/**
* Return a list of modified themes since the last sync.
*
* Note:
* There's no point to store a themes counter since even if the number of
* themes didn't change, we still need to check if the versions are all the
* same and the activity state is similar.
*
* @author Vova Feldman (@svovaf)
* @since 1.1.8
*
* @return array|false
*/
private function get_themes_data_for_api()
{
// Alias.
$option_name = 'all_themes';
$all_cached_themes = self::$_accounts->get_option($option_name);
if (!is_object($all_cached_themes)) {
$all_cached_themes = (object) array('timestamp' => '', 'md5' => '', 'themes' => array());
}
$time = time();
if (!empty($all_cached_themes->timestamp) && $time - $all_cached_themes->timestamp < WP_FS__TIME_5_MIN_IN_SEC) {
// Don't send theme updates if last update was in the past 5 min.
return false;
}
// Write timestamp to lock the logic.
$all_cached_themes->timestamp = $time;
self::$_accounts->set_option($option_name, $all_cached_themes, true);
// Reload options from DB.
self::$_accounts->load(true);
$all_cached_themes = self::$_accounts->get_option($option_name);
if ($time != $all_cached_themes->timestamp) {
// If timestamp is different, then another thread captured the lock.
return false;
}
// Get active theme.
$active_theme = wp_get_theme();
$active_theme_stylesheet = $active_theme->get_stylesheet();
// Check if there's a change in themes.
$all_themes = wp_get_themes();
// Check if themes changed.
ksort($all_themes);
$themes_signature = '';
foreach ($all_themes as $slug => $data) {
$is_active = $slug === $active_theme_stylesheet;
$themes_signature .= $slug . ',' . $data->version . ',' . ($is_active ? '1' : '0') . ';';
}
// Check if themes status changed (version or active/inactive).
$themes_changed = $all_cached_themes->md5 !== md5($themes_signature);
$themes_update_data = array();
if ($themes_changed) {
// Change in themes, report changes.
// Update existing themes info.
foreach ($all_cached_themes->themes as $slug => $data) {
$is_active = $slug === $active_theme_stylesheet;
if (!isset($all_themes[$slug])) {
// Plugin uninstalled.
$uninstalled_theme_data = $data;
$uninstalled_theme_data['is_active'] = false;
$uninstalled_theme_data['is_uninstalled'] = true;
$themes_update_data[] = $uninstalled_theme_data;
unset($all_themes[$slug]);
unset($all_cached_themes->themes[$slug]);
} else {
if ($data['is_active'] !== $is_active || $data['version'] !== $all_themes[$slug]->version) {
// Plugin activated or deactivated, or version changed.
$all_cached_themes->themes[$slug]['is_active'] = $is_active;
$all_cached_themes->themes[$slug]['version'] = $all_themes[$slug]->version;
$themes_update_data[] = $all_cached_themes->themes[$slug];
}
}
}
// Find new themes that weren't yet seen before.
foreach ($all_themes as $slug => $data) {
if (!isset($all_cached_themes->themes[$slug])) {
$is_active = $slug === $active_theme_stylesheet;
// New plugin.
$new_plugin = array('slug' => $slug, 'version' => $data->version, 'title' => $data->name, 'is_active' => $is_active, 'is_uninstalled' => false);
$themes_update_data[] = $new_plugin;
$all_cached_themes->themes[$slug] = $new_plugin;
}
}
$all_cached_themes->md5 = md5($themes_signature);
$all_cached_themes->timestamp = time();
self::$_accounts->set_option($option_name, $all_cached_themes, true);
}
return $themes_update_data;
}