<?php

namespace App\Http\Controllers\Admin;

use App\Album;
use App\AlbumSources\IAlbumSource;
use App\Facade\Image;
use App\Facade\Theme;
use App\Helpers\ImageHelper;
use App\Helpers\MiscHelper;
use App\Photo;
use App\Services\PhotoService;
use App\Upload;
use App\UploadPhoto;
use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use Illuminate\Http\UploadedFile;
use Illuminate\Support\Facades\App;
use Illuminate\Support\Facades\Auth;
use Symfony\Component\Finder\Iterator\RecursiveDirectoryIterator;
use Symfony\Component\HttpFoundation\File\File;

class PhotoController extends Controller
{
    public function analyse($photoId)
    {
        $this->authorize('admin-access');

        /** @var Photo $photo */
        $photo = Photo::where('id', intval($photoId))->first();
        if (is_null($photo))
        {
            App::abort(404);
            return null;
        }

        $result = ['is_successful' => false, 'message' => ''];

        try
        {
            $photoService = new PhotoService($photo);
            $photoService->analyse();

            $result['is_successful'] = true;
        }
        catch (\Exception $ex)
        {
            $result['is_successful'] = false;
            $result['message'] = $ex->getMessage();

            // Remove the photo if it cannot be analysed
            $photo->delete();
        }

        return response()->json($result);
    }

    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        //
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
        //
    }

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

        /** @var Photo $photo */
        $photo = Photo::where('id', intval($id))->first();
        if (is_null($photo))
        {
            App::abort(404);
            return null;
        }

        $photoService = new PhotoService($photo);
        $photoService->delete();

        return back();
    }

    public function regenerateThumbnails($photoId)
    {
        $this->authorize('admin-access');

        /** @var Photo $photo */
        $photo = Photo::where('id', intval($photoId))->first();
        if (is_null($photo))
        {
            App::abort(404);
            return null;
        }

        $result = ['is_successful' => false, 'message' => ''];

        try
        {
            $photoService = new PhotoService($photo);
            $photoService->regenerateThumbnails();

            $result['is_successful'] = true;
        }
        catch (\Exception $ex)
        {
            $result['is_successful'] = false;
            $result['message'] = $ex->getMessage();
        }

        return response()->json($result);
    }

    public function rotate($photoId, $angle)
    {
        $this->authorize('admin-access');

        $photo = Photo::where('id', intval($photoId))->first();
        if (is_null($photo))
        {
            App::abort(404);
            return null;
        }

        if ($angle != 90 && $angle != 180 && $angle != 270)
        {
            App::aport(400);
            return null;
        }

        $photoService = new PhotoService($photo);
        $photoService->rotate($angle);
    }

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

        $photoFiles = $request->files->get('photo');

        // Load the linked album
        $album = $this->loadAlbum($request->get('album_id'));

        foreach ($photoFiles as $photoFile)
        {
            $photoFile = UploadedFile::createFromBase($photoFile);

            /** @var File $savedFile */
            $savedFile = $album->getAlbumSource()->saveUploadedPhoto($photoFile);

            $photo = new Photo();
            $photo->album_id = $album->id;
            $photo->user_id = Auth::user()->id;
            $photo->name = pathinfo($photoFile->getClientOriginalName(), PATHINFO_FILENAME);
            $photo->file_name = $photoFile->getClientOriginalName();
            $photo->storage_file_name = $savedFile->getFilename();
            $photo->mime_type = $savedFile->getMimeType();
            $photo->file_size = $savedFile->getSize();
            $photo->is_analysed = false;
            $photo->save();
        }

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

    public function storeBulk(Request $request)
    {
        $this->authorize('admin-access');

        $archiveFile = UploadedFile::createFromBase($request->files->get('archive'));

        // Load the linked album
        $album = $this->loadAlbum($request->get('album_id'));

        // Create a temporary folder to hold the extracted files
        $tempFolder = sprintf('%s/btw_upload_%s', env('TEMP_FOLDER', '/tmp'), MiscHelper::randomString());
        mkdir($tempFolder);

        $mimeType = strtolower($archiveFile->getMimeType());
        switch ($mimeType)
        {
            case 'application/zip':
                $zip = new \ZipArchive();
                $zip->open($archiveFile->getPathname());
                $zip->extractTo($tempFolder);
                $zip->close();
                break;

            default:
                $request->session()->flash('error', sprintf('The file type "%s" is not supported for bulk uploads.', $mimeType));
                return redirect(route('albums.show', ['id' => $album->id]));
        }

        $di = new \RecursiveDirectoryIterator($tempFolder, \RecursiveDirectoryIterator::SKIP_DOTS);
        $recursive = new \RecursiveIteratorIterator($di);

        /** @var \SplFileInfo $fileInfo */
        foreach ($recursive as $fileInfo)
        {
            if ($fileInfo->isDir())
            {
                if ($fileInfo->getFilename() == '__MACOSX' || substr($fileInfo->getFilename(), 0, 1) == '.')
                {
                    @rmdir($fileInfo->getPathname());
                }

                continue;
            }

            $result = getimagesize($fileInfo->getPathname());
            if ($result === false)
            {
                // Not an image file - skip
                @unlink($fileInfo->getPathname());
                continue;
            }

            $photoFile = new File($fileInfo->getPathname());

            /** @var File $savedFile */
            $savedFile = $album->getAlbumSource()->saveUploadedPhoto($photoFile);

            $photo = new Photo();
            $photo->album_id = $album->id;
            $photo->user_id = Auth::user()->id;
            $photo->name = pathinfo($photoFile->getFilename(), PATHINFO_FILENAME);
            $photo->file_name = $photoFile->getFilename();
            $photo->storage_file_name = $savedFile->getFilename();
            $photo->mime_type = $savedFile->getMimeType();
            $photo->file_size = $savedFile->getSize();
            $photo->is_analysed = false;
            $photo->save();
        }

        @rmdir($tempFolder);

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

    /**
     * Display the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function show($id)
    {
        //
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function edit($id)
    {
        //
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, $id)
    {
        //
    }

    public function updateBulk(Request $request, $albumId)
    {
        $photos = $request->get('photo');

        /** @var Album $album */
        $album = Album::where('id', intval($albumId))->first();

        if (is_null($album))
        {
            App::abort(404);
            return null;
        }

        foreach ($photos as $photoId => $value)
        {
            /** @var Photo $photo */
            $photo = $album->photos()->where('id', intval($photoId))->first();
            if (is_null($photo))
            {
                continue;
            }

            $photo->fill($value);
            $photo->save();
        }

        return redirect(route('albums.show', array('id' => $albumId)));
    }

    /**
     * @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;
    }
}