feat: 校验备份文件时 settings 字段可以无任何字段

Author: xream

backend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "sub-store",
-  "version": "2.21.3",
+  "version": "2.21.4",
   "description": "Advanced Subscription Manager for QX, Loon, Surge, Stash and Shadowrocket.",
   "main": "src/main.js",
   "scripts": {

backend/src/restful/index.js

@@ -470,15 +470,15 @@ export default function serve() {
                 .then(async (content) => {
                     try {
                         content = JSON.parse(Base64.decode(content));
-                        if (Object.keys(content.settings).length === 0) {
+                        if (!(Object.keys(content.settings).length >= 0)) {
                             throw new Error(
                                 '备份文件应该至少包含 settings 字段',
                             );
                         }
                     } catch (err) {
                         try {
                             content = JSON.parse(content);
-                            if (Object.keys(content.settings).length === 0) {
+                            if (!(Object.keys(content.settings).length >= 0)) {
                                 throw new Error(
                                     '备份文件应该至少包含 settings 字段',
                                 );

backend/src/restful/miscs.js

@@ -44,13 +44,13 @@ export default function register($app) {
             let { content } = req.body;
             try {
                 content = JSON.parse(Base64.decode(content));
-                if (Object.keys(content.settings).length === 0) {
+                if (!(Object.keys(content.settings).length >= 0)) {
                     throw new Error('备份文件应该至少包含 settings 字段');
                 }
             } catch (err) {
                 try {
                     content = JSON.parse(content);
-                    if (Object.keys(content.settings).length === 0) {
+                    if (!(Object.keys(content.settings).length >= 0)) {
                         throw new Error('备份文件应该至少包含 settings 字段');
                     }
                 } catch (err) {
@@ -205,13 +205,13 @@ async function gistBackupAction(action, keep, encode) {
             content = await gist.download(GIST_BACKUP_FILE_NAME);
             try {
                 content = JSON.parse(Base64.decode(content));
-                if (Object.keys(content.settings).length === 0) {
+                if (!(Object.keys(content.settings).length >= 0)) {
                     throw new Error('备份文件应该至少包含 settings 字段');
                 }
             } catch (err) {
                 try {
                     content = JSON.parse(content);
-                    if (Object.keys(content.settings).length === 0) {
+                    if (!(Object.keys(content.settings).length >= 0)) {
                         throw new Error('备份文件应该至少包含 settings 字段');
                     }
                 } catch (err) {