public function exportToZip(MediaResource $resource, $data)
{
$files = [];
// get original file url
$url = $resource->getMedias()[0]->getUrl();
$originalFileFullPath = $this->container->getParameter('claroline.param.files_directory') . DIRECTORY_SEPARATOR . $url;
// ensure the name is clean
$cleanName = preg_replace('/[^A-Za-z0-9]/', '', $resource->getName());
// create temp_dir
$tempDir = $this->uploadDir . DIRECTORY_SEPARATOR . $cleanName . '_temp';
$fs = new Filesystem();
if (!$fs->exists($tempDir)) {
$fs->mkdir($tempDir);
}
// copy original file
// get original file extension
$ext = pathinfo($originalFileFullPath, PATHINFO_EXTENSION);
$fullFileName = $cleanName . '_full_file.' . $ext;
$copiedFilePath = $tempDir . DIRECTORY_SEPARATOR . $fullFileName;
// create srt file
$vttFile = $tempDir . DIRECTORY_SEPARATOR . $cleanName . '_SRT.vtt';
$fs->touch($vttFile);
$vtt = '';
// make a copy of the file
if (copy($originalFileFullPath, $copiedFilePath)) {
// create chuncked audio files in temp dir
$index = 1;
array_push($files, $copiedFilePath);
$vtt .= 'WEBVTT' . PHP_EOL;
foreach ($data as $region) {
$start = $region['start'];
$end = $region['end'];
$duration = $end - $start;
// create .vtt line
$vtt .= PHP_EOL;
$vtt .= $index . PHP_EOL;
$vtt .= $this->secondsToSrtTime($start) . ' --> ' . $this->secondsToSrtTime($end) . PHP_EOL;
if ($region['note'] !== '') {
$vtt .= strip_tags($region['note']);
}
$vtt .= PHP_EOL;
$partFilePath = $tempDir . DIRECTORY_SEPARATOR . $cleanName . '_part_' . $index . '.' . $ext;
$cmd = 'ffmpeg -i ' . $copiedFilePath . ' -ss ' . $start . ' -t ' . $duration . ' ' . $partFilePath;
exec($cmd, $output, $returnVar);
++$index;
// cmd success
if (count($output) === 0 && $returnVar === 0) {
array_push($files, $partFilePath);
} else {
// @TODO do something in case of cmd error
}
}
file_put_contents($vttFile, $vtt);
array_push($files, $vttFile);
}
$zipName = $cleanName . '.zip';
$archive = new \ZipArchive();
$pathToArchive = $tempDir . DIRECTORY_SEPARATOR . $zipName;
$archive->open($pathToArchive, \ZipArchive::CREATE);
foreach ($files as $f) {
$archive->addFromString(basename($f), file_get_contents($f));
}
$archive->close();
$fs->remove($files);
return ['zip' => $pathToArchive, 'name' => $zipName, 'tempFolder' => $tempDir];
}
