error_user_exists_different_creds', ['email' => $email]), '/login');
         }
@@ -89,7 +117,7 @@ class SocialAuthService
         $socialId = $socialUser->getId();
 
         // Get any attached social accounts or users
-        $socialAccount = $this->socialAccount->where('driver_id', '=', $socialId)->first();
+        $socialAccount = SocialAccount::query()->where('driver_id', '=', $socialId)->first();
         $isLoggedIn = auth()->check();
         $currentUser = user();
         $titleCaseDriver = Str::title($socialDriver);
@@ -98,14 +126,16 @@ class SocialAuthService
         // Simply log the user into the application.
         if (!$isLoggedIn && $socialAccount !== null) {
             auth()->login($socialAccount->user);
+            Activity::add(ActivityType::AUTH_LOGIN, $socialAccount);
+            Theme::dispatch(ThemeEvents::AUTH_LOGIN, $socialDriver, $socialAccount->user);
             return redirect()->intended('/');
         }
 
         // When a user is logged in but the social account does not exist,
         // Create the social account and attach it to the user & redirect to the profile page.
         if ($isLoggedIn && $socialAccount === null) {
-            $this->fillSocialAccount($socialDriver, $socialUser);
-            $currentUser->socialAccounts()->save($this->socialAccount);
+            $account = $this->newSocialAccount($socialDriver, $socialUser);
+            $currentUser->socialAccounts()->save($account);
             session()->flash('success', trans('settings.users_social_connected', ['socialAccount' => $titleCaseDriver]));
             return redirect($currentUser->getEditUrl());
         }
@@ -127,7 +157,7 @@ class SocialAuthService
         if (setting('registration-enabled') && config('auth.method') !== 'ldap' && config('auth.method') !== 'saml2') {
             $message .= trans('errors.social_account_register_instructions', ['socialAccount' => $titleCaseDriver]);
         }
-        
+
         throw new SocialSignInAccountNotUsed($message, '/login');
     }
 
@@ -204,21 +234,19 @@ class SocialAuthService
     /**
      * Fill and return a SocialAccount from the given driver name and SocialUser.
      */
-    public function fillSocialAccount(string $socialDriver, SocialUser $socialUser): SocialAccount
+    public function newSocialAccount(string $socialDriver, SocialUser $socialUser): SocialAccount
     {
-        $this->socialAccount->fill([
-            'driver'    => $socialDriver,
+        return new SocialAccount([
+            'driver' => $socialDriver,
             'driver_id' => $socialUser->getId(),
-            'avatar'    => $socialUser->getAvatar()
+            'avatar' => $socialUser->getAvatar()
         ]);
-        return $this->socialAccount;
     }
 
     /**
      * Detach a social account from a user.
-     * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
      */
-    public function detachSocialAccount(string $socialDriver)
+    public function detachSocialAccount(string $socialDriver): void
     {
         user()->socialAccounts()->where('driver', '=', $socialDriver)->delete();
     }
@@ -226,7 +254,7 @@ class SocialAuthService
     /**
      * Provide redirect options per service for the Laravel Socialite driver
      */
-    public function getSocialDriver(string $driverName): Provider
+    protected function getDriverForRedirect(string $driverName): Provider
     {
         $driver = $this->socialite->driver($driverName);
 
@@ -237,6 +265,33 @@ class SocialAuthService
             $driver->with(['resource' => 'https://graph.windows.net']);
         }
 
+        if (isset($this->configureForRedirectCallbacks[$driverName])) {
+            $this->configureForRedirectCallbacks[$driverName]($driver);
+        }
+
         return $driver;
     }
+
+    /**
+     * Add a custom socialite driver to be used.
+     * Driver name should be lower_snake_case.
+     * Config array should mirror the structure of a service
+     * within the `Config/services.php` file.
+     * Handler should be a Class@method handler to the SocialiteWasCalled event.
+     */
+    public function addSocialDriver(
+        string $driverName,
+        array $config,
+        string $socialiteHandler,
+        callable $configureForRedirect = null
+    ) {
+        $this->validSocialDrivers[] = $driverName;
+        config()->set('services.' . $driverName, $config);
+        config()->set('services.' . $driverName . '.redirect', url('/login/service/' . $driverName . '/callback'));
+        config()->set('services.' . $driverName . '.name', $config['name'] ?? $driverName);
+        Event::listen(SocialiteWasCalled::class, $socialiteHandler);
+        if (!is_null($configureForRedirect)) {
+            $this->configureForRedirectCallbacks[$driverName] = $configureForRedirect;
+        }
+    }
 }

app/Auth/Permissions/JointPermission.php

@@ -1,7 +1,7 @@
 <?php namespace BookStack\Auth\Permissions;
 
 use BookStack\Auth\Role;
-use BookStack\Entities\Entity;
+use BookStack\Entities\Models\Entity;
 use BookStack\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\MorphOne;

app/Auth/Permissions/PermissionService.php

@@ -1,26 +1,33 @@
 <?php namespace BookStack\Auth\Permissions;
 
-use BookStack\Auth\Permissions;
 use BookStack\Auth\Role;
-use BookStack\Entities\Book;
-use BookStack\Entities\Bookshelf;
-use BookStack\Entities\Chapter;
-use BookStack\Entities\Entity;
-use BookStack\Entities\EntityProvider;
-use BookStack\Entities\Page;
-use BookStack\Ownable;
+use BookStack\Auth\User;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\BookChild;
+use BookStack\Entities\Models\Bookshelf;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Models\Entity;
+use BookStack\Entities\Models\Page;
+use BookStack\Model;
+use BookStack\Traits\HasCreatorAndUpdater;
+use BookStack\Traits\HasOwner;
 use Illuminate\Database\Connection;
 use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Collection as EloquentCollection;
 use Illuminate\Database\Query\Builder as QueryBuilder;
-use Illuminate\Support\Collection;
+use Throwable;
 
 class PermissionService
 {
+    /**
+     * @var ?array
+     */
+    protected $userRoles = null;
 
-    protected $currentAction;
-    protected $isAdminUser;
-    protected $userRoles = false;
-    protected $currentUserModel = false;
+    /**
+     * @var ?User
+     */
+    protected $currentUserModel = null;
 
     /**
      * @var Connection
@@ -28,52 +35,20 @@ class PermissionService
     protected $db;
 
     /**
-     * @var JointPermission
+     * @var array
      */
-    protected $jointPermission;
-
-    /**
-     * @var Role
-     */
-    protected $role;
-
-    /**
-     * @var EntityPermission
-     */
-    protected $entityPermission;
-
-    /**
-     * @var EntityProvider
-     */
-    protected $entityProvider;
-
     protected $entityCache;
 
     /**
      * PermissionService constructor.
-     * @param JointPermission $jointPermission
-     * @param EntityPermission $entityPermission
-     * @param Role $role
-     * @param Connection $db
-     * @param EntityProvider $entityProvider
      */
-    public function __construct(
-        JointPermission $jointPermission,
-        Permissions\EntityPermission $entityPermission,
-        Role $role,
-        Connection $db,
-        EntityProvider $entityProvider
-    ) {
+    public function __construct(Connection $db)
+    {
         $this->db = $db;
-        $this->jointPermission = $jointPermission;
-        $this->entityPermission = $entityPermission;
-        $this->role = $role;
-        $this->entityProvider = $entityProvider;
     }
 
     /**
      * Set the database connection
-     * @param Connection $connection
      */
     public function setConnection(Connection $connection)
     {
@@ -82,81 +57,63 @@ class PermissionService
 
     /**
      * Prepare the local entity cache and ensure it's empty
-     * @param \BookStack\Entities\Entity[] $entities
+     * @param Entity[] $entities
      */
-    protected function readyEntityCache($entities = [])
+    protected function readyEntityCache(array $entities = [])
     {
         $this->entityCache = [];
 
         foreach ($entities as $entity) {
-            $type = $entity->getType();
-            if (!isset($this->entityCache[$type])) {
-                $this->entityCache[$type] = collect();
+            $class = get_class($entity);
+            if (!isset($this->entityCache[$class])) {
+                $this->entityCache[$class] = collect();
             }
-            $this->entityCache[$type]->put($entity->id, $entity);
+            $this->entityCache[$class]->put($entity->id, $entity);
         }
     }
 
     /**
      * Get a book via ID, Checks local cache
-     * @param $bookId
-     * @return Book
      */
-    protected function getBook($bookId)
+    protected function getBook(int $bookId): ?Book
     {
-        if (isset($this->entityCache['book']) && $this->entityCache['book']->has($bookId)) {
-            return $this->entityCache['book']->get($bookId);
+        if (isset($this->entityCache[Book::class]) && $this->entityCache[Book::class]->has($bookId)) {
+            return $this->entityCache[Book::class]->get($bookId);
         }
 
-        $book = $this->entityProvider->book->find($bookId);
-        if ($book === null) {
-            $book = false;
-        }
-
-        return $book;
+        return Book::query()->withTrashed()->find($bookId);
     }
 
     /**
      * Get a chapter via ID, Checks local cache
-     * @param $chapterId
-     * @return \BookStack\Entities\Book
      */
-    protected function getChapter($chapterId)
+    protected function getChapter(int $chapterId): ?Chapter
     {
-        if (isset($this->entityCache['chapter']) && $this->entityCache['chapter']->has($chapterId)) {
-            return $this->entityCache['chapter']->get($chapterId);
+        if (isset($this->entityCache[Chapter::class]) && $this->entityCache[Chapter::class]->has($chapterId)) {
+            return $this->entityCache[Chapter::class]->get($chapterId);
         }
 
-        $chapter = $this->entityProvider->chapter->find($chapterId);
-        if ($chapter === null) {
-            $chapter = false;
-        }
-
-        return $chapter;
+        return Chapter::query()
+            ->withTrashed()
+            ->find($chapterId);
     }
 
     /**
-     * Get the roles for the current user;
-     * @return array|bool
+     * Get the roles for the current logged in user.
      */
-    protected function getRoles()
+    protected function getCurrentUserRoles(): array
     {
-        if ($this->userRoles !== false) {
+        if (!is_null($this->userRoles)) {
             return $this->userRoles;
         }
 
-        $roles = [];
-
         if (auth()->guest()) {
-            $roles[] = $this->role->getSystemRole('public')->id;
-            return $roles;
+            $this->userRoles = [Role::getSystemRole('public')->id];
+        } else {
+            $this->userRoles = $this->currentUser()->roles->pluck('id')->values()->all();
         }
 
-
-        foreach ($this->currentUser()->roles as $role) {
-            $roles[] = $role->id;
-        }
-        return $roles;
+        return $this->userRoles;
     }
 
     /**
@@ -164,59 +121,57 @@ class PermissionService
      */
     public function buildJointPermissions()
     {
-        $this->jointPermission->truncate();
+        JointPermission::query()->truncate();
         $this->readyEntityCache();
 
         // Get all roles (Should be the most limited dimension)
-        $roles = $this->role->with('permissions')->get()->all();
+        $roles = Role::query()->with('permissions')->get()->all();
 
         // Chunk through all books
-        $this->bookFetchQuery()->chunk(5, function ($books) use ($roles) {
+        $this->bookFetchQuery()->chunk(5, function (EloquentCollection $books) use ($roles) {
             $this->buildJointPermissionsForBooks($books, $roles);
         });
 
         // Chunk through all bookshelves
-        $this->entityProvider->bookshelf->newQuery()->select(['id', 'restricted', 'created_by'])
-            ->chunk(50, function ($shelves) use ($roles) {
+        Bookshelf::query()->withTrashed()->select(['id', 'restricted', 'owned_by'])
+            ->chunk(50, function (EloquentCollection $shelves) use ($roles) {
                 $this->buildJointPermissionsForShelves($shelves, $roles);
             });
     }
 
     /**
      * Get a query for fetching a book with it's children.
-     * @return QueryBuilder
      */
-    protected function bookFetchQuery()
+    protected function bookFetchQuery(): Builder
     {
-        return $this->entityProvider->book->newQuery()
-            ->select(['id', 'restricted', 'created_by'])->with(['chapters' => function ($query) {
-                $query->select(['id', 'restricted', 'created_by', 'book_id']);
-            }, 'pages'  => function ($query) {
-                $query->select(['id', 'restricted', 'created_by', 'book_id', 'chapter_id']);
-            }]);
+        return Book::query()->withTrashed()
+            ->select(['id', 'restricted', 'owned_by'])->with([
+                'chapters' => function ($query) {
+                    $query->withTrashed()->select(['id', 'restricted', 'owned_by', 'book_id']);
+                },
+                'pages' => function ($query) {
+                    $query->withTrashed()->select(['id', 'restricted', 'owned_by', 'book_id', 'chapter_id']);
+                }
+            ]);
     }
 
     /**
-     * @param Collection $shelves
-     * @param array $roles
-     * @param bool $deleteOld
-     * @throws \Throwable
+     * Build joint permissions for the given shelf and role combinations.
+     * @throws Throwable
      */
-    protected function buildJointPermissionsForShelves($shelves, $roles, $deleteOld = false)
+    protected function buildJointPermissionsForShelves(EloquentCollection $shelves, array $roles, bool $deleteOld = false)
     {
         if ($deleteOld) {
             $this->deleteManyJointPermissionsForEntities($shelves->all());
         }
-        $this->createManyJointPermissions($shelves, $roles);
+        $this->createManyJointPermissions($shelves->all(), $roles);
     }
 
     /**
-     * Build joint permissions for an array of books
-     * @param Collection $books
-     * @param array $roles
-     * @param bool $deleteOld
+     * Build joint permissions for the given book and role combinations.
+     * @throws Throwable
      */
-    protected function buildJointPermissionsForBooks($books, $roles, $deleteOld = false)
+    protected function buildJointPermissionsForBooks(EloquentCollection $books, array $roles, bool $deleteOld = false)
     {
         $entities = clone $books;
 
@@ -233,55 +188,53 @@ class PermissionService
         if ($deleteOld) {
             $this->deleteManyJointPermissionsForEntities($entities->all());
         }
-        $this->createManyJointPermissions($entities, $roles);
+        $this->createManyJointPermissions($entities->all(), $roles);
     }
 
     /**
      * Rebuild the entity jointPermissions for a particular entity.
-     * @param \BookStack\Entities\Entity $entity
-     * @throws \Throwable
+     * @throws Throwable
      */
     public function buildJointPermissionsForEntity(Entity $entity)
     {
         $entities = [$entity];
-        if ($entity->isA('book')) {
+        if ($entity instanceof Book) {
             $books = $this->bookFetchQuery()->where('id', '=', $entity->id)->get();
-            $this->buildJointPermissionsForBooks($books, $this->role->newQuery()->get(), true);
+            $this->buildJointPermissionsForBooks($books, Role::query()->get()->all(), true);
             return;
         }
 
+        /** @var BookChild $entity */
         if ($entity->book) {
             $entities[] = $entity->book;
         }
 
-        if ($entity->isA('page') && $entity->chapter_id) {
+        if ($entity instanceof Page && $entity->chapter_id) {
             $entities[] = $entity->chapter;
         }
 
-        if ($entity->isA('chapter')) {
+        if ($entity instanceof Chapter) {
             foreach ($entity->pages as $page) {
                 $entities[] = $page;
             }
         }
 
-        $this->buildJointPermissionsForEntities(collect($entities));
+        $this->buildJointPermissionsForEntities($entities);
     }
 
     /**
      * Rebuild the entity jointPermissions for a collection of entities.
-     * @param Collection $entities
-     * @throws \Throwable
+     * @throws Throwable
      */
-    public function buildJointPermissionsForEntities(Collection $entities)
+    public function buildJointPermissionsForEntities(array $entities)
     {
-        $roles = $this->role->newQuery()->get();
-        $this->deleteManyJointPermissionsForEntities($entities->all());
+        $roles = Role::query()->get()->values()->all();
+        $this->deleteManyJointPermissionsForEntities($entities);
         $this->createManyJointPermissions($entities, $roles);
     }
 
     /**
      * Build the entity jointPermissions for a particular role.
-     * @param Role $role
      */
     public function buildJointPermissionForRole(Role $role)
     {
@@ -294,7 +247,7 @@ class PermissionService
         });
 
         // Chunk through all bookshelves
-        $this->entityProvider->bookshelf->newQuery()->select(['id', 'restricted', 'created_by'])
+        Bookshelf::query()->select(['id', 'restricted', 'owned_by'])
             ->chunk(50, function ($shelves) use ($roles) {
                 $this->buildJointPermissionsForShelves($shelves, $roles);
             });
@@ -302,7 +255,6 @@ class PermissionService
 
     /**
      * Delete the entity jointPermissions attached to a particular role.
-     * @param Role $role
      */
     public function deleteJointPermissionsForRole(Role $role)
     {
@@ -318,13 +270,13 @@ class PermissionService
         $roleIds = array_map(function ($role) {
             return $role->id;
         }, $roles);
-        $this->jointPermission->newQuery()->whereIn('role_id', $roleIds)->delete();
+        JointPermission::query()->whereIn('role_id', $roleIds)->delete();
     }
 
     /**
      * Delete the entity jointPermissions for a particular entity.
      * @param Entity $entity
-     * @throws \Throwable
+     * @throws Throwable
      */
     public function deleteJointPermissionsForEntity(Entity $entity)
     {
@@ -333,10 +285,10 @@ class PermissionService
 
     /**
      * Delete all of the entity jointPermissions for a list of entities.
-     * @param \BookStack\Entities\Entity[] $entities
-     * @throws \Throwable
+     * @param Entity[] $entities
+     * @throws Throwable
      */
-    protected function deleteManyJointPermissionsForEntities($entities)
+    protected function deleteManyJointPermissionsForEntities(array $entities)
     {
         if (count($entities) === 0) {
             return;
@@ -358,19 +310,19 @@ class PermissionService
     }
 
     /**
-     * Create & Save entity jointPermissions for many entities and jointPermissions.
-     * @param Collection $entities
-     * @param array $roles
-     * @throws \Throwable
+     * Create & Save entity jointPermissions for many entities and roles.
+     * @param Entity[] $entities
+     * @param Role[] $roles
+     * @throws Throwable
      */
-    protected function createManyJointPermissions($entities, $roles)
+    protected function createManyJointPermissions(array $entities, array $roles)
     {
         $this->readyEntityCache($entities);
         $jointPermissions = [];
 
         // Fetch Entity Permissions and create a mapping of entity restricted statuses
         $entityRestrictedMap = [];
-        $permissionFetch = $this->entityPermission->newQuery();
+        $permissionFetch = EntityPermission::query();
         foreach ($entities as $entity) {
             $entityRestrictedMap[$entity->getMorphClass() . ':' . $entity->id] = boolval($entity->getRawAttribute('restricted'));
             $permissionFetch->orWhere(function ($query) use ($entity) {
@@ -414,16 +366,14 @@ class PermissionService
 
     /**
      * Get the actions related to an entity.
-     * @param \BookStack\Entities\Entity $entity
-     * @return array
      */
-    protected function getActions(Entity $entity)
+    protected function getActions(Entity $entity): array
     {
         $baseActions = ['view', 'update', 'delete'];
-        if ($entity->isA('chapter') || $entity->isA('book')) {
+        if ($entity instanceof Chapter || $entity instanceof Book) {
             $baseActions[] = 'page-create';
         }
-        if ($entity->isA('book')) {
+        if ($entity instanceof Book) {
             $baseActions[] = 'chapter-create';
         }
         return $baseActions;
@@ -432,14 +382,8 @@ class PermissionService
     /**
      * Create entity permission data for an entity and role
      * for a particular action.
-     * @param Entity $entity
-     * @param Role $role
-     * @param string $action
-     * @param array $permissionMap
-     * @param array $rolePermissionMap
-     * @return array
      */
-    protected function createJointPermissionData(Entity $entity, Role $role, $action, $permissionMap, $rolePermissionMap)
+    protected function createJointPermissionData(Entity $entity, Role $role, string $action, array $permissionMap, array $rolePermissionMap): array
     {
         $permissionPrefix = (strpos($action, '-') === false ? ($entity->getType() . '-') : '') . $action;
         $roleHasPermission = isset($rolePermissionMap[$role->getRawAttribute('id') . ':' . $permissionPrefix . '-all']);
@@ -456,7 +400,7 @@ class PermissionService
             return $this->createJointPermissionDataArray($entity, $role, $action, $hasAccess, $hasAccess);
         }
 
-        if ($entity->isA('book') || $entity->isA('bookshelf')) {
+        if ($entity instanceof Book || $entity instanceof Bookshelf) {
             return $this->createJointPermissionDataArray($entity, $role, $action, $roleHasPermission, $roleHasPermissionOwn);
         }
 
@@ -466,7 +410,7 @@ class PermissionService
         $hasPermissiveAccessToParents = !$book->restricted;
 
         // For pages with a chapter, Check if explicit permissions are set on the Chapter
-        if ($entity->isA('page') && $entity->chapter_id !== 0 && $entity->chapter_id !== '0') {
+        if ($entity instanceof Page && intval($entity->chapter_id) !== 0) {
             $chapter = $this->getChapter($entity->chapter_id);
             $hasPermissiveAccessToParents = $hasPermissiveAccessToParents && !$chapter->restricted;
             if ($chapter->restricted) {
@@ -485,101 +429,81 @@ class PermissionService
 
     /**
      * Check for an active restriction in an entity map.
-     * @param $entityMap
-     * @param Entity $entity
-     * @param Role $role
-     * @param $action
-     * @return bool
      */
-    protected function mapHasActiveRestriction($entityMap, Entity $entity, Role $role, $action)
+    protected function mapHasActiveRestriction(array $entityMap, Entity $entity, Role $role, string $action): bool
     {
         $key = $entity->getMorphClass() . ':' . $entity->getRawAttribute('id') . ':' . $role->getRawAttribute('id') . ':' . $action;
-        return isset($entityMap[$key]) ? $entityMap[$key] : false;
+        return $entityMap[$key] ?? false;
     }
 
     /**
      * Create an array of data with the information of an entity jointPermissions.
      * Used to build data for bulk insertion.
-     * @param \BookStack\Entities\Entity $entity
-     * @param Role $role
-     * @param $action
-     * @param $permissionAll
-     * @param $permissionOwn
-     * @return array
      */
-    protected function createJointPermissionDataArray(Entity $entity, Role $role, $action, $permissionAll, $permissionOwn)
+    protected function createJointPermissionDataArray(Entity $entity, Role $role, string $action, bool $permissionAll, bool $permissionOwn): array
     {
         return [
-            'role_id'            => $role->getRawAttribute('id'),
-            'entity_id'          => $entity->getRawAttribute('id'),
-            'entity_type'        => $entity->getMorphClass(),
-            'action'             => $action,
-            'has_permission'     => $permissionAll,
+            'role_id' => $role->getRawAttribute('id'),
+            'entity_id' => $entity->getRawAttribute('id'),
+            'entity_type' => $entity->getMorphClass(),
+            'action' => $action,
+            'has_permission' => $permissionAll,
             'has_permission_own' => $permissionOwn,
-            'created_by'         => $entity->getRawAttribute('created_by')
+            'owned_by' => $entity->getRawAttribute('owned_by'),
         ];
     }
 
