From fc5ad4b7628f24f083e6ab98461f852b51828fce Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=B5=AA=E4=B8=8D=E8=83=BD=E5=81=9C?= <guowind@live.com>
Date: Fri, 20 Mar 2026 14:25:48 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E5=A4=84=E7=90=86media/uploadimg?=
 =?UTF-8?q?=E6=8E=A5=E5=8F=A3=E7=9A=84=E6=96=87=E4=BB=B6=E6=A0=BC=E5=BC=8F?=
 =?UTF-8?q?=E5=92=8C=E5=A4=A7=E5=B0=8F=E9=99=90=E5=88=B6?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- 添加文件大小和格式检查常量
- GIF图片或大于1MB的图片自动回退使用material接口
- 确保向后兼容现有工作流
---
 .../scripts/wechat-api.ts                     | 20 +++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/skills/baoyu-post-to-wechat/scripts/wechat-api.ts b/skills/baoyu-post-to-wechat/scripts/wechat-api.ts
index 7266460..154bf66 100644
--- a/skills/baoyu-post-to-wechat/scripts/wechat-api.ts
+++ b/skills/baoyu-post-to-wechat/scripts/wechat-api.ts
@@ -73,6 +73,10 @@ async function fetchAccessToken(appId: string, appSecret: string): Promise<strin
   return data.access_token;
 }
 
+// media/uploadimg 接口的限制：只支持 JPG/PNG 格式，文件大小需小于 1MB
+const BODY_IMG_MAX_SIZE = 1024 * 1024; // 1MB
+const BODY_IMG_SUPPORTED_FORMATS = [".jpg", ".jpeg", ".png"];
+
 async function uploadImage(
   imagePath: string,
   accessToken: string,
@@ -82,6 +86,8 @@ async function uploadImage(
   let fileBuffer: Buffer;
   let filename: string;
   let contentType: string;
+  let fileSize = 0;
+  let fileExt = "";
 
   if (imagePath.startsWith("http://") || imagePath.startsWith("https://")) {
     const response = await fetch(imagePath);
@@ -93,8 +99,10 @@ async function uploadImage(
       throw new Error(`Remote image is empty: ${imagePath}`);
     }
     fileBuffer = Buffer.from(buffer);
+    fileSize = buffer.byteLength;
     const urlPath = imagePath.split("?")[0];
     filename = path.basename(urlPath) || "image.jpg";
+    fileExt = path.extname(filename).toLowerCase();
     contentType = response.headers.get("content-type") || "image/jpeg";
   } else {
     const resolvedPath = path.isAbsolute(imagePath)
@@ -108,9 +116,10 @@ async function uploadImage(
     if (stats.size === 0) {
       throw new Error(`Local image is empty: ${resolvedPath}`);
     }
+    fileSize = stats.size;
     fileBuffer = fs.readFileSync(resolvedPath);
     filename = path.basename(resolvedPath);
-    const ext = path.extname(filename).toLowerCase();
+    fileExt = path.extname(filename).toLowerCase();
     const mimeTypes: Record<string, string> = {
       ".jpg": "image/jpeg",
       ".jpeg": "image/jpeg",
@@ -118,7 +127,14 @@ async function uploadImage(
       ".gif": "image/gif",
       ".webp": "image/webp",
     };
-    contentType = mimeTypes[ext] || "image/jpeg";
+    contentType = mimeTypes[fileExt] || "image/jpeg";
+  }
+
+  // media/uploadimg 接口只支持 JPG/PNG 且小于 1MB，如果是其他格式或文件过大，需要使用 material 接口
+  const isGifOrLarge = fileExt === ".gif" || fileSize > BODY_IMG_MAX_SIZE;
+  if (uploadType === "body" && isGifOrLarge) {
+    console.error(`[wechat-api] Image ${filename} is GIF or larger than 1MB, using material API instead`);
+    uploadType = "material";
   }
 
   const boundary = `----WebKitFormBoundary${Date.now().toString(16)}`;