wechat: add payment logic (#108)

README.md

@@ -404,6 +404,26 @@ Receive result for `shareToTimeline` and `shareToSession` and arguments would be
 
 For more details, visit [WeChat SDK].
 
+#### `pay`
+
+```
+try {
+  let result = await WeChat.pay(
+    {
+      partnerId: '', // 商家向财付通申请的商家id
+      prepayId: '', // 预支付订单
+      nonceStr: '', // 随机串，防重发
+      timeStamp: '', // 时间戳，防重发
+      package: '', // 商家根据财付通文档填写的数据和签名
+      sign: '' // 商家根据微信开放平台文档对数据做的签名
+    }
+  );
+  console.log('Pay for success!');
+} catch (error) {
+  console.log('Pay for failure!');
+}
+```
+
 ## Installation
 
 ```sh

android/src/main/java/com/theweflex/react/WeChatModule.java

@@ -37,6 +37,8 @@ import com.tencent.mm.sdk.modelmsg.WXMusicObject;
 import com.tencent.mm.sdk.modelmsg.WXTextObject;
 import com.tencent.mm.sdk.modelmsg.WXVideoObject;
 import com.tencent.mm.sdk.modelmsg.WXWebpageObject;
+import com.tencent.mm.sdk.modelpay.PayReq;
+import com.tencent.mm.sdk.modelpay.PayResp;
 import com.tencent.mm.sdk.openapi.IWXAPI;
 import com.tencent.mm.sdk.openapi.IWXAPIEventHandler;
 import com.tencent.mm.sdk.openapi.WXAPIFactory;
@@ -161,6 +163,34 @@ public class WeChatModule extends ReactContextBaseJavaModule implements IWXAPIEv
         _share(SendMessageToWX.Req.WXSceneSession, data, callback);
     }
 
+    @ReactMethod
+    public void pay(ReadableMap data, Callback callback){
+        PayReq payReq = new PayReq();
+        if (data.hasKey("partnerId")) {
+            payReq.partnerId = data.getString("partnerId");
+        }
+        if (data.hasKey("prepayId")) {
+            payReq.prepayId = data.getString("prepayId");
+        }
+        if (data.hasKey("nonceStr")) {
+            payReq.nonceStr = data.getString("nonceStr");
+        }
+        if (data.hasKey("timeStamp")) {
+            payReq.timeStamp = data.getString("timeStamp");
+        }
+        if (data.hasKey("sign")) {
+            payReq.sign = data.getString("sign");
+        }
+        if (data.hasKey("package")) {
+            payReq.packageValue = data.getString("package");
+        }
+        if (data.hasKey("extData")) {
+            payReq.extData = data.getString("extData");
+        }
+        payReq.appId = appId;
+        callback.invoke(api.sendReq(payReq) ? null : INVOKE_FAILED);
+    }
+
     private void _share(final int scene, final ReadableMap data, final Callback callback) {
         Uri uri = null;
         if (data.hasKey("thumbImage")) {
@@ -441,6 +471,10 @@ public class WeChatModule extends ReactContextBaseJavaModule implements IWXAPIEv
         } else if (baseResp instanceof SendMessageToWX.Resp) {
             SendMessageToWX.Resp resp = (SendMessageToWX.Resp) (baseResp);
             map.putString("type", "SendMessageToWX.Resp");
+        } else if (baseResp instanceof PayResp) {
+            PayResp resp = (PayResp) (baseResp);
+            map.putString("type", "PayReq.Resp");
+            map.putString("returnKey", resp.returnKey);
         }
 
         this.getReactApplicationContext()

index.js

@@ -183,3 +183,30 @@ export function shareToTimeline(data) {
 export function shareToSession(data) {
   return nativeShareToSession(data);
 }
+
+/**
+ * wechat pay
+ * @param {Object} data
+ * @param {String} data.partnerId
+ * @param {String} data.prepayId
+ * @param {String} data.nonceStr
+ * @param {String} data.timeStamp
+ * @param {String} data.package
+ * @param {String} data.sign
+ * @returns {Promise}
+ */
+export function pay(data) {
+  return new Promise((resolve, reject) => {
+    WeChat.pay(data, (result) => {
+      if (result) reject(result);
+    });
+    emitter.on('PayReq.Resp', (resp) => {
+      const result = resp.errCode;
+      if (result === 0) {
+        resolve(resp.returnKey);
+      } else {
+        reject(result);
+      }
+    });
+  });
+}

ios/RCTWeChat.m

@@ -151,6 +151,20 @@ RCT_EXPORT_METHOD(shareToSession:(NSDictionary *)data
     [self shareToWeixinWithData:data scene:WXSceneSession callback:callback];
 }
 
+RCT_EXPORT_METHOD(pay:(NSDictionary *)data
+                  :(RCTResponseSenderBlock)callback)
+{
+    PayReq* req             = [PayReq new];
+    req.partnerId           = data[@"partnerId"];
+    req.prepayId            = data[@"prepayId"];
+    req.nonceStr            = data[@"nonceStr"];
+    req.timeStamp           = [data[@"timeStamp"] unsignedIntValue];
+    req.package             = data[@"package"];
+    req.sign                = data[@"sign"];
+    BOOL success = [WXApi sendReq:req];
+    callback(@[success ? [NSNull null] : INVOKE_FAILED]);
+}
+
 - (void)shareToWeixinWithData:(NSDictionary *)aData
                    thumbImage:(UIImage *)aThumbImage
                         scene:(int)aScene
@@ -360,7 +374,15 @@ RCT_EXPORT_METHOD(shareToSession:(NSDictionary *)data
 	    else {
 	        [self.bridge.eventDispatcher sendDeviceEventWithName:RCTWXEventName body:body];
 	    }
-	}
+	} else if ([resp isKindOfClass:[PayResp class]]) {
+	        PayResp *r = (PayResp *)resp;
+	        NSMutableDictionary *body = @{@"errCode":@(r.errCode)}.mutableCopy;
+	        body[@"errStr"] = r.errStr;
+	        body[@"type"] = @(r.type);
+	        body[@"returnKey"] =r.returnKey;
+	        body[@"type"] = @"PayReq.Resp";
+	        [self.bridge.eventDispatcher sendDeviceEventWithName:RCTWXEventName body:body];
+    	}
 }
 
 @end