/**
* The post's sha
* Cached as post meta, or will make a live call if need be
*
* Returns String the sha1 hash
*/
public function sha()
{
$sha = get_post_meta($this->id, '_sha', true);
// If we've done a full export and we have no sha
// then we should try a live check to see if it exists.
if (!$sha && 'yes' === get_option('_wpghs_fully_exported')) {
// @todo could we eliminate this by calling down the full tree and searching it
$data = $this->api->fetch()->remote_contents($this);
if (!is_wp_error($data)) {
update_post_meta($this->id, '_sha', $data->sha);
$sha = $data->sha;
}
}
// if the sha still doesn't exist, then it's empty
if (!$sha || is_wp_error($sha)) {
$sha = '';
}
return $sha;
}
