feat: Реализован полный CRUD для админ-панели и улучшена функциональность

- Portfolio CRUD: добавление, редактирование, удаление, переключение публикации
- Services CRUD: полное управление услугами с возможностью активации/деактивации
- Banner system: новая модель Banner с CRUD операциями и аналитикой кликов
- Telegram integration: расширенные настройки бота, обнаружение чатов, отправка сообщений
- Media management: улучшенная загрузка файлов с оптимизацией изображений и превью
- UI improvements: обновлённые админ-панели с rich-text редактором и drag&drop загрузкой
- Database: добавлена таблица banners с полями для баннеров и аналитики

server.js

@@ -1,27 +1,54 @@
 const express = require('express');
-const mongoose = require('mongoose');
+const { sequelize, testConnection } = require('./config/database');
 const session = require('express-session');
-const MongoStore = require('connect-mongo');
+const SequelizeStore = require('connect-session-sequelize')(session.Store);
 const path = require('path');
 const helmet = require('helmet');
 const compression = require('compression');
 const cors = require('cors');
 const morgan = require('morgan');
 const rateLimit = require('express-rate-limit');
+const i18n = require('i18n');
 require('dotenv').config();
 
 const app = express();
 
+// Настройка i18n
+i18n.configure({
+  locales: ['ko', 'en', 'ru', 'kk'],
+  defaultLocale: 'ru',
+  directory: path.join(__dirname, 'locales'),
+  objectNotation: true,
+  updateFiles: false,
+  syncFiles: false
+});
+
+// i18n middleware
+app.use(i18n.init);
+
+// Middleware для передачи переменных в шаблоны
+app.use((req, res, next) => {
+  const currentLang = req.session?.language || req.getLocale() || 'ru';
+  req.setLocale(currentLang);
+  
+  res.locals.locale = currentLang;
+  res.locals.__ = res.__;
+  res.locals.theme = req.session?.theme || 'light';
+  res.locals.currentLanguage = currentLang;
+  res.locals.currentPage = req.path.split('/')[1] || 'home';
+  next();
+});
+
 // Security middleware
 app.use(helmet({
   contentSecurityPolicy: {
     directives: {
       defaultSrc: ["'self'"],
-      styleSrc: ["'self'", "'unsafe-inline'", "https://fonts.googleapis.com", "https://cdnjs.cloudflare.com"],
-      fontSrc: ["'self'", "https://fonts.gstatic.com"],
-      scriptSrc: ["'self'", "'unsafe-inline'", "https://cdnjs.cloudflare.com"],
+      styleSrc: ["'self'", "'unsafe-inline'", "https://fonts.googleapis.com", "https://cdnjs.cloudflare.com", "https://cdn.jsdelivr.net", "https://unpkg.com", "https://cdn.tailwindcss.com"],
+      fontSrc: ["'self'", "https://fonts.gstatic.com", "https://cdnjs.cloudflare.com"],
+      scriptSrc: ["'self'", "'unsafe-inline'", "https://cdnjs.cloudflare.com", "https://unpkg.com", "https://cdn.tailwindcss.com"],
       imgSrc: ["'self'", "data:", "https:"],
-      connectSrc: ["'self'", "ws:", "wss:"]
+      connectSrc: ["'self'", "ws:", "wss:", "https://cdnjs.cloudflare.com", "https://cdn.jsdelivr.net", "https://unpkg.com", "https://fonts.googleapis.com", "https://fonts.gstatic.com", "https://cdn.tailwindcss.com"]
     }
   }
 }));
@@ -48,23 +75,30 @@ app.use('/uploads', express.static(path.join(__dirname, 'public/uploads')));
 app.set('view engine', 'ejs');
 app.set('views', path.join(__dirname, 'views'));
 
-// Database connection
-mongoose.connect(process.env.MONGODB_URI || 'mongodb://localhost:27017/smartsoltech', {
-  useNewUrlParser: true,
-  useUnifiedTopology: true,
-})
-.then(() => console.log('✓ MongoDB connected'))
-.catch(err => console.error('✗ MongoDB connection error:', err));
+// