/**
* Perform minimal validation on the settings form
*
* @param array $data Data to be validated
* @param array $files Files to be validated
*
* @return array
*/
public function validation($data, $files)
{
$errors = parent::validation($data, $files);
// If no errors have been detecting on subtitle
if (!isset($errors['subtitle'])) {
global $USER;
$fs = get_file_storage();
$context = context_user::instance($USER->id);
$files = $fs->get_area_files($context->id, 'user', 'draft', $data['subtitle'], 'id DESC', false);
$noerror = false;
// Loop on all files (normally only one)
foreach ($files as $file) {
// Save the file to a temporary path
try {
$filepath = $file->copy_content_to_temp();
} catch (\Exception $e) {
$errors['subtitle'] = get_string('subtitleunabletosave', 'elang');
break;
}
// Try to detect encoding
$config = get_config('elang');
if (isset($config->encodings)) {
$encodings = $config->encodings;
} else {
$encodings = null;
}
$contents = Elang\transcodeSubtitle(file_get_contents($filepath), 'UTF-8', $encodings);
if (false === $contents) {
// Automatic detection does not succeed
$errors['subtitle'] = get_string('subtitleunknownencoding', 'elang');
break;
} else {
// Encoding succeeds, put back encoded contents in file
file_put_contents($filepath, $contents);
// Detect vtt format
try {
$caption = new \Captioning\Format\WebvttFile($filepath);
$caption->setUseIconv(function_exists('mb_convert_encoding'));
$noerror = true;
break;
} catch (\Exception $e) {
}
// Detect subrip format
try {
$caption = new \Captioning\Format\SubripFile($filepath);
$caption->setUseIconv(function_exists('mb_convert_encoding'));
$noerror = true;
break;
} catch (\Exception $e) {
}
}
}
if ($noerror) {
// $noerror means automatic detection of encoding has been successfull and the file is in vtt or subrip format
$this->vtt = new \Captioning\Format\WebvttFile();
// Construct the cues in vtt format
$cues = $caption->getCues();
if ($cues) {
foreach ($cues as $cue) {
$this->vtt->addCue($cue->getText(), \Captioning\Format\WebvttCue::ms2tc($cue->getStartMS()), \Captioning\Format\WebvttCue::ms2tc($cue->getStopMS()));
}
}
} elseif (!isset($errors['subtitle'])) {
// File is not in vtt or subrip format
$errors['subtitle'] = get_string('subtitleinvalidformat', 'elang');
}
}
$jaro = str_replace(",", ".", $data['jaroDistance']);
if (!is_numeric($jaro) || $jaro <= 0 || $jaro > 1) {
$errors['jaroDistance'] = get_string('jaroDistance_error', 'elang');
}
return $errors;
}
