feat: 🎸 收消息增加@我的参数isMentioned，收到文件是unknown时优先使用buffer判断文件类型

✅ Closes: #38

README.md

@@ -134,6 +134,7 @@ curl --location --request POST 'http://localhost:3001/webhook/msg' \
 | type | <div>支持的类型</div><ul><li>✅ 文字(text)</li><li>✅ 链接卡片(urlLink)</li><li>✅ 图片(file)</li><li>✅ 视频(file)</li><li>✅ 附件(file)</li> <li>✅ 语音(file)</li></ul> refer: [wechaty类型支持列表](https://wechaty.js.org/docs/api/message#messagetype--messagetype) | `String` | `text`  `file` `urlLink` | - |
 | content | 传输的内容, 文本或传输的文件共用这个字段，结构映射请看示例 | `String`  `Binary`  |  | [示例](docs/recvdApi.example.md#formdatacontent) |
 | source | 消息的相关发送方数据, JSON String | `String` | | [示例](docs/recvdApi.example.md#formdatasource) |
+| isMentioned | 该消息是@我的消息 | `String` |`1` `0` | - |
 | isSystemEvent | 是否是来自系统消息事件（比如上线，掉线、异常事件）| `String` | `1` `0` | - |
 
 ### 3. 登录APi

src/service/webhook.js

@@ -60,8 +60,11 @@ const sendMsg2RecvdApi = async function (msg) {
   formData.append('source', JSON.stringify(source))
   formData.append('isSystemEvent', msg.isSystemEvent ? '1' : '0')
 
+  //有人@我
+  const someoneMentionMe = ( msg.mentionSelf && await msg.mentionSelf()) /** 原版@我，wechaty web版应该都是false */
+  formData.append('isMentioned', someoneMentionMe ? '1' : '0')
+
   switch (msg.type()) {
-
     case 1: // 附件
     case 2: // 语音
     case 6: // 图片
@@ -74,7 +77,10 @@ const sendMsg2RecvdApi = async function (msg) {
       //文件类型尝试解析
       if (type) {
         fileInfo = {
-          filename: steamFile._name || `${Date.now()}.${type.ext}`,
+          // _name:'unknown.txt' => unknown.jpg
+          filename: steamFile.mimeType === 'application/unknown' /** 截图等无法推断出文件名会变成 unknown.txt */
+            ? `${Date.now()}.${type.ext}`
+            : (steamFile._name || `${Date.now()}.${type.ext}`),
           ext: type.ext,
           mime: type.mime
         }
@@ -116,7 +122,7 @@ const sendMsg2RecvdApi = async function (msg) {
 
   if (!passed) return
 
-  console.log('starting fetching api: ' + webhookUrl, msg.payload)
+  console.log('starting fetching api: ' + webhookUrl, formData._streams)
 
   await fetch(webhookUrl, {
     method: 'POST',