refactor: save dates as unix timestamps in database

backend/internal/model/base.go

@@ -2,6 +2,7 @@ package model
 
 import (
 	"github.com/google/uuid"
+	model "github.com/stonith404/pocket-id/backend/internal/model/types"
 	"gorm.io/gorm"
 	"time"
 )
@@ -9,12 +10,13 @@ import (
 // Base contains common columns for all tables.
 type Base struct {
 	ID        string `gorm:"primaryKey;not null"`
-	CreatedAt time.Time
+	CreatedAt model.DateTime
 }
 
 func (b *Base) BeforeCreate(_ *gorm.DB) (err error) {
 	if b.ID == "" {
 		b.ID = uuid.New().String()
 	}
+	b.CreatedAt = model.DateTime(time.Now())
 	return
 }

backend/internal/model/oidc.go

@@ -4,8 +4,8 @@ import (
 	"database/sql/driver"
 	"encoding/json"
 	"errors"
+	datatype "github.com/stonith404/pocket-id/backend/internal/model/types"
 	"gorm.io/gorm"
-	"time"
 )
 
 type UserAuthorizedOidcClient struct {
@@ -23,7 +23,7 @@ type OidcAuthorizationCode struct {
 	Code      string
 	Scope     string
 	Nonce     string
-	ExpiresAt time.Time
+	ExpiresAt datatype.DateTime
 
 	UserID string
 	User   User

backend/internal/model/types/date_time.go

@@ -0,0 +1,47 @@
+package datatype
+
+import (
+	"database/sql/driver"
+	"time"
+)
+
+// DateTime custom type for time.Time to store date as unix timestamp in the database
+type DateTime time.Time
+
+func (date *DateTime) Scan(value interface{}) (err error) {
+	*date = DateTime(value.(time.Time))
+	return
+}
+
+func (date DateTime) Value() (driver.Value, error) {
+	return time.Time(date).Unix(), nil
+}
+
+func (date DateTime) UTC() time.Time {
+	return time.Time(date).UTC()
+}
+
+func (date DateTime) ToTime() time.Time {
+	return time.Time(date)
+}
+
+// GormDataType gorm common data type
+func (date DateTime) GormDataType() string {
+	return "date"
+}
+
+func (date DateTime) GobEncode() ([]byte, error) {
+	return time.Time(date).GobEncode()
+}
+
+func (date *DateTime) GobDecode(b []byte) error {
+	return (*time.Time)(date).GobDecode(b)
+}
+
+func (date DateTime) MarshalJSON() ([]byte, error) {
+	return time.Time(date).MarshalJSON()
+}
+
+func (date *DateTime) UnmarshalJSON(b []byte) error {
+	return (*time.Time)(date).UnmarshalJSON(b)
+}

backend/internal/model/user.go

@@ -3,7 +3,7 @@ package model
 import (
 	"github.com/go-webauthn/webauthn/protocol"
 	"github.com/go-webauthn/webauthn/webauthn"
-	"time"
+	"github.com/stonith404/pocket-id/backend/internal/model/types"
 )
 
 type User struct {
@@ -61,7 +61,7 @@ func (u User) WebAuthnCredentialDescriptors() (descriptors []protocol.Credential
 type OneTimeAccessToken struct {
 	Base
 	Token     string
-	ExpiresAt time.Time
+	ExpiresAt datatype.DateTime
 
 	UserID string
 	User   User