feat: 增加 重定向功能

.env

@@ -13,6 +13,10 @@ LOGFILES=false
 # BASE_URL='http://localhost:3000'
 BASE_URL=''
 
+# 重定向地址，如果本云函数未处理请求，则重定向到该地址
+# REDIRECT_URL='http://localhost:4000'
+REDIRECT_URL=''
+
 # 微信公众号相关配置
 WX_TOKEN=''
 WX_APP_ID=''

src/env.ts

@@ -34,3 +34,6 @@ export const ADMIN_KEY = process.env.ADMIN_KEY || ''
 
 // 基础路径
 export const BASE_URL = process.env.BASE_URL || `http://localhost:${PORT}`
+
+// 重定向地址
+export const REDIRECT_URL = process.env.REDIRECT_URL || ''

src/routes/event.ts

@@ -2,7 +2,7 @@ import { Hono } from 'hono'
 import { HTTPException } from 'hono/http-exception'
 import { to } from 'await-to-js'
 import { sha1, toCamelCase, xml2json } from '@/utils/helper'
-import { WX_TOKEN } from '@/env'
+import { REDIRECT_URL, WX_TOKEN } from '@/env'
 import winstonLogger from '@/utils/logger'
 import { WechatEventBody } from '@/interfaces/wechat-event-body'
 import { handleEvent } from '@/services/event'
@@ -55,6 +55,15 @@ app.post('/', async (c) => {
     const response = await handleEvent(body)
 
     winstonLogger.isDebugEnabled() && winstonLogger.debug(`Response: \n${response}`)
+
+    if (response === 'redirect') { // 本云函数未处理请求，则重定向到该地址
+        if (REDIRECT_URL) {
+            const searchParams = new URLSearchParams(query)
+            return c.redirect(`${REDIRECT_URL}?${searchParams}`, 307)
+        }
+        c.header('Content-Type', 'text/xml')
+        return c.text('success', 200)
+    }
     c.header('Content-Type', 'text/xml')
     return c.text(response, 200)
 })

src/services/event.ts

@@ -77,15 +77,8 @@ export async function handleEvent(body: IWechatEventBody) {
                     content: respContent,
                 })
             }
-            // 否则复读
-            // TODO 如果未匹配到关键词，则转发请求到下一个服务器
-            const respContent = `您发送的消息是：${content}`
-            return replyMessage({
-                toUserName: fromUserName,
-                fromUserName: toUserName,
-                msgType: 'text',
-                content: respContent,
-            })
+            // 未匹配到关键词，则转发请求到下一个服务器
+            return 'redirect'
         }
         case 'image': { // 图片消息
             const { mediaId } = body