freakimkaefig/Music-XML-Analyzer

<?php

/**
 * Controller to handle uploads
 * Ability to transform timewise files to partwise files
 *
 * @package     Controllers
 */
class UploadController extends BaseController {

    /**
     * Function to handle POST request for file upload
     *
     * @return     \Illuminate\Http\JsonResponse     The JSON response code
     *
     */
    public function postUpload() {
        $user = User::find(Cookie::get('user_id'));
        $file = Input::file('file');
        if($file) {
            $destinationPath = public_path() . '/uploads/' . $user->id . '/';
            $filename = $file->getClientOriginalName();
            $filename = str_replace("Ä", "Ae", $filename);
            $filename = str_replace("ä", "ae", $filename);
            $filename = str_replace("Ö", "Oe", $filename);
            $filename = str_replace("ö", "oe", $filename);
            $filename = str_replace("Ü", "Ue", $filename);
            $filename = str_replace("ü", "ue", $filename);
            $filename = str_replace("ß", "ss", $filename);
            $filename = str_replace("á", "a", $filename);
            $filename = str_replace("à", "a", $filename);
            $filename = str_replace("â", "a", $filename);
            $filename = str_replace("é", "e", $filename);
            $filename = str_replace("è", "e", $filename);
            $filename = str_replace("ê", "e", $filename);
            $filename = str_replace("ó", "o", $filename);
            $filename = str_replace("ò", "o", $filename);
            $filename = str_replace("ô", "o", $filename);
            $filename = str_replace("í", "i", $filename);
            $filename = str_replace("ì", "i", $filename);
            $filename = str_replace("î", "i", $filename);
            $filename = preg_replace("/[^a-z0-9.]+/i", "_", $filename);
            $upload_success = Input::file('file')->move($destinationPath, $filename);

            if ($upload_success) {
                $url = URL::to('/uploads/') . '/' . $user->id . '/' . $filename;
                $this->_saveFile($user, $url);
                return Response::json('success', 200);
            } else {
                return Response::json('error', 400);
            }
        }
    }


    /**
     * Function to transform MusicXML files in format "score-timewise" to format "score partwise"
     *
     * @param     string             $url     The url of the file to transform
     *
     * @return     bool|string     False when operation fails, URL as string when operation succeeds
     *
     */
    private function xslTransform($url) {
        $simpleXml = simplexml_load_file($url);
        $timewise = $simpleXml->xpath("//score-timewise");
        if ($timewise) {
            $xslDoc = new DOMDocument();
            $xslDoc->load(URL::to("libs/timewise_to_partwise.xsl"));

            $xmlDoc = new DOMDocument();
            $xmlDoc->load($url);

            $userId = Cookie::get('user_id');
            $urlParts = explode('/', $url);
            $filename = end($urlParts);
            $path = public_path() . '\\uploads\\' . $userId . '\\' . $filename;

            $proc = new XSLTProcessor();
            $proc->importStylesheet($xslDoc);
            $transformation = $proc->transformToURI($xmlDoc, $path);
            if ($transformation) {
                return $url;
            } else {
                return false;
            }
        }
        return $url;
    }


    /**
     * Function to save files to database
     *
     * @param     \User     $user     The user as Eloquent Model
     * @param     string     $url     The file url
     *
     */
    private function _saveFile($user, $url) {
        $upload = new Upload;
        $upload->url = $this->xslTransform($url);
        $content = file_get_contents($upload->url);
        $upload->content = $content;
        $upload->user()->associate($user);
        $upload->save();
        $content2 = $upload->content;
        Log::info($content2);
    }


    /**
     * Function to trigger that the upload is complete
     *
     * @return     \Illuminate\Http\RedirectResponse     The redirect to trigger search
     *
     */
    public function getUploadComplete() {
        return Redirect::route('search');
    }

}