chore: configure eslint and update gitignore

main.js

@@ -1,16 +1,74 @@
-const { app, BrowserWindow, ipcMain, clipboard, Menu } = require('electron');
+const { app, BrowserWindow, ipcMain, clipboard, Menu, desktopCapturer, screen } = require('electron');
 const path = require('path');
+const fs = require('fs');
 const Database = require('./src/db/database');
 
-// 强制设置用户数据存储位置为项目根目录下的 data 文件夹
-// 这样 Electron 的缓存、Localstorage、日志等都不会写到 C 盘
+// Force userData path to project root/data folder
+// Prevents Electron cache/localStorage/logs from writing to C drive
 app.setPath('userData', path.join(process.cwd(), 'data'));
 
 let mainWindow;
 let db;
+let backupInterval;
+
+// Auto backup feature
+function startAutoBackup() {
+  const backupDir = path.join(process.cwd(), 'DB');
+  const dbPath = path.join(process.cwd(), 'accounts.db');
+
+  // Ensure backup directory exists
+  if (!fs.existsSync(backupDir)) {
+    fs.mkdirSync(backupDir, { recursive: true });
+  }
+
+  // Backup every 30 minutes
+  backupInterval = setInterval(() => {
+    try {
+      if (fs.existsSync(dbPath)) {
+        const now = new Date();
+        const timestamp = now.getFullYear().toString() +
+          (now.getMonth() + 1).toString().padStart(2, '0') +
+          now.getDate().toString().padStart(2, '0') + '_' +
+          now.getHours().toString().padStart(2, '0') +
+          now.getMinutes().toString().padStart(2, '0') +
+          now.getSeconds().toString().padStart(2, '0');
+
+        const backupPath = path.join(backupDir, `accounts_${timestamp}.db`);
+        fs.copyFileSync(dbPath, backupPath);
+        console.log(`[Backup] Auto backup success: ${backupPath}`);
+
+        // Clean old backups, keep last 10
+        cleanOldBackups(backupDir, 10);
+      }
+    } catch (e) {
+      console.error('[Backup] Backup failed:', e);
+    }
+  }, 30 * 60 * 1000); // 30 minutes
+
+  console.log('[Backup] Auto backup started, interval 30 minutes');
+}
+
+// Clean old backups
+function cleanOldBackups(backupDir, keepCount) {
+  try {
+    const files = fs.readdirSync(backupDir)
+      .filter(f => f.startsWith('accounts_') && f.endsWith('.db'))
+      .map(f => ({ name: f, path: path.join(backupDir, f), time: fs.statSync(path.join(backupDir, f)).mtime }))
+      .sort((a, b) => b.time - a.time);
+
+    if (files.length > keepCount) {
+      files.slice(keepCount).forEach(f => {
+        fs.unlinkSync(f.path);
+        console.log(`[Backup] Deleted old backup: ${f.name}`);
+      });
+    }
+  } catch (e) {
+    console.error('[Backup] Clean old backups failed:', e);
+  }
+}
 
 function createWindow() {
-  // 移除应用菜单栏
+  // Remove application menu bar
   Menu.setApplicationMenu(null);
 
   mainWindow = new BrowserWindow({
@@ -21,7 +79,8 @@ function createWindow() {
     webPreferences: {
       preload: path.join(__dirname, 'preload.js'),
       contextIsolation: true,
-      nodeIntegration: false
+      nodeIntegration: false,
+      sandbox: false
     },
     backgroundColor: '#0a0a0b',
     titleBarStyle: 'default',
@@ -34,13 +93,16 @@ function createWindow() {
     mainWindow.show();
   });
 
-  // 开发时打开DevTools
-  // mainWindow.webContents.openDevTools();
+  // DevTools: opt-in only (prevents auto-opening on startup)
+  if (process.env.ELECTRON_DEVTOOLS === '1') {
+    mainWindow.webContents.openDevTools();
+  }
 }
 
 app.whenReady().then(() => {
   db = new Database();
   createWindow();
+  startAutoBackup();
 
   app.on('activate', () => {
     if (BrowserWindow.getAllWindows().length === 0) {
@@ -50,6 +112,9 @@ app.whenReady().then(() => {
 });
 
 app.on('window-all-closed', () => {
+  if (backupInterval) {
+    clearInterval(backupInterval);
+  }
   if (process.platform !== 'darwin') {
     app.quit();
   }
@@ -105,3 +170,31 @@ ipcMain.handle('clipboard:write', async (event, text) => {
   clipboard.writeText(text);
   return true;
 });
+
+// Screen capture feature
+ipcMain.handle('screen:capture', async () => {
+  try {
+    const primaryDisplay = screen.getPrimaryDisplay();
+    const { width, height } = primaryDisplay.size;
+    const scaleFactor = primaryDisplay.scaleFactor;
+
+    const sources = await desktopCapturer.getSources({
+      types: ['screen'],
+      thumbnailSize: { width: width * scaleFactor, height: height * scaleFactor }
+    });
+
+    if (sources.length > 0) {
+      const thumbnail = sources[0].thumbnail;
+      return {
+        success: true,
+        image: thumbnail.toDataURL(),
+        width: thumbnail.getSize().width,
+        height: thumbnail.getSize().height
+      };
+    }
+    return { success: false, error: 'Failed to capture screen' };
+  } catch (e) {
+    console.error('Screen capture failed:', e);
+    return { success: false, error: e.message };
+  }
+});