<?php
require_once "../public/function.php";

function do_sync($param){

	if(isset($_GET["op"])){
		$op=$_GET["op"];
	}
	else if(isset($_POST["op"])){
		$op=$_POST["op"];
	}
	else{
		echo "error: no op";
		return(false);
	}

	$PDO = new PDO("sqlite:".$param->database, "", "",array(PDO::ATTR_PERSISTENT=>true));
	$PDO->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING);

	switch($op){
		case "sync":
		{
			$time=$_POST["time"];
			$query = "select {$param->uuid} as guid, {$param->modify_time} from {$param->table}  where {$param->receive_time} > '{$time}' limit 0,10000";
			$stmt = $PDO->query($query);
			$Fetch = $stmt->fetchAll(PDO::FETCH_ASSOC);
			$iFetch=count($Fetch);
			echo(json_encode($Fetch, JSON_UNESCAPED_UNICODE));
			break;
		}
		case "get":
		{
			if(isset($_GET["id"])){
				$id=$_GET["id"];
			}
			else if(isset($_POST["id"])){
				$id=$_POST["id"];
			}
			else{
				return(false);
			}
			$arrId = json_decode($id);
			$queryId="('";
			foreach($arrId as $one){
				$queryId .= $one."','";
			}
			$queryId = substr($queryId,0,-2).")";
			$query = "SELECT * FROM {$param->table} WHERE {$param->uuid} in {$queryId}";

			$stmt = $PDO->query($query);
			$Fetch = $stmt->fetchAll(PDO::FETCH_ASSOC);
			echo( json_encode($Fetch,JSON_UNESCAPED_UNICODE));
			return(TRUE);
			break;
		}
		case "insert":
		{
			echo "正在准备插入记录<br>";
			if(isset($_POST["data"])){
				$data=$_POST["data"];
			}
			else{
				echo "没有数据<br>";
				return(FALSE);
			}

			// 开始一个事务，关闭自动提交

			$PDO->beginTransaction();
			$query = "INSERT INTO {$param->table} (";
			foreach($param->insert as $row){
				$query .= "'".$row."',";
			}
			$query .= "'receive_time') VALUES ( ";
			for($i=0;$i<count($param->insert);$i++){
				$query .= " ?, ";
			}
			$query .= " ? )";

			$arrData = json_decode($data,TRUE);			
			$stmt = $PDO->prepare($query);
			foreach($arrData as $oneParam){
				$newRow=array();
				foreach($param->insert as $row){
					$newRow[]=$oneParam["{$row}"];
				}
				$newRow[]=mTime();
				
				$stmt->execute($newRow);
			}
			// 提交更改 
			$PDO->commit();
			if (!$stmt || ($stmt && $stmt->errorCode() != 0)) {
				$error = $PDO->errorInfo();
				echo "error - $error[2] <br>";
				return(FALSE);
			}
			else{
				$count=count($arrData);
				echo "INSERT $count recorders."."<br>";
				return(TRUE);
			}
			break;
		}
		case "update":
		{
			echo "更在准备更新数据<br>";
			if(isset($_POST["data"])){
				$data=$_POST["data"];
			}
			else{
				echo "没有输入数据<br>";
				return(FALSE);
			}
			$arrData = json_decode($data,TRUE);
            $query = "UPDATE {$param->table} SET ";
            foreach($param->update as $row){
                $query .= "{$row} = ? ,";
            }
            $query .= "{$param->receive_time} = ?  where {$param->uuid} = ? ";
            $stmt = $PDO->prepare($query);
			// 开始一个事务，关闭自动提交
			try{
				$PDO->beginTransaction();
				foreach($arrData as $one){

					$newRow = array();
					foreach($param->update as $row){
						$newRow[] = $one["{$row}"];
					}
					$newRow[] = mTime();
                    $newRow[] = $one["{$param->uuid}"];
					$stmt->execute($newRow);
				}
				// 提交更改 
                $PDO->commit();
                if (!$stmt || ($stmt && $stmt->errorCode() != 0)) {
                    $error = $PDO->errorInfo();
                    echo "error - $error[2] <br>";
                    return(FALSE);
                }
                else{
                    $count=count($arrData);
                    echo "INSERT $count recorders."."<br>";
                    return(TRUE);
                }
			}
			catch(Exception $e){
				$PDO->rollback();
				echo "Failed:".$e->getMessage()."<br>";		
				return(FALSE);		
			}
			
			break;
		}
		default:
		break;
	}

}

?>