Pony.fm/app/Http/Controllers/Api/Web/FavouritesController.php

<?php

namespace Api\Web;

use App\Album;
use App\Commands\ToggleFavouriteCommand;
use App\Favourite;
use App\Playlist;
use App\Track;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Input;
use Illuminate\Support\Facades\Response;

class FavouritesController extends \ApiControllerBase
{
    public function postToggle()
    {
        return $this->execute(new ToggleFavouriteCommand(Input::get('type'), Input::get('id')));
    }

    public function getTracks()
    {
        $query = Favourite
            ::whereUserId(Auth::user()->id)
            ->whereNotNull('track_id')
            ->with([
                'track' => function ($query) {
                    $query
                        ->userDetails()
                        ->published();
                },
                'track.user',
                'track.genre',
                'track.cover',
                'track.album',
                'track.album.user'
            ]);

        $tracks = [];

        foreach ($query->get() as $fav) {
            if ($fav->track == null) // deleted track
            {
                continue;
            }

            $tracks[] = Track::mapPublicTrackSummary($fav->track);
        }

        return Response::json(["tracks" => $tracks], 200);
    }

    public function getAlbums()
    {
        $query = Favourite
            ::whereUserId(Auth::user()->id)
            ->whereNotNull('album_id')
            ->with([
                'album' => function ($query) {
                    $query->userDetails();
                },
                'album.user',
                'album.user.avatar',
                'album.cover'
            ]);

        $albums = [];

        foreach ($query->get() as $fav) {
            if ($fav->album == null) // deleted album
            {
                continue;
            }

            $albums[] = Album::mapPublicAlbumSummary($fav->album);
        }

        return Response::json(["albums" => $albums], 200);
    }

    public function getPlaylists()
    {
        $query = Favourite
            ::whereUserId(Auth::user()->id)
            ->whereNotNull('playlist_id')
            ->with([
                'playlist' => function ($query) {
                    $query->userDetails();
                },
                'playlist.user',
                'playlist.user.avatar',
                'playlist.tracks',
                'playlist.tracks.cover'
            ]);

        $playlists = [];

        foreach ($query->get() as $fav) {
            if ($fav->playlist == null) // deleted playlist
            {
                continue;
            }

            $playlists[] = Playlist::mapPublicPlaylistSummary($fav->playlist);
        }

        return Response::json(["playlists" => $playlists], 200);
    }
}