Merge pull request #80 from 0i/2.0

Wechat Payment

src/Wechat/Payment.php

@@ -0,0 +1,98 @@
+<?php
+/**
+ * Payment.php
+ *
+ * Part of Overtrue\Wechat.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @author    Frye <frye0423@gmail.com>
+ * @copyright 2015 Frye <frye0423@gmail.com>
+ * @link      https://github.com/0i
+ * @link      http://blog.lost-magic.com
+ * @link      https://github.com/thenbsp/Wechat
+ */
+
+namespace Overtrue\Wechat;
+
+use Overtrue\Wechat\Utils\JSON;
+use Overtrue\Wechat\Utils\SignGenerator;
+use Overtrue\Wechat\Payment\UnifiedOrder;
+
+/**
+ * 微信支付
+ */
+class Payment
+{
+    /**
+     * 统一下单
+     * 
+     * @var UnifiedOrder
+     */
+    protected $unifiedOrder;
+
+    public function __construct(UnifiedOrder $unifiedOrder)
+    {
+        $this->unifiedOrder = $unifiedOrder;
+    }
+
+    /**
+     * 获取配置文件（用于 WeixinJSBridge invoke 方式）
+     * 
+     * @param bool|true $asJson
+     *
+     * @return array|string
+     */
+    public function getConfig($asJson = true)
+    {
+        $config = $this->generateConfig();
+        return $asJson ? JSON::encode($config) : $config;
+    }
+
+    /**
+     * 获取配置文件（用于 Jssdk chooseWXPay 方式）
+     * 
+     * @param bool|true $asJson
+     *
+     * @return array|string
+     */
+    public function getConfigJssdk($asJson = true)
+    {
+        $config = $this->_generateConfig();
+        $params = array(
+            'timestamp' => $config['timeStamp'],
+            'nonceStr'  => $config['nonceStr'],
+            'package'   => $config['package'],
+            'signType'  => $config['signType'],
+            'paySign'   => $config['paySign']
+        );
+        return $asJson ? JSON::encode($params) : $params;
+    }
+
+    /**
+     * 生成配置
+     * 
+     * @return array
+     * @throws Payment\Exception
+     */
+    private function generateConfig()
+    {
+        $response = $this->unifiedOrder->getResponse();
+        $business = $this->unifiedOrder->getBusiness();
+        $config = array(
+            'appId'     => $business->appid,
+            'timeStamp' => (string) time(),
+            'nonceStr'  => $response['nonce_str'],
+            'package'   => 'prepay_id='.$response['prepay_id'],
+            'signType'  => 'MD5'
+        );
+
+        $signGenerator = new SignGenerator($config);
+        $signGenerator->onSortAfter(function(SignGenerator $that) use ($business) {
+            $that->key = $business->mch_key;
+        });
+        $config['paySign'] = $signGenerator->getResult();
+        return $config;
+    }
+}

src/Wechat/Payment/Business.php

@@ -0,0 +1,116 @@
+<?php
+/**
+ * Business.php
+ *
+ * Part of Overtrue\Wechat.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @author    Frye <frye0423@gmail.com>
+ * @copyright 2015 Frye <frye0423@gmail.com>
+ * @link      https://github.com/0i
+ * @link      http://blog.lost-magic.com
+ * @link      https://github.com/thenbsp/Wechat
+ */
+
+namespace Overtrue\Wechat\Payment;
+
+use Overtrue\Wechat\Utils\MagicAttributes;
+
+class Business extends MagicAttributes
+{
+    /**
+     * 有效的参数
+     * 
+     * @var array
+     */
+    protected $valids = array('appid', 'appsecret', 'mch_id', 'mch_key');
+
+    /**
+     * 商户证书 cert
+     */
+    protected $clientCert;
+
+    /**
+     * 商户证书 key
+     */
+    protected $clientKey;
+
+    /**
+     * @param string $appId
+     * @param string $appSecret
+     * @param string $mchId
+     * @param string $mchKey
+     */
+    public function __construct($appId, $appSecret, $mchId, $mchKey) {
+        $this->appid = $appId;
+        $this->appsecret = $appSecret;
+        $this->mch_id = $mchId;
+        $this->mch_key = $mchKey;
+    }
+
+    /**
+     * 设置商户证书 cert
+     * 
+     * @param $filepath
+     *
+     * @return $this
+     * @throws Exception
+     */
+    public function setClientCert($filepath)
+    {
+        if( !file_exists($filepath) ) {
+            throw new Exception(sprintf('client_cert "%s" is not found', $filepath));
+        }
+        $this->clientCert = $filepath;
+        return $this;
+    }
+
+    /**
+     * 获取商户证书 cert
+     * @return string
+     */
+    public function getClientCert()
+    {
+        return $this->clientCert;
+    }
+
+    /**
+     * 设置商户证书 key
+     * @param $filepath
+     *
+     * @return $this
+     * @throws Exception
+     */
+    public function setClientKey($filepath)
+    {
+        if (!file_exists($filepath)) {
+            throw new Exception(sprintf('client_key "%s" is not found', $filepath));
+        }
+        $this->clientKey = $filepath;
+        return $this;
+    }
+
+    /**
+     * 获取商户证书 key
+     * @return string
+     */
+    public function getClientKey()
+    {
+        return $this->clientKey;
+    }
+
+    /**
+     * 检测参数值是否有效
+     */
+    public function checkParams()
+    {
+        foreach($this->valids AS $paramName) {
+            if (empty($this->attributes[$paramName])) {
+                throw new Exception(sprintf('"%s" is required', $paramName));
+            }
+        }
+    }
+
+}

