FEATURE #1442: add uploaded file detail

This commit adds functionality for editing keywords and description of selected file. This commit also includes JS library for syntax highlighting (https://highlighjs.org)

app/Events/EditFile.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Events;
+
+use App\Events\Event;
+use App\Models\File;
+use Illuminate\Queue\SerializesModels;
+use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
+
+class EditFile extends Event
+{
+    use SerializesModels;
+    /**
+     * @var File
+     */
+    public $file;
+
+    /**
+     * Create a new event instance.
+     *
+     * @param File $file
+     */
+    public function __construct(File $file)
+    {
+        //
+        $this->file = $file;
+    }
+
+    /**
+     * Get the channels the event should be broadcast on.
+     *
+     * @return array
+     */
+    public function broadcastOn()
+    {
+        return [];
+    }
+}

app/Helpers/FileManager.php

@@ -63,4 +63,78 @@ class FileManager
 
         return (round($bytes, 2) . " " . $label[$i]);
     }
+
+    /**
+     * Get preview for file detail
+     *
+     * @param File $file
+     *
+     * @return \Illuminate\Contracts\Routing\UrlGenerator|string
+     */
+    public static function getLargePreview(File $file)
+    {
+        list($type, $subtype) = explode('/', $file->mime_type);
+
+        $url = config('app.upload_url') . '/' . $file->filename;
+        $path = config('app.upload_path') . DIRECTORY_SEPARATOR . $file->filename;
+
+        switch ($type) {
+            case 'image':
+                return '<img src="' . $url . '" alt="' . $file->description . '" />';
+                break;
+            case 'text':
+
+                $string = '<pre><code>';
+                $string .= htmlspecialchars(file_get_contents($path));
+                $string .= '</pre></code>';
+
+                return $string;
+                break;
+            case 'application':
+                switch ($subtype) {
+                    case 'pdf':
+                        return '<i class="fa fa-file-pdf-o"></i>';
+                        break;
+                    default:
+                        return '<i class="fa fa-newspaper-o"></i>';
+                        break;
+                }
+                break;
+            default:
+                return self::getPreview($file);
+                break;
+        }
+    }
+
+    /**
+     * @param File $file
+     *
+     * @return array
+     */
+    public static function getAdditionalInfo(File $file)
+    {
+        list($type, $subtype) = explode('/', $file->mime_type);
+
+        $path = config('app.upload_path') . DIRECTORY_SEPARATOR . $file->filename;
+
+        switch ($type) {
+            case 'text':
+
+                return [
+                    trans('admin/fileManager.encoding') => mb_detect_encoding(file_get_contents($path))
+                ];
+                break;
+
+            case 'image':
+                list ($width, $height) = getimagesize($path);
+
+                return [
+                    trans('admin/fileManager.resolution') => $height . ' x ' . $width,
+                ];
+
+                break;
+        }
+
+        return [];
+    }
 }