     /**
      * Checks if an entity has a restriction set upon it.
-     * @param Ownable $ownable
-     * @param $permission
-     * @return bool
+     * @param HasCreatorAndUpdater|HasOwner $ownable
      */
-    public function checkOwnableUserAccess(Ownable $ownable, $permission)
+    public function checkOwnableUserAccess(Model $ownable, string $permission): bool
     {
         $explodedPermission = explode('-', $permission);
 
-        $baseQuery = $ownable->where('id', '=', $ownable->id);
+        $baseQuery = $ownable->newQuery()->where('id', '=', $ownable->id);
         $action = end($explodedPermission);
-        $this->currentAction = $action;
+        $user = $this->currentUser();
 
         $nonJointPermissions = ['restrictions', 'image', 'attachment', 'comment'];
 
         // Handle non entity specific jointPermissions
         if (in_array($explodedPermission[0], $nonJointPermissions)) {
-            $allPermission = $this->currentUser() && $this->currentUser()->can($permission . '-all');
-            $ownPermission = $this->currentUser() && $this->currentUser()->can($permission . '-own');
-            $this->currentAction = 'view';
-            $isOwner = $this->currentUser() && $this->currentUser()->id === $ownable->created_by;
+            $allPermission = $user && $user->can($permission . '-all');
+            $ownPermission = $user && $user->can($permission . '-own');
+            $ownerField = ($ownable instanceof Entity) ? 'owned_by' : 'created_by';
+            $isOwner = $user && $user->id === $ownable->$ownerField;
             return ($allPermission || ($isOwner && $ownPermission));
         }
 
         // Handle abnormal create jointPermissions
         if ($action === 'create') {
-            $this->currentAction = $permission;
+            $action = $permission;
         }
 
-        $q = $this->entityRestrictionQuery($baseQuery)->count() > 0;
+        $hasAccess = $this->entityRestrictionQuery($baseQuery, $action)->count() > 0;
         $this->clean();
-        return $q;
+        return $hasAccess;
     }
 
     /**
      * Checks if a user has the given permission for any items in the system.
      * Can be passed an entity instance to filter on a specific type.
-     * @param string $permission
-     * @param string $entityClass
-     * @return bool
      */
-    public function checkUserHasPermissionOnAnything(string $permission, string $entityClass = null)
+    public function checkUserHasPermissionOnAnything(string $permission, ?string $entityClass = null): bool
     {
         $userRoleIds = $this->currentUser()->roles()->select('id')->pluck('id')->toArray();
         $userId = $this->currentUser()->id;
 
-        $permissionQuery = $this->db->table('joint_permissions')
+        $permissionQuery = JointPermission::query()
             ->where('action', '=', $permission)
             ->whereIn('role_id', $userRoleIds)
-            ->where(function ($query) use ($userId) {
-                $query->where('has_permission', '=', 1)
-                    ->orWhere(function ($query2) use ($userId) {
-                        $query2->where('has_permission_own', '=', 1)
-                            ->where('created_by', '=', $userId);
-                    });
+            ->where(function (Builder $query) use ($userId) {
+                $this->addJointHasPermissionCheck($query, $userId);
             });
 
         if (!is_null($entityClass)) {
-            $entityInstance = app()->make($entityClass);
+            $entityInstance = app($entityClass);
             $permissionQuery = $permissionQuery->where('entity_type', '=', $entityInstance->getMorphClass());
         }
 
@@ -588,46 +512,22 @@ class PermissionService
         return $hasPermission;
     }
 
-    /**
-     * Check if an entity has restrictions set on itself or its
-     * parent tree.
-     * @param \BookStack\Entities\Entity $entity
-     * @param $action
-     * @return bool|mixed
-     */
-    public function checkIfRestrictionsSet(Entity $entity, $action)
-    {
-        $this->currentAction = $action;
-        if ($entity->isA('page')) {
-            return $entity->restricted || ($entity->chapter && $entity->chapter->restricted) || $entity->book->restricted;
-        } elseif ($entity->isA('chapter')) {
-            return $entity->restricted || $entity->book->restricted;
-        } elseif ($entity->isA('book')) {
-            return $entity->restricted;
-        }
-    }
-
     /**
      * The general query filter to remove all entities
      * that the current user does not have access to.
-     * @param $query
-     * @return mixed
      */
-    protected function entityRestrictionQuery($query)
+    protected function entityRestrictionQuery(Builder $query, string $action): Builder
     {
-        $q = $query->where(function ($parentQuery) {
-            $parentQuery->whereHas('jointPermissions', function ($permissionQuery) {
-                $permissionQuery->whereIn('role_id', $this->getRoles())
-                    ->where('action', '=', $this->currentAction)
-                    ->where(function ($query) {
-                        $query->where('has_permission', '=', true)
-                            ->orWhere(function ($query) {
-                                $query->where('has_permission_own', '=', true)
-                                    ->where('created_by', '=', $this->currentUser()->id);
-                            });
+        $q = $query->where(function ($parentQuery) use ($action) {
+            $parentQuery->whereHas('jointPermissions', function ($permissionQuery) use ($action) {
+                $permissionQuery->whereIn('role_id', $this->getCurrentUserRoles())
+                    ->where('action', '=', $action)
+                    ->where(function (Builder $query) {
+                        $this->addJointHasPermissionCheck($query, $this->currentUser()->id);
                     });
             });
         });
+
         $this->clean();
         return $q;
     }
@@ -641,14 +541,10 @@ class PermissionService
         $this->clean();
         return $query->where(function (Builder $parentQuery) use ($ability) {
             $parentQuery->whereHas('jointPermissions', function (Builder $permissionQuery) use ($ability) {
-                $permissionQuery->whereIn('role_id', $this->getRoles())
+                $permissionQuery->whereIn('role_id', $this->getCurrentUserRoles())
                     ->where('action', '=', $ability)
                     ->where(function (Builder $query) {
-                        $query->where('has_permission', '=', true)
-                            ->orWhere(function (Builder $query) {
-                                $query->where('has_permission_own', '=', true)
-                                    ->where('created_by', '=', $this->currentUser()->id);
-                            });
+                        $this->addJointHasPermissionCheck($query, $this->currentUser()->id);
                     });
             });
         });
@@ -658,121 +554,101 @@ class PermissionService
      * Extend the given page query to ensure draft items are not visible
      * unless created by the given user.
      */
-    public function enforceDraftVisiblityOnQuery(Builder $query): Builder
+    public function enforceDraftVisibilityOnQuery(Builder $query): Builder
     {
         return $query->where(function (Builder $query) {
             $query->where('draft', '=', false)
                 ->orWhere(function (Builder $query) {
                     $query->where('draft', '=', true)
-                        ->where('created_by', '=', $this->currentUser()->id);
+                        ->where('owned_by', '=', $this->currentUser()->id);
                 });
         });
     }
 
     /**
-     * Add restrictions for a generic entity
-     * @param string $entityType
-     * @param Builder|\BookStack\Entities\Entity $query
-     * @param string $action
-     * @return Builder
+     * Add restrictions for a generic entity.
      */
-    public function enforceEntityRestrictions($entityType, $query, $action = 'view')
+    public function enforceEntityRestrictions(Entity $entity, Builder $query, string $action = 'view'): Builder
     {
-        if (strtolower($entityType) === 'page') {
+        if ($entity instanceof Page) {
             // Prevent drafts being visible to others.
-            $query = $query->where(function ($query) {
-                $query->where('draft', '=', false)
-                    ->orWhere(function ($query) {
-                        $query->where('draft', '=', true)
-                            ->where('created_by', '=', $this->currentUser()->id);
-                    });
-            });
+            $this->enforceDraftVisibilityOnQuery($query);
         }
 
-        $this->currentAction = $action;
-        return $this->entityRestrictionQuery($query);
+        return $this->entityRestrictionQuery($query, $action);
     }
 
     /**
      * Filter items that have entities set as a polymorphic relation.
-     * @param $query
-     * @param string $tableName
-     * @param string $entityIdColumn
-     * @param string $entityTypeColumn
-     * @param string $action
-     * @return QueryBuilder
      */
-    public function filterRestrictedEntityRelations($query, $tableName, $entityIdColumn, $entityTypeColumn, $action = 'view')
+    public function filterRestrictedEntityRelations(Builder $query, string $tableName, string $entityIdColumn, string $entityTypeColumn, string $action = 'view'): Builder
     {
-
-        $this->currentAction = $action;
         $tableDetails = ['tableName' => $tableName, 'entityIdColumn' => $entityIdColumn, 'entityTypeColumn' => $entityTypeColumn];
 
-        $q = $query->where(function ($query) use ($tableDetails) {
-            $query->whereExists(function ($permissionQuery) use (&$tableDetails) {
+        $q = $query->where(function ($query) use ($tableDetails, $action) {
+            $query->whereExists(function ($permissionQuery) use (&$tableDetails, $action) {
                 $permissionQuery->select('id')->from('joint_permissions')
                     ->whereRaw('joint_permissions.entity_id=' . $tableDetails['tableName'] . '.' . $tableDetails['entityIdColumn'])
                     ->whereRaw('joint_permissions.entity_type=' . $tableDetails['tableName'] . '.' . $tableDetails['entityTypeColumn'])
-                    ->where('action', '=', $this->currentAction)
-                    ->whereIn('role_id', $this->getRoles())
-                    ->where(function ($query) {
-                        $query->where('has_permission', '=', true)->orWhere(function ($query) {
-                            $query->where('has_permission_own', '=', true)
-                                ->where('created_by', '=', $this->currentUser()->id);
-                        });
+                    ->where('action', '=', $action)
+                    ->whereIn('role_id', $this->getCurrentUserRoles())
+                    ->where(function (QueryBuilder $query) {
+                        $this->addJointHasPermissionCheck($query, $this->currentUser()->id);
                     });
             });
         });
+
         $this->clean();
         return $q;
     }
 
     /**
      * Add conditions to a query to filter the selection to related entities
-     * where permissions are granted.
-     * @param $entityType
-     * @param $query
-     * @param $tableName
-     * @param $entityIdColumn
-     * @return mixed
+     * where view permissions are granted.
      */
-    public function filterRelatedEntity($entityType, $query, $tableName, $entityIdColumn)
+    public function filterRelatedEntity(string $entityClass, Builder $query, string $tableName, string $entityIdColumn): Builder
     {
-        $this->currentAction = 'view';
         $tableDetails = ['tableName' => $tableName, 'entityIdColumn' => $entityIdColumn];
+        $morphClass = app($entityClass)->getMorphClass();
 
-        $pageMorphClass = $this->entityProvider->get($entityType)->getMorphClass();
-
-        $q = $query->where(function ($query) use ($tableDetails, $pageMorphClass) {
-            $query->where(function ($query) use (&$tableDetails, $pageMorphClass) {
-                $query->whereExists(function ($permissionQuery) use (&$tableDetails, $pageMorphClass) {
+        $q = $query->where(function ($query) use ($tableDetails, $morphClass) {
+            $query->where(function ($query) use (&$tableDetails, $morphClass) {
+                $query->whereExists(function ($permissionQuery) use (&$tableDetails, $morphClass) {
                     $permissionQuery->select('id')->from('joint_permissions')
                         ->whereRaw('joint_permissions.entity_id=' . $tableDetails['tableName'] . '.' . $tableDetails['entityIdColumn'])
-                        ->where('entity_type', '=', $pageMorphClass)
-                        ->where('action', '=', $this->currentAction)
-                        ->whereIn('role_id', $this->getRoles())
-                        ->where(function ($query) {
-                            $query->where('has_permission', '=', true)->orWhere(function ($query) {
-                                $query->where('has_permission_own', '=', true)
-                                    ->where('created_by', '=', $this->currentUser()->id);
-                            });
+                        ->where('entity_type', '=', $morphClass)
+                        ->where('action', '=', 'view')
+                        ->whereIn('role_id', $this->getCurrentUserRoles())
+                        ->where(function (QueryBuilder $query) {
+                            $this->addJointHasPermissionCheck($query, $this->currentUser()->id);
                         });
                 });
             })->orWhere($tableDetails['entityIdColumn'], '=', 0);
         });
 
         $this->clean();
-
         return $q;
     }
 
     /**
-     * Get the current user
-     * @return \BookStack\Auth\User
+     * Add the query for checking the given user id has permission
+     * within the join_permissions table.
+     * @param QueryBuilder|Builder $query
      */
-    private function currentUser()
+    protected function addJointHasPermissionCheck($query, int $userIdToCheck)
     {
-        if ($this->currentUserModel === false) {
+        $query->where('has_permission', '=', true)->orWhere(function ($query) use ($userIdToCheck) {
+            $query->where('has_permission_own', '=', true)
+                ->where('owned_by', '=', $userIdToCheck);
+        });
+    }
+
+    /**
+     * Get the current user
+     */
+    private function currentUser(): User
+    {
+        if (is_null($this->currentUserModel)) {
             $this->currentUserModel = user();
         }
 
@@ -782,10 +658,9 @@ class PermissionService
     /**
      * Clean the cached user elements.
      */
-    private function clean()
+    private function clean(): void
     {
-        $this->currentUserModel = false;
-        $this->userRoles = false;
-        $this->isAdminUser = null;
+        $this->currentUserModel = null;
+        $this->userRoles = null;
     }
 }

app/Auth/Permissions/PermissionsRepo.php

@@ -1,10 +1,11 @@
 <?php namespace BookStack\Auth\Permissions;
 
+use BookStack\Actions\ActivityType;
 use BookStack\Auth\Role;
 use BookStack\Exceptions\PermissionsException;
+use BookStack\Facades\Activity;
 use Exception;
 use Illuminate\Database\Eloquent\Collection;
-use Illuminate\Support\Str;
 
 class PermissionsRepo
 {
@@ -60,6 +61,7 @@ class PermissionsRepo
         $permissions = isset($roleData['permissions']) ? array_keys($roleData['permissions']) : [];
         $this->assignRolePermissions($role, $permissions);
         $this->permissionService->buildJointPermissionForRole($role);
+        Activity::add(ActivityType::ROLE_CREATE, $role);
         return $role;
     }
 
@@ -88,12 +90,13 @@ class PermissionsRepo
         $role->fill($roleData);
         $role->save();
         $this->permissionService->buildJointPermissionForRole($role);
+        Activity::add(ActivityType::ROLE_UPDATE, $role);
     }
 
     /**
      * Assign an list of permission names to an role.
      */
-    public function assignRolePermissions(Role $role, array $permissionNameArray = [])
+    protected function assignRolePermissions(Role $role, array $permissionNameArray = [])
     {
         $permissions = [];
         $permissionNameArray = array_values($permissionNameArray);
@@ -137,6 +140,7 @@ class PermissionsRepo
         }
 
         $this->permissionService->deleteJointPermissionsForRole($role);
+        Activity::add(ActivityType::ROLE_DELETE, $role);
         $role->delete();
     }
 }

app/Auth/Role.php

@@ -2,8 +2,10 @@
 
 use BookStack\Auth\Permissions\JointPermission;
 use BookStack\Auth\Permissions\RolePermission;
+use BookStack\Interfaces\Loggable;
 use BookStack\Model;
 use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 
 /**
@@ -14,7 +16,7 @@ use Illuminate\Database\Eloquent\Relations\HasMany;
  * @property string $external_auth_id
  * @property string $system_name
  */
-class Role extends Model
+class Role extends Model implements Loggable
 {
 
     protected $fillable = ['display_name', 'description', 'external_auth_id'];
@@ -22,7 +24,7 @@ class Role extends Model
     /**
      * The roles that belong to the role.
      */
-    public function users()
+    public function users(): BelongsToMany
     {
         return $this->belongsToMany(User::class)->orderBy('name', 'asc');
     }
@@ -38,7 +40,7 @@ class Role extends Model
     /**
      * The RolePermissions that belong to the role.
      */
-    public function permissions()
+    public function permissions(): BelongsToMany
     {
         return $this->belongsToMany(RolePermission::class, 'permission_role', 'role_id', 'permission_id');
     }
@@ -104,4 +106,12 @@ class Role extends Model
     {
         return static::query()->where('system_name', '!=', 'admin')->get();
     }
+
+    /**
+     * @inheritdoc
+     */
+    public function logDescriptor(): string
+    {
+        return "({$this->id}) {$this->display_name}";
+    }
 }

app/Auth/SocialAccount.php

@@ -1,8 +1,14 @@
 <?php namespace BookStack\Auth;
 
+use BookStack\Interfaces\Loggable;
 use BookStack\Model;
 
-class SocialAccount extends Model
+/**
+ * Class SocialAccount
+ * @property string $driver
+ * @property User $user
+ */
+class SocialAccount extends Model implements Loggable
 {
 
     protected $fillable = ['user_id', 'driver', 'driver_id', 'timestamps'];
@@ -11,4 +17,12 @@ class SocialAccount extends Model
     {
         return $this->belongsTo(User::class);
     }
+
+    /**
+     * @inheritDoc
+     */
+    public function logDescriptor(): string
+    {
+        return "{$this->driver}; {$this->user->logDescriptor()}";
+    }
 }

app/Auth/User.php

@@ -1,23 +1,30 @@
 <?php namespace BookStack\Auth;
 
 use BookStack\Api\ApiToken;
+use BookStack\Entities\Tools\SlugGenerator;
+use BookStack\Interfaces\Loggable;
+use BookStack\Interfaces\Sluggable;
 use BookStack\Model;
 use BookStack\Notifications\ResetPassword;
 use BookStack\Uploads\Image;
 use Carbon\Carbon;
+use Exception;
 use Illuminate\Auth\Authenticatable;
 use Illuminate\Auth\Passwords\CanResetPassword;
 use Illuminate\Contracts\Auth\Authenticatable as AuthenticatableContract;
 use Illuminate\Contracts\Auth\CanResetPassword as CanResetPasswordContract;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Notifications\Notifiable;
+use Illuminate\Support\Collection;
 
 /**
  * Class User
- * @package BookStack\Auth
  * @property string $id
  * @property string $name
+ * @property string $slug
  * @property string $email
  * @property string $password
  * @property Carbon $created_at
@@ -26,8 +33,9 @@ use Illuminate\Notifications\Notifiable;
  * @property int $image_id
  * @property string $external_auth_id
  * @property string $system_name
+ * @property Collection $roles
  */
-class User extends Model implements AuthenticatableContract, CanResetPasswordContract
+class User extends Model implements AuthenticatableContract, CanResetPasswordContract, Loggable, Sluggable
 {
     use Authenticatable, CanResetPassword, Notifiable;
 
@@ -43,6 +51,8 @@ class User extends Model implements AuthenticatableContract, CanResetPasswordCon
      */
     protected $fillable = ['name', 'email'];
 
+    protected $casts = ['last_activity_at' => 'datetime'];
+
     /**
      * The attributes excluded from the model's JSON form.
      * @var array
@@ -54,7 +64,7 @@ class User extends Model implements AuthenticatableContract, CanResetPasswordCon
 
     /**
      * This holds the user's permissions when loaded.
-     * @var array
+     * @var ?Collection
      */
     protected $permissions;
 
@@ -66,23 +76,21 @@ class User extends Model implements AuthenticatableContract, CanResetPasswordCon
 
     /**
      * Returns the default public user.
-     * @return User
      */
-    public static function getDefault()
+    public static function getDefault(): User
     {
         if (!is_null(static::$defaultUser)) {
             return static::$defaultUser;
         }
         
-        static::$defaultUser = static::where('system_name', '=', 'public')->first();
+        static::$defaultUser = static::query()->where('system_name', '=', 'public')->first();
         return static::$defaultUser;
     }
 
     /**
      * Check if the user is the default public user.
-     * @return bool
      */
-    public function isDefault()
+    public function isDefault(): bool
     {
         return $this->system_name === 'public';
     }
@@ -109,12 +117,10 @@ class User extends Model implements AuthenticatableContract, CanResetPasswordCon
 
     /**
      * Check if the user has a role.
-     * @param $role
-     * @return mixed
      */
-    public function hasSystemRole($role)
+    public function hasSystemRole(string $roleSystemName): bool
     {
-        return $this->roles->pluck('system_name')->contains($role);
+        return $this->roles->pluck('system_name')->contains($roleSystemName);
     }
 
     /**
@@ -128,35 +134,44 @@ class User extends Model implements AuthenticatableContract, CanResetPasswordCon
         }
     }
 
-    /**
-     * Get all permissions belonging to a the current user.
-     * @param bool $cache
-     * @return \Illuminate\Database\Eloquent\Relations\HasManyThrough
-     */
-    public function permissions($cache = true)
-    {
-        if (isset($this->permissions) && $cache) {
-            return $this->permissions;
-        }
-        $this->load('roles.permissions');
-        $permissions = $this->roles->map(function ($role) {
-            return $role->permissions;
-        })->flatten()->unique();
-        $this->permissions = $permissions;
-        return $permissions;
-    }
-
     /**
      * Check if the user has a particular permission.
-     * @param $permissionName
-     * @return bool
      */
-    public function can($permissionName)
+    public function can(string $permissionName): bool
     {
         if ($this->email === 'guest') {
             return false;
         }
-        return $this->permissions()->pluck('name')->contains($permissionName);
+
+        return $this->permissions()->contains($permissionName);
+    }
+
+    /**
+     * Get all permissions belonging to a the current user.
+     */
+    protected function permissions(): Collection
+    {
+        if (isset($this->permissions)) {
+            return $this->permissions;
+        }
+
+        $this->permissions = $this->newQuery()->getConnection()->table('role_user', 'ru')
+            ->select('role_permissions.name as name')->distinct()
+            ->leftJoin('permission_role', 'ru.role_id', '=', 'permission_role.role_id')
+            ->leftJoin('role_permissions', 'permission_role.permission_id', '=', 'role_permissions.id')
+            ->where('ru.user_id', '=', $this->id)
+            ->get()
+            ->pluck('name');
+
+        return $this->permissions;
+    }
+
+    /**
+     * Clear any cached permissions on this instance.
+     */
+    public function clearPermissionCache()
+    {
+        $this->permissions = null;
     }
 
     /**
@@ -169,9 +184,8 @@ class User extends Model implements AuthenticatableContract, CanResetPasswordCon
 
     /**
      * Get the social account associated with this user.
-     * @return \Illuminate\Database\Eloquent\Relations\HasMany
      */
-    public function socialAccounts()
+    public function socialAccounts(): HasMany
     {
         return $this->hasMany(SocialAccount::class);
     }
@@ -192,11 +206,9 @@ class User extends Model implements AuthenticatableContract, CanResetPasswordCon
     }
 
     /**
-     * Returns the user's avatar,
-     * @param int $size
-     * @return string
+     * Returns a URL to the user's avatar
      */
-    public function getAvatar($size = 50)
+    public function getAvatar(int $size = 50): string
     {
         $default = url('/user_avatar.png');
         $imageId = $this->image_id;
@@ -206,7 +218,7 @@ class User extends Model implements AuthenticatableContract, CanResetPasswordCon
 
         try {
             $avatar = $this->avatar ? url($this->avatar->getThumb($size, $size, false)) : $default;
-        } catch (\Exception $err) {
+        } catch (Exception $err) {
             $avatar = $default;
         }
         return $avatar;
@@ -214,9 +226,8 @@ class User extends Model implements AuthenticatableContract, CanResetPasswordCon
 
