From 00eab3b865517bbfca4744d377b1c549f7a0d0da Mon Sep 17 00:00:00 2001
From: wm <2747639460@qq.com>
Date: Mon, 3 Aug 2026 20:11:52 +0800
Subject: [PATCH] =?UTF-8?q?feat(media):=20=E5=8A=A8=E5=9B=BE=E8=BF=81?=
 =?UTF-8?q?=E7=A7=BB=E8=87=B3=E4=B8=83=E7=89=9B=E4=BA=91CDN(qn.585998.xyz/?=
 =?UTF-8?q?=E5=8D=8E=E5=8D=97);=20normalize.ts=E6=8C=89videos/images?=
 =?UTF-8?q?=E5=88=86=E6=B5=81;=20bump=20MEDIA=5FCACHE=5FBUST?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 backend/src/exercises/utils/normalize.ts | 9 +++++++++
 miniprogram/config.js                    | 6 +++---
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/backend/src/exercises/utils/normalize.ts b/backend/src/exercises/utils/normalize.ts
index d58e46a..ff23936 100644
--- a/backend/src/exercises/utils/normalize.ts
+++ b/backend/src/exercises/utils/normalize.ts
@@ -17,9 +17,18 @@ const MEDIA_BASE_URL = (
   process.env.MEDIA_BASE_URL || 'http://localhost:3000/media'
 ).replace(/\/$/, '');
 
+// 动图(GIF)已迁移至七牛云 CDN（华南节点），静态图(JPG)仍走自托管。
+const QINIU_GIF_BASE_URL = (
+  process.env.QINIU_GIF_BASE_URL || 'https://qn.585998.xyz'
+).replace(/\/$/, '');
+
 function toMediaUrl(path: string): string {
   if (!path) return '';
   if (/^https?:\/\//.test(path)) return path;
+  // 动图走七牛 CDN，静态图走原服务器
+  if (path.startsWith('videos/')) {
+    return `${QINIU_GIF_BASE_URL}/${path}`;
+  }
   return `${MEDIA_BASE_URL}/${path}`;
 }
 
diff --git a/miniprogram/config.js b/miniprogram/config.js
index 758bf61..7cdc017 100644
--- a/miniprogram/config.js
+++ b/miniprogram/config.js
@@ -6,7 +6,7 @@ module.exports = {
   BASE_URL: 'http://192.227.237.8:3001',
   // 媒体资源缓存击穿：服务器静态文件(动图/图片)被覆盖新版本后，旧版可能被微信请求缓存，
   // 导致客户端仍显示旧图。换媒体(如重做超分动图)后修改此值即可强制全量客户端重新下载。
-  // 2026-08-02：服务器端 1324 个动图经 gifsicle -O3 --lossy=80 压缩(1.8G→856M，分辨率/帧数不变)，
-  // 改此值让客户端重新拉取压缩后的小体积版本。
-  MEDIA_CACHE_BUST: '20260802'
+  // 2026-08-03：动图迁移至七牛云 CDN(https://qn.585998.xyz，华南节点)，
+  // 域名变更需客户端重新拉取，故 bump 此值。
+  MEDIA_CACHE_BUST: '20260803'
 };