<?php
/**
 * SystemServices.API.php
 *
 * @package default
 */


class SystemServices {


	/**
	 *
	 * @return unknown
	 */
	function loadInst() {
		static $inst = null;

		if ($inst === null) {
			$inst = new self;
		}
		return $inst;
	}


	/**
	 *
	 * @return unknown
	 */
	function module_loaded() {
		self::API_Register();
		return true;
	}


	/**
	 *
	 */
	function API_Register() {

		apiql::register("!SYSTEM/!INSTALL/!PACKAGE[json]", "SystemServices::InstallPackage");
		apiql::register("!SYSTEM/!REMOVE/!PACKAGE[json]", "SystemServices::RemovePackage");
		apiql::register("!SYSTEM/!CLEAN/!PACKAGES", "SystemServices::CleanPackages");
		apiql::register("!SYSTEM/!GET/!INFO", "SystemServices::GetSystemInfo");

	}


	/**
	 *
	 * @return unknown
	 */
	function GetSystemInfo() {
		$state['linfo'] = new \Linfo\Linfo;
		$state['linfo_parser'] = $state['linfo']->getParser();

		$OSArray = parse_ini_file("/etc/os-release");
		$OverwatchVer = constant("OVERWATCH_VERSION");
		$KernelVer = $state['linfo_parser']->getKernel();
		$KernelArch = $state['linfo_parser']->getCPUArchitecture();
		$MemArray = $state['linfo_parser']->getRam();
		$CPU = $state['linfo_parser']->getCPU();
		$Sensors = $state['linfo_parser']->getTemps();
		$Devices = $state['linfo_parser']->getDevs();
		$Network = $state['linfo_parser']->getNet();
		$Battery = $state['linfo_parser']->getBattery();
		$Model = $state['linfo_parser']->getModel();
		$SysInfo = array('OS'=>$OSArray,
			'DaemonVersion'=>$OverwatchVer,
			'Kernel'=>$KernelVer,
			'CPUArch'=>$KernelArch,
			'RAM'=>$MemArray,
			'CPU'=>$CPU,
			'Sensors'=>$Sensors,
			'Devices'=>$Devices,
			'Network'=>$Network,
			'Battery'=>$Battery,
			'Model'=>$Model);
		$ResponseArray = array("response_type"=>"success",
			"response_content"=>$SysInfo,
			"response_code"=>200);
		return json_encode($ResponseArray);
	}


	function CleanPackages() {
		$process = new React\ChildProcess\Process('exec apt-get clean');
		$process->on('exit', function($exitCode, $termSignal) {
				global $clients;
				if ($exitCode > 0) {
					$ResponseArray = array("response_type"=>"error",
						"response_msg"=>"Package cache cleanup failed.",
						"apt_exit_code"=>$exitCode,
						"error_code"=>"APT_500C");

				} else {
					$ResponseArray = array("response_type"=>"success",
						"response_msg"=>"Package cache cleanup succeeded.",
						"apt_exit_code"=>$exitCode,
						"response_code"=>"APT_200C");
				}
				foreach ($clients as $client) {
					$client->write(json_encode($ResponseArray)."\r\n");
				}
				return json_encode($ResponseArray);
			});
		$process->start($loop);

	}


	function InstallPackage($sql) {
		global $loop;
		$Package = $sql['PACKAGE']['packages'];
		//$Reinstall = $sql['REINSTALL'];
		if (is_array($Package)) {
			foreach ($Package as $value)
			{
				if(empty($PackageLine))
				{
					$PackageLine = $value;
				} else {
					$PackageLine .= " ".$value;
				}

			}
		} else {
			$PackageLine = $Package;
		}
		$process = new React\ChildProcess\Process('exec apt-get -y install '.$PackageLine);
		$process->on('exit', function($exitCode, $termSignal) {
				global $clients;
				if($exitCode > 0)
				{
					$ResponseArray = array("response_type"=>"error",
						"response_msg"=>"Package installation failed.",
						"apt_exit_code"=>$exitCode,
						"error_code"=>"APT_500I");

				} else {
					$ResponseArray = array("response_type"=>"success",
						"response_msg"=>"Package installation succeeded.",
						"apt_exit_code"=>$exitCode,
						"response_code"=>"APT_200I");
				}
				foreach($clients as $client)
				{
					$client->write(json_encode($ResponseArray)."\r\n");
				}
				return json_encode($ResponseArray);
			});
		$process->start($loop);
	}


	function RemovePackage($sql)
	{
		global $loop;
		$Package = $sql['PACKAGE']['packages'];
		//$Reinstall = $sql['REINSTALL'];
		if(is_array($Package))
		{
			foreach($Package as $value)
			{
				if(empty($PackageLine))
				{
					$PackageLine = $value;
				} else {
					$PackageLine .= " ".$value;
				}

			}
		} else {
			$PackageLine = $Package;
		}
		$process = new React\ChildProcess\Process('exec apt-get -y remove '.$PackageLine);
		$process->on('exit', function($exitCode, $termSignal) {
				global $clients;
				if($exitCode > 0)
				{
					$ResponseArray = array("response_type"=>"error",
						"response_msg"=>"Package removal failed.",
						"apt_exit_code"=>$exitCode,
						"error_code"=>"APT_500R");

				} else {
					$ResponseArray = array("response_type"=>"success",
						"response_msg"=>"Package removal succeeded.",
						"apt_exit_code"=>$exitCode,
						"response_code"=>"APT_200R");
				}
				foreach($clients as $client)
				{
					$client->write(json_encode($ResponseArray)."\r\n");
				}
				return json_encode($ResponseArray);
			});
		$process->start($loop);
	}


}