     /**
      * Get the avatar for the user.
-     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
      */
-    public function avatar()
+    public function avatar(): BelongsTo
     {
         return $this->belongsTo(Image::class, 'image_id');
     }
@@ -229,6 +240,19 @@ class User extends Model implements AuthenticatableContract, CanResetPasswordCon
         return $this->hasMany(ApiToken::class);
     }
 
+    /**
+     * Get the last activity time for this user.
+     */
+    public function scopeWithLastActivityAt(Builder $query)
+    {
+        $query->addSelect(['activities.created_at as last_activity_at'])
+            ->leftJoinSub(function (\Illuminate\Database\Query\Builder $query) {
+                $query->from('activities')->select('user_id')
+                    ->selectRaw('max(created_at) as created_at')
+                    ->groupBy('user_id');
+            }, 'activities', 'users.id', '=', 'activities.user_id');
+    }
+
     /**
      * Get the url for editing this user.
      */
@@ -243,15 +267,13 @@ class User extends Model implements AuthenticatableContract, CanResetPasswordCon
      */
     public function getProfileUrl(): string
     {
-        return url('/user/' . $this->id);
+        return url('/user/' . $this->slug);
     }
 
     /**
      * Get a shortened version of the user's name.
-     * @param int $chars
-     * @return string
      */
-    public function getShortName($chars = 8)
+    public function getShortName(int $chars = 8): string
     {
         if (mb_strlen($this->name) <= $chars) {
             return $this->name;
@@ -274,4 +296,21 @@ class User extends Model implements AuthenticatableContract, CanResetPasswordCon
     {
         $this->notify(new ResetPassword($token));
     }
+
+    /**
+     * @inheritdoc
+     */
+    public function logDescriptor(): string
+    {
+        return "({$this->id}) {$this->name}";
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function refreshSlug(): string
+    {
+        $this->slug = app(SlugGenerator::class)->generate($this);
+        return $this->slug;
+    }
 }

app/Auth/UserRepo.php

@@ -1,31 +1,32 @@
 <?php namespace BookStack\Auth;
 
 use Activity;
-use BookStack\Entities\Book;
-use BookStack\Entities\Bookshelf;
-use BookStack\Entities\Chapter;
-use BookStack\Entities\Page;
+use BookStack\Entities\EntityProvider;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Bookshelf;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Models\Page;
 use BookStack\Exceptions\NotFoundException;
 use BookStack\Exceptions\UserUpdateException;
 use BookStack\Uploads\Image;
+use BookStack\Uploads\UserAvatars;
 use Exception;
 use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Pagination\LengthAwarePaginator;
 use Images;
 use Log;
 
 class UserRepo
 {
-
-    protected $user;
-    protected $role;
+    protected $userAvatar;
 
     /**
      * UserRepo constructor.
      */
-    public function __construct(User $user, Role $role)
+    public function __construct(UserAvatars $userAvatar)
     {
-        $this->user = $user;
-        $this->role = $role;
+        $this->userAvatar = $userAvatar;
     }
 
     /**
@@ -33,36 +34,44 @@ class UserRepo
      */
     public function getByEmail(string $email): ?User
     {
-        return $this->user->where('email', '=', $email)->first();
+        return User::query()->where('email', '=', $email)->first();
     }
 
     /**
-     * @param int $id
-     * @return User
+     * Get a user by their ID.
      */
-    public function getById($id)
+    public function getById(int $id): User
     {
-        return $this->user->newQuery()->findOrFail($id);
+        return User::query()->findOrFail($id);
+    }
+
+    /**
+     * Get a user by their slug.
+     */
+    public function getBySlug(string $slug): User
+    {
+        return User::query()->where('slug', '=', $slug)->firstOrFail();
     }
 
     /**
      * Get all the users with their permissions.
-     * @return Builder|static
      */
-    public function getAllUsers()
+    public function getAllUsers(): Collection
     {
-        return $this->user->with('roles', 'avatar')->orderBy('name', 'asc')->get();
+        return User::query()->with('roles', 'avatar')->orderBy('name', 'asc')->get();
     }
 
     /**
      * Get all the users with their permissions in a paginated format.
-     * @param int $count
-     * @param $sortData
-     * @return Builder|static
      */
-    public function getAllUsersPaginatedAndSorted($count, $sortData)
+    public function getAllUsersPaginatedAndSorted(int $count, array $sortData): LengthAwarePaginator
     {
-        $query = $this->user->with('roles', 'avatar')->orderBy($sortData['sort'], $sortData['order']);
+        $sort = $sortData['sort'];
+
+        $query = User::query()->select(['*'])
+            ->withLastActivityAt()
+            ->with(['roles', 'avatar'])
+            ->orderBy($sort, $sortData['order']);
 
         if ($sortData['search']) {
             $term = '%' . $sortData['search'] . '%';
@@ -89,14 +98,12 @@ class UserRepo
 
     /**
      * Assign a user to a system-level role.
-     * @param User $user
-     * @param $systemRoleName
      * @throws NotFoundException
      */
-    public function attachSystemRole(User $user, $systemRoleName)
+    public function attachSystemRole(User $user, string $systemRoleName)
     {
-        $role = $this->role->newQuery()->where('system_name', '=', $systemRoleName)->first();
-        if ($role === null) {
+        $role = Role::getSystemRole($systemRoleName);
+        if (is_null($role)) {
             throw new NotFoundException("Role '{$systemRoleName}' not found");
         }
         $user->attachRole($role);
@@ -104,26 +111,23 @@ class UserRepo
 
     /**
      * Checks if the give user is the only admin.
-     * @param User $user
-     * @return bool
      */
-    public function isOnlyAdmin(User $user)
+    public function isOnlyAdmin(User $user): bool
     {
         if (!$user->hasSystemRole('admin')) {
             return false;
         }
 
-        $adminRole = $this->role->getSystemRole('admin');
-        if ($adminRole->users->count() > 1) {
+        $adminRole = Role::getSystemRole('admin');
+        if ($adminRole->users()->count() > 1) {
             return false;
         }
+
         return true;
     }
 
     /**
      * Set the assigned user roles via an array of role IDs.
-     * @param User $user
-     * @param array $roles
      * @throws UserUpdateException
      */
     public function setUserRoles(User $user, array $roles)
@@ -138,14 +142,11 @@ class UserRepo
     /**
      * Check if the given user is the last admin and their new roles no longer
      * contains the admin role.
-     * @param User $user
-     * @param array $newRoles
-     * @return bool
      */
     protected function demotingLastAdmin(User $user, array $newRoles) : bool
     {
         if ($this->isOnlyAdmin($user)) {
-            $adminRole = $this->role->getSystemRole('admin');
+            $adminRole = Role::getSystemRole('admin');
             if (!in_array(strval($adminRole->id), $newRoles)) {
                 return true;
             }
@@ -159,41 +160,65 @@ class UserRepo
      */
     public function create(array $data, bool $emailConfirmed = false): User
     {
-        return $this->user->forceCreate([
+        $details = [
             'name'     => $data['name'],
             'email'    => $data['email'],
             'password' => bcrypt($data['password']),
             'email_confirmed' => $emailConfirmed,
             'external_auth_id' => $data['external_auth_id'] ?? '',
-        ]);
+        ];
+
+        $user = new User();
+        $user->forceFill($details);
+        $user->refreshSlug();
+        $user->save();
+
+        return $user;
     }
 
     /**
      * Remove the given user from storage, Delete all related content.
-     * @param User $user
      * @throws Exception
      */
-    public function destroy(User $user)
+    public function destroy(User $user, ?int $newOwnerId = null)
     {
         $user->socialAccounts()->delete();
         $user->apiTokens()->delete();
         $user->delete();
         
         // Delete user profile images
-        $profileImages = Image::where('type', '=', 'user')->where('uploaded_to', '=', $user->id)->get();
+        $profileImages = Image::query()->where('type', '=', 'user')
+            ->where('uploaded_to', '=', $user->id)
+            ->get();
+
         foreach ($profileImages as $image) {
             Images::destroy($image);
         }
+
+        if (!empty($newOwnerId)) {
+            $newOwner = User::query()->find($newOwnerId);
+            if (!is_null($newOwner)) {
+                $this->migrateOwnership($user, $newOwner);
+            }
+        }
+    }
+
+    /**
+     * Migrate ownership of items in the system from one user to another.
+     */
+    protected function migrateOwnership(User $fromUser, User $toUser)
+    {
+        $entities = (new EntityProvider)->all();
+        foreach ($entities as $instance) {
+            $instance->newQuery()->where('owned_by', '=', $fromUser->id)
+                ->update(['owned_by' => $toUser->id]);
+        }
     }
 
     /**
      * Get the latest activity for a user.
-     * @param User $user
-     * @param int $count
-     * @param int $page
-     * @return array
      */
-    public function getActivity(User $user, $count = 20, $page = 0)
+    public function getActivity(User $user, int $count = 20, int $page = 0): array
     {
         return Activity::userActivity($user, $count, $page);
     }
@@ -234,33 +259,22 @@ class UserRepo
 
     /**
      * Get the roles in the system that are assignable to a user.
-     * @return mixed
      */
-    public function getAllRoles()
+    public function getAllRoles(): Collection
     {
-        return $this->role->newQuery()->orderBy('display_name', 'asc')->get();
+        return Role::query()->orderBy('display_name', 'asc')->get();
     }
 
     /**
      * Get an avatar image for a user and set it as their avatar.
      * Returns early if avatars disabled or not set in config.
-     * @param User $user
-     * @return bool
      */
-    public function downloadAndAssignUserAvatar(User $user)
+    public function downloadAndAssignUserAvatar(User $user): void
     {
-        if (!Images::avatarFetchEnabled()) {
-            return false;
-        }
-
         try {
-            $avatar = Images::saveUserAvatar($user);
-            $user->avatar()->associate($avatar);
-            $user->save();
-            return true;
+            $this->userAvatar->fetchAndAssignToUser($user);
         } catch (Exception $e) {
             Log::error('Failed to save user avatar image');
-            return false;
         }
     }
 }

app/Config/app.php

@@ -19,18 +19,18 @@ return [
     // private configuration variables so should remain disabled in public.
     'debug' => env('APP_DEBUG', false),
 
-    // Set the default view type for various lists. Can be overridden by user preferences.
-    // These will be used for public viewers and users that have not set a preference.
-    'views' => [
-        'books' => env('APP_VIEWS_BOOKS', 'list'),
-        'bookshelves' => env('APP_VIEWS_BOOKSHELVES', 'grid'),
-    ],
-
     // The number of revisions to keep in the database.
     // Once this limit is reached older revisions will be deleted.
     // If set to false then a limit will not be enforced.
     'revision_limit' => env('REVISION_LIMIT', 50),
 
+    // The number of days that content will remain in the recycle bin before
+    // being considered for auto-removal. It is not a guarantee that content will
+    // be removed after this time.
+    // Set to 0 for no recycle bin functionality.
+    // Set to -1 for unlimited recycle bin lifetime.
+    'recycle_bin_lifetime' => env('RECYCLE_BIN_LIFETIME', 30),
+
     // Allow <script> tags to entered within page content.
     // <script> tags are escaped by default.
     // Even when overridden the WYSIWYG editor may still escape script content.
@@ -45,6 +45,10 @@ return [
     // and used by BookStack in URL generation.
     'url' => env('APP_URL', '') === 'http://bookstack.dev' ? '' : env('APP_URL', ''),
 
+    // A list of hosts that BookStack can be iframed within.
+    // Space separated if multiple. BookStack host domain is auto-inferred.
+    'iframe_hosts' => env('ALLOWED_IFRAME_HOSTS', null),
+
     // Application timezone for back-end date functions.
     'timezone' => env('APP_TIMEZONE', 'UTC'),
 
@@ -52,7 +56,7 @@ return [
     'locale' => env('APP_LANG', 'en'),
 
     // Locales available
-    'locales' => ['en', 'ar', 'bg', 'cs', 'da', 'de', 'de_informal', 'es', 'es_AR', 'fa', 'fr', 'he', 'hu', 'it', 'ja', 'ko', 'nl', 'pt', 'pt_BR', 'sk', 'sl', 'sv', 'pl',  'ru', 'th', 'tr', 'uk', 'vi', 'zh_CN', 'zh_TW',],
+    'locales' => ['en', 'ar', 'bg', 'bs', 'ca', 'cs', 'da', 'de', 'de_informal', 'es', 'es_AR', 'fa', 'fr', 'he', 'hu', 'id', 'it', 'ja', 'ko', 'lv', 'nl', 'nb', 'pt', 'pt_BR', 'sk', 'sl', 'sv', 'pl',  'ru', 'th', 'tr', 'uk', 'vi', 'zh_CN', 'zh_TW',],
 
     //  Application Fallback Locale
     'fallback_locale' => 'en',
@@ -111,12 +115,14 @@ return [
         BookStack\Providers\TranslationServiceProvider::class,
 
         // BookStack custom service providers
+        BookStack\Providers\ThemeServiceProvider::class,
         BookStack\Providers\AuthServiceProvider::class,
         BookStack\Providers\AppServiceProvider::class,
         BookStack\Providers\BroadcastServiceProvider::class,
         BookStack\Providers\EventServiceProvider::class,
         BookStack\Providers\RouteServiceProvider::class,
         BookStack\Providers\CustomFacadeProvider::class,
+        BookStack\Providers\CustomValidationServiceProvider::class,
     ],
 
     /*
@@ -178,10 +184,10 @@ return [
 
         // Custom BookStack
         'Activity' => BookStack\Facades\Activity::class,
-        'Setting'  => BookStack\Facades\Setting::class,
         'Views'    => BookStack\Facades\Views::class,
         'Images'   => BookStack\Facades\Images::class,
         'Permissions' => BookStack\Facades\Permissions::class,
+        'Theme'    => BookStack\Facades\Theme::class,
 
     ],
 

app/Config/database.php

@@ -85,6 +85,7 @@ return [
             'database'  => 'bookstack-test',
             'username'  => env('MYSQL_USER', 'bookstack-test'),
             'password'  => env('MYSQL_PASSWORD', 'bookstack-test'),
+            'port'      => $mysql_port,
             'charset'   => 'utf8mb4',
             'collation' => 'utf8mb4_unicode_ci',
             'prefix'    => '',

app/Config/dompdf.php

@@ -38,7 +38,7 @@ return [
          * Times-Roman, Times-Bold, Times-BoldItalic, Times-Italic,
          * Symbol, ZapfDingbats.
          */
-        "DOMPDF_FONT_DIR" => app_path('vendor/dompdf/dompdf/lib/fonts/'), //storage_path('fonts/'), // advised by dompdf (https://github.com/dompdf/dompdf/pull/782)
+        "DOMPDF_FONT_DIR" => storage_path('fonts/'),  // advised by dompdf (https://github.com/dompdf/dompdf/pull/782)
 
         /**
          * The location of the DOMPDF font cache directory
@@ -219,7 +219,7 @@ return [
          *
          * @var bool
          */
-        "DOMPDF_ENABLE_JAVASCRIPT" => true,
+        "DOMPDF_ENABLE_JAVASCRIPT" => false,
 
         /**
          * Enable remote file access

app/Config/mail.php

@@ -11,7 +11,7 @@
 return [
 
     // Mail driver to use.
-    // Options: smtp, mail, sendmail, log
+    // Options: smtp, sendmail, log, array
     'driver' => env('MAIL_DRIVER', 'smtp'),
 
     // SMTP host address

app/Config/saml2.php

@@ -1,5 +1,7 @@
 <?php
 
+$SAML2_IDP_AUTHNCONTEXT = env('SAML2_IDP_AUTHNCONTEXT', true);
+
 return [
 
     // Display name, shown to users, for SAML2 option
@@ -139,6 +141,14 @@ return [
             //      )
             // ),
         ],
+        'security' => [
+            // SAML2 Authn context
+            // When set to false no AuthContext will be sent in the AuthNRequest,
+            // When set to true (Default) you will get an AuthContext 'exact' 'urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport'.
+            // Multiple forced values can be passed via a space separated array, For example:
+            // SAML2_IDP_AUTHNCONTEXT="urn:federation:authentication:windows urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport"
+            'requestedAuthnContext' => is_string($SAML2_IDP_AUTHNCONTEXT) ? explode(' ', $SAML2_IDP_AUTHNCONTEXT) : $SAML2_IDP_AUTHNCONTEXT,
+        ],
     ],
 
 ];

app/Config/services.php

@@ -132,6 +132,7 @@ return [
         'group_attribute' => env('LDAP_GROUP_ATTRIBUTE', 'memberOf'),
         'remove_from_groups' => env('LDAP_REMOVE_FROM_GROUPS', false),
         'tls_insecure' => env('LDAP_TLS_INSECURE', false),
+        'start_tls' => env('LDAP_START_TLS', false),
     ],
 
 ];

app/Config/session.php

@@ -1,5 +1,7 @@
 <?php
 
+use \Illuminate\Support\Str;
+
 /**
  * Session configuration options.
  *
@@ -57,7 +59,7 @@ return [
     // The session cookie path determines the path for which the cookie will
     // be regarded as available. Typically, this will be the root path of
     // your application but you are free to change this when necessary.
-    'path' => '/',
+    'path' => '/' . (explode('/', env('APP_URL', ''), 4)[3] ?? ''),
 
     // Session Cookie Domain
     // Here you may change the domain of the cookie used to identify a session
@@ -69,7 +71,8 @@ return [
     // By setting this option to true, session cookies will only be sent back
     // to the server if the browser has a HTTPS connection. This will keep
     // the cookie from being sent to you if it can not be done securely.
-    'secure' => env('SESSION_SECURE_COOKIE', false),
+    'secure' => env('SESSION_SECURE_COOKIE', null)
+        ?? Str::startsWith(env('APP_URL'), 'https:'),
 
     // HTTP Access Only
     // Setting this value to true will prevent JavaScript from accessing the
@@ -80,6 +83,6 @@ return [
     // This option determines how your cookies behave when cross-site requests
     // take place, and can be used to mitigate CSRF attacks. By default, we
     // do not enable this as other CSRF protection services are in place.
-    // Options: lax, strict
-    'same_site' => null,
+    // Options: lax, strict, none
+    'same_site' => 'lax',
 ];

app/Config/setting-defaults.php

@@ -24,4 +24,12 @@ return [
     'app-custom-head'      => false,
     'registration-enabled' => false,
 
+    // User-level default settings
+    'user' => [
+        'dark-mode-enabled' => env('APP_DEFAULT_DARK_MODE', false),
+        'bookshelves_view_type' => env('APP_VIEWS_BOOKSHELVES', 'grid'),
+        'bookshelf_view_type' =>env('APP_VIEWS_BOOKSHELF', 'grid'),
+        'books_view_type' => env('APP_VIEWS_BOOKS', 'grid'),
+    ],
+
 ];

app/Console/Commands/CleanupImages.php

@@ -14,8 +14,8 @@ class CleanupImages extends Command
      * @var string
      */
     protected $signature = 'bookstack:cleanup-images
-                            {--a|all : Include images that are used in page revisions}
-                            {--f|force : Actually run the deletions}
+                            {--a|all : Also delete images that are only used in old revisions}
+                            {--f|force : Actually run the deletions, Defaults to a dry-run}
                             ';
 
     /**

app/Console/Commands/ClearRevisions.php

@@ -2,7 +2,7 @@
 
 namespace BookStack\Console\Commands;
 
-use BookStack\Entities\PageRevision;
+use BookStack\Entities\Models\PageRevision;
 use Illuminate\Console\Command;
 
 class ClearRevisions extends Command

app/Console/Commands/CopyShelfPermissions.php

@@ -2,7 +2,7 @@
 
 namespace BookStack\Console\Commands;
 
-use BookStack\Entities\Bookshelf;
+use BookStack\Entities\Models\Bookshelf;
 use BookStack\Entities\Repos\BookshelfRepo;
 use Illuminate\Console\Command;
 

app/Console/Commands/CreateAdmin.php

@@ -28,8 +28,6 @@ class CreateAdmin extends Command
 
     /**
      * Create a new command instance.
-     *
-     * @param UserRepo $userRepo
      */
     public function __construct(UserRepo $userRepo)
     {

app/Console/Commands/RegenerateSearch.php

@@ -2,7 +2,7 @@
 
 namespace BookStack\Console\Commands;
 
-use BookStack\Entities\SearchService;
+use BookStack\Entities\Tools\SearchIndex;
 use DB;
 use Illuminate\Console\Command;
 
@@ -22,17 +22,15 @@ class RegenerateSearch extends Command
      */
     protected $description = 'Re-index all content for searching';
 
-    protected $searchService;
+    protected $searchIndex;
 
     /**
      * Create a new command instance.
-     *
-     * @param SearchService $searchService
      */
-    public function __construct(SearchService $searchService)
+    public function __construct(SearchIndex $searchIndex)
     {
         parent::__construct();
-        $this->searchService = $searchService;
+        $this->searchIndex = $searchIndex;
     }
 
     /**
@@ -45,10 +43,9 @@ class RegenerateSearch extends Command
         $connection = DB::getDefaultConnection();
         if ($this->option('database') !== null) {
             DB::setDefaultConnection($this->option('database'));
-            $this->searchService->setConnection(DB::connection($this->option('database')));
         }
 
-        $this->searchService->indexAllEntities();
+        $this->searchIndex->indexAllEntities();
         DB::setDefaultConnection($connection);
         $this->comment('Search index regenerated');
     }

app/Console/Commands/UpdateUrl.php

@@ -4,6 +4,7 @@ namespace BookStack\Console\Commands;
 
 use Illuminate\Console\Command;
 use Illuminate\Database\Connection;
+use Illuminate\Support\Facades\DB;
 
 class UpdateUrl extends Command
 {
@@ -60,22 +61,50 @@ class UpdateUrl extends Command
             "attachments" => ["path"],
             "pages" => ["html", "text", "markdown"],
             "images" => ["url"],
+            "settings" => ["value"],
             "comments" => ["html", "text"],
         ];
 
         foreach ($columnsToUpdateByTable as $table => $columns) {
             foreach ($columns as $column) {
-                $changeCount = $this->db->table($table)->update([
-                    $column => $this->db->raw("REPLACE({$column}, '{$oldUrl}', '{$newUrl}')")
-                ]);
+                $changeCount = $this->replaceValueInTable($table, $column, $oldUrl, $newUrl);
                 $this->info("Updated {$changeCount} rows in {$table}->{$column}");
             }
         }
 
+        $jsonColumnsToUpdateByTable = [
+            "settings" => ["value"],
+        ];
+
+        foreach ($jsonColumnsToUpdateByTable as $table => $columns) {
+            foreach ($columns as $column) {
+                $oldJson = trim(json_encode($oldUrl), '"');
+                $newJson = trim(json_encode($newUrl), '"');
+                $changeCount = $this->replaceValueInTable($table, $column, $oldJson, $newJson);
+                $this->info("Updated {$changeCount} JSON encoded rows in {$table}->{$column}");
+            }
+        }
+
         $this->info("URL update procedure complete.");
+        $this->info('============================================================================');
+        $this->info('Be sure to run "php artisan cache:clear" to clear any old URLs in the cache.');
+        $this->info('============================================================================');
         return 0;
     }
 
