Add update info to serverinfo api call

Signed-off-by: Mathias Petermann <[email protected]>

Author: peschmae

lib/SystemStatistics.php

@@ -56,6 +56,11 @@ public function getSystemStatistics(): array {
 		$memoryUsage = $this->os->getMemory();
 		return [
 			'version' => $this->config->getSystemValue('version'),
+			'update' => [
+				'available' => count(json_decode($this->config->getAppValue('core', 'lastupdateResult'))) > 0 ? 'yes' : 'no',
+				'available_version' => json_decode($this->config->getAppValue('core', 'lastupdateResult'), true)['version'] ,
+				'lastupdatedat' => (int) $this->config->getAppValue('core', 'lastupdatedat'),
+			],
 			'theme' => $this->config->getSystemValue('theme', 'none'),
 			'enable_avatars' => $this->config->getSystemValue('enable_avatars', true) ? 'yes' : 'no',
 			'enable_previews' => $this->config->getSystemValue('enable_previews', true) ? 'yes' : 'no',