<?php
require_once('log.inc.php');

class PhotoLogAPI extends WebAPI {
	private $operationPemission = "admin";

	function __construct() {
		parent::__construct(SZ_WEBAPI_API_DESCRIPTION_PATH);
	}

	protected function Process()
	{
		if (!strcasecmp($this->method, "list")) {
			$this->LogList();
		} else if (!strcasecmp($this->method, "clear")) {
			$this->Clear();
		} else if (!strcasecmp($this->method, "export")) {
			$this->Export();
		}
	}

	private function LogList()
	{
		$resp = array();

		$params = $this->GetParams_List();
		if (!$params) {
			$this->SetError(WEBAPI_ERR_BAD_REQUEST);
			goto End;
		}

		$res = PhotoLog::ListItem($params['offset'], $params['limit']);

		$resp['items'] = $res['data'];
		$resp['total'] = $res['total'];
        $offset = (0 > (int)$params['limit']) ? $resp['total'] : $params['offset'] + $params['limit'];
        $resp['offset'] = ($offset > $resp['total']) ?  $resp['total'] : $offset;

		$this->SetResponse($resp);
	End:
		return;
	}

	private function Clear()
	{
		$params = $this->GetParams_Clear();
		if (!$params) {
			$this->SetError(WEBAPI_ERR_BAD_REQUEST);
			goto End;
		}

		PhotoLog::Clear($params['user']);

	End:
		return;
	}

	private function Export()
	{
		$params = $this->GetParams_Export();
		if (!$params) {
			$this->SetError(WEBAPI_ERR_BAD_REQUEST);
			goto End;
		}

		PhotoLog::ExportFile($params['format']);

	End:
		return;
	}

	private function GetParams_List()
	{
		// $variable + 0 => convert to integer
		$params = array(
			'offset' => !isset($_REQUEST['offset']) || $_REQUEST['offset'] < 0 ? 0 : $_REQUEST['offset'] + 0,
			'limit' => !isset($_REQUEST['limit']) || $_REQUEST['limit'] < 0 ? NULL : $_REQUEST['limit'] + 0
		);
		return $params;
	}

	private function GetParams_Export()
	{
		$format = strtolower($_REQUEST['format']);
		if (!in_array($format, PhotoLog::$SupportFormat)) {
			return false;
		}

		return array("format" => $format);
	}

	private function GetParams_Clear()
	{
		$user = $this->GetUser();

		if (!$user) {
			return false;
		}

		return array("user" => $user);
	}

	private function GetUser()
	{
		$user = false;

		if (isset($_SESSION[SYNOPHOTO_ADMIN_USER]['reg_syno_user'])) {
			$user = $_SESSION[SYNOPHOTO_ADMIN_USER]['reg_syno_user'];
		} else if (isset($_SESSION[SYNOPHOTO_ADMIN_USER]['admin_syno_user'])) {
			$user = ("root" === SYNOPHOTO_ADMIN_USER)? "admin" : SYNOPHOTO_ADMIN_NAME;
		}
		return $user;
	}

	protected function CheckPermission()
	{
		$res = true;
		$check = array(
			"list" => $this->operationPemission,
			"clear" => $this->operationPemission,
			"export" => $this->operationPemission
		);

		if (!array_key_exists($this->method, $check)) {
			goto End;
		}

		$funcName = "check_".$check[$this->method];

		if (!method_exists($this, $funcName)) {
			$res = false;
			goto End;
		}

		$res = $this->$funcName();

	End:
		if (!$res) {
			$this->SetError(PHOTOSTATION_LOG_ACCESS_DENY);
		}
		return $res;
	}

	private function check_admin()
	{
		csSYNOPhotoDB::GetDBInstance()->SetSessionCache();
		csSYNOPhotoMisc::CheckSessionTimeOut();
		return isset($_SESSION[SYNOPHOTO_ADMIN_USER]['admin_syno_user']);
	}
}
$api = new PhotoLogAPI();
$api->Run();

?>