+    /**
+     * Perform a find+replace operations in the provided table and column.
+     * Returns the count of rows changed.
+     */
+    protected function replaceValueInTable(string $table, string $column, string $oldUrl, string $newUrl): int
+    {
+        $oldQuoted = $this->db->getPdo()->quote($oldUrl);
+        $newQuoted = $this->db->getPdo()->quote($newUrl);
+        return $this->db->table($table)->update([
+            $column => $this->db->raw("REPLACE({$column}, {$oldQuoted}, {$newQuoted})")
+        ]);
+    }
+
     /**
      * Warn the user of the dangers of this operation.
      * Returns a boolean indicating if they've accepted the warnings.

app/Entities/BreadcrumbsViewComposer.php

@@ -1,6 +1,7 @@
 <?php namespace BookStack\Entities;
 
-use BookStack\Entities\Managers\EntityContext;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Tools\ShelfContext;
 use Illuminate\View\View;
 
 class BreadcrumbsViewComposer
@@ -10,9 +11,9 @@ class BreadcrumbsViewComposer
 
     /**
      * BreadcrumbsViewComposer constructor.
-     * @param EntityContext $entityContextManager
+     * @param ShelfContext $entityContextManager
      */
-    public function __construct(EntityContext $entityContextManager)
+    public function __construct(ShelfContext $entityContextManager)
     {
         $this->entityContextManager = $entityContextManager;
     }

app/Entities/Chapter.php

@@ -1,64 +0,0 @@
-<?php namespace BookStack\Entities;
-
-use Illuminate\Support\Collection;
-
-/**
- * Class Chapter
- * @property Collection<Page> $pages
- */
-class Chapter extends BookChild
-{
-    public $searchFactor = 1.3;
-
-    protected $fillable = ['name', 'description', 'priority', 'book_id'];
-    protected $hidden = ['restricted', 'pivot'];
-
-    /**
-     * Get the pages that this chapter contains.
-     * @param string $dir
-     * @return mixed
-     */
-    public function pages($dir = 'ASC')
-    {
-        return $this->hasMany(Page::class)->orderBy('priority', $dir);
-    }
-
-    /**
-     * Get the url of this chapter.
-     * @param string|bool $path
-     * @return string
-     */
-    public function getUrl($path = false)
-    {
-        $bookSlug = $this->getAttribute('bookSlug') ? $this->getAttribute('bookSlug') : $this->book->slug;
-        $fullPath = '/books/' . urlencode($bookSlug) . '/chapter/' . urlencode($this->slug);
-
-        if ($path !== false) {
-            $fullPath .= '/' . trim($path, '/');
-        }
-
-        return url($fullPath);
-    }
-
-    /**
-     * Get an excerpt of this chapter's description to the specified length or less.
-     * @param int $length
-     * @return string
-     */
-    public function getExcerpt(int $length = 100)
-    {
-        $description = $this->text ?? $this->description;
-        return mb_strlen($description) > $length ? mb_substr($description, 0, $length-3) . '...' : $description;
-    }
-
-    /**
-     * Get the visible pages in this chapter.
-     */
-    public function getVisiblePages(): Collection
-    {
-        return $this->pages()->visible()
-        ->orderBy('draft', 'desc')
-        ->orderBy('priority', 'asc')
-        ->get();
-    }
-}

app/Entities/EntityProvider.php

@@ -1,13 +1,18 @@
 <?php namespace BookStack\Entities;
 
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Bookshelf;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Models\Entity;
+use BookStack\Entities\Models\Page;
+use BookStack\Entities\Models\PageRevision;
+
 /**
  * Class EntityProvider
  *
  * Provides access to the core entity models.
  * Wrapped up in this provider since they are often used together
  * so this is a neater alternative to injecting all in individually.
- *
- * @package BookStack\Entities
  */
 class EntityProvider
 {
@@ -37,26 +42,20 @@ class EntityProvider
      */
     public $pageRevision;
 
-    /**
-     * EntityProvider constructor.
-     */
-    public function __construct(
-        Bookshelf $bookshelf,
-        Book $book,
-        Chapter $chapter,
-        Page $page,
-        PageRevision $pageRevision
-    ) {
-        $this->bookshelf = $bookshelf;
-        $this->book = $book;
-        $this->chapter = $chapter;
-        $this->page = $page;
-        $this->pageRevision = $pageRevision;
+
+    public function __construct()
+    {
+        $this->bookshelf = new Bookshelf();
+        $this->book = new Book();
+        $this->chapter = new Chapter();
+        $this->page = new Page();
+        $this->pageRevision = new PageRevision();
     }
 
     /**
      * Fetch all core entity types as an associated array
      * with their basic names as the keys.
+     * @return array<Entity>
      */
     public function all(): array
     {

app/Entities/Managers/TrashCan.php

@@ -1,109 +0,0 @@
-<?php namespace BookStack\Entities\Managers;
-
-use BookStack\Entities\Book;
-use BookStack\Entities\Bookshelf;
-use BookStack\Entities\Chapter;
-use BookStack\Entities\Entity;
-use BookStack\Entities\HasCoverImage;
-use BookStack\Entities\Page;
-use BookStack\Exceptions\NotifyException;
-use BookStack\Facades\Activity;
-use BookStack\Uploads\AttachmentService;
-use BookStack\Uploads\ImageService;
-use Exception;
-use Illuminate\Contracts\Container\BindingResolutionException;
-
-class TrashCan
-{
-
-    /**
-     * Remove a bookshelf from the system.
-     * @throws Exception
-     */
-    public function destroyShelf(Bookshelf $shelf)
-    {
-        $this->destroyCommonRelations($shelf);
-        $shelf->delete();
-    }
-
-    /**
-     * Remove a book from the system.
-     * @throws NotifyException
-     * @throws BindingResolutionException
-     */
-    public function destroyBook(Book $book)
-    {
-        foreach ($book->pages as $page) {
-            $this->destroyPage($page);
-        }
-
-        foreach ($book->chapters as $chapter) {
-            $this->destroyChapter($chapter);
-        }
-
-        $this->destroyCommonRelations($book);
-        $book->delete();
-    }
-
-    /**
-     * Remove a page from the system.
-     * @throws NotifyException
-     */
-    public function destroyPage(Page $page)
-    {
-        // Check if set as custom homepage & remove setting if not used or throw error if active
-        $customHome = setting('app-homepage', '0:');
-        if (intval($page->id) === intval(explode(':', $customHome)[0])) {
-            if (setting('app-homepage-type') === 'page') {
-                throw new NotifyException(trans('errors.page_custom_home_deletion'), $page->getUrl());
-            }
-            setting()->remove('app-homepage');
-        }
-
-        $this->destroyCommonRelations($page);
-
-        // Delete Attached Files
-        $attachmentService = app(AttachmentService::class);
-        foreach ($page->attachments as $attachment) {
-            $attachmentService->deleteFile($attachment);
-        }
-
-        $page->delete();
-    }
-
-    /**
-     * Remove a chapter from the system.
-     * @throws Exception
-     */
-    public function destroyChapter(Chapter $chapter)
-    {
-        if (count($chapter->pages) > 0) {
-            foreach ($chapter->pages as $page) {
-                $page->chapter_id = 0;
-                $page->save();
-            }
-        }
-
-        $this->destroyCommonRelations($chapter);
-        $chapter->delete();
-    }
-
-    /**
-     * Update entity relations to remove or update outstanding connections.
-     */
-    protected function destroyCommonRelations(Entity $entity)
-    {
-        Activity::removeEntity($entity);
-        $entity->views()->delete();
-        $entity->permissions()->delete();
-        $entity->tags()->delete();
-        $entity->comments()->delete();
-        $entity->jointPermissions()->delete();
-        $entity->searchTerms()->delete();
-
-        if ($entity instanceof HasCoverImage && $entity->cover) {
-            $imageService = app()->make(ImageService::class);
-            $imageService->destroy($entity->cover);
-        }
-    }
-}

app/Entities/Models/Book.php

@@ -1,4 +1,4 @@
-<?php namespace BookStack\Entities;
+<?php namespace BookStack\Entities\Models;
 
 use BookStack\Uploads\Image;
 use Exception;
@@ -12,26 +12,20 @@ use Illuminate\Support\Collection;
  * @property string $description
  * @property int $image_id
  * @property Image|null $cover
- * @package BookStack\Entities
  */
 class Book extends Entity implements HasCoverImage
 {
     public $searchFactor = 2;
 
     protected $fillable = ['name', 'description'];
-    protected $hidden = ['restricted', 'pivot', 'image_id'];
+    protected $hidden = ['restricted', 'pivot', 'image_id', 'deleted_at'];
 
     /**
      * Get the url for this book.
-     * @param string|bool $path
-     * @return string
      */
-    public function getUrl($path = false)
+    public function getUrl(string $path = ''): string
     {
-        if ($path !== false) {
-            return url('/books/' . urlencode($this->slug) . '/' . trim($path, '/'));
-        }
-        return url('/books/' . urlencode($this->slug));
+        return url('/books/' . implode('/', [urlencode($this->slug), trim($path, '/')]));
     }
 
     /**
@@ -117,15 +111,4 @@ class Book extends Entity implements HasCoverImage
         $chapters = $this->chapters()->visible()->get();
         return $pages->concat($chapters)->sortBy('priority')->sortByDesc('draft');
     }
-
-    /**
-     * Get an excerpt of this book's description to the specified length or less.
-     * @param int $length
-     * @return string
-     */
-    public function getExcerpt(int $length = 100)
-    {
-        $description = $this->description;
-        return mb_strlen($description) > $length ? mb_substr($description, 0, $length-3) . '...' : $description;
-    }
 }

app/Entities/Models/BookChild.php

@@ -1,4 +1,4 @@
-<?php namespace BookStack\Entities;
+<?php namespace BookStack\Entities\Models;
 
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
@@ -10,7 +10,7 @@ use Illuminate\Database\Eloquent\Relations\BelongsTo;
  * @property Book $book
  * @method Builder whereSlugs(string $bookSlug, string $childSlug)
  */
-class BookChild extends Entity
+abstract class BookChild extends Entity
 {
 
     /**
@@ -28,11 +28,10 @@ class BookChild extends Entity
 
     /**
      * Get the book this page sits in.
-     * @return BelongsTo
      */
     public function book(): BelongsTo
     {
-        return $this->belongsTo(Book::class);
+        return $this->belongsTo(Book::class)->withTrashed();
     }
 
     /**
@@ -45,12 +44,9 @@ class BookChild extends Entity
         $this->save();
         $this->refresh();
 
-        // Update related activity
-        $this->activity()->update(['book_id' => $newBookId]);
-
         // Update all child pages if a chapter
         if ($this instanceof Chapter) {
-            foreach ($this->pages as $page) {
+            foreach ($this->pages()->withTrashed()->get() as $page) {
                 $page->changeBook($newBookId);
             }
         }

app/Entities/Models/Bookshelf.php

@@ -1,4 +1,4 @@
-<?php namespace BookStack\Entities;
+<?php namespace BookStack\Entities\Models;
 
 use BookStack\Uploads\Image;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
@@ -12,7 +12,7 @@ class Bookshelf extends Entity implements HasCoverImage
 
     protected $fillable = ['name', 'description', 'image_id'];
 
-    protected $hidden = ['restricted', 'image_id'];
+    protected $hidden = ['restricted', 'image_id', 'deleted_at'];
 
     /**
      * Get the books in this shelf.
@@ -36,15 +36,10 @@ class Bookshelf extends Entity implements HasCoverImage
 
     /**
      * Get the url for this bookshelf.
-     * @param string|bool $path
-     * @return string
      */
-    public function getUrl($path = false)
+    public function getUrl(string $path = ''): string
     {
-        if ($path !== false) {
-            return url('/shelves/' . urlencode($this->slug) . '/' . trim($path, '/'));
-        }
-        return url('/shelves/' . urlencode($this->slug));
+        return url('/shelves/' . implode('/', [urlencode($this->slug), trim($path, '/')]));
     }
 
     /**
@@ -85,17 +80,6 @@ class Bookshelf extends Entity implements HasCoverImage
         return 'cover_shelf';
     }
 
-    /**
-     * Get an excerpt of this book's description to the specified length or less.
-     * @param int $length
-     * @return string
-     */
-    public function getExcerpt(int $length = 100)
-    {
-        $description = $this->description;
-        return mb_strlen($description) > $length ? mb_substr($description, 0, $length-3) . '...' : $description;
-    }
-
     /**
      * Check if this shelf contains the given book.
      * @param Book $book

app/Entities/Models/Chapter.php

@@ -0,0 +1,52 @@
+<?php namespace BookStack\Entities\Models;
+
+use Illuminate\Support\Collection;
+
+/**
+ * Class Chapter
+ * @property Collection<Page> $pages
+ */
+class Chapter extends BookChild
+{
+    public $searchFactor = 1.3;
+
+    protected $fillable = ['name', 'description', 'priority', 'book_id'];
+    protected $hidden = ['restricted', 'pivot', 'deleted_at'];
+
+    /**
+     * Get the pages that this chapter contains.
+     * @param string $dir
+     * @return mixed
+     */
+    public function pages($dir = 'ASC')
+    {
+        return $this->hasMany(Page::class)->orderBy('priority', $dir);
+    }
+
+    /**
+     * Get the url of this chapter.
+     */
+    public function getUrl($path = ''): string
+    {
+        $parts = [
+            'books',
+            urlencode($this->getAttribute('bookSlug') ?? $this->book->slug),
+            'chapter',
+            urlencode($this->slug),
+            trim($path, '/'),
+        ];
+
+        return url('/' . implode('/', $parts));
+    }
+
+    /**
+     * Get the visible pages in this chapter.
+     */
+    public function getVisiblePages(): Collection
+    {
+        return $this->pages()->visible()
+        ->orderBy('draft', 'desc')
+        ->orderBy('priority', 'asc')
+        ->get();
+    }
+}

app/Entities/Models/Deletion.php

@@ -0,0 +1,48 @@
+<?php namespace BookStack\Entities\Models;
+
+use BookStack\Auth\User;
+use BookStack\Entities\Models\Entity;
+use BookStack\Interfaces\Loggable;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\MorphTo;
+
+class Deletion extends Model implements Loggable
+{
+
+    /**
+     * Get the related deletable record.
+     */
+    public function deletable(): MorphTo
+    {
+        return $this->morphTo('deletable')->withTrashed();
+    }
+
+    /**
+     * The the user that performed the deletion.
+     */
+    public function deleter(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'deleted_by');
+    }
+
+    /**
+     * Create a new deletion record for the provided entity.
+     */
+    public static function createForEntity(Entity $entity): Deletion
+    {
+        $record = (new self())->forceFill([
+            'deleted_by' => user()->id,
+            'deletable_type' => $entity->getMorphClass(),
+            'deletable_id' => $entity->id,
+        ]);
+        $record->save();
+        return $record;
+    }
+
+    public function logDescriptor(): string
+    {
+        $deletable = $this->deletable()->first();
+        return "Deletion ({$this->id}) for {$deletable->getType()} ({$deletable->id}) {$deletable->name}";
+    }
+}

app/Entities/Models/Entity.php

@@ -1,4 +1,4 @@
-<?php namespace BookStack\Entities;
+<?php namespace BookStack\Entities\Models;
 
 use BookStack\Actions\Activity;
 use BookStack\Actions\Comment;
@@ -6,12 +6,18 @@ use BookStack\Actions\Tag;
 use BookStack\Actions\View;
 use BookStack\Auth\Permissions\EntityPermission;
 use BookStack\Auth\Permissions\JointPermission;
+use BookStack\Entities\Tools\SearchIndex;
+use BookStack\Entities\Tools\SlugGenerator;
 use BookStack\Facades\Permissions;
-use BookStack\Ownable;
+use BookStack\Interfaces\Sluggable;
+use BookStack\Model;
+use BookStack\Traits\HasCreatorAndUpdater;
+use BookStack\Traits\HasOwner;
 use Carbon\Carbon;
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Collection;
 use Illuminate\Database\Eloquent\Relations\MorphMany;
+use Illuminate\Database\Eloquent\SoftDeletes;
 
 /**
  * Class Entity
@@ -31,11 +37,12 @@ use Illuminate\Database\Eloquent\Relations\MorphMany;
  * @method static Entity|Builder hasPermission(string $permission)
  * @method static Builder withLastView()
  * @method static Builder withViewCount()
- *
- * @package BookStack\Entities
  */
-class Entity extends Ownable
+abstract class Entity extends Model implements Sluggable
 {
+    use SoftDeletes;
+    use HasCreatorAndUpdater;
+    use HasOwner;
 
     /**
      * @var string - Name of property where the main text content is found
@@ -50,7 +57,7 @@ class Entity extends Ownable
     /**
      * Get the entities that are visible to the current user.
      */
-    public function scopeVisible(Builder $query)
+    public function scopeVisible(Builder $query): Builder
     {
         return $this->scopeHasPermission($query, 'view');
     }
@@ -92,24 +99,18 @@ class Entity extends Ownable
     /**
      * Compares this entity to another given entity.
      * Matches by comparing class and id.
-     * @param $entity
-     * @return bool
      */
-    public function matches($entity)
+    public function matches(Entity $entity): bool
     {
         return [get_class($this), $this->id] === [get_class($entity), $entity->id];
     }
 
     /**
-     * Checks if an entity matches or contains another given entity.
-     * @param Entity $entity
-     * @return bool
+     * Checks if the current entity matches or contains the given.
      */
-    public function matchesOrContains(Entity $entity)
+    public function matchesOrContains(Entity $entity): bool
     {
-        $matches = [get_class($this), $this->id] === [get_class($entity), $entity->id];
-
-        if ($matches) {
+        if ($this->matches($entity)) {
             return true;
         }
 
@@ -126,9 +127,8 @@ class Entity extends Ownable
 
     /**
      * Gets the activity objects for this entity.
-     * @return MorphMany
      */
-    public function activity()
+    public function activity(): MorphMany
     {
         return $this->morphMany(Activity::class, 'entity')
             ->orderBy('created_at', 'desc');
@@ -137,26 +137,23 @@ class Entity extends Ownable
     /**
      * Get View objects for this entity.
      */
-    public function views()
+    public function views(): MorphMany
     {
         return $this->morphMany(View::class, 'viewable');
     }
 
     /**
      * Get the Tag models that have been user assigned to this entity.
-     * @return MorphMany
      */
-    public function tags()
+    public function tags(): MorphMany
     {
         return $this->morphMany(Tag::class, 'entity')->orderBy('order', 'asc');
     }
 
     /**
      * Get the comments for an entity
-     * @param bool $orderByCreated
-     * @return MorphMany
      */
-    public function comments($orderByCreated = true)
+    public function comments(bool $orderByCreated = true): MorphMany
     {
         $query = $this->morphMany(Comment::class, 'entity');
         return $orderByCreated ? $query->orderBy('created_at', 'asc') : $query;
@@ -164,9 +161,8 @@ class Entity extends Ownable
 
     /**
      * Get the related search terms.
-     * @return MorphMany
      */
-    public function searchTerms()
+    public function searchTerms(): MorphMany
     {
         return $this->morphMany(SearchTerm::class, 'entity');
     }
@@ -174,18 +170,15 @@ class Entity extends Ownable
     /**
      * Get this entities restrictions.
      */
-    public function permissions()
+    public function permissions(): MorphMany
     {
         return $this->morphMany(EntityPermission::class, 'restrictable');
     }
 
     /**
      * Check if this entity has a specific restriction set against it.
-     * @param $role_id
-     * @param $action
-     * @return bool
      */
-    public function hasRestriction($role_id, $action)
+    public function hasRestriction(int $role_id, string $action): bool
     {
         return $this->permissions()->where('role_id', '=', $role_id)
             ->where('action', '=', $action)->count() > 0;
@@ -193,13 +186,20 @@ class Entity extends Ownable
 
     /**
      * Get the entity jointPermissions this is connected to.
-     * @return MorphMany
      */
-    public function jointPermissions()
+    public function jointPermissions(): MorphMany
     {
         return $this->morphMany(JointPermission::class, 'entity');
     }
 
+    /**
+     * Get the related delete records for this entity.
+     */
+    public function deletions(): MorphMany
+    {
+        return $this->morphMany(Deletion::class, 'deletable');
+    }
+
     /**
      * Check if this instance or class is a certain type of entity.
      * Examples of $type are 'page', 'book', 'chapter'
@@ -210,28 +210,12 @@ class Entity extends Ownable
     }
 
     /**
-     * Get entity type.
-     * @return mixed
+     * Get the entity type as a simple lowercase word.
      */
-    public static function getType()
+    public static function getType(): string
     {
-        return strtolower(static::getClassName());
-    }
-
-    /**
-     * Get an instance of an entity of the given type.
-     * @param $type
-     * @return Entity
-     */
-    public static function getEntityInstance($type)
-    {
-        $types = ['Page', 'Book', 'Chapter', 'Bookshelf'];
-        $className = str_replace([' ', '-', '_'], '', ucwords($type));
-        if (!in_array($className, $types)) {
-            return null;
-        }
-
-        return app('BookStack\\Entities\\' . $className);
+        $className = array_slice(explode('\\', static::class), -1, 1)[0];
+        return strtolower($className);
     }
 
     /**
@@ -247,35 +231,45 @@ class Entity extends Ownable
 
     /**
      * Get the body text of this entity.
-     * @return mixed
      */
-    public function getText()
+    public function getText(): string
     {
-        return $this->{$this->textField};
+        return $this->{$this->textField} ?? '';
     }
 
     /**
      * Get an excerpt of this entity's descriptive content to the specified length.
-     * @param int $length
-     * @return mixed
      */
-    public function getExcerpt(int $length = 100)
+    public function getExcerpt(int $length = 100): string
     {
         $text = $this->getText();
+
         if (mb_strlen($text) > $length) {
             $text = mb_substr($text, 0, $length-3) . '...';
         }
+
         return trim($text);
     }
 
     /**
      * Get the url of this entity
-     * @param $path
-     * @return string
      */
-    public function getUrl($path = '/')
+    abstract public function getUrl(string $path = '/'): string;
+
+    /**
+     * Get the parent entity if existing.
+     * This is the "static" parent and does not include dynamic
+     * relations such as shelves to books.
+     */
+    public function getParent(): ?Entity
     {
-        return $path;
+        if ($this->isA('page')) {
+            return $this->chapter_id ? $this->chapter()->withTrashed()->first() : $this->book()->withTrashed()->first();
+        }
+        if ($this->isA('chapter')) {
+            return $this->book()->withTrashed()->first();
+        }
+        return null;
     }
 
     /**
@@ -292,17 +286,15 @@ class Entity extends Ownable
      */
     public function indexForSearch()
     {
-        $searchService = app()->make(SearchService::class);
-        $searchService->indexEntity(clone $this);
+        app(SearchIndex::class)->indexEntity(clone $this);
     }
 
