Entity Repo & Controller Refactor (#1690)

* Started mass-refactoring of the current entity repos

* Rewrote book tree logic

- Now does two simple queries instead of one really complex one.
- Extracted logic into its own class.
- Remove model-level akward union field listing.
- Logic now more readable than being large separate query and
compilation functions.

* Extracted and split book sort logic

* Finished up Book controller/repo organisation

* Refactored bookshelves controllers and repo parts

* Fixed issues found via phpunit

* Refactored Chapter controller

* Updated Chapter export controller

* Started Page controller/repo refactor

* Refactored another chunk of PageController

* Completed initial pagecontroller refactor pass

* Fixed tests and continued reduction of old repos

* Removed old page remove and further reduced entity repo

* Removed old entity repo, split out page controller

* Ran phpcbf and split out some page content methods

* Tidied up some EntityProvider elements

* Fixed issued caused by viewservice change

app/Http/Controllers/Controller.php

@@ -59,7 +59,7 @@ abstract class Controller extends BaseController
             $response = response()->json(['error' => trans('errors.permissionJson')], 403);
         } else {
             $response = redirect('/');
-            $this->showErrorNotification( trans('errors.permission'));
+            $this->showErrorNotification(trans('errors.permission'));
         }
 
         throw new HttpResponseException($response);
@@ -129,7 +129,7 @@ abstract class Controller extends BaseController
      */
     protected function jsonError($messageText = "", $statusCode = 500)
     {
-        return response()->json(['message' => $messageText], $statusCode);
+        return response()->json(['message' => $messageText, 'status' => 'error'], $statusCode);
     }
 
     /**
@@ -189,4 +189,12 @@ abstract class Controller extends BaseController
     {
         session()->flash('error', $message);
     }
+
+    /**
+     * Get the validation rules for image files.
+     */
+    protected function getImageValidationRules(): string
+    {
+        return 'image_extension|no_double_extension|mimes:jpeg,png,gif,bmp,webp,tiff';
+    }
 }