<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

/**

 * alipy支付接口

 * @author onwulc@163.com

 *

 */

class Alipay extends CI_Controller {

    private $alipay_config;

    function __construct(){

        parent::__construct();

        $this->_init_config();

        $this->load->helper('url');

    }

    function index(){

        $this->load->view('alipay');//装载支付视图页面，post到do_alipay

    }

    function do_alipay(){

        require_once(APPPATH.'third_party/alipay/alipay_submit.class.php');

        //构造要请求的参数数组，无需改动

        $parameter = array(

            "service" => "create_direct_pay_by_user",

            "partner" => trim($this->alipay_config['partner']),

            "payment_type"    => '1',

            "notify_url"    => site_url('alipay/do_notify'),

            "return_url"    => site_url('alipay/do_return'),

            "seller_email"    => trim($this->alipay_config['seller_emaill']),//支付宝帐户,

            "out_trade_no"    => $this->input->post('WIDout_trade_no'),//商户订单号

            "subject"    => $this->input->post('WIDsubject'),//订单名称

            "total_fee"    => $this->input->post('WIDtotal_fee'),//必填,付款金额

            "body"    => $this->input->post('WIDbody'),//必填,订单描述

            "show_url"    => $this->input->post('WIDshow_url'),//商品展示地址

            "anti_phishing_key"    => '',//防钓鱼时间戳

            "exter_invoke_ip"    => '',//客户端的IP地址

            "_input_charset"    => trim(strtolower($this->alipay_config['input_charset']))

        );

        //建立请求

        $alipaySubmit = new AlipaySubmit($this->alipay_config);

        $html_text = $alipaySubmit->buildRequestForm($parameter,"get", "确认");

        echo $html_text;

    }

    function do_notify(){

        require_once(APPPATH.'third_party/alipay/alipay_notify.class.php');

    }

    function do_return(){

        require_once(APPPATH.'third_party/alipay/alipay_notify.class.php');

        $alipayNotify = new AlipayNotify($this->alipay_config);

        $verify_result = $alipayNotify->verifyReturn();

        //商户订单号

        $out_trade_no = $_GET['out_trade_no'];

        //支付宝交易号

        $trade_no = $_GET['trade_no'];

        //交易状态

        $trade_status = $_GET['trade_status'];

        if($_GET['trade_status'] == 'TRADE_FINISHED' || $_GET['trade_status'] == 'TRADE_SUCCESS') {

            //判断该笔订单是否在商户网站中已经做过处理

            //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序

            //如果有做过处理，不执行商户的业务程序

            echo '支付成功，交易处理环节';

        }else {

            echo "trade_status=".$_GET['trade_status'];

        }

        echo "验证成功<br />";

    }

    /**

     * 初始化支付宝配置，详细参数请根据自己实际接口修改

     */

    private function _init_config(){

        //支付宝帐户

        $alipay_config['seller_emaill'] = ''; 

        //合作身份者id，以2088开头的16位纯数字

        $alipay_config['partner'] = '2088999999999999';

        //安全检验码，以数字和字母组成的32位字符

        $alipay_config['key'] = 'vhyjvdht3ayxbtx692vlkbwilhXXXXXX';

        //签名方式 不需修改

        $alipay_config['sign_type'] = strtoupper('MD5');

        //字符编码格式 目前支持 gbk 或 utf-8

        $alipay_config['input_charset'] = strtolower('utf-8');

        //ca证书路径地址，用于curl中ssl校验

        //请保证cacert.pem文件在当前文件夹目录中

        $alipay_config['cacert'] = APPPATH.'third_party/alipay/cacert.pem';

        //访问模式,根据自己的服务器是否支持ssl访问，若支持请选择https；若不支持请选择http

        $alipay_config['transport'] = 'http';

        $this->alipay_config = $alipay_config;

    }

}