/**
* Handle an uploaded caption file and associate it with the specified video
*
* @global BC_Accounts $bc_accounts
*
* @param string $account_hash
* @param int $video_id
* @param array $raw_captions
*/
public function ajax_caption_upload($account_hash, $video_id, $raw_captions)
{
global $bc_accounts;
// Set up the account to which we're pushing data
$account = $bc_accounts->set_current_account($account_hash);
if (false === $account) {
$bc_accounts->restore_default_account();
return;
}
// Sanitize our passed data
$video_id = BC_Utility::sanitize_id($video_id);
$captions = array();
foreach ($raw_captions as $caption) {
// Validate required fields
if (!isset($caption['source']) || !isset($caption['language'])) {
continue;
}
$url = esc_url($caption['source']);
$lang = sanitize_text_field($caption['language']);
if (empty($url) || empty($lang)) {
continue;
// Attachment has no URL, fail
}
$label = isset($caption['label']) ? sanitize_text_field($caption['label']) : '';
$source = parse_url($caption['source']);
if (0 === strpos($source['host'], 'brightcove')) {
// If the hostname starts with "brightcove," assume this media has already been ingested
continue;
}
$captions[] = new BC_Text_Track($url, $lang, 'captions', $label);
}
if (empty($captions)) {
return;
// After sanitization, we have no valid captions
}
// Push the captions to Brightcove
$this->cms_api->text_track_upload($video_id, $captions);
// Restore our global, default account
$bc_accounts->restore_default_account();
}