src/Wechat/Payment/Exception.php

@@ -0,0 +1,19 @@
+<?php
+/**
+ * Exception.php
+ *
+ * Part of Overtrue\Wechat.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @author    Frye <frye0423@gmail.com>
+ * @copyright 2015 Frye <frye0423@gmail.com>
+ * @link      https://github.com/0i
+ * @link      http://blog.lost-magic.com
+ * @link      https://github.com/thenbsp/Wechat
+ */
+
+namespace Overtrue\Wechat\Payment;
+
+class Exception extends \Overtrue\Wechat\Exception { }

src/Wechat/Payment/Notify.php

@@ -0,0 +1,94 @@
+<?php
+/**
+ * Notify.php
+ *
+ * Part of Overtrue\Wechat.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @author    Frye <frye0423@gmail.com>
+ * @copyright 2015 Frye <frye0423@gmail.com>
+ * @link      https://github.com/0i
+ * @link      http://blog.lost-magic.com
+ * @link      https://github.com/0i/Wechat
+ */
+
+namespace Overtrue\Wechat\Payment;
+
+use Overtrue\Wechat\Utils\XML;
+use Overtrue\Wechat\Utils\Bag;
+
+class Notify
+{
+    protected $appId;
+    protected $appSecret;
+    protected $mchId;
+    protected $mchKey;
+
+    /**
+     * @var Bag
+     */
+    protected $transaction;
+
+    public function __construct($appId, $appSecret, $mchId, $mchKey) {
+        $this->appId = $appId;
+        $this->appSecret = $appSecret;
+        $this->mchId = $mchId;
+        $this->mchKey = $mchKey;
+    }
+
+    /**
+     * 验证订单消息是否合法,
+     * 不合法返回false, 合法返回订单信息详情
+     * 
+     * @return bool|Bag
+     */
+    public function verify() {
+        if (version_compare(PHP_VERSION, '5.6.0', '<')) {
+            if (!empty($GLOBALS['HTTP_RAW_POST_DATA'])) {
+                $xmlInput = $GLOBALS['HTTP_RAW_POST_DATA'];
+            } else {
+                $xmlInput = file_get_contents('php://input');
+            }
+        } else {
+            $xmlInput = file_get_contents('php://input');
+        }
+
+        if (empty($xmlInput)) {
+            return false;
+        }
+
+        $input = XML::parse($xmlInput);
+        if (empty($input) || empty($input['sign'])) {
+            return false;
+        }
+
+        $sign = $input['sign'];
+        unset($input['sign']); ksort($input);
+        $str = strtoupper(md5(http_build_query($input).'&key='.$this->mchKey));
+        if ($sign !== $str) {
+            return false;
+        }
+
+        return $this->transaction = new Bag($input);
+    }
+
+    /**
+     * 回复消息, 如果不回复, 微信会一直发送请求到notify_url
+     * 
+     * @param string $code
+     * @param string $msg
+     *
+     * @return string
+     */
+    public function reply($code = 'SUCCESS', $msg = 'OK') {
+        $params = [
+            'return_code' => $code,
+            'return_msg' => $msg,
+        ];
+
+        return XML::build($params);
+    }
+
+}