feat: Add tasks reordering

Closes #50, closes #232

client/src/selectors/card.js

@@ -71,7 +71,7 @@ export const makeTasksByCardIdSelector = () =>
         return cardModel;
       }
 
-      return cardModel.tasks.toRefArray();
+      return cardModel.getOrderedTasksQuerySet().toRefArray();
     },
   );
 

client/src/selectors/core.js

@@ -76,3 +76,19 @@ export const nextCardPositionSelector = createSelector(
     return nextPosition(listModel.getOrderedFilteredCardsModelArray(), index, excludedId);
   },
 );
+
+export const nextTaskPositionSelector = createSelector(
+  orm,
+  (_, cardId) => cardId,
+  (_, __, index) => index,
+  (_, __, ___, excludedId) => excludedId,
+  ({ Card }, cardId, index, excludedId) => {
+    const cardModel = Card.withId(cardId);
+
+    if (!cardModel) {
+      return cardModel;
+    }
+
+    return nextPosition(cardModel.getOrderedTasksQuerySet().toRefArray(), index, excludedId);
+  },
+);

client/src/selectors/index.js

@@ -10,4 +10,5 @@ export * from './board';
 export * from './board-membership';
 export * from './list';
 export * from './card';
+export * from './task';
 export * from './attachment';

client/src/selectors/task.js

@@ -0,0 +1,20 @@
+import { createSelector } from 'redux-orm';
+
+import orm from '../orm';
+
+export const makeTaskByIdSelector = () =>
+  createSelector(
+    orm,
+    (_, id) => id,
+    ({ Task }, id) => {
+      const taskModel = Task.withId(id);
+
+      if (!taskModel) {
+        return taskModel;
+      }
+
+      return taskModel.ref;
+    },
+  );
+
+export const taskByIdSelector = makeTaskByIdSelector();