     /**
-     * Generate and set a new URL slug for this model.
+     * @inheritdoc
      */
     public function refreshSlug(): string
     {
-        $generator = new SlugGenerator($this);
-        $this->slug = $generator->generate();
+        $this->slug = app(SlugGenerator::class)->generate($this);
         return $this->slug;
     }
 }

app/Entities/Models/HasCoverImage.php

@@ -1,7 +1,7 @@
 <?php
 
 
-namespace BookStack\Entities;
+namespace BookStack\Entities\Models;
 
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 

app/Entities/Models/Page.php

@@ -1,5 +1,6 @@
-<?php namespace BookStack\Entities;
+<?php namespace BookStack\Entities\Models;
 
+use BookStack\Entities\Tools\PageContent;
 use BookStack\Uploads\Attachment;
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Collection;
@@ -27,14 +28,19 @@ class Page extends BookChild
 
     public $textField = 'text';
 
-    protected $hidden = ['html', 'markdown', 'text', 'restricted', 'pivot'];
+    protected $hidden = ['html', 'markdown', 'text', 'restricted', 'pivot', 'deleted_at'];
+
+    protected $casts = [
+        'draft' => 'boolean',
+        'template' => 'boolean',
+    ];
 
     /**
      * Get the entities that are visible to the current user.
      */
-    public function scopeVisible(Builder $query)
+    public function scopeVisible(Builder $query): Builder
     {
-        $query = Permissions::enforceDraftVisiblityOnQuery($query);
+        $query = Permissions::enforceDraftVisibilityOnQuery($query);
         return parent::scopeVisible($query);
     }
 
@@ -49,14 +55,6 @@ class Page extends BookChild
         return $array;
     }
 
-    /**
-     * Get the parent item
-     */
-    public function parent(): Entity
-    {
-        return $this->chapter_id ? $this->chapter : $this->book;
-    }
-
     /**
      * Get the chapter that this page is in, If applicable.
      * @return BelongsTo
@@ -94,22 +92,19 @@ class Page extends BookChild
     }
 
     /**
-     * Get the url for this page.
-     * @param string|bool $path
-     * @return string
+     * Get the url of this page.
      */
-    public function getUrl($path = false)
+    public function getUrl($path = ''): string
     {
-        $bookSlug = $this->getAttribute('bookSlug') ? $this->getAttribute('bookSlug') : $this->book->slug;
-        $midText = $this->draft ? '/draft/' : '/page/';
-        $idComponent = $this->draft ? $this->id : urlencode($this->slug);
+        $parts = [
+            'books',
+            urlencode($this->getAttribute('bookSlug') ?? $this->book->slug),
+            $this->draft ? 'draft' : 'page',
+            $this->draft ? $this->id : urlencode($this->slug),
+            trim($path, '/'),
+        ];
 
-        $url = '/books/' . urlencode($bookSlug) . $midText . $idComponent;
-        if ($path !== false) {
-            $url .= '/' . trim($path, '/');
-        }
-
-        return url($url);
+        return url('/' . implode('/', $parts));
     }
 
     /**
@@ -120,4 +115,15 @@ class Page extends BookChild
     {
         return $this->revisions()->first();
     }
+
+    /**
+     * Get this page for JSON display.
+     */
+    public function forJsonDisplay(): Page
+    {
+        $refreshed = $this->refresh()->unsetRelations()->load(['tags', 'createdBy', 'updatedBy', 'ownedBy']);
+        $refreshed->setHidden(array_diff($refreshed->getHidden(), ['html', 'markdown']));
+        $refreshed->html = (new PageContent($refreshed))->render();
+        return $refreshed;
+    }
 }

app/Entities/Models/PageRevision.php

@@ -1,6 +1,7 @@
-<?php namespace BookStack\Entities;
+<?php namespace BookStack\Entities\Models;
 
 use BookStack\Auth\User;
+use BookStack\Entities\Models\Page;
 use BookStack\Model;
 use Carbon\Carbon;
 

app/Entities/Models/SearchTerm.php

@@ -1,4 +1,4 @@
-<?php namespace BookStack\Entities;
+<?php namespace BookStack\Entities\Models;
 
 use BookStack\Model;
 

app/Entities/Repos/BaseRepo.php

@@ -2,11 +2,13 @@
 
 namespace BookStack\Entities\Repos;
 
+use BookStack\Actions\ActivityType;
 use BookStack\Actions\TagRepo;
-use BookStack\Entities\Book;
-use BookStack\Entities\Entity;
-use BookStack\Entities\HasCoverImage;
+use BookStack\Auth\User;
+use BookStack\Entities\Models\Entity;
+use BookStack\Entities\Models\HasCoverImage;
 use BookStack\Exceptions\ImageUploadException;
+use BookStack\Facades\Activity;
 use BookStack\Uploads\ImageRepo;
 use Illuminate\Http\UploadedFile;
 use Illuminate\Support\Collection;
@@ -18,10 +20,6 @@ class BaseRepo
     protected $imageRepo;
 
 
-    /**
-     * BaseRepo constructor.
-     * @param $tagRepo
-     */
     public function __construct(TagRepo $tagRepo, ImageRepo $imageRepo)
     {
         $this->tagRepo = $tagRepo;
@@ -37,6 +35,7 @@ class BaseRepo
         $entity->forceFill([
             'created_by' => user()->id,
             'updated_by' => user()->id,
+            'owned_by' => user()->id,
         ]);
         $entity->refreshSlug();
         $entity->save();
@@ -91,29 +90,4 @@ class BaseRepo
             $entity->save();
         }
     }
-
-    /**
-     * Update the permissions of an entity.
-     */
-    public function updatePermissions(Entity $entity, bool $restricted, Collection $permissions = null)
-    {
-        $entity->restricted = $restricted;
-        $entity->permissions()->delete();
-
-        if (!is_null($permissions)) {
-            $entityPermissionData = $permissions->flatMap(function ($restrictions, $roleId) {
-                return collect($restrictions)->keys()->map(function ($action) use ($roleId) {
-                    return [
-                        'role_id' => $roleId,
-                        'action' => strtolower($action),
-                    ] ;
-                });
-            });
-
-            $entity->permissions()->createMany($entityPermissionData);
-        }
-
-        $entity->save();
-        $entity->rebuildPermissions();
-    }
 }

app/Entities/Repos/BookRepo.php

@@ -1,14 +1,14 @@
 <?php namespace BookStack\Entities\Repos;
 
+use BookStack\Actions\ActivityType;
 use BookStack\Actions\TagRepo;
-use BookStack\Entities\Book;
-use BookStack\Entities\Managers\TrashCan;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Tools\TrashCan;
 use BookStack\Exceptions\ImageUploadException;
 use BookStack\Exceptions\NotFoundException;
-use BookStack\Exceptions\NotifyException;
+use BookStack\Facades\Activity;
 use BookStack\Uploads\ImageRepo;
 use Exception;
-use Illuminate\Contracts\Container\BindingResolutionException;
 use Illuminate\Contracts\Pagination\LengthAwarePaginator;
 use Illuminate\Http\UploadedFile;
 use Illuminate\Support\Collection;
@@ -22,7 +22,6 @@ class BookRepo
 
     /**
      * BookRepo constructor.
-     * @param $tagRepo
      */
     public function __construct(BaseRepo $baseRepo, TagRepo $tagRepo, ImageRepo $imageRepo)
     {
@@ -36,7 +35,7 @@ class BookRepo
      */
     public function getAllPaginated(int $count = 20, string $sort = 'name', string $order = 'asc'): LengthAwarePaginator
     {
-        return Book::visible()->orderBy($sort, $order)->paginate($count);
+        return Book::visible()->with('cover')->orderBy($sort, $order)->paginate($count);
     }
 
     /**
@@ -91,6 +90,7 @@ class BookRepo
     {
         $book = new Book();
         $this->baseRepo->create($book, $input);
+        Activity::addForEntity($book, ActivityType::BOOK_CREATE);
         return $book;
     }
 
@@ -100,6 +100,7 @@ class BookRepo
     public function update(Book $book, array $input): Book
     {
         $this->baseRepo->update($book, $input);
+        Activity::addForEntity($book, ActivityType::BOOK_UPDATE);
         return $book;
     }
 
@@ -113,22 +114,16 @@ class BookRepo
         $this->baseRepo->updateCoverImage($book, $coverImage, $removeImage);
     }
 
-    /**
-     * Update the permissions of a book.
-     */
-    public function updatePermissions(Book $book, bool $restricted, Collection $permissions = null)
-    {
-        $this->baseRepo->updatePermissions($book, $restricted, $permissions);
-    }
-
     /**
      * Remove a book from the system.
-     * @throws NotifyException
-     * @throws BindingResolutionException
+     * @throws Exception
      */
     public function destroy(Book $book)
     {
         $trashCan = new TrashCan();
-        $trashCan->destroyBook($book);
+        $trashCan->softDestroyBook($book);
+        Activity::addForEntity($book, ActivityType::BOOK_DELETE);
+
+        $trashCan->autoClearOld();
     }
 }

app/Entities/Repos/BookshelfRepo.php

@@ -1,10 +1,12 @@
 <?php namespace BookStack\Entities\Repos;
 
-use BookStack\Entities\Book;
-use BookStack\Entities\Bookshelf;
-use BookStack\Entities\Managers\TrashCan;
+use BookStack\Actions\ActivityType;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Bookshelf;
+use BookStack\Entities\Tools\TrashCan;
 use BookStack\Exceptions\ImageUploadException;
 use BookStack\Exceptions\NotFoundException;
+use BookStack\Facades\Activity;
 use Exception;
 use Illuminate\Contracts\Pagination\LengthAwarePaginator;
 use Illuminate\Http\UploadedFile;
@@ -16,7 +18,6 @@ class BookshelfRepo
 
     /**
      * BookshelfRepo constructor.
-     * @param $baseRepo
      */
     public function __construct(BaseRepo $baseRepo)
     {
@@ -29,7 +30,7 @@ class BookshelfRepo
     public function getAllPaginated(int $count = 20, string $sort = 'name', string $order = 'asc'): LengthAwarePaginator
     {
         return Bookshelf::visible()
-            ->with('visibleBooks')
+            ->with(['visibleBooks', 'cover'])
             ->orderBy($sort, $order)
             ->paginate($count);
     }
@@ -87,11 +88,12 @@ class BookshelfRepo
         $shelf = new Bookshelf();
         $this->baseRepo->create($shelf, $input);
         $this->updateBooks($shelf, $bookIds);
+        Activity::addForEntity($shelf, ActivityType::BOOKSHELF_CREATE);
         return $shelf;
     }
 
     /**
-     * Create a new shelf in the system.
+     * Update an existing shelf in the system using the given input.
      */
     public function update(Bookshelf $shelf, array $input, ?array $bookIds): Bookshelf
     {
@@ -101,6 +103,7 @@ class BookshelfRepo
             $this->updateBooks($shelf, $bookIds);
         }
 
+        Activity::addForEntity($shelf, ActivityType::BOOKSHELF_UPDATE);
         return $shelf;
     }
 
@@ -134,14 +137,6 @@ class BookshelfRepo
         $this->baseRepo->updateCoverImage($shelf, $coverImage, $removeImage);
     }
 
-    /**
-     * Update the permissions of a bookshelf.
-     */
-    public function updatePermissions(Bookshelf $shelf, bool $restricted, Collection $permissions = null)
-    {
-        $this->baseRepo->updatePermissions($shelf, $restricted, $permissions);
-    }
-
     /**
      * Copy down the permissions of the given shelf to all child books.
      */
@@ -174,6 +169,8 @@ class BookshelfRepo
     public function destroy(Bookshelf $shelf)
     {
         $trashCan = new TrashCan();
-        $trashCan->destroyShelf($shelf);
+        $trashCan->softDestroyShelf($shelf);
+        Activity::addForEntity($shelf, ActivityType::BOOKSHELF_DELETE);
+        $trashCan->autoClearOld();
     }
 }

app/Entities/Repos/ChapterRepo.php

@@ -1,15 +1,14 @@
 <?php namespace BookStack\Entities\Repos;
 
-use BookStack\Entities\Book;
-use BookStack\Entities\Chapter;
-use BookStack\Entities\Managers\BookContents;
-use BookStack\Entities\Managers\TrashCan;
+use BookStack\Actions\ActivityType;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Tools\BookContents;
+use BookStack\Entities\Tools\TrashCan;
 use BookStack\Exceptions\MoveOperationException;
 use BookStack\Exceptions\NotFoundException;
-use BookStack\Exceptions\NotifyException;
+use BookStack\Facades\Activity;
 use Exception;
-use Illuminate\Contracts\Container\BindingResolutionException;
-use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Support\Collection;
 
 class ChapterRepo
@@ -19,7 +18,6 @@ class ChapterRepo
 
     /**
      * ChapterRepo constructor.
-     * @param $baseRepo
      */
     public function __construct(BaseRepo $baseRepo)
     {
@@ -50,6 +48,7 @@ class ChapterRepo
         $chapter->book_id = $parentBook->id;
         $chapter->priority = (new BookContents($parentBook))->getLastPriority() + 1;
         $this->baseRepo->create($chapter, $input);
+        Activity::addForEntity($chapter, ActivityType::CHAPTER_CREATE);
         return $chapter;
     }
 
@@ -59,17 +58,10 @@ class ChapterRepo
     public function update(Chapter $chapter, array $input): Chapter
     {
         $this->baseRepo->update($chapter, $input);
+        Activity::addForEntity($chapter, ActivityType::CHAPTER_UPDATE);
         return $chapter;
     }
 
-    /**
-     * Update the permissions of a chapter.
-     */
-    public function updatePermissions(Chapter $chapter, bool $restricted, Collection $permissions = null)
-    {
-        $this->baseRepo->updatePermissions($chapter, $restricted, $permissions);
-    }
-
     /**
      * Remove a chapter from the system.
      * @throws Exception
@@ -77,7 +69,9 @@ class ChapterRepo
     public function destroy(Chapter $chapter)
     {
         $trashCan = new TrashCan();
-        $trashCan->destroyChapter($chapter);
+        $trashCan->softDestroyChapter($chapter);
+        Activity::addForEntity($chapter, ActivityType::CHAPTER_DELETE);
+        $trashCan->autoClearOld();
     }
 
     /**
@@ -96,6 +90,7 @@ class ChapterRepo
             throw new MoveOperationException('Chapters can only be moved into books');
         }
 
+        /** @var Book $parent */
         $parent = Book::visible()->where('id', '=', $entityId)->first();
         if ($parent === null) {
             throw new MoveOperationException('Book to move chapter into not found');
@@ -103,6 +98,8 @@ class ChapterRepo
 
         $chapter->changeBook($parent->id);
         $chapter->rebuildPermissions();
+        Activity::addForEntity($chapter, ActivityType::CHAPTER_MOVE);
+
         return $parent;
     }
 }

app/Entities/Repos/PageRepo.php

@@ -1,17 +1,19 @@
 <?php namespace BookStack\Entities\Repos;
 
-use BookStack\Entities\Book;
-use BookStack\Entities\Chapter;
-use BookStack\Entities\Entity;
-use BookStack\Entities\Managers\BookContents;
-use BookStack\Entities\Managers\PageContent;
-use BookStack\Entities\Managers\TrashCan;
-use BookStack\Entities\Page;
-use BookStack\Entities\PageRevision;
+use BookStack\Actions\ActivityType;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Models\Entity;
+use BookStack\Entities\Tools\BookContents;
+use BookStack\Entities\Tools\PageContent;
+use BookStack\Entities\Tools\TrashCan;
+use BookStack\Entities\Models\Page;
+use BookStack\Entities\Models\PageRevision;
 use BookStack\Exceptions\MoveOperationException;
 use BookStack\Exceptions\NotFoundException;
-use BookStack\Exceptions\NotifyException;
 use BookStack\Exceptions\PermissionsException;
+use BookStack\Facades\Activity;
+use Exception;
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Pagination\LengthAwarePaginator;
 use Illuminate\Support\Collection;
@@ -33,9 +35,9 @@ class PageRepo
      * Get a page by ID.
      * @throws NotFoundException
      */
-    public function getById(int $id): Page
+    public function getById(int $id, array $relations = ['book']): Page
     {
-        $page = Page::visible()->with(['book'])->find($id);
+        $page = Page::visible()->with($relations)->find($id);
 
         if (!$page) {
             throw new NotFoundException(trans('errors.page_not_found'));
@@ -128,6 +130,7 @@ class PageRepo
         $page = (new Page())->forceFill([
             'name' => trans('entities.pages_initial_name'),
             'created_by' => user()->id,
+            'owned_by' => user()->id,
             'updated_by' => user()->id,
             'draft' => true,
         ]);
@@ -150,12 +153,8 @@ class PageRepo
     public function publishDraft(Page $draft, array $input): Page
     {
         $this->baseRepo->update($draft, $input);
-        if (isset($input['template']) && userCan('templates-manage')) {
-            $draft->template = ($input['template'] === 'true');
-        }
+        $this->updateTemplateStatusAndContentFromInput($draft, $input);
 
-        $pageContent = new PageContent($draft);
-        $pageContent->setNewHTML($input['html']);
         $draft->draft = false;
         $draft->revision_count = 1;
         $draft->priority = $this->getNewPriority($draft);
@@ -164,7 +163,10 @@ class PageRepo
 
         $this->savePageRevision($draft, trans('entities.pages_initial_revision'));
         $draft->indexForSearch();
-        return $draft->refresh();
+        $draft->refresh();
+
+        Activity::addForEntity($draft, ActivityType::PAGE_CREATE);
+        return $draft;
     }
 
     /**
@@ -175,47 +177,52 @@ class PageRepo
         // Hold the old details to compare later
         $oldHtml = $page->html;
         $oldName = $page->name;
+        $oldMarkdown = $page->markdown;
 
-        if (isset($input['template']) && userCan('templates-manage')) {
-            $page->template = ($input['template'] === 'true');
-        }
-
-        $pageContent = new PageContent($page);
-        $pageContent->setNewHTML($input['html']);
+        $this->updateTemplateStatusAndContentFromInput($page, $input);
         $this->baseRepo->update($page, $input);
 
         // Update with new details
         $page->revision_count++;
-
-        if (setting('app-editor') !== 'markdown') {
-            $page->markdown = '';
-        }
-
         $page->save();
 
         // Remove all update drafts for this user & page.
         $this->getUserDraftQuery($page)->delete();
 
         // Save a revision after updating
-        $summary = $input['summary'] ?? null;
-        if ($oldHtml !== $input['html'] || $oldName !== $input['name'] || $summary !== null) {
+        $summary = trim($input['summary'] ?? "");
+        $htmlChanged = isset($input['html']) && $input['html'] !== $oldHtml;
+        $nameChanged = isset($input['name']) && $input['name'] !== $oldName;
+        $markdownChanged = isset($input['markdown']) && $input['markdown'] !== $oldMarkdown;
+        if ($htmlChanged || $nameChanged || $markdownChanged || $summary) {
             $this->savePageRevision($page, $summary);
         }
 
+        Activity::addForEntity($page, ActivityType::PAGE_UPDATE);
         return $page;
     }
 
+    protected function updateTemplateStatusAndContentFromInput(Page $page, array $input)
+    {
+        if (isset($input['template']) && userCan('templates-manage')) {
+            $page->template = ($input['template'] === 'true');
+        }
+
+        $pageContent = new PageContent($page);
+        if (!empty($input['markdown'] ?? '')) {
+            $pageContent->setNewMarkdown($input['markdown']);
+        } else {
+            $pageContent->setNewHTML($input['html'] ?? '');
+        }
+    }
+
     /**
      * Saves a page revision into the system.
      */
-    protected function savePageRevision(Page $page, string $summary = null)
+    protected function savePageRevision(Page $page, string $summary = null): PageRevision
     {
         $revision = new PageRevision($page->getAttributes());
 
-        if (setting('app-editor') !== 'markdown') {
-            $revision->markdown = '';
-        }
-
         $revision->page_id = $page->id;
         $revision->slug = $page->slug;
         $revision->book_slug = $page->book->slug;
@@ -237,11 +244,10 @@ class PageRepo
     {
         // If the page itself is a draft simply update that
         if ($page->draft) {
-            $page->fill($input);
             if (isset($input['html'])) {
-                $content = new PageContent($page);
-                $content->setNewHTML($input['html']);
+                (new PageContent($page))->setNewHTML($input['html']);
             }
+            $page->fill($input);
             $page->save();
             return $page;
         }
@@ -259,12 +265,14 @@ class PageRepo
 
     /**
      * Destroy a page from the system.
-     * @throws NotifyException
+     * @throws Exception
      */
     public function destroy(Page $page)
     {
         $trashCan = new TrashCan();
-        $trashCan->destroyPage($page);
+        $trashCan->softDestroyPage($page);
+        Activity::addForEntity($page, ActivityType::PAGE_DELETE);
+        $trashCan->autoClearOld();
     }
 
     /**
@@ -273,17 +281,26 @@ class PageRepo
     public function restoreRevision(Page $page, int $revisionId): Page
     {
         $page->revision_count++;
-        $this->savePageRevision($page);
-
         $revision = $page->revisions()->where('id', '=', $revisionId)->first();
+
         $page->fill($revision->toArray());
         $content = new PageContent($page);
-        $content->setNewHTML($revision->html);
+
+        if (!empty($revision->markdown)) {
+            $content->setNewMarkdown($revision->markdown);
+        } else {
+            $content->setNewHTML($revision->html);
+        }
+        
         $page->updated_by = user()->id;
         $page->refreshSlug();
         $page->save();
-
         $page->indexForSearch();
+
+        $summary = trans('entities.pages_revision_restored_from', ['id' => strval($revisionId), 'summary' => $revision->summary]);
+        $this->savePageRevision($page, $summary);
+
+        Activity::addForEntity($page, ActivityType::PAGE_RESTORE);
         return $page;
     }
 
@@ -294,7 +311,7 @@ class PageRepo
      * @throws MoveOperationException
      * @throws PermissionsException
      */
-    public function move(Page $page, string $parentIdentifier): Book
+    public function move(Page $page, string $parentIdentifier): Entity
     {
         $parent = $this->findParentByIdentifier($parentIdentifier);
         if ($parent === null) {
@@ -309,7 +326,8 @@ class PageRepo
         $page->changeBook($parent instanceof Book ? $parent->id : $parent->book->id);
         $page->rebuildPermissions();
 
-        return ($parent instanceof Book ? $parent : $parent->book);
+        Activity::addForEntity($page, ActivityType::PAGE_MOVE);
+        return $parent;
     }
 
     /**
@@ -320,7 +338,7 @@ class PageRepo
      */
     public function copy(Page $page, string $parentIdentifier = null, string $newName = null): Page
     {
-        $parent = $parentIdentifier ? $this->findParentByIdentifier($parentIdentifier) : $page->parent();
+        $parent = $parentIdentifier ? $this->findParentByIdentifier($parentIdentifier) : $page->getParent();
         if ($parent === null) {
             throw new MoveOperationException('Book or chapter to move page into not found');
         }
@@ -368,14 +386,6 @@ class PageRepo
         return $parentClass::visible()->where('id', '=', $entityId)->first();
     }
 
