新增创建订单发起支付

extend/Wechat/WechatPay.php

@@ -2,15 +2,45 @@
 
 namespace Extend\Wechat;
 
+use App\Constants\HttpEnumCode;
+use App\Exception\BusinessException;
+use EasyWeChat\Kernel\Exceptions\InvalidArgumentException;
+use EasyWeChat\Kernel\Exceptions\InvalidConfigException;
+use EasyWeChat\Pay\Application;
+use Hyperf\Utils\ApplicationContext;
+use Psr\SimpleCache\CacheInterface;
+
 /**
  * 微信支付类
  */
 class WechatPay
 {
-    protected $app;
+    protected array $config;// 系统配置
 
-    // 创建工厂类
-    public function createApp(){
+    /**
+     * @param string $user_type
+     */
+    public function __construct(string $user_type)
+    {
+        if ($user_type == 1){
+            $this->config = config("we_chat.applets.patient");
+        }elseif ($user_type == 2){
+            $this->config = config("we_chat.applets.doctor");
+        }elseif ($user_type == 3){
+            $this->config = config("we_chat.applets.pharmacist");
+        }
+
+        if (empty($this->config)){
+            throw new BusinessException("系统配置错误", HttpEnumCode::SERVER_ERROR);
+        }
+    }
+
+    /**
+     * 创建工厂类
+     * @return Application
+     */
+    public function createApp(): Application
+    {
         $config = [
             'mch_id' => config("we_chat.pay.mch_id"),
 
@@ -28,7 +58,7 @@ class WechatPay
             // 下载工具：https://github.com/wechatpay-apiv3/CertificateDownloader
             'platform_certs' => [
                 // 请使用绝对路径
-                __DIR__ . '/certs/wechatpay_112FCCD1B9ECC8292703AB7363C73D74B6AFDC1A.pem',
+                __DIR__ . '/certs/' . config("we_chat.pay.mch_id") . '/wechatpay_112FCCD1B9ECC8292703AB7363C73D74B6AFDC1A.pem',
             ],
 
             /**
@@ -41,5 +71,84 @@ class WechatPay
                 // 'base_uri' => 'https://api.mch.weixin.qq.com/', // 如果你在国外想要覆盖默认的 url 的时候才使用，根据不同的模块配置不同的 uri
             ],
         ];
+
+        try {
+            return new Application($config);
+        } catch (InvalidArgumentException $e) {
+            throw new BusinessException('实例化EasyWeChat类失败:' . $e->getMessage(), HttpEnumCode::SERVER_ERROR);
+        }
+    }
+
+    /**
+     * 获取jsapi预支付交易会话标识
+     * @param string $out_trade_no 商户系统内部订单号
+     * @param int $total 支付金额（实际金额x100）
+     * @param string $openid
+     * @return array
+     */
+    public function getJsapiPrepayId(string $out_trade_no,int $total,string $openid): array
+    {
+        $app = $this->createApp();
+
+        $options = [
+            "mchid" => config("we_chat.pay.mch_id"), // <---- 商户号
+            "out_trade_no" => $out_trade_no, // 商户系统内部订单号
+            "appid" => $this->config['app_id'],
+            "description" => "问诊服务",
+            "notify_url" => "https://dev.hospital.applets.igandanyiyuan.com/pay/wx/callback",
+            "amount" => [
+                "total" => $total,//订单总金额，单位为分。
+                "currency" => "CNY"
+            ],
+            "payer" => [
+                "openid" => $openid // 下单用户的 openid
+            ]
+        ];
+
+        try {
+            $response = $app->getClient()->postJson("v3/pay/transactions/jsapi", $options);
+            dump($response->toArray(false));
+            if ($response->isFailed()) {
+                // 出错了，处理异常
+                $result = $response->toArray(false);
+                if(empty($result)){
+                    // 返回值为空
+                    throw new BusinessException("发起支付失败");
+                }
+                if (!empty($result['code'])){
+                    throw new BusinessException($result['message']);
+                }
+                throw new BusinessException("发起支付失败");
+            }
+
+            return $response->toArray(false);
+        } catch (\Exception $e) {
+            throw new BusinessException($e->getMessage(), HttpEnumCode::SERVER_ERROR);
+        }
+    }
+
+    /**
+     * 获取小程序支付配置
+     * @param string $prepay_id 预支付交易会话标识
+     * @return array
+     */
+    public function getAppletsPayConfig(string $prepay_id): array
+    {
+
+        try {
+            $app = $this->createApp();
+            $utils = $app->getUtils();
+
+            $appId = $this->config['app_id'];
+            $signType = 'RSA'; // 默认RSA，v2要传MD5
+
+            $config = $utils->buildMiniAppConfig($prepay_id, $appId, $signType);
+            if (empty($config)){
+                throw new BusinessException("发起支付失败");
+            }
+            return $config;
+        } catch (\Exception $e) {
+            throw new BusinessException($e->getMessage(), HttpEnumCode::SERVER_ERROR);
+        }
     }
 }