idk

client-protocol/Message.ts

@@ -75,6 +75,28 @@ class ChatAttachment extends BaseClientObject {
         } as ApiCallbackMessage)
         return blob
     }
+    async getMimeType() {
+        try {
+            return await this.getMimeTypeOrThrow()
+        } catch (_) {
+            return null
+        }
+    }
+    async getMimeTypeOrThrow() {
+        const re = await this.fetch({
+            method: 'HEAD'
+        })
+        if (re.ok) {
+            const t = re.headers.get('content-type')
+            if (t)
+                return t
+            throw new Error("Unable to get Content-Type")
+        }
+        throw new CallbackError({
+            msg: await re.text(),
+            code: re.status,
+        } as ApiCallbackMessage)
+    }
     async getLength() {
         try {
             return await this.getLengthOrThrow()
@@ -162,8 +184,8 @@ export default class Message extends BaseClientObject {
 
                         if (fileType != null && /tws:\/\/file\?hash=[A-Za-z0-9]+$/.test(href)) {
                             const file_hash = /^tws:\/\/file\?hash=(.*)/.exec(href)?.[1]!
-                            let file_name: string = /^Video|File|Image=(.*)/.exec(text)?.[1] || text
-                            file_name.trim() == '' && (file_name = 'Unnamed File')
+                            let file_name: string = /^(Video|File|Image)=(.*)/.exec(text)?.[2] || text
+                            file_name.trim() == '' && (file_name = 'Unnamed_File')
                             return attachment ? attachment({ text: text, attachment: new ChatAttachment(this.client, { file_hash, file_name }), fileType: fileType, }) : text
                         }
                         if (mentionType != null && /^tws:\/\/chat\?id=[A-Za-z0-9]+/.test(href)) {