-    /**
-     * Update the permissions of a page.
-     */
-    public function updatePermissions(Page $page, bool $restricted, Collection $permissions = null)
-    {
-        $this->baseRepo->updatePermissions($page, $restricted, $permissions);
-    }
-
     /**
      * Change the page's parent to the given entity.
      */
@@ -439,8 +449,9 @@ class PageRepo
      */
     protected function getNewPriority(Page $page): int
     {
-        if ($page->parent() instanceof Chapter) {
-            $lastPage = $page->parent()->pages('desc')->first();
+        $parent = $page->getParent();
+        if ($parent instanceof Chapter) {
+            $lastPage = $parent->pages('desc')->first();
             return $lastPage ? $lastPage->priority + 1 : 0;
         }
 

app/Entities/SlugGenerator.php

@@ -1,62 +0,0 @@
-<?php namespace BookStack\Entities;
-
-use Illuminate\Support\Str;
-
-class SlugGenerator
-{
-
-    protected $entity;
-
-    /**
-     * SlugGenerator constructor.
-     * @param $entity
-     */
-    public function __construct(Entity $entity)
-    {
-        $this->entity = $entity;
-    }
-
-    /**
-     * Generate a fresh slug for the given entity.
-     * The slug will generated so it does not conflict within the same parent item.
-     */
-    public function generate(): string
-    {
-        $slug = $this->formatNameAsSlug($this->entity->name);
-        while ($this->slugInUse($slug)) {
-            $slug .= '-' . substr(md5(rand(1, 500)), 0, 3);
-        }
-        return $slug;
-    }
-
-    /**
-     * Format a name as a url slug.
-     */
-    protected function formatNameAsSlug(string $name): string
-    {
-        $slug = Str::slug($name);
-        if ($slug === "") {
-            $slug = substr(md5(rand(1, 500)), 0, 5);
-        }
-        return $slug;
-    }
-
-    /**
-     * Check if a slug is already in-use for this
-     * type of model within the same parent.
-     */
-    protected function slugInUse(string $slug): bool
-    {
-        $query = $this->entity->newQuery()->where('slug', '=', $slug);
-
-        if ($this->entity instanceof BookChild) {
-            $query->where('book_id', '=', $this->entity->book_id);
-        }
-
-        if ($this->entity->id) {
-            $query->where('id', '!=', $this->entity->id);
-        }
-
-        return $query->count() > 0;
-    }
-}

app/Entities/Tools/BookContents.php

@@ -1,10 +1,10 @@
-<?php namespace BookStack\Entities\Managers;
+<?php namespace BookStack\Entities\Tools;
 
-use BookStack\Entities\Book;
-use BookStack\Entities\BookChild;
-use BookStack\Entities\Chapter;
-use BookStack\Entities\Entity;
-use BookStack\Entities\Page;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\BookChild;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Models\Entity;
+use BookStack\Entities\Models\Page;
 use BookStack\Exceptions\SortOperationException;
 use Illuminate\Support\Collection;
 
@@ -18,7 +18,6 @@ class BookContents
 
     /**
      * BookContents constructor.
-     * @param $book
      */
     public function __construct(Book $book)
     {

app/Entities/Tools/ExportFormatter.php

@@ -1,14 +1,15 @@
-<?php namespace BookStack\Entities;
+<?php namespace BookStack\Entities\Tools;
 
-use BookStack\Entities\Managers\BookContents;
-use BookStack\Entities\Managers\PageContent;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Models\Page;
 use BookStack\Uploads\ImageService;
 use DomPDF;
 use Exception;
 use SnappyPDF;
 use Throwable;
 
-class ExportService
+class ExportFormatter
 {
 
     protected $imageService;
@@ -142,7 +143,7 @@ class ExportService
     protected function containHtml(string $htmlContent): string
     {
         $imageTagsOutput = [];
-        preg_match_all("/\<img.*src\=(\'|\")(.*?)(\'|\").*?\>/i", $htmlContent, $imageTagsOutput);
+        preg_match_all("/\<img.*?src\=(\'|\")(.*?)(\'|\").*?\>/i", $htmlContent, $imageTagsOutput);
 
         // Replace image src with base64 encoded image strings
         if (isset($imageTagsOutput[0]) && count($imageTagsOutput[0]) > 0) {

app/Entities/Tools/Markdown/CustomStrikeThroughExtension.php

@@ -0,0 +1,16 @@
+<?php namespace BookStack\Entities\Tools\Markdown;
+
+use League\CommonMark\ConfigurableEnvironmentInterface;
+use League\CommonMark\Extension\ExtensionInterface;
+use League\CommonMark\Extension\Strikethrough\Strikethrough;
+use League\CommonMark\Extension\Strikethrough\StrikethroughDelimiterProcessor;
+
+class CustomStrikeThroughExtension implements ExtensionInterface
+{
+
+    public function register(ConfigurableEnvironmentInterface $environment)
+    {
+        $environment->addDelimiterProcessor(new StrikethroughDelimiterProcessor());
+        $environment->addInlineRenderer(Strikethrough::class, new CustomStrikethroughRenderer());
+    }
+}

app/Entities/Tools/Markdown/CustomStrikethroughRenderer.php

@@ -0,0 +1,24 @@
+<?php namespace BookStack\Entities\Tools\Markdown;
+
+use League\CommonMark\ElementRendererInterface;
+use League\CommonMark\Extension\Strikethrough\Strikethrough;
+use League\CommonMark\HtmlElement;
+use League\CommonMark\Inline\Element\AbstractInline;
+use League\CommonMark\Inline\Renderer\InlineRendererInterface;
+
+/**
+ * This is a somewhat clone of the League\CommonMark\Extension\Strikethrough\StrikethroughRender
+ * class but modified slightly to use <s> HTML tags instead of <del> in order to
+ * match front-end markdown-it rendering.
+ */
+class CustomStrikethroughRenderer implements InlineRendererInterface
+{
+    public function render(AbstractInline $inline, ElementRendererInterface $htmlRenderer)
+    {
+        if (!($inline instanceof Strikethrough)) {
+            throw new \InvalidArgumentException('Incompatible inline type: ' . get_class($inline));
+        }
+
+        return new HtmlElement('s', $inline->getData('attributes', []), $htmlRenderer->renderInlines($inline->children()));
+    }
+}

app/Entities/Tools/PageContent.php

@@ -1,9 +1,17 @@
-<?php namespace BookStack\Entities\Managers;
+<?php namespace BookStack\Entities\Tools;
 
-use BookStack\Entities\Page;
+use BookStack\Entities\Models\Page;
+use BookStack\Entities\Tools\Markdown\CustomStrikeThroughExtension;
+use BookStack\Facades\Theme;
+use BookStack\Theming\ThemeEvents;
+use BookStack\Util\HtmlContentFilter;
 use DOMDocument;
 use DOMNodeList;
 use DOMXPath;
+use League\CommonMark\CommonMarkConverter;
+use League\CommonMark\Environment;
+use League\CommonMark\Extension\Table\TableExtension;
+use League\CommonMark\Extension\TaskList\TaskListExtension;
 
 class PageContent
 {
@@ -25,6 +33,32 @@ class PageContent
     {
         $this->page->html = $this->formatHtml($html);
         $this->page->text = $this->toPlainText();
+        $this->page->markdown = '';
+    }
+
+    /**
+     * Update the content of the page with new provided Markdown content.
+     */
+    public function setNewMarkdown(string $markdown)
+    {
+        $this->page->markdown = $markdown;
+        $html = $this->markdownToHtml($markdown);
+        $this->page->html = $this->formatHtml($html);
+        $this->page->text = $this->toPlainText();
+    }
+
+    /**
+     * Convert the given Markdown content to a HTML string.
+     */
+    protected function markdownToHtml(string $markdown): string
+    {
+        $environment = Environment::createCommonMarkEnvironment();
+        $environment->addExtension(new TableExtension());
+        $environment->addExtension(new TaskListExtension());
+        $environment->addExtension(new CustomStrikeThroughExtension());
+        $environment = Theme::dispatch(ThemeEvents::COMMONMARK_ENVIRONMENT_CONFIGURE, $environment) ?? $environment;
+        $converter = new CommonMarkConverter([], $environment);
+        return $converter->convertToHtml($markdown);
     }
 
     /**
@@ -136,7 +170,7 @@ class PageContent
         $content = $this->page->html;
 
         if (!config('app.allow_content_scripts')) {
-            $content = $this->escapeScripts($content);
+            $content = HtmlContentFilter::removeScripts($content);
         }
 
         if ($blankIncludes) {
@@ -275,65 +309,4 @@ class PageContent
 
         return $innerContent;
     }
-
-    /**
-     * Escape script tags within HTML content.
-     */
-    protected function escapeScripts(string $html) : string
-    {
-        if (empty($html)) {
-            return $html;
-        }
-
-        libxml_use_internal_errors(true);
-        $doc = new DOMDocument();
-        $doc->loadHTML(mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8'));
-        $xPath = new DOMXPath($doc);
-
-        // Remove standard script tags
-        $scriptElems = $xPath->query('//script');
-        foreach ($scriptElems as $scriptElem) {
-            $scriptElem->parentNode->removeChild($scriptElem);
-        }
-
-        // Remove clickable links to JavaScript URI
-        $badLinks = $xPath->query('//*[contains(@href, \'javascript:\')]');
-        foreach ($badLinks as $badLink) {
-            $badLink->parentNode->removeChild($badLink);
-        }
-
-        // Remove forms with calls to JavaScript URI
-        $badForms = $xPath->query('//*[contains(@action, \'javascript:\')] | //*[contains(@formaction, \'javascript:\')]');
-        foreach ($badForms as $badForm) {
-            $badForm->parentNode->removeChild($badForm);
-        }
-
-        // Remove meta tag to prevent external redirects
-        $metaTags = $xPath->query('//meta[contains(@content, \'url\')]');
-        foreach ($metaTags as $metaTag) {
-            $metaTag->parentNode->removeChild($metaTag);
-        }
-
-        // Remove data or JavaScript iFrames
-        $badIframes = $xPath->query('//*[contains(@src, \'data:\')] | //*[contains(@src, \'javascript:\')] | //*[@srcdoc]');
-        foreach ($badIframes as $badIframe) {
-            $badIframe->parentNode->removeChild($badIframe);
-        }
-
-        // Remove 'on*' attributes
-        $onAttributes = $xPath->query('//@*[starts-with(name(), \'on\')]');
-        foreach ($onAttributes as $attr) {
-            /** @var \DOMAttr $attr*/
-            $attrName = $attr->nodeName;
-            $attr->parentNode->removeAttribute($attrName);
-        }
-
-        $html = '';
-        $topElems = $doc->documentElement->childNodes->item(0)->childNodes;
-        foreach ($topElems as $child) {
-            $html .= $doc->saveHTML($child);
-        }
-
-        return $html;
-    }
 }

app/Entities/Tools/PageEditActivity.php

@@ -1,7 +1,7 @@
-<?php namespace BookStack\Entities\Managers;
+<?php namespace BookStack\Entities\Tools;
 
-use BookStack\Entities\Page;
-use BookStack\Entities\PageRevision;
+use BookStack\Entities\Models\Page;
+use BookStack\Entities\Models\PageRevision;
 use Carbon\Carbon;
 use Illuminate\Database\Eloquent\Builder;
 

app/Entities/Tools/PermissionsUpdater.php

@@ -0,0 +1,68 @@
+<?php namespace BookStack\Entities\Tools;
+
+use BookStack\Actions\ActivityType;
+use BookStack\Auth\User;
+use BookStack\Entities\Models\Entity;
+use BookStack\Facades\Activity;
+use Illuminate\Http\Request;
+use Illuminate\Support\Collection;
+
+class PermissionsUpdater
+{
+
+    /**
+     * Update an entities permissions from a permission form submit request.
+     */
+    public function updateFromPermissionsForm(Entity $entity, Request $request)
+    {
+        $restricted = $request->get('restricted') === 'true';
+        $permissions = $request->get('restrictions', null);
+        $ownerId = $request->get('owned_by', null);
+
+        $entity->restricted = $restricted;
+        $entity->permissions()->delete();
+
+        if (!is_null($permissions)) {
+            $entityPermissionData = $this->formatPermissionsFromRequestToEntityPermissions($permissions);
+            $entity->permissions()->createMany($entityPermissionData);
+        }
+
+        if (!is_null($ownerId)) {
+            $this->updateOwnerFromId($entity, intval($ownerId));
+        }
+
+        $entity->save();
+        $entity->rebuildPermissions();
+
+        Activity::addForEntity($entity, ActivityType::PERMISSIONS_UPDATE);
+    }
+
+    /**
+     * Update the owner of the given entity.
+     * Checks the user exists in the system first.
+     * Does not save the model, just updates it.
+     */
+    protected function updateOwnerFromId(Entity $entity, int $newOwnerId)
+    {
+        $newOwner = User::query()->find($newOwnerId);
+        if (!is_null($newOwner)) {
+            $entity->owned_by = $newOwner->id;
+        }
+    }
+
+    /**
+     * Format permissions provided from a permission form to be
+     * EntityPermission data.
+     */
+    protected function formatPermissionsFromRequestToEntityPermissions(array $permissions): Collection
+    {
+        return collect($permissions)->flatMap(function ($restrictions, $roleId) {
+            return collect($restrictions)->keys()->map(function ($action) use ($roleId) {
+                return [
+                    'role_id' => $roleId,
+                    'action' => strtolower($action),
+                ] ;
+            });
+        });
+    }
+}

app/Entities/Tools/SearchIndex.php

@@ -0,0 +1,120 @@
+<?php namespace BookStack\Entities\Tools;
+
+use BookStack\Entities\EntityProvider;
+use BookStack\Entities\Models\Entity;
+use BookStack\Entities\Models\SearchTerm;
+use Illuminate\Support\Collection;
+
+class SearchIndex
+{
+    /**
+     * @var SearchTerm
+     */
+    protected $searchTerm;
+
+    /**
+     * @var EntityProvider
+     */
+    protected $entityProvider;
+
+
+    public function __construct(SearchTerm $searchTerm, EntityProvider $entityProvider)
+    {
+        $this->searchTerm = $searchTerm;
+        $this->entityProvider = $entityProvider;
+    }
+
+
+    /**
+     * Index the given entity.
+     */
+    public function indexEntity(Entity $entity)
+    {
+        $this->deleteEntityTerms($entity);
+        $nameTerms = $this->generateTermArrayFromText($entity->name, 5 * $entity->searchFactor);
+        $bodyTerms = $this->generateTermArrayFromText($entity->getText(), 1 * $entity->searchFactor);
+        $terms = array_merge($nameTerms, $bodyTerms);
+        foreach ($terms as $index => $term) {
+            $terms[$index]['entity_type'] = $entity->getMorphClass();
+            $terms[$index]['entity_id'] = $entity->id;
+        }
+        $this->searchTerm->newQuery()->insert($terms);
+    }
+
+    /**
+     * Index multiple Entities at once
+     * @param Entity[] $entities
+     */
+    protected function indexEntities(array $entities)
+    {
+        $terms = [];
+        foreach ($entities as $entity) {
+            $nameTerms = $this->generateTermArrayFromText($entity->name, 5 * $entity->searchFactor);
+            $bodyTerms = $this->generateTermArrayFromText($entity->getText(), 1 * $entity->searchFactor);
+            foreach (array_merge($nameTerms, $bodyTerms) as $term) {
+                $term['entity_id'] = $entity->id;
+                $term['entity_type'] = $entity->getMorphClass();
+                $terms[] = $term;
+            }
+        }
+
+        $chunkedTerms = array_chunk($terms, 500);
+        foreach ($chunkedTerms as $termChunk) {
+            $this->searchTerm->newQuery()->insert($termChunk);
+        }
+    }
+
+    /**
+     * Delete and re-index the terms for all entities in the system.
+     */
+    public function indexAllEntities()
+    {
+        $this->searchTerm->newQuery()->truncate();
+
+        foreach ($this->entityProvider->all() as $entityModel) {
+            $selectFields = ['id', 'name', $entityModel->textField];
+            $entityModel->newQuery()
+                ->withTrashed()
+                ->select($selectFields)
+                ->chunk(1000, function (Collection $entities) {
+                    $this->indexEntities($entities->all());
+                });
+        }
+    }
+
+    /**
+     * Delete related Entity search terms.
+     */
+    public function deleteEntityTerms(Entity $entity)
+    {
+        $entity->searchTerms()->delete();
+    }
+
+    /**
+     * Create a scored term array from the given text.
+     */
+    protected function generateTermArrayFromText(string $text, int $scoreAdjustment = 1): array
+    {
+        $tokenMap = []; // {TextToken => OccurrenceCount}
+        $splitChars = " \n\t.,!?:;()[]{}<>`'\"";
+        $token = strtok($text, $splitChars);
+
+        while ($token !== false) {
+            if (!isset($tokenMap[$token])) {
+                $tokenMap[$token] = 0;
+            }
+            $tokenMap[$token]++;
+            $token = strtok($splitChars);
+        }
+
+        $terms = [];
+        foreach ($tokenMap as $token => $count) {
+            $terms[] = [
+                'term' => $token,
+                'score' => $count * $scoreAdjustment
+            ];
+        }
+
+        return $terms;
+    }
+}

app/Entities/Tools/SearchOptions.php

@@ -1,4 +1,4 @@
-<?php namespace BookStack\Entities;
+<?php namespace BookStack\Entities\Tools;
 
 use Illuminate\Http\Request;
 
@@ -137,5 +137,4 @@ class SearchOptions
 
         return $string;
     }
-
-}
+}

app/Entities/Tools/SearchRunner.php

@@ -1,6 +1,9 @@
-<?php namespace BookStack\Entities;
+<?php namespace BookStack\Entities\Tools;
 
 use BookStack\Auth\Permissions\PermissionService;
+use BookStack\Auth\User;
+use BookStack\Entities\EntityProvider;
+use BookStack\Entities\Models\Entity;
 use Illuminate\Database\Connection;
 use Illuminate\Database\Eloquent\Builder as EloquentBuilder;
 use Illuminate\Database\Query\Builder;
@@ -8,12 +11,8 @@ use Illuminate\Database\Query\JoinClause;
 use Illuminate\Support\Collection;
 use Illuminate\Support\Str;
 
-class SearchService
+class SearchRunner
 {
-    /**
-     * @var SearchTerm
-     */
-    protected $searchTerm;
 
     /**
      * @var EntityProvider
@@ -37,25 +36,14 @@ class SearchService
      */
     protected $queryOperators = ['<=', '>=', '=', '<', '>', 'like', '!='];
 
-    /**
-     * SearchService constructor.
-     */
-    public function __construct(SearchTerm $searchTerm, EntityProvider $entityProvider, Connection $db, PermissionService $permissionService)
+
+    public function __construct(EntityProvider $entityProvider, Connection $db, PermissionService $permissionService)
     {
-        $this->searchTerm = $searchTerm;
         $this->entityProvider = $entityProvider;
         $this->db = $db;
         $this->permissionService = $permissionService;
     }
 
-    /**
-     * Set the database connection
-     */
-    public function setConnection(Connection $connection)
-    {
-        $this->db = $connection;
-    }
-
     /**
      * Search all entities in the system.
      * The provided count is for each entity to search,
@@ -115,11 +103,12 @@ class SearchService
             $search = $this->buildEntitySearchQuery($opts, $entityType)->where('book_id', '=', $bookId)->take(20)->get();
             $results = $results->merge($search);
         }
+
         return $results->sortByDesc('score')->take(20);
     }
 
     /**
-     * Search a book for entities
+     * Search a chapter for entities
      */
     public function searchChapter(int $chapterId, string $searchString): Collection
     {
@@ -134,7 +123,7 @@ class SearchService
      * matching instead of the items themselves.
      * @return \Illuminate\Database\Eloquent\Collection|int|static[]
      */
-    public function searchEntityTable(SearchOptions $searchOpts, string $entityType = 'page', int $page = 1, int $count = 20, string $action = 'view', bool $getCount = false)
+    protected function searchEntityTable(SearchOptions $searchOpts, string $entityType = 'page', int $page = 1, int $count = 20, string $action = 'view', bool $getCount = false)
     {
         $query = $this->buildEntitySearchQuery($searchOpts, $entityType, $action);
         if ($getCount) {
@@ -155,28 +144,25 @@ class SearchService
 
         // Handle normal search terms
         if (count($searchOpts->searches) > 0) {
-            $subQuery = $this->db->table('search_terms')->select('entity_id', 'entity_type', \DB::raw('SUM(score) as score'));
+            $rawScoreSum = $this->db->raw('SUM(score) as score');
+            $subQuery = $this->db->table('search_terms')->select('entity_id', 'entity_type', $rawScoreSum);
             $subQuery->where('entity_type', '=', $entity->getMorphClass());
             $subQuery->where(function (Builder $query) use ($searchOpts) {
                 foreach ($searchOpts->searches as $inputTerm) {
                     $query->orWhere('term', 'like', $inputTerm .'%');
                 }
             })->groupBy('entity_type', 'entity_id');
-            $entitySelect->join(\DB::raw('(' . $subQuery->toSql() . ') as s'), function (JoinClause $join) {
+            $entitySelect->join($this->db->raw('(' . $subQuery->toSql() . ') as s'), function (JoinClause $join) {
                 $join->on('id', '=', 'entity_id');
             })->selectRaw($entity->getTable().'.*, s.score')->orderBy('score', 'desc');
             $entitySelect->mergeBindings($subQuery);
         }
 
         // Handle exact term matching
-        if (count($searchOpts->exacts) > 0) {
-            $entitySelect->where(function (EloquentBuilder $query) use ($searchOpts, $entity) {
-                foreach ($searchOpts->exacts as $inputTerm) {
-                    $query->where(function (EloquentBuilder $query) use ($inputTerm, $entity) {
-                        $query->where('name', 'like', '%'.$inputTerm .'%')
-                            ->orWhere($entity->textField, 'like', '%'.$inputTerm .'%');
-                    });
-                }
+        foreach ($searchOpts->exacts as $inputTerm) {
+            $entitySelect->where(function (EloquentBuilder $query) use ($inputTerm, $entity) {
+                $query->where('name', 'like', '%'.$inputTerm .'%')
+                    ->orWhere($entity->textField, 'like', '%'.$inputTerm .'%');
             });
         }
 
@@ -193,7 +179,7 @@ class SearchService
             }
         }
 
-        return $this->permissionService->enforceEntityRestrictions($entityType, $entitySelect, $action);
+        return $this->permissionService->enforceEntityRestrictions($entity, $entitySelect, $action);
     }
 
