<?php

/**
 * Pony.fm - A community for pony fan music.
 * Copyright (C) 2016 Feld0
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

namespace Poniverse\Ponyfm\Http\Controllers\Api\Web;

use Auth;
use Illuminate\Support\Facades\Request;
use Poniverse\Ponyfm\Http\Controllers\ApiControllerBase;
use Poniverse\Ponyfm\Models\Notification;
use Poniverse\Ponyfm\Models\Subscription;
use Poniverse\Ponyfm\Models\Track;
use Poniverse\Ponyfm\Models\User;
use Minishlink\WebPush\WebPush;

class NotificationsController extends ApiControllerBase
{
    /**
     * Returns the logged-in user's last 20 notifications.
     *
     * @return array
     */
    public function getNotifications()
    {
        $notifications = Notification::forUser(Auth::user())
            ->take(20)
            ->get();

        $outputArray = $notifications->toArray();

        return ['notifications' => array_values(array_filter($outputArray))];
    }

    /**
     * This action returns the number of notifications that were updated.
     * Any notifications that were specified that don't belong to the logged-in
     * user are ignored.
     *
     * @return array
     */
    public function putMarkAsRead()
    {
        $notificationIds = Request::json('notification_ids');
        $numberOfUpdatedRows = Auth::user()
            ->notifications()
            ->whereIn('id', $notificationIds)
            ->update(['is_read' => true]);

        return ['notifications_updated' => $numberOfUpdatedRows];
    }

    /**
     * Subscribe a user to native push notifications. Takes an endpoint and
     * encryption keys from the client and stores them in the database
     * for future use.
     *
     * @return string
     */
    public function postSubscribe()
    {
        $input = json_decode(Request::json('subscription'));
        if ($input != 'null') {
            $existing = Subscription::where('endpoint', '=', $input->endpoint)
                ->where('user_id', '=', Auth::user()->id)
                ->first();

            if ($existing === null) {
                $subscription = Subscription::create([
                    'user_id' => Auth::user()->id,
                    'endpoint' => $input->endpoint,
                    'p256dh' => $input->keys->p256dh,
                    'auth' => $input->keys->auth
                ]);

                return ['id' => $subscription->id];
            } else {
                return ['id' => $existing->id];
            }
        } else {
            return ['error' => 'No data'];
        }
    }

    /**
     * Removes a user's notification subscription
     *
     * @return string
     */
    public function postUnsubscribe()
    {
        $input = json_decode(Request::json('subscription'));

        $existing = Subscription::where('endpoint', '=', $input->endpoint)
            ->where('user_id', '=', Auth::user()->id)
            ->delete();

        return ['result' => 'success'];
    }
}