app/Http/Controllers/Admin/EditUploadedFile.php

@@ -0,0 +1,102 @@
+<?php
+
+namespace App\Http\Controllers\Admin;
+
+use App\Events\EditFile;
+use App\Helpers\FileManager;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\EditUploadedFileRequest;
+use App\Models\File;
+use Illuminate\Support\Facades\Event;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+
+class EditUploadedFile extends Controller
+{
+    /**
+     * Edit form
+     *
+     * Render edit form for displaying details and updating given file
+     *
+     * @param int $id file id
+     *
+     * @return \Illuminate\Contracts\View\Factory|\Illuminate\Http\RedirectResponse|\Illuminate\View\View
+     */
+    public function getDetail($id)
+    {
+        try {
+            $file = File::findOrFail($id);
+        } catch (NotFoundHttpException $e) {
+            return $this->fileNotFound();
+        }
+
+        return view('admin.fileManager.edit', [
+            'file'      => $file,
+            'extraInfo' => FileManager::getAdditionalInfo($file)
+        ]);
+    }
+
+    /**
+     * Updates file
+     *
+     * User can change only keywords, original filename and description. Mime type, hash and other fields remain
+     * unchanged
+     *
+     * @param EditUploadedFileRequest $request
+     * @param                         $id
+     *
+     * @return \Illuminate\Http\RedirectResponse
+     */
+    public function postEdit(EditUploadedFileRequest $request, $id)
+    {
+        try {
+            $file = File::findOrFail($id);
+        } catch (NotFoundHttpException $e) {
+            return $this->fileNotFound();
+        }
+
+        // set values from form
+        $file->keywords = $request->keywords;
+        $file->description = $request->description;
+        $file->save();
+
+        // fire action
+        Event::fire(new EditFile($file));
+
+        // update successfull
+        return redirect()
+            ->route('upload.detail', ['id' => $id])
+            ->with('success', trans('admin/fileManager.successfullyChanged'));
+    }
+
+    /**
+     * Deletes file
+     *
+     * @param $id
+     */
+    public function deleteFile($id)
+    {
+        try {
+            $file = File::findOrFail($id);
+        } catch (NotFoundHttpException $e) {
+            return $this->fileNotFound();
+        }
+
+        $file->delete();
+
+        return redirect()
+            ->route('upload.overview')
+            ->with('success', trans('admin/fileManager.fileDeleted'));
+    }
+
+    /**
+     * Redirects user to files overview
+     *
+     * @return \Illuminate\Http\RedirectResponse
+     */
+    private function fileNotFound()
+    {
+        return redirect()
+            ->route('upload.overview')
+            ->with('error', trans('admin/fileManager.fileNotFound'));
+    }
+}

app/Http/Controllers/Admin/EditUploadedFiles.php

@@ -1,13 +0,0 @@
-<?php
-
-namespace App\Http\Controllers\Admin;
-
-use Illuminate\Http\Request;
-
-use App\Http\Requests;
-use App\Http\Controllers\Controller;
-
-class EditUploadedFiles extends Controller
-{
-    //
-}

app/Http/Requests/EditUploadedFileRequest.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Http\Requests;
+
+class EditUploadedFileRequest extends Request
+{
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'keywords' => 'max:255'
+        ];
+    }
+}

app/Http/Requests/UploadFileRequest.php

@@ -9,6 +9,6 @@ class UploadFileRequest extends UploadRequest
      */
     protected function setRules()
     {
-        $this->rules = ['file' => 'required|image'];
+        $this->rules = ['file' => 'required'];
     }
 }

app/Http/routes.php

@@ -93,6 +93,15 @@ Route::group([
     Route::get('upload/file', 'UploadFile@getFile')
          ->name('upload.file');
 
+    Route::get('upload/detail/{id}', 'EditUploadedFile@getDetail')
+         ->name('upload.detail');
+
+    Route::post('upload/detail/{id}', 'EditUploadedFile@postEdit')
+         ->name('upload.postEdit');
+
+    Route::get('upload/delete/{id}', 'EditUploadedFile@deleteFile')
+         ->name('upload.delete');
+
     Route::get('upload/image', 'UploadFile@getImage')
          ->name('upload.image');
 

app/Listeners/LogEditFile.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace App\Listeners;
+
+use App\Events\EditFile;
+use Illuminate\Queue\InteractsWithQueue;
+use Illuminate\Contracts\Queue\ShouldQueue;
+
+class LogEditFile
+{
+    /**
+     * Create the event listener.
+     *
+     * @return void
+     */
+    public function __construct()
+    {
+        //
+    }
+
+    /**
+     * Handle the event.
+     *
+     * @param  EditFile  $event
+     * @return void
+     */
+    public function handle(EditFile $event)
+    {
+        //
+    }
+}

app/Providers/EventServiceProvider.php

@@ -34,6 +34,9 @@ class EventServiceProvider extends ServiceProvider
         'App\Events\UploadFile'           => [
             'App\Listeners\LogUploadFile'
         ],
+        'App\Events\EditFile'             => [
+            'App\Listeners\LogEditFile'
+        ],
         // internal Laravel events - should work as auth.login and auth.logout, however it doesn't...
         'Illuminate\Auth\Events\Login'    => [
             'App\Listeners\LogLogin'