<?php

namespace app\Http\Controllers\Admin;

use App\Album;
use App\Facade\Theme;
use App\Facade\UserConfig;
use App\Helpers\MiscHelper;
use App\Http\Controllers\Controller;
use App\Http\Requests;
use App\Photo;
use App\Services\PhotoService;
use App\Upload;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\App;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\DB;

class AlbumController extends Controller
{
    public function __construct()
    {
        $this->middleware('auth');
    }

    public function analyse($id)
    {
        $this->authorize('admin-access');

        $album = $this->loadAlbum($id);
        $photos = $album->photos()
            ->where('is_analysed', false)
            ->orderBy('created_at')
            ->get();

        return Theme::render('admin.analyse_album', ['album' => $album, 'photos' => $photos]);
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
        $this->authorize('admin-access');

        return Theme::render('admin.create_album');
    }

    public function delete($id)
    {
        $this->authorize('admin-access');

        $album = $this->loadAlbum($id);

        return Theme::render('admin.delete_album', ['album' => $album]);
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function destroy($id)
    {
        $this->authorize('admin-access');

        $album = $this->loadAlbum($id);

        // Delete all the photo files
        /** @var Photo $photo */
        foreach ($album->photos as $photo)
        {
            $photoService = new PhotoService($photo);
            $photoService->delete();
        }

        $album->getAlbumSource()->deleteAlbumContents();
        $album->delete();

        return redirect(route('albums.index'));
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function edit($id)
    {
        $this->authorize('admin-access');

        $album = $this->loadAlbum($id);

        return Theme::render('admin.edit_album', ['album' => $album]);
    }

    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        $this->authorize('admin-access');

        $albums = Album::orderBy('name')
            ->withCount('photos')
            ->paginate(UserConfig::get('items_per_page'));

        return Theme::render('admin.list_albums', [
            'albums' => $albums
        ]);
    }

    /**
     * Display the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function show(Request $request, $id)
    {
        $this->authorize('admin-access');

        $album = $this->loadAlbum($id);
        $photos = $album->photos()
            ->orderBy(DB::raw('COALESCE(taken_at, created_at)'))
            ->paginate(UserConfig::get('items_per_page_admin'));

        // See if we can upload (need the GD extension)
        $isUploadEnabled = extension_loaded('gd');
        $fileUploadLimit = MiscHelper::convertToBytes(ini_get('upload_max_filesize')) / (1024*1024);
        $postLimit = MiscHelper::convertToBytes(ini_get('post_max_size')) / (1024*1024);
        $fileUploadOrPostLowerLimit = ($postLimit < $fileUploadLimit) ? $postLimit : $fileUploadLimit;

        return Theme::render('admin.show_album', [
            'album' => $album,
            'bulk_actions' => [
                'rotate_left' => trans('admin.photo_actions.rotate_left'),
                'rotate_right' => trans('admin.photo_actions.rotate_right'),
                '-' => '-----',
                'refresh_thumbnails' => trans('admin.photo_actions.refresh_thumbnails'),
                'delete' => trans('admin.photo_actions.delete')
            ],
            'error' => $request->session()->get('error'),
            'file_upload_limit' => $fileUploadLimit,
            'is_upload_enabled' => $isUploadEnabled,
            'max_post_limit' => $postLimit,
            'max_post_limit_bulk' => $fileUploadOrPostLowerLimit,
            'photos' => $photos
        ]);
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Requests\StoreAlbumRequest $request)
    {
        $this->authorize('admin-access');

        $album = new Album();
        $album->fill($request->only(['name', 'description']));

        $album->is_private = (strtolower($request->get('is_private')) == 'on');
        $album->user_id = Auth::user()->id;

        $album->generateAlias();
        $album->save();

        return redirect(route('albums.show', ['id' => $album->id]));
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function update(Requests\StoreAlbumRequest $request, $id)
    {
        $this->authorize('admin-access');

        $album = $this->loadAlbum($id);
        $album->fill($request->only(['name', 'description']));
        $album->save();

        return Theme::render('admin.show_album', ['album' => $album]);
    }

    /**
     * @param $id
     * @return Album
     */
    private function loadAlbum($id)
    {
        $album = Album::where('id', intval($id))->first();
        if (is_null($album))
        {
            App::abort(404);
            return null;
        }

        return $album;
    }
}