feat: Sub-Store 生成的订阅地址支持传入 订阅链接/User-Agent/节点内容 可以复用此订阅的其他设置

例如: 建一个 name 为 sub 的订阅, 配置好节点操作

以后可以自由传入参数 无需在 Sub-Store 前端创建新的配置

`/download/sub?target=Surge&content=encodeURIComponent编码过的本地节点`

`/download/sub?target=Surge&url=encodeURIComponent编码过的订阅链接&ua=encodeURIComponent编码过的User-Agent`

backend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "sub-store",
-  "version": "2.14.90",
+  "version": "2.14.91",
   "description": "Advanced Subscription Manager for QX, Loon, Surge, Stash and ShadowRocket.",
   "main": "src/main.js",
   "scripts": {

backend/src/restful/download.js

@@ -20,6 +20,16 @@ async function downloadSubscription(req, res) {
         req.query.target || getPlatformFromHeaders(req.headers) || 'JSON';
 
     $.info(`正在下载订阅：${name}`);
+    const { url, ua, content } = req.query;
+    if (url) {
+        $.info(`指定 url: ${url}`);
+    }
+    if (ua) {
+        $.info(`指定 ua: ${ua}`);
+    }
+    if (content) {
+        $.info(`指定 content: ${content}`);
+    }
 
     const allSubs = $.read(SUBS_KEY);
     const sub = findByName(allSubs, name);
@@ -29,12 +39,15 @@ async function downloadSubscription(req, res) {
                 type: 'subscription',
                 name,
                 platform,
+                url,
+                ua,
+                content,
             });
 
-            if (sub.source !== 'local') {
+            if (sub.source !== 'local' || url) {
                 try {
                     // forward flow headers
-                    const flowInfo = await getFlowHeaders(sub.url);
+                    const flowInfo = await getFlowHeaders(url || sub.url);
                     if (flowInfo) {
                         res.set('subscription-userinfo', flowInfo);
                     }

backend/src/restful/sync.js

@@ -22,14 +22,18 @@ export default function register($app) {
     $app.get('/api/sync/artifact/:name', syncArtifact);
 }
 
-async function produceArtifact({ type, name, platform }) {
+async function produceArtifact({ type, name, platform, url, ua, content }) {
     platform = platform || 'JSON';
 
     if (type === 'subscription') {
         const allSubs = $.read(SUBS_KEY);
         const sub = findByName(allSubs, name);
         let raw;
-        if (sub.source === 'local') {
+        if (url) {
+            raw = await download(url, ua);
+        } else if (content) {
+            raw = content;
+        } else if (sub.source === 'local') {
             raw = sub.content;
         } else {
             raw = await download(sub.url, sub.ua);