<?php
//Author:fuhc
//Date:20160906
//连接数据库

//require_once __DIR__.'../config.inc';
require_once __DIR__ . "/../Conf/Config.inc";
require_once __DIR__ . '/Function.php';

//全局PDO在DBUtil.php中
//连接数据库工具类
class DB
{
    public $my_port;
    public $my_host;
    public $my_dbname;
    public $my_user;
    public $my_pwd;
    public $my_pdo;

    static $_instance;
    //存储对象
    //	function __construct($type){
    //		$this->my_port.=$type.$this->my_port;
    //		$this->my_host=$type.$this->my_host;
    //		$this->my_dbname=$dbname;
    //		$this->my_user=$user;
    //		$this->my_pwd=$pwd;
    //	}
    /**
     * 构造函数
     * 私有
     */
    private function __construct()
    {
        $this->my_dbname = TRUE_CONN_DB;
        $this->my_port = TRUE_CONN_PORT;
        $this->my_host = TRUE_CONN_HOST;
        $this->my_user = TRUE_CONN_USER;
        $this->my_pwd = TRUE_CONN_PASSWORD;


//        if (CONN_DB_NAME == CSTEST_MYSQL_DB) {
//            $this->my_port = CSTEST_MYSQL_PORT;
//            $this->my_host = CSTEST_MYSQL_HOST;
//            $this->my_dbname = CSTEST_MYSQL_DB;
//            $this->my_user = CSTEST_MYSQL_USER;
//            $this->my_pwd = CSTEST_MYSQL_PASSWORD;
//        } else if (CONN_DB_NAME == CS_MYSQL_DB) {
//            $this->my_port = CS_MYSQL_PORT;
//            $this->my_host = CS_MYSQL_HOST;
//            $this->my_dbname = CS_MYSQL_DB;
//            $this->my_user = CS_MYSQL_USER;
//            $this->my_pwd = CS_MYSQL_PASSWORD;
//        } else if (CONN_DB_NAME == WAICE_MYSQL_DB) {
//
//        }

        $port = $this->my_port ? $this->my_port : 3306;
        try {
            $this->my_pdo = new PDO("mysql:host=" . $this->my_host . ";port=" . $port . ";dbname=" . $this->my_dbname, $this->my_user, $this->my_pwd, array(PDO::MYSQL_ATTR_INIT_COMMAND => "set names utf8"));
        } catch (PDOException $e) {
            writeLog('new PDO failed:' . $e->getMessage());
        }
    }

    /**
     * 防止被克隆
     *
     */
    private function __clone()
    {
    }

    // single
    public static function getInstance()
    {
        if (FALSE == (self::$_instance instanceof self)) {

            self::$_instance = new self();
        }
        return self::$_instance;
    }

    // 关闭数据库
    function closeDB()
    {
        $this->my_pdo = null;
    }

    // 该类销毁时执行
    function __destruct()
    {
        $this->closeDB();
    }

    // 执行存储过程   返回值是多维数组 eg:  $data['rowset']=[[{name:"",age:"18"},{name:"",age:"18"}],[{res_id:"10",res_name:"xxx酒店"},{res_id:"10",res_name:"xxx酒店"}]];
    function execProcedure($sql)
    {
        $result = $this->my_pdo->query($sql);
        $data = array();
        $temp_data = array();
        $data['code'] = "0";
        $data['info'] = "";
        if (!$result) {
            $data['code'] = "2";
            $data['info'] = "系统异常";
        } else {
            do {
                $rowset = $result->fetchAll(PDO::FETCH_ASSOC);
                if ($rowset) {
                    $temp_data[] = $rowset;
                } else {
                    $temp_data[] = array();
                }
            } while ($result->nextRowset());
            $result->closeCursor();
            $data['rowset'] = $temp_data;
        }
        return $data;
    }

    function execProcedure2($sql)
    {
        $result = $this->my_pdo->query($sql);
        $data = array();
        $temp_data = array();
        $data['code'] = "0";
        $data['info'] = "";
        if (!$result) {
            $data['code'] = "2";
            $data['info'] = "系统异常";
        } else {
            do {
                $rowset = $result->fetchAll(PDO::FETCH_ASSOC);
                if ($rowset && !empty($rowset)) {
                    if (isset($rowset['errcode'])) {
                        $temp_data['code'] = $rowset['errcode'];
                        $temp_data['info'] = $rowset['errinfo'];
                    } elseif (isset($rowset[0])) {
                        $temp_data['code'] = $rowset[0]['errcode'];
                        $temp_data['info'] = $rowset[0]['errinfo'];
                    }
                } else {
                    $temp_data[] = array();
                }
            } while ($result->nextRowset());
            $result->closeCursor();
            $data = $temp_data;
        }
        return $data;

    }

    // 执行单行sql语句
    function queryBySql($sql)
    {
        $result = $this->my_pdo->query($sql);
        if (!$result) {
            $data['code'] = "1";
            $data['info'] = "系统异常";
            $data['rowset'] = array();
        } else {
            $rowset = $result->fetchAll(PDO::FETCH_ASSOC);
            $result->closeCursor();
            $data['code'] = "0";
            $data['info'] = "";
            $data['rowset'] = $rowset;
        }
        return $data;
    }

    // 执行单条增删改sql语句
    function execSql($sql)
    {
        $result = $this->my_pdo->exec($sql);
        if ($result === false) {
            $data['code'] = "1";
            $data['info'] = "sql error";
        } else {
//			$result -> closeCursor();   --修改貌似不需要
            $data['code'] = "0";
            $data['info'] = "";
        }
        return $data;
    }

    // 执行增删改多条sql语句
    function execSqlArr($sqlArr)
    {
        $data = array();
        $data['code'] = "0";
        $data['info'] = "";
        try {
            $this->my_pdo->beginTransaction();
            foreach ($sqlArr as $v) {
                $data = $this->execSql($v);
                if ($data['code'] != "0") {
                    throw new PDOException("事务异常");
                }
            }
            $this->my_pdo->commit();
        } catch (PDOException $ex) {
            $data['code'] = "17";
            $data['info'] = "事务异常";
            $this->my_pdo->rollBack();
        }
        return $data;
    }

}