Get rid of Repository interfaces

src/Core/Notifications/NotificationRepository.php

@@ -0,0 +1,36 @@
+<?php namespace Flarum\Core\Notifications;
+
+use Flarum\Core\Users\User;
+
+class NotificationRepository
+{
+    /**
+     * Find a user's notifications.
+     *
+     * @param User $user
+     * @param int|null $limit
+     * @param int $offset
+     * @return \Illuminate\Database\Eloquent\Collection
+     */
+    public function findByUser(User $user, $limit = null, $offset = 0)
+    {
+        $primaries = Notification::select(
+            app('flarum.db')->raw('MAX(id) AS id'),
+            app('flarum.db')->raw('SUM(is_read = 0) AS unread_count')
+        )
+            ->where('user_id', $user->id)
+            ->whereIn('type', $user->getAlertableNotificationTypes())
+            ->where('is_deleted', false)
+            ->groupBy('type', 'subject_id')
+            ->latest('time')
+            ->skip($offset)
+            ->take($limit);
+
+        return Notification::with('subject')
+            ->select('notifications.*', 'p.unread_count')
+            ->mergeBindings($primaries->getQuery())
+            ->join(app('flarum.db')->raw('('.$primaries->toSql().') p'), 'notifications.id', '=', 'p.id')
+            ->latest('time')
+            ->get();
+    }
+}