From 1e213ddbc46a5a348181cab5b8edb7cfd58bb9a1 Mon Sep 17 00:00:00 2001
From: CrescentLeaf <crescentleaf@noreply.codeberg.org>
Date: Sat, 29 Nov 2025 01:20:48 +0800
Subject: [PATCH] feat get mimetype

---
 client-protocol/Message.ts | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/client-protocol/Message.ts b/client-protocol/Message.ts
index 9511d9d..ea5729a 100644
--- a/client-protocol/Message.ts
+++ b/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 parseInt(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()