     /**
@@ -239,102 +225,6 @@ class SearchService
         return $query;
     }
 
-    /**
-     * Index the given entity.
-     */
-    public function indexEntity(Entity $entity)
-    {
-        $this->deleteEntityTerms($entity);
-        $nameTerms = $this->generateTermArrayFromText($entity->name, 5 * $entity->searchFactor);
-        $bodyTerms = $this->generateTermArrayFromText($entity->getText(), 1 * $entity->searchFactor);
-        $terms = array_merge($nameTerms, $bodyTerms);
-        foreach ($terms as $index => $term) {
-            $terms[$index]['entity_type'] = $entity->getMorphClass();
-            $terms[$index]['entity_id'] = $entity->id;
-        }
-        $this->searchTerm->newQuery()->insert($terms);
-    }
-
-    /**
-     * Index multiple Entities at once
-     * @param \BookStack\Entities\Entity[] $entities
-     */
-    protected function indexEntities($entities)
-    {
-        $terms = [];
-        foreach ($entities as $entity) {
-            $nameTerms = $this->generateTermArrayFromText($entity->name, 5 * $entity->searchFactor);
-            $bodyTerms = $this->generateTermArrayFromText($entity->getText(), 1 * $entity->searchFactor);
-            foreach (array_merge($nameTerms, $bodyTerms) as $term) {
-                $term['entity_id'] = $entity->id;
-                $term['entity_type'] = $entity->getMorphClass();
-                $terms[] = $term;
-            }
-        }
-
-        $chunkedTerms = array_chunk($terms, 500);
-        foreach ($chunkedTerms as $termChunk) {
-            $this->searchTerm->newQuery()->insert($termChunk);
-        }
-    }
-
-    /**
-     * Delete and re-index the terms for all entities in the system.
-     */
-    public function indexAllEntities()
-    {
-        $this->searchTerm->truncate();
-
-        foreach ($this->entityProvider->all() as $entityModel) {
-            $selectFields = ['id', 'name', $entityModel->textField];
-            $entityModel->newQuery()->select($selectFields)->chunk(1000, function ($entities) {
-                $this->indexEntities($entities);
-            });
-        }
-    }
-
-    /**
-     * Delete related Entity search terms.
-     * @param Entity $entity
-     */
-    public function deleteEntityTerms(Entity $entity)
-    {
-        $entity->searchTerms()->delete();
-    }
-
-    /**
-     * Create a scored term array from the given text.
-     * @param $text
-     * @param float|int $scoreAdjustment
-     * @return array
-     */
-    protected function generateTermArrayFromText($text, $scoreAdjustment = 1)
-    {
-        $tokenMap = []; // {TextToken => OccurrenceCount}
-        $splitChars = " \n\t.,!?:;()[]{}<>`'\"";
-        $token = strtok($text, $splitChars);
-
-        while ($token !== false) {
-            if (!isset($tokenMap[$token])) {
-                $tokenMap[$token] = 0;
-            }
-            $tokenMap[$token]++;
-            $token = strtok($splitChars);
-        }
-
-        $terms = [];
-        foreach ($tokenMap as $token => $count) {
-            $terms[] = [
-                'term' => $token,
-                'score' => $count * $scoreAdjustment
-            ];
-        }
-        return $terms;
-    }
-
-
-
-
     /**
      * Custom entity search filters
      */
@@ -381,24 +271,29 @@ class SearchService
 
     protected function filterCreatedBy(EloquentBuilder $query, Entity $model, $input)
     {
-        if (!is_numeric($input) && $input !== 'me') {
-            return;
+        $userSlug = $input === 'me' ? user()->slug : trim($input);
+        $user = User::query()->where('slug', '=', $userSlug)->first(['id']);
+        if ($user) {
+            $query->where('created_by', '=', $user->id);
         }
-        if ($input === 'me') {
-            $input = user()->id;
-        }
-        $query->where('created_by', '=', $input);
     }
 
     protected function filterUpdatedBy(EloquentBuilder $query, Entity $model, $input)
     {
-        if (!is_numeric($input) && $input !== 'me') {
-            return;
+        $userSlug = $input === 'me' ? user()->slug : trim($input);
+        $user = User::query()->where('slug', '=', $userSlug)->first(['id']);
+        if ($user) {
+            $query->where('updated_by', '=', $user->id);
         }
-        if ($input === 'me') {
-            $input = user()->id;
+    }
+
+    protected function filterOwnedBy(EloquentBuilder $query, Entity $model, $input)
+    {
+        $userSlug = $input === 'me' ? user()->slug : trim($input);
+        $user = User::query()->where('slug', '=', $userSlug)->first(['id']);
+        if ($user) {
+            $query->where('owned_by', '=', $user->id);
         }
-        $query->where('updated_by', '=', $input);
     }
 
     protected function filterInName(EloquentBuilder $query, Entity $model, $input)

app/Entities/Tools/ShelfContext.php

@@ -1,29 +1,18 @@
-<?php namespace BookStack\Entities\Managers;
+<?php namespace BookStack\Entities\Tools;
 
-use BookStack\Entities\Book;
-use BookStack\Entities\Bookshelf;
-use Illuminate\Session\Store;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Bookshelf;
 
-class EntityContext
+class ShelfContext
 {
-    protected $session;
-
     protected $KEY_SHELF_CONTEXT_ID = 'context_bookshelf_id';
 
-    /**
-     * EntityContextManager constructor.
-     */
-    public function __construct(Store $session)
-    {
-        $this->session = $session;
-    }
-
     /**
      * Get the current bookshelf context for the given book.
      */
     public function getContextualShelfForBook(Book $book): ?Bookshelf
     {
-        $contextBookshelfId = $this->session->get($this->KEY_SHELF_CONTEXT_ID, null);
+        $contextBookshelfId = session()->get($this->KEY_SHELF_CONTEXT_ID, null);
 
         if (!is_int($contextBookshelfId)) {
             return null;
@@ -37,11 +26,10 @@ class EntityContext
 
     /**
      * Store the current contextual shelf ID.
-     * @param int $shelfId
      */
     public function setShelfContext(int $shelfId)
     {
-        $this->session->put($this->KEY_SHELF_CONTEXT_ID, $shelfId);
+        session()->put($this->KEY_SHELF_CONTEXT_ID, $shelfId);
     }
 
     /**
@@ -49,6 +37,6 @@ class EntityContext
      */
     public function clearShelfContext()
     {
-        $this->session->forget($this->KEY_SHELF_CONTEXT_ID);
+        session()->forget($this->KEY_SHELF_CONTEXT_ID);
     }
 }

app/Entities/Tools/SiblingFetcher.php

@@ -0,0 +1,47 @@
+<?php namespace BookStack\Entities\Tools;
+
+use BookStack\Entities\EntityProvider;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Bookshelf;
+use Illuminate\Support\Collection;
+
+class SiblingFetcher
+{
+
+    /**
+     * Search among the siblings of the entity of given type and id.
+     */
+    public function fetch(string $entityType, int $entityId): Collection
+    {
+        $entity = (new EntityProvider)->get($entityType)->visible()->findOrFail($entityId);
+        $entities = [];
+
+        // Page in chapter
+        if ($entity->isA('page') && $entity->chapter) {
+            $entities = $entity->chapter->getVisiblePages();
+        }
+
+        // Page in book or chapter
+        if (($entity->isA('page') && !$entity->chapter) || $entity->isA('chapter')) {
+            $entities = $entity->book->getDirectChildren();
+        }
+
+        // Book
+        // Gets just the books in a shelf if shelf is in context
+        if ($entity->isA('book')) {
+            $contextShelf = (new ShelfContext)->getContextualShelfForBook($entity);
+            if ($contextShelf) {
+                $entities = $contextShelf->visibleBooks()->get();
+            } else {
+                $entities = Book::visible()->get();
+            }
+        }
+
+        // Shelve
+        if ($entity->isA('bookshelf')) {
+            $entities = Bookshelf::visible()->get();
+        }
+
+        return $entities;
+    }
+}

app/Entities/Tools/SlugGenerator.php

@@ -0,0 +1,53 @@
+<?php namespace BookStack\Entities\Tools;
+
+use BookStack\Entities\Models\BookChild;
+use BookStack\Interfaces\Sluggable;
+use Illuminate\Support\Str;
+
+class SlugGenerator
+{
+
+    /**
+     * Generate a fresh slug for the given entity.
+     * The slug will generated so it does not conflict within the same parent item.
+     */
+    public function generate(Sluggable $model): string
+    {
+        $slug = $this->formatNameAsSlug($model->name);
+        while ($this->slugInUse($slug, $model)) {
+            $slug .= '-' . Str::random(3);
+        }
+        return $slug;
+    }
+
+    /**
+     * Format a name as a url slug.
+     */
+    protected function formatNameAsSlug(string $name): string
+    {
+        $slug = Str::slug($name);
+        if ($slug === "") {
+            $slug = substr(md5(rand(1, 500)), 0, 5);
+        }
+        return $slug;
+    }
+
+    /**
+     * Check if a slug is already in-use for this
+     * type of model within the same parent.
+     */
+    protected function slugInUse(string $slug, Sluggable $model): bool
+    {
+        $query = $model->newQuery()->where('slug', '=', $slug);
+
+        if ($model instanceof BookChild) {
+            $query->where('book_id', '=', $model->book_id);
+        }
+
+        if ($model->id) {
+            $query->where('id', '!=', $model->id);
+        }
+
+        return $query->count() > 0;
+    }
+}

app/Entities/Tools/TrashCan.php

@@ -0,0 +1,326 @@
+<?php namespace BookStack\Entities\Tools;
+
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Bookshelf;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Models\Deletion;
+use BookStack\Entities\Models\Entity;
+use BookStack\Entities\EntityProvider;
+use BookStack\Entities\Models\HasCoverImage;
+use BookStack\Entities\Models\Page;
+use BookStack\Exceptions\NotifyException;
+use BookStack\Facades\Activity;
+use BookStack\Uploads\AttachmentService;
+use BookStack\Uploads\ImageService;
+use Exception;
+use Illuminate\Support\Carbon;
+
+class TrashCan
+{
+
+    /**
+     * Send a shelf to the recycle bin.
+     */
+    public function softDestroyShelf(Bookshelf $shelf)
+    {
+        Deletion::createForEntity($shelf);
+        $shelf->delete();
+    }
+
+    /**
+     * Send a book to the recycle bin.
+     * @throws Exception
+     */
+    public function softDestroyBook(Book $book)
+    {
+        Deletion::createForEntity($book);
+
+        foreach ($book->pages as $page) {
+            $this->softDestroyPage($page, false);
+        }
+
+        foreach ($book->chapters as $chapter) {
+            $this->softDestroyChapter($chapter, false);
+        }
+
+        $book->delete();
+    }
+
+    /**
+     * Send a chapter to the recycle bin.
+     * @throws Exception
+     */
+    public function softDestroyChapter(Chapter $chapter, bool $recordDelete = true)
+    {
+        if ($recordDelete) {
+            Deletion::createForEntity($chapter);
+        }
+
+        if (count($chapter->pages) > 0) {
+            foreach ($chapter->pages as $page) {
+                $this->softDestroyPage($page, false);
+            }
+        }
+
+        $chapter->delete();
+    }
+
+    /**
+     * Send a page to the recycle bin.
+     * @throws Exception
+     */
+    public function softDestroyPage(Page $page, bool $recordDelete = true)
+    {
+        if ($recordDelete) {
+            Deletion::createForEntity($page);
+        }
+
+        // Check if set as custom homepage & remove setting if not used or throw error if active
+        $customHome = setting('app-homepage', '0:');
+        if (intval($page->id) === intval(explode(':', $customHome)[0])) {
+            if (setting('app-homepage-type') === 'page') {
+                throw new NotifyException(trans('errors.page_custom_home_deletion'), $page->getUrl());
+            }
+            setting()->remove('app-homepage');
+        }
+
+        $page->delete();
+    }
+
+    /**
+     * Remove a bookshelf from the system.
+     * @throws Exception
+     */
+    protected function destroyShelf(Bookshelf $shelf): int
+    {
+        $this->destroyCommonRelations($shelf);
+        $shelf->forceDelete();
+        return 1;
+    }
+
+    /**
+     * Remove a book from the system.
+     * Destroys any child chapters and pages.
+     * @throws Exception
+     */
+    protected function destroyBook(Book $book): int
+    {
+        $count = 0;
+        $pages = $book->pages()->withTrashed()->get();
+        foreach ($pages as $page) {
+            $this->destroyPage($page);
+            $count++;
+        }
+
+        $chapters = $book->chapters()->withTrashed()->get();
+        foreach ($chapters as $chapter) {
+            $this->destroyChapter($chapter);
+            $count++;
+        }
+
+        $this->destroyCommonRelations($book);
+        $book->forceDelete();
+        return $count + 1;
+    }
+
+    /**
+     * Remove a chapter from the system.
+     * Destroys all pages within.
+     * @throws Exception
+     */
+    protected function destroyChapter(Chapter $chapter): int
+    {
+        $count = 0;
+        $pages = $chapter->pages()->withTrashed()->get();
+        if (count($pages)) {
+            foreach ($pages as $page) {
+                $this->destroyPage($page);
+                $count++;
+            }
+        }
+
+        $this->destroyCommonRelations($chapter);
+        $chapter->forceDelete();
+        return $count + 1;
+    }
+
+    /**
+     * Remove a page from the system.
+     * @throws Exception
+     */
+    protected function destroyPage(Page $page): int
+    {
+        $this->destroyCommonRelations($page);
+
+        // Delete Attached Files
+        $attachmentService = app(AttachmentService::class);
+        foreach ($page->attachments as $attachment) {
+            $attachmentService->deleteFile($attachment);
+        }
+
+        $page->forceDelete();
+        return 1;
+    }
+
+    /**
+     * Get the total counts of those that have been trashed
+     * but not yet fully deleted (In recycle bin).
+     */
+    public function getTrashedCounts(): array
+    {
+        $counts = [];
+
+        /** @var Entity $instance */
+        foreach ((new EntityProvider)->all() as $key => $instance) {
+            $counts[$key] = $instance->newQuery()->onlyTrashed()->count();
+        }
+
+        return $counts;
+    }
+
+    /**
+     * Destroy all items that have pending deletions.
+     * @throws Exception
+     */
+    public function empty(): int
+    {
+        $deletions = Deletion::all();
+        $deleteCount = 0;
+        foreach ($deletions as $deletion) {
+            $deleteCount += $this->destroyFromDeletion($deletion);
+        }
+        return $deleteCount;
+    }
+
+    /**
+     * Destroy an element from the given deletion model.
+     * @throws Exception
+     */
+    public function destroyFromDeletion(Deletion $deletion): int
+    {
+        // We directly load the deletable element here just to ensure it still
+        // exists in the event it has already been destroyed during this request.
+        $entity = $deletion->deletable()->first();
+        $count = 0;
+        if ($entity) {
+            $count = $this->destroyEntity($deletion->deletable);
+        }
+        $deletion->delete();
+        return $count;
+    }
+
+    /**
+     * Restore the content within the given deletion.
+     * @throws Exception
+     */
+    public function restoreFromDeletion(Deletion $deletion): int
+    {
+        $shouldRestore = true;
+        $restoreCount = 0;
+        $parent = $deletion->deletable->getParent();
+
+        if ($parent && $parent->trashed()) {
+            $shouldRestore = false;
+        }
+
+        if ($shouldRestore) {
+            $restoreCount = $this->restoreEntity($deletion->deletable);
+        }
+
+        $deletion->delete();
+        return $restoreCount;
+    }
+
+    /**
+     * Automatically clear old content from the recycle bin
+     * depending on the configured lifetime.
+     * Returns the total number of deleted elements.
+     * @throws Exception
+     */
+    public function autoClearOld(): int
+    {
+        $lifetime = intval(config('app.recycle_bin_lifetime'));
+        if ($lifetime < 0) {
+            return 0;
+        }
+
+        $clearBeforeDate = Carbon::now()->addSeconds(10)->subDays($lifetime);
+        $deleteCount = 0;
+
+        $deletionsToRemove = Deletion::query()->where('created_at', '<', $clearBeforeDate)->get();
+        foreach ($deletionsToRemove as $deletion) {
+            $deleteCount += $this->destroyFromDeletion($deletion);
+        }
+
+        return $deleteCount;
+    }
+
+    /**
+     * Restore an entity so it is essentially un-deleted.
+     * Deletions on restored child elements will be removed during this restoration.
+     */
+    protected function restoreEntity(Entity $entity): int
+    {
+        $count = 1;
+        $entity->restore();
+
+        $restoreAction = function ($entity) use (&$count) {
+            if ($entity->deletions_count > 0) {
+                $entity->deletions()->delete();
+            }
+
+            $entity->restore();
+            $count++;
+        };
+
+        if ($entity instanceof Chapter || $entity instanceof Book) {
+            $entity->pages()->withTrashed()->withCount('deletions')->get()->each($restoreAction);
+        }
+
+        if ($entity instanceof Book) {
+            $entity->chapters()->withTrashed()->withCount('deletions')->get()->each($restoreAction);
+        }
+
+        return $count;
+    }
+
+    /**
+     * Destroy the given entity.
+     * @throws Exception
+     */
+    protected function destroyEntity(Entity $entity): int
+    {
+        if ($entity instanceof Page) {
+            return $this->destroyPage($entity);
+        }
+        if ($entity instanceof Chapter) {
+            return $this->destroyChapter($entity);
+        }
+        if ($entity instanceof Book) {
+            return $this->destroyBook($entity);
+        }
+        if ($entity instanceof Bookshelf) {
+            return $this->destroyShelf($entity);
+        }
+    }
+
+    /**
+     * Update entity relations to remove or update outstanding connections.
+     */
+    protected function destroyCommonRelations(Entity $entity)
+    {
+        Activity::removeEntity($entity);
+        $entity->views()->delete();
+        $entity->permissions()->delete();
+        $entity->tags()->delete();
+        $entity->comments()->delete();
+        $entity->jointPermissions()->delete();
+        $entity->searchTerms()->delete();
+        $entity->deletions()->delete();
+
+        if ($entity instanceof HasCoverImage && $entity->cover) {
+            $imageService = app()->make(ImageService::class);
+            $imageService->destroy($entity->cover);
+        }
+    }
+}

app/Exceptions/ApiAuthException.php

@@ -2,6 +2,7 @@
 
 namespace BookStack\Exceptions;
 
-class ApiAuthException extends UnauthorizedException {
+class ApiAuthException extends UnauthorizedException
+{
 
-}
+}

app/Exceptions/Handler.php

@@ -3,49 +3,52 @@
 namespace BookStack\Exceptions;
 
 use Exception;
-use Illuminate\Auth\Access\AuthorizationException;
 use Illuminate\Auth\AuthenticationException;
-use Illuminate\Database\Eloquent\ModelNotFoundException;
 use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
 use Illuminate\Validation\ValidationException;
 use Symfony\Component\HttpKernel\Exception\HttpException;
-use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 
 class Handler extends ExceptionHandler
 {
     /**
-     * A list of the exception types that should not be reported.
+     * A list of the exception types that are not reported.
      *
      * @var array
      */
     protected $dontReport = [
-        AuthorizationException::class,
-        HttpException::class,
-        ModelNotFoundException::class,
-        ValidationException::class,
         NotFoundException::class,
     ];
 
     /**
-     * Report or log an exception.
-     * This is a great spot to send exceptions to Sentry, Bugsnag, etc.
+     * A list of the inputs that are never flashed for validation exceptions.
+     *
+     * @var array
+     */
+    protected $dontFlash = [
+        'password',
+        'password_confirmation',
+    ];
+
+    /**
+     * Report or log an exception.
+     *
+     * @param Exception $exception
+     * @return void
      *
-     * @param  \Exception $e
-     * @return mixed
      * @throws Exception
      */
-    public function report(Exception $e)
+    public function report(Exception $exception)
     {
-        return parent::report($e);
+        parent::report($exception);
     }
 
     /**
      * Render an exception into an HTTP response.
      *
      * @param  \Illuminate\Http\Request $request
-     * @param  \Exception $e
+     * @param Exception $e
      * @return \Illuminate\Http\Response
      */
     public function render($request, Exception $e)
@@ -54,29 +57,6 @@ class Handler extends ExceptionHandler
             return $this->renderApiException($e);
         }
 
-        // Handle notify exceptions which will redirect to the
-        // specified location then show a notification message.
-        if ($this->isExceptionType($e, NotifyException::class)) {
-            $message = $this->getOriginalMessage($e);
-            if (!empty($message)) {
-                session()->flash('error', $message);
-            }
-            return redirect($e->redirectLocation);
-        }
-
-        // Handle pretty exceptions which will show a friendly application-fitting page
-        // Which will include the basic message to point the user roughly to the cause.
-        if ($this->isExceptionType($e, PrettyException::class)  && !config('app.debug')) {
-            $message = $this->getOriginalMessage($e);
-            $code = ($e->getCode() === 0) ? 500 : $e->getCode();
-            return response()->view('errors/' . $code, ['message' => $message], $code);
-        }
-
-        // Handle 404 errors with a loaded session to enable showing user-specific information
-        if ($this->isExceptionType($e, NotFoundHttpException::class)) {
-            return \Route::respondWithRoute('fallback');
-        }
-
         return parent::render($request, $e);
     }
 
@@ -115,35 +95,6 @@ class Handler extends ExceptionHandler
         return new JsonResponse($responseData, $code, $headers);
     }
 
-    /**
-     * Check the exception chain to compare against the original exception type.
-     * @param Exception $e
-     * @param $type
-     * @return bool
-     */
-    protected function isExceptionType(Exception $e, $type)
-    {
-        do {
-            if (is_a($e, $type)) {
-                return true;
-            }
-        } while ($e = $e->getPrevious());
-        return false;
-    }
-
-    /**
-     * Get original exception message.
-     * @param Exception $e
-     * @return string
-     */
-    protected function getOriginalMessage(Exception $e)
-    {
-        do {
-            $message = $e->getMessage();
-        } while ($e = $e->getPrevious());
-        return $message;
-    }
-
     /**
      * Convert an authentication exception into an unauthenticated response.
      *

app/Exceptions/JsonDebugException.php

@@ -22,4 +22,4 @@ class JsonDebugException extends Exception
     {
         return response()->json($this->data);
     }
-}
+}

app/Exceptions/NotFoundException.php

@@ -5,7 +5,6 @@ class NotFoundException extends PrettyException
 
     /**
      * NotFoundException constructor.
-     * @param string $message
      */
     public function __construct($message = 'Item not found')
     {

app/Exceptions/NotifyException.php

@@ -1,8 +1,10 @@
 <?php namespace BookStack\Exceptions;
 
-class NotifyException extends \Exception
-{
+use Exception;
+use Illuminate\Contracts\Support\Responsable;
 
+class NotifyException extends Exception implements Responsable
+{
     public $message;
     public $redirectLocation;
 
@@ -15,4 +17,19 @@ class NotifyException extends \Exception
         $this->redirectLocation = $redirectLocation;
         parent::__construct();
     }
+
+    /**
+     * Send the response for this type of exception.
+     * @inheritdoc
+     */
+    public function toResponse($request)
+    {
+        $message = $this->getMessage();
+
+        if (!empty($message)) {
+            session()->flash('error', $message);
+        }
+
+        return redirect($this->redirectLocation);
+    }
 }

app/Exceptions/PrettyException.php

@@ -1,6 +1,43 @@
 <?php namespace BookStack\Exceptions;
 
-class PrettyException extends \Exception
-{
+use Exception;
+use Illuminate\Contracts\Support\Responsable;
 
