<?php


namespace App\Komma\Html5Upload;

use App\Komma\Documents\Kms\DocumentServiceInterface;
use App\Komma\Documents\Models\Document;
use App\Komma\Kms\Core\Attributes\Models\ImageProperty;
use Illuminate\Http\Request;
use Illuminate\Http\UploadedFile;
use Illuminate\Routing\Controller;
use Illuminate\Support\Facades\Log;
use Symfony\Component\HttpFoundation\FileBag;

final class HTML5UploadApiController extends Controller
{
    /** @var DocumentServiceInterface */
    private $documentService;

    public function __construct()
    {
        $this->documentService = app(DocumentServiceInterface::class);
    }

    /**
     * This method is used to upload files viaHTML 5 formdata uploads via ajax request
     * Creates HTML5UploadTrackerModel instances for each uploaded file from the request.
     * And then returns an array where the keys are HTML
     *
     * @param Request $request
     * @return array
     */
    function uploadedFile(Request $request) {
        //Validate that is ajax request
        if(!$request->ajax()) abort(400, 'This url should only be accessed via ajax requests. Set the X-Requested-With header and make sure you are POSTing to this url');

        //Get the files from the request
        /** @var FileBag $files */
        $files = $request->file();

        //Check that we received files. Else log a warning.
        if(count($files) === 0) {
            $message = 'HTML5UploadApiController: I suspect a too big file was uploaded since i did not get any. Please check php.ini\'s upload_max_filesize and post_max_size variables or manage them in your .htaccess / .webconfig. '.
                'Also prevent calling the route that hits this controller method when the total amount of files exceeds those variables.';
            Log::warning($message);
            abort(400, $message);
        }

        //Check that there is an extraData field containing information about where to store the uploaded file and with which image properties
        $extraData = $request->input('extraData');
        if(!$extraData) abort(400, 'expected a formdata field with the name of extraData, containing a json object with information about image properties and the upload folder');
        $extraDataArray = json_decode($extraData, true);
        if(!isset($extraDataArray['imageProperties']) || !isset($extraDataArray['subFolder'])) abort(400, 'expected a formdata field with the name of extraData, containing a json object with information about image properties and the upload folder');

        //Use extraData to get ImageProperty instances
        $imagePropertiesAsArray = array_map(function($imagePropertyAsArray) {
            return ImageProperty::fromArray($imagePropertyAsArray);
        }, json_decode($extraDataArray['imageProperties'], true));

        $documents = collect();
        foreach($files as $file) {
            /** @var UploadedFile $file */
            $documents->push($this->documentService->storeHtml5Upload($file, $extraDataArray['subFolder'], $imagePropertiesAsArray));
        }

        return $documents->mapWithKeys(function (Document $document) {
            return $document->toArray();
        })->toArray();
    }
}