app/Helpers/PermissionsHelper.php

@@ -50,6 +50,23 @@ class PermissionsHelper
             ->count() > 0;
     }
 
+    public function usersWhoCan_Album(Album $album, $permission)
+    {
+        $users = DB::table('album_permissions_cache')
+                ->join('permissions', 'permissions.id', '=', 'album_permissions_cache.permission_id')
+                ->where([
+                    ['album_permissions_cache.album_id', $album->id],
+                    ['permissions.section', 'album'],
+                    ['permissions.description', $permission]
+                ])
+                ->get();
+
+        // Include the album's owner (who can do everything)
+        $users->push($album->user);
+
+        return $users;
+    }
+
     private function rebuildAlbumCache()
     {
         // Get a list of albums

app/Http/Controllers/Gallery/PhotoCommentController.php

@@ -2,11 +2,15 @@
 
 namespace App\Http\Controllers\Gallery;
 
+use App\Album;
 use App\Facade\Theme;
 use App\Facade\UserConfig;
 use App\Helpers\DbHelper;
+use App\Helpers\PermissionsHelper;
 use App\Http\Controllers\Controller;
 use App\Http\Requests\StorePhotoCommentRequest;
+use App\Mail\ModeratePhotoComment;
+use App\Permission;
 use App\Photo;
 use App\PhotoComment;
 use App\User;
@@ -14,6 +18,7 @@ use Illuminate\Http\Request;
 use Illuminate\Support\Facades\App;
 use Illuminate\Support\Facades\Auth;
 use Illuminate\Support\Facades\Gate;
+use Illuminate\Support\Facades\Mail;
 use Illuminate\Validation\ValidationException;
 
 class PhotoCommentController extends Controller
@@ -171,6 +176,12 @@ class PhotoCommentController extends Controller
                 $isAutoApproved = true;
             }
 
+            // Send notification e-mails to moderators or album owner
+            if (!$isAutoApproved)
+            {
+                $this->notifyAlbumModerators($album, $photo, $comment);
+            }
+
             $comment->save();
 
             if ($isAutoApproved)
@@ -241,4 +252,25 @@ class PhotoCommentController extends Controller
 
         return true;
     }
+
+    /**
+     * Sends an e-mail notification to an album's moderators that a comment is available to moderate.
+     * @param Album $album
+     * @param Photo $photo
+     * @param PhotoComment $comment
+     */
+    private function notifyAlbumModerators(Album $album, Photo $photo, PhotoComment $comment)
+    {
+        // Get all users from the cache
+        $helper = new PermissionsHelper();
+        $moderators = $helper->usersWhoCan_Album($album, 'moderate-comments');
+
+        /** @var User $moderator */
+        foreach ($moderators as $moderator)
+        {
+            Mail::to($moderator)->send(new ModeratePhotoComment($moderator, $album, $photo, $comment));
+        }
+
+        dd($moderators);
+    }
 }

app/Mail/ModeratePhotoComment.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace App\Mail;
+
+use App\Album;
+use App\Facade\Theme;
+use App\Facade\UserConfig;
+use App\Photo;
+use App\PhotoComment;
+use App\User;
+use Illuminate\Bus\Queueable;
+use Illuminate\Mail\Mailable;
+use Illuminate\Queue\SerializesModels;
+use Illuminate\Contracts\Queue\ShouldQueue;
+
+class ModeratePhotoComment extends Mailable
+{
+    use Queueable, SerializesModels;
+
+    private $album;
+    private $comment;
+    private $photo;
+    private $user;
+
+    /**
+     * Create a new message instance.
+     *
+     * @return void
+     */
+    public function __construct(User $user, Album $album, Photo $photo, PhotoComment $comment)
+    {
+        $this->user = $user;
+    }
+
+    /**
+     * Build the message.
+     *
+     * @return $this
+     */
+    public function build()
+    {
+        $subject = trans('email.change_email_required_subject', ['app_name' => UserConfig::get('app_name')]);
+
+        return $this
+            ->subject($subject)
+            ->markdown(Theme::viewName('email.user_change_email_required'))
+            ->with([
+                'subject' => $subject,
+                'user' => $this->user
+            ]);
+    }
+}