+class PrettyException extends Exception implements Responsable
+{
+    /**
+     * @var ?string
+     */
+    protected $subtitle = null;
+
+    /**
+     * @var ?string
+     */
+    protected $details = null;
+
+    /**
+     * Render a response for when this exception occurs.
+     * @inheritdoc
+     */
+    public function toResponse($request)
+    {
+        $code = ($this->getCode() === 0) ? 500 : $this->getCode();
+        return response()->view('errors.' . $code, [
+            'message' => $this->getMessage(),
+            'subtitle' => $this->subtitle,
+            'details' => $this->details,
+        ], $code);
+    }
+
+    public function setSubtitle(string $subtitle): self
+    {
+        $this->subtitle = $subtitle;
+        return $this;
+    }
+
+    public function setDetails(string $details): self
+    {
+        $this->details = $details;
+        return $this;
+    }
 }

app/Exceptions/UnauthorizedException.php

@@ -14,4 +14,4 @@ class UnauthorizedException extends Exception
     {
         parent::__construct($message, $code);
     }
-}
+}

app/Facades/Theme.php

@@ -1,8 +1,9 @@
 <?php namespace BookStack\Facades;
 
+use BookStack\Theming\ThemeService;
 use Illuminate\Support\Facades\Facade;
 
-class Setting extends Facade
+class Theme extends Facade
 {
     /**
      * Get the registered name of the component.
@@ -11,6 +12,6 @@ class Setting extends Facade
      */
     protected static function getFacadeAccessor()
     {
-        return 'setting';
+        return ThemeService::class;
     }
 }

app/Http/Controllers/Api/ApiController.php

@@ -5,7 +5,7 @@ use BookStack\Http\Controllers\Controller;
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Http\JsonResponse;
 
-class ApiController extends Controller
+abstract class ApiController extends Controller
 {
 
     protected $rules = [];
@@ -27,4 +27,4 @@ class ApiController extends Controller
     {
         return $this->rules;
     }
-}
+}

app/Http/Controllers/Api/ApiDocsController.php

@@ -1,8 +1,6 @@
 <?php namespace BookStack\Http\Controllers\Api;
 
 use BookStack\Api\ApiDocsGenerator;
-use Cache;
-use Illuminate\Support\Collection;
 
 class ApiDocsController extends ApiController
 {
@@ -12,7 +10,8 @@ class ApiDocsController extends ApiController
      */
     public function display()
     {
-        $docs = $this->getDocs();
+        $docs = ApiDocsGenerator::generateConsideringCache();
+        $this->setPageTitle(trans('settings.users_api_tokens_docs'));
         return view('api-docs.index', [
             'docs' => $docs,
         ]);
@@ -21,27 +20,9 @@ class ApiDocsController extends ApiController
     /**
      * Show a JSON view of the API docs data.
      */
-    public function json() {
-        $docs = $this->getDocs();
+    public function json()
+    {
+        $docs = ApiDocsGenerator::generateConsideringCache();
         return response()->json($docs);
     }
-
-    /**
-     * Get the base docs data.
-     * Checks and uses the system cache for quick re-fetching.
-     */
-    protected function getDocs(): Collection
-    {
-        $appVersion = trim(file_get_contents(base_path('version')));
-        $cacheKey = 'api-docs::' . $appVersion;
-        if (Cache::has($cacheKey) && config('app.env') === 'production') {
-            $docs = Cache::get($cacheKey);
-        } else {
-            $docs = (new ApiDocsGenerator())->generate();
-            Cache::put($cacheKey, $docs, 60*24);
-        }
-
-        return $docs;
-    }
-
 }

app/Http/Controllers/Api/BookApiController.php

@@ -1,9 +1,8 @@
 <?php namespace BookStack\Http\Controllers\Api;
 
-use BookStack\Entities\Book;
+use BookStack\Entities\Models\Book;
 use BookStack\Entities\Repos\BookRepo;
 use BookStack\Exceptions\NotifyException;
-use BookStack\Facades\Activity;
 use Illuminate\Contracts\Container\BindingResolutionException;
 use Illuminate\Http\Request;
 use Illuminate\Validation\ValidationException;
@@ -26,9 +25,6 @@ class BookApiController extends ApiController
         ],
     ];
 
-    /**
-     * BooksApiController constructor.
-     */
     public function __construct(BookRepo $bookRepo)
     {
         $this->bookRepo = $bookRepo;
@@ -41,7 +37,7 @@ class BookApiController extends ApiController
     {
         $books = Book::visible();
         return $this->apiListingResponse($books, [
-            'id', 'name', 'slug', 'description', 'created_at', 'updated_at', 'created_by', 'updated_by', 'image_id',
+            'id', 'name', 'slug', 'description', 'created_at', 'updated_at', 'created_by', 'updated_by', 'owned_by', 'image_id',
         ]);
     }
 
@@ -55,8 +51,6 @@ class BookApiController extends ApiController
         $requestData = $this->validate($request, $this->rules['create']);
 
         $book = $this->bookRepo->create($requestData);
-        Activity::add($book, 'book_create', $book->id);
-
         return response()->json($book);
     }
 
@@ -65,7 +59,7 @@ class BookApiController extends ApiController
      */
     public function read(string $id)
     {
-        $book = Book::visible()->with(['tags', 'cover', 'createdBy', 'updatedBy'])->findOrFail($id);
+        $book = Book::visible()->with(['tags', 'cover', 'createdBy', 'updatedBy', 'ownedBy'])->findOrFail($id);
         return response()->json($book);
     }
 
@@ -80,15 +74,14 @@ class BookApiController extends ApiController
 
         $requestData = $this->validate($request, $this->rules['update']);
         $book = $this->bookRepo->update($book, $requestData);
-        Activity::add($book, 'book_update', $book->id);
 
         return response()->json($book);
     }
 
     /**
-     * Delete a single book from the system.
-     * @throws NotifyException
-     * @throws BindingResolutionException
+     * Delete a single book.
+     * This will typically send the book to the recycle bin.
+     * @throws \Exception
      */
     public function delete(string $id)
     {
@@ -96,8 +89,6 @@ class BookApiController extends ApiController
         $this->checkOwnablePermission('book-delete', $book);
 
         $this->bookRepo->destroy($book);
-        Activity::addMessage('book_delete', $book->name);
-
         return response('', 204);
     }
-}
+}

app/Http/Controllers/Api/BookExportApiController.php

@@ -1,23 +1,16 @@
 <?php namespace BookStack\Http\Controllers\Api;
 
-use BookStack\Entities\Book;
-use BookStack\Entities\ExportService;
-use BookStack\Entities\Repos\BookRepo;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Tools\ExportFormatter;
 use Throwable;
 
 class BookExportApiController extends ApiController
 {
-    protected $bookRepo;
-    protected $exportService;
+    protected $exportFormatter;
 
-    /**
-     * BookExportController constructor.
-     */
-    public function __construct(BookRepo $bookRepo, ExportService $exportService)
+    public function __construct(ExportFormatter $exportFormatter)
     {
-        $this->bookRepo = $bookRepo;
-        $this->exportService = $exportService;
-        parent::__construct();
+        $this->exportFormatter = $exportFormatter;
     }
 
     /**
@@ -27,7 +20,7 @@ class BookExportApiController extends ApiController
     public function exportPdf(int $id)
     {
         $book = Book::visible()->findOrFail($id);
-        $pdfContent = $this->exportService->bookToPdf($book);
+        $pdfContent = $this->exportFormatter->bookToPdf($book);
         return $this->downloadResponse($pdfContent, $book->slug . '.pdf');
     }
 
@@ -38,7 +31,7 @@ class BookExportApiController extends ApiController
     public function exportHtml(int $id)
     {
         $book = Book::visible()->findOrFail($id);
-        $htmlContent = $this->exportService->bookToContainedHtml($book);
+        $htmlContent = $this->exportFormatter->bookToContainedHtml($book);
         return $this->downloadResponse($htmlContent, $book->slug . '.html');
     }
 
@@ -48,7 +41,7 @@ class BookExportApiController extends ApiController
     public function exportPlainText(int $id)
     {
         $book = Book::visible()->findOrFail($id);
-        $textContent = $this->exportService->bookToPlainText($book);
+        $textContent = $this->exportFormatter->bookToPlainText($book);
         return $this->downloadResponse($textContent, $book->slug . '.txt');
     }
 }

app/Http/Controllers/Api/BookshelfApiController.php

@@ -1,8 +1,7 @@
 <?php namespace BookStack\Http\Controllers\Api;
 
-use BookStack\Facades\Activity;
 use BookStack\Entities\Repos\BookshelfRepo;
-use BookStack\Entities\Bookshelf;
+use BookStack\Entities\Models\Bookshelf;
 use Exception;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Http\Request;
@@ -31,7 +30,6 @@ class BookshelfApiController extends ApiController
 
     /**
      * BookshelfApiController constructor.
-     * @param BookshelfRepo $bookshelfRepo
      */
     public function __construct(BookshelfRepo $bookshelfRepo)
     {
@@ -45,7 +43,7 @@ class BookshelfApiController extends ApiController
     {
         $shelves = Bookshelf::visible();
         return $this->apiListingResponse($shelves, [
-            'id', 'name', 'slug', 'description', 'created_at', 'updated_at', 'created_by', 'updated_by', 'image_id',
+            'id', 'name', 'slug', 'description', 'created_at', 'updated_at', 'created_by', 'updated_by', 'owned_by', 'image_id',
         ]);
     }
 
@@ -63,7 +61,6 @@ class BookshelfApiController extends ApiController
         $bookIds = $request->get('books', []);
         $shelf = $this->bookshelfRepo->create($requestData, $bookIds);
 
-        Activity::add($shelf, 'bookshelf_create', $shelf->id);
         return response()->json($shelf);
     }
 
@@ -73,7 +70,7 @@ class BookshelfApiController extends ApiController
     public function read(string $id)
     {
         $shelf = Bookshelf::visible()->with([
-            'tags', 'cover', 'createdBy', 'updatedBy',
+            'tags', 'cover', 'createdBy', 'updatedBy', 'ownedBy',
             'books' => function (BelongsToMany $query) {
                 $query->visible()->get(['id', 'name', 'slug']);
             }
@@ -94,19 +91,17 @@ class BookshelfApiController extends ApiController
         $this->checkOwnablePermission('bookshelf-update', $shelf);
 
         $requestData = $this->validate($request, $this->rules['update']);
-
         $bookIds = $request->get('books', null);
 
         $shelf = $this->bookshelfRepo->update($shelf, $requestData, $bookIds);
-        Activity::add($shelf, 'bookshelf_update', $shelf->id);
-
         return response()->json($shelf);
     }
 
 
 
     /**
-     * Delete a single shelf from the system.
+     * Delete a single shelf.
+     * This will typically send the shelf to the recycle bin.
      * @throws Exception
      */
     public function delete(string $id)
@@ -115,8 +110,6 @@ class BookshelfApiController extends ApiController
         $this->checkOwnablePermission('bookshelf-delete', $shelf);
 
         $this->bookshelfRepo->destroy($shelf);
-        Activity::addMessage('bookshelf_delete', $shelf->name);
-
         return response('', 204);
     }
-}
+}

app/Http/Controllers/Api/ChapterApiController.php

@@ -1,7 +1,8 @@
 <?php namespace BookStack\Http\Controllers\Api;
 
-use BookStack\Entities\Book;
-use BookStack\Entities\Chapter;
+use BookStack\Actions\ActivityType;
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Chapter;
 use BookStack\Entities\Repos\ChapterRepo;
 use BookStack\Facades\Activity;
 use Illuminate\Database\Eloquent\Relations\HasMany;
@@ -42,7 +43,7 @@ class ChapterApiController extends ApiController
         $chapters = Chapter::visible();
         return $this->apiListingResponse($chapters, [
             'id', 'book_id', 'name', 'slug', 'description', 'priority',
-            'created_at', 'updated_at', 'created_by', 'updated_by',
+            'created_at', 'updated_at', 'created_by', 'updated_by', 'owned_by',
         ]);
     }
 
@@ -58,8 +59,6 @@ class ChapterApiController extends ApiController
         $this->checkOwnablePermission('chapter-create', $book);
 
         $chapter = $this->chapterRepo->create($request->all(), $book);
-        Activity::add($chapter, 'chapter_create', $book->id);
-
         return response()->json($chapter->load(['tags']));
     }
 
@@ -68,7 +67,7 @@ class ChapterApiController extends ApiController
      */
     public function read(string $id)
     {
-        $chapter = Chapter::visible()->with(['tags', 'createdBy', 'updatedBy', 'pages' => function (HasMany $query) {
+        $chapter = Chapter::visible()->with(['tags', 'createdBy', 'updatedBy', 'ownedBy', 'pages' => function (HasMany $query) {
             $query->visible()->get(['id', 'name', 'slug']);
         }])->findOrFail($id);
         return response()->json($chapter);
@@ -83,13 +82,12 @@ class ChapterApiController extends ApiController
         $this->checkOwnablePermission('chapter-update', $chapter);
 
         $updatedChapter = $this->chapterRepo->update($chapter, $request->all());
-        Activity::add($chapter, 'chapter_update', $chapter->book->id);
-
         return response()->json($updatedChapter->load(['tags']));
     }
 
     /**
-     * Delete a chapter from the system.
+     * Delete a chapter.
+     * This will typically send the chapter to the recycle bin.
      */
     public function delete(string $id)
     {
@@ -97,8 +95,6 @@ class ChapterApiController extends ApiController
         $this->checkOwnablePermission('chapter-delete', $chapter);
 
         $this->chapterRepo->destroy($chapter);
-        Activity::addMessage('chapter_delete', $chapter->name, $chapter->book->id);
-
         return response('', 204);
     }
 }

app/Http/Controllers/Api/ChapterExportApiController.php

@@ -1,23 +1,20 @@
 <?php namespace BookStack\Http\Controllers\Api;
 
-use BookStack\Entities\Chapter;
-use BookStack\Entities\ExportService;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Tools\ExportFormatter;
 use BookStack\Entities\Repos\BookRepo;
 use Throwable;
 
 class ChapterExportApiController extends ApiController
 {
-    protected $chapterRepo;
-    protected $exportService;
+    protected $exportFormatter;
 
     /**
      * ChapterExportController constructor.
      */
-    public function __construct(BookRepo $chapterRepo, ExportService $exportService)
+    public function __construct(ExportFormatter $exportFormatter)
     {
-        $this->chapterRepo = $chapterRepo;
-        $this->exportService = $exportService;
-        parent::__construct();
+        $this->exportFormatter = $exportFormatter;
     }
 
     /**
@@ -27,7 +24,7 @@ class ChapterExportApiController extends ApiController
     public function exportPdf(int $id)
     {
         $chapter = Chapter::visible()->findOrFail($id);
-        $pdfContent = $this->exportService->chapterToPdf($chapter);
+        $pdfContent = $this->exportFormatter->chapterToPdf($chapter);
         return $this->downloadResponse($pdfContent, $chapter->slug . '.pdf');
     }
 
@@ -38,7 +35,7 @@ class ChapterExportApiController extends ApiController
     public function exportHtml(int $id)
     {
         $chapter = Chapter::visible()->findOrFail($id);
-        $htmlContent = $this->exportService->chapterToContainedHtml($chapter);
+        $htmlContent = $this->exportFormatter->chapterToContainedHtml($chapter);
         return $this->downloadResponse($htmlContent, $chapter->slug . '.html');
     }
 
@@ -48,7 +45,7 @@ class ChapterExportApiController extends ApiController
     public function exportPlainText(int $id)
     {
         $chapter = Chapter::visible()->findOrFail($id);
-        $textContent = $this->exportService->chapterToPlainText($chapter);
+        $textContent = $this->exportFormatter->chapterToPlainText($chapter);
         return $this->downloadResponse($textContent, $chapter->slug . '.txt');
     }
 }

app/Http/Controllers/Api/PageApiController.php

@@ -0,0 +1,141 @@
+<?php
+
+namespace BookStack\Http\Controllers\Api;
+
+use BookStack\Entities\Models\Book;
+use BookStack\Entities\Models\Chapter;
+use BookStack\Entities\Models\Page;
+use BookStack\Entities\Repos\PageRepo;
+use BookStack\Exceptions\PermissionsException;
+use Exception;
+use Illuminate\Http\Request;
+
+class PageApiController extends ApiController
+{
+    protected $pageRepo;
+
+    protected $rules = [
+        'create' => [
+            'book_id' => 'required_without:chapter_id|integer',
+            'chapter_id' => 'required_without:book_id|integer',
+            'name' => 'required|string|max:255',
+            'html' => 'required_without:markdown|string',
+            'markdown' => 'required_without:html|string',
+            'tags' => 'array',
+        ],
+        'update' => [
+            'book_id' => 'required|integer',
+            'chapter_id' => 'required|integer',
+            'name' => 'string|min:1|max:255',
+            'html' => 'string',
+            'markdown' => 'string',
+            'tags' => 'array',
+        ],
+    ];
+
+    public function __construct(PageRepo $pageRepo)
+    {
+        $this->pageRepo = $pageRepo;
+    }
+
+    /**
+     * Get a listing of pages visible to the user.
+     */
+    public function list()
+    {
+        $pages = Page::visible();
+        return $this->apiListingResponse($pages, [
+            'id', 'book_id', 'chapter_id', 'name', 'slug', 'priority',
+            'draft', 'template',
+            'created_at', 'updated_at',
+            'created_by', 'updated_by', 'owned_by',
+        ]);
+    }
+
+    /**
+     * Create a new page in the system.
+     *
+     * The ID of a parent book or chapter is required to indicate
+     * where this page should be located.
+     *
+     * Any HTML content provided should be kept to a single-block depth of plain HTML
+     * elements to remain compatible with the BookStack front-end and editors.
+     */
+    public function create(Request $request)
+    {
+        $this->validate($request, $this->rules['create']);
+
+        if ($request->has('chapter_id')) {
+            $parent = Chapter::visible()->findOrFail($request->get('chapter_id'));
+        } else {
+            $parent = Book::visible()->findOrFail($request->get('book_id'));
+        }
+        $this->checkOwnablePermission('page-create', $parent);
+
+        $draft = $this->pageRepo->getNewDraftPage($parent);
+        $this->pageRepo->publishDraft($draft, $request->only(array_keys($this->rules['create'])));
+
+        return response()->json($draft->forJsonDisplay());
+    }
+
+    /**
+     * View the details of a single page.
+     *
+     * Pages will always have HTML content. They may have markdown content
+     * if the markdown editor was used to last update the page.
+     */
+    public function read(string $id)
+    {
+        $page = $this->pageRepo->getById($id, []);
+        return response()->json($page->forJsonDisplay());
+    }
+
+    /**
+     * Update the details of a single page.
+     *
+     * See the 'create' action for details on the provided HTML/Markdown.
+     * Providing a 'book_id' or 'chapter_id' property will essentially move
+     * the page into that parent element if you have permissions to do so.
+     */
+    public function update(Request $request, string $id)
+    {
+        $page = $this->pageRepo->getById($id, []);
+        $this->checkOwnablePermission('page-update', $page);
+
+        $parent = null;
+        if ($request->has('chapter_id')) {
+            $parent = Chapter::visible()->findOrFail($request->get('chapter_id'));
+        } else if ($request->has('book_id')) {
+            $parent = Book::visible()->findOrFail($request->get('book_id'));
+        }
+
+        if ($parent && !$parent->matches($page->getParent())) {
+            $this->checkOwnablePermission('page-delete', $page);
+            try {
+                $this->pageRepo->move($page, $parent->getType() . ':' . $parent->id);
+            } catch (Exception $exception) {
+                if ($exception instanceof  PermissionsException) {
+                    $this->showPermissionError();
+                }
+
+                return $this->jsonError(trans('errors.selected_book_chapter_not_found'));
+            }
+        }
+
+        $updatedPage = $this->pageRepo->update($page, $request->all());
+        return response()->json($updatedPage->forJsonDisplay());
+    }
+
+    /**
+     * Delete a page.
+     * This will typically send the page to the recycle bin.
+     */
+    public function delete(string $id)
+    {
+        $page = $this->pageRepo->getById($id, []);
+        $this->checkOwnablePermission('page-delete', $page);
+
+        $this->pageRepo->destroy($page);
+        return response('', 204);
+    }
+}

app/Http/Controllers/Api/PageExportApiController.php

@@ -0,0 +1,47 @@
+<?php namespace BookStack\Http\Controllers\Api;
+
+use BookStack\Entities\Models\Page;
+use BookStack\Entities\Tools\ExportFormatter;
+use Throwable;
+
+class PageExportApiController extends ApiController
+{
+    protected $exportFormatter;
+
+    public function __construct(ExportFormatter $exportFormatter)
+    {
+        $this->exportFormatter = $exportFormatter;
+    }
+
+    /**
+     * Export a page as a PDF file.
+     * @throws Throwable
+     */
+    public function exportPdf(int $id)
+    {
+        $page = Page::visible()->findOrFail($id);
+        $pdfContent = $this->exportFormatter->pageToPdf($page);
+        return $this->downloadResponse($pdfContent, $page->slug . '.pdf');
+    }
+
+    /**
+     * Export a page as a contained HTML file.
+     * @throws Throwable
+     */
+    public function exportHtml(int $id)
+    {
+        $page = Page::visible()->findOrFail($id);
+        $htmlContent = $this->exportFormatter->pageToContainedHtml($page);
+        return $this->downloadResponse($htmlContent, $page->slug . '.html');
+    }
+
+    /**
+     * Export a page as a plain text file.
+     */
+    public function exportPlainText(int $id)
+    {
+        $page = Page::visible()->findOrFail($id);
+        $textContent = $this->exportFormatter->pageToPlainText($page);
+        return $this->downloadResponse($textContent, $page->slug . '.txt');
+    }
+}

app/Http/Controllers/AttachmentController.php

@@ -25,7 +25,6 @@ class AttachmentController extends Controller
         $this->attachmentService = $attachmentService;
         $this->attachment = $attachment;
         $this->pageRepo = $pageRepo;
-        parent::__construct();
     }
 
 

app/Http/Controllers/AuditLogController.php

@@ -20,14 +20,23 @@ class AuditLogController extends Controller
             'sort' => $request->get('sort', 'created_at'),
             'date_from' => $request->get('date_from', ''),
             'date_to' => $request->get('date_to', ''),
+            'user' => $request->get('user', ''),
         ];
 
         $query = Activity::query()
-            ->with(['entity', 'user'])
+            ->with([
+                'entity' => function ($query) {
+                    $query->withTrashed();
+                },
+                'user'
+            ])
             ->orderBy($listDetails['sort'], $listDetails['order']);
 
         if ($listDetails['event']) {
-            $query->where('key', '=', $listDetails['event']);
+            $query->where('type', '=', $listDetails['event']);
+        }
+        if ($listDetails['user']) {
+            $query->where('user_id', '=', $listDetails['user']);
         }
 
         if ($listDetails['date_from']) {
@@ -40,12 +49,12 @@ class AuditLogController extends Controller
         $activities = $query->paginate(100);
         $activities->appends($listDetails);
 
-        $keys = DB::table('activities')->select('key')->distinct()->pluck('key');
+        $types = DB::table('activities')->select('type')->distinct()->pluck('type');
         $this->setPageTitle(trans('settings.audit'));
         return view('settings.audit', [
             'activities' => $activities,
             'listDetails' => $listDetails,
-            'activityKeys' => $keys,
+            'activityTypes' => $types,
         ]);
     }
 }