fix: Sync time is updated even if upload failed

backend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "sub-store",
-  "version": "2.8.2",
+  "version": "2.8.3",
   "description": "Advanced Subscription Manager for QX, Loon, Surge, Stash and ShadowRocket.",
   "main": "src/main.js",
   "scripts": {

backend/src/restful/index.js

@@ -104,16 +104,26 @@ async function gistBackup(req, res) {
         try {
             let content;
             const settings = $.read(SETTINGS_KEY);
+            const updated = settings.syncTime;
             switch (action) {
                 case 'upload':
-                    // update syncTime.
+                    // update syncTime
                     settings.syncTime = new Date().getTime();
                     $.write(settings, SETTINGS_KEY);
                     content = $.read('#sub-store');
                     if ($.env.isNode)
                         content = JSON.stringify($.cache, null, `  `);
                     $.info(`上传备份中...`);
-                    await gist.upload({ [GIST_BACKUP_FILE_NAME]: { content } });
+                    try {
+                        await gist.upload({
+                            [GIST_BACKUP_FILE_NAME]: { content },
+                        });
+                    } catch (err) {
+                        // restore syncTime if upload failed
+                        settings.syncTime = updated;
+                        $.write(settings, SETTINGS_KEY);
+                        throw err;
+                    }
                     break;
                 case 'download':
                     $.info(`还原备份中...`);

backend/src/restful/settings.js

@@ -62,8 +62,10 @@ async function updateArtifactStore() {
 
         try {
             const gistId = await manager.locate();
-            settings.artifactStore = `https://gist.github.com/${githubUser}/${gistId}`;
-            $.write(settings, SETTINGS_KEY);
+            if (gistId !== -1) {
+                settings.artifactStore = `https://gist.github.com/${githubUser}/${gistId}`;
+                $.write(settings, SETTINGS_KEY);
+            }
         } catch (err) {
             $.error('Failed to fetch artifact store for User: ' + githubUser);
         }