<?php

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

class AlipayTradeService extends CI_Controller
{
    //支付宝网关地址
    public $gateway_url = "https://openapi.alipay.com/gateway.do";

    //支付宝公钥
    public $alipay_public_key;

    //商户私钥
    public $private_key;

    //应用id
    public $appid;

    //UID
    public $seller_id;

    //编码格式
    public $charset = "UTF-8";

    public $token = NULL;

    //返回数据格式
    public $format = "json";

    //签名方式
    public $signtype = "RSA2";

    // cht
    public function __construct(){
        parent::__construct();
        $this->load->library('alipay/AopSdk');
        // real URL
        // $this->config->load('alipay');
        // test URL
        $this->config->load('dev_alipay');

        $this->load->model('AlipayTradePagePayContentBuilder');
        $this->load->model('AlipayTradeQueryContentBuilder');

        $this->gateway_url       = $this->config->item('gatewayUrl');
        $this->appid             = $this->config->item('app_id');
        $this->seller_id         = $this->config->item('seller_id');
        $this->private_key       = $this->config->item('merchant_private_key');
        $this->alipay_public_key = $this->config->item('alipay_public_key');
        $this->charset           = $this->config->item('charset');
        $this->signtype          = $this->config->item('sign_type');

        if(empty($this->appid)||trim($this->appid)==""){
            throw new Exception("appid should not be NULL!");
        }
        if(empty($this->private_key)||trim($this->private_key)==""){
            throw new Exception("private_key should not be NULL!");
        }
        if(empty($this->alipay_public_key)||trim($this->alipay_public_key)==""){
            throw new Exception("alipay_public_key should not be NULL!");
        }
        if(empty($this->charset)||trim($this->charset)==""){
            throw new Exception("charset should not be NULL!");
        }
        if(empty($this->gateway_url)||trim($this->gateway_url)==""){
            throw new Exception("gateway_url should not be NULL!");
        }

    }

    // cht
    public function pay_fun()
    {
        //商户订单号，商户网站订单系统中唯一订单号，必填
        $out_trade_no = trim($this->input->get_post('out_trade_no'));

        //订单名称，必填
        $subject = trim($this->input->get_post('subject'));

        //付款金额，必填
        $total_amount = trim($this->input->get_post('total_amount'));

        //商品描述，可空
        $body = trim($this->input->get_post('body'));

        $this->AlipayTradePagePayContentBuilder->setBody($body);
        $this->AlipayTradePagePayContentBuilder->setSubject($subject);
        $this->AlipayTradePagePayContentBuilder->setTotalAmount($total_amount);
        $this->AlipayTradePagePayContentBuilder->setOutTradeNo($out_trade_no);
        $url = $this->pagePay(
            $this->AlipayTradePagePayContentBuilder,
            $this->config->item('return_url'),
            $this->config->item('notify_url'));
        return;
    }

    /**
     * alipay.trade.page.pay
     * @param $builder 业务参数，使用buildmodel中的对象生成。
     * @param $return_url 同步跳转地址，公网可以访问
     * @param $notify_url 异步通知地址，公网可以访问
     * @return $response 支付宝返回的信息
    */
    function pagePay($builder,$return_url,$notify_url) {

        $biz_content=$builder->getBizContent();
        //打印业务参数 cht
        log_message('error',"\r\n"." Begin \r\n".$biz_content);

        $request = new AlipayTradePagePayRequest();

        $request->setNotifyUrl($notify_url);
        $request->setReturnUrl($return_url);
        $request->setBizContent ( $biz_content );

        // 首先调用支付api
        $response = $this->aopclientRequestExecute ($request,true);
        return $response;
    }

    /**
     * sdkClient
     * @param $request 接口请求参数对象。
     * @param $ispage  是否是页面接口，电脑网站支付是页面表单接口。
     * @return $response 支付宝返回的信息
    */
    function aopclientRequestExecute($request,$ispage=false) {

        $aop = new AopClient ();
        $aop->gatewayUrl = $this->gateway_url;
        $aop->appId = $this->appid;
        $aop->rsaPrivateKey =  $this->private_key;
        $aop->alipayrsaPublicKey = $this->alipay_public_key;
        $aop->apiVersion ="1.0";
        $aop->postCharset = $this->charset;
        $aop->format= $this->format;
        $aop->signType=$this->signtype;
        // 开启页面信息输出
        $aop->debugInfo=true;
        $result = null;
        if($ispage)
        {
            $result = $aop->pageExecute($request,"post");
            echo $result;
        }
        else
        {
            $result = $aop->Execute($request);
        }

        //打开后，将报文写入log文件 cht
        log_message('error',"\r\n\r\nResponse: \r\n".var_export($result,true));
        return $result;
    }

    /**
     * alipay.trade.query (统一收单线下交易查询)
     * @param $builder 业务参数，使用buildmodel中的对象生成。
     * @return $response 支付宝返回的信息
    */
    function Query($builder){
        $biz_content=$builder->getBizContent();
        //打印业务参数
        $request = new AlipayTradeQueryRequest();
        $request->setBizContent ( $biz_content );

        $response = $this->aopclientRequestExecute ($request);
        $response = $response->alipay_trade_query_response;
        return $response;
    }

    /**
     * 验签方法
     * @param $arr 验签支付宝返回的信息，使用支付宝公钥。
     * @return boolean
     */
    function check($arr){
        $aop = new AopClient();
        $aop->alipayrsaPublicKey = $this->alipay_public_key;
        $result = $aop->rsaCheckV1($arr, $this->alipay_public_key, $this->signtype);
        if ($result === false) {
            return $result;
        }

        // cht
        // 1.app_id
        // 2.seller_id
        // 3.查询数据库,验证订单信息,订单号
        // 4.订单金额
        $verify_ret = true;
        if ($arr['app_id'] !== $this->appid) {
            $verify_ret = false;
        }
        if ($arr['seller_id'] !== $this->seller_id) {
            $verify_ret = false;
        }
        log_message('error',"\r\n\r\n Check result: ".$result);
        return $verify_ret;
    }

    // cht
    function return_url()
    {
        $arr    = $this->input->get();
        $result = $this->check($arr);
        if ($result) {
            $this->load->view("iPayLinks_rep",array("code"=>0,"msg"=>""));
            // echo "付款成功!支付宝交易号：".$arr["trade_no"];
        } else {
            echo "付款失败!";
        }
        return;
    }

    // cht
    function notify_url()
    {
        $arr    = $this->input->post();
        $result = $this->check($arr);
        log_message('error',"\r\n\r\n Notify:\r\n".var_export($arr,true));
        if ($result) {
            /*!
             * Do NOT touch
             * 不要改这里,必须返回这5个字符
             */
            echo "success";
        } else {
            echo "fail";
        }
        return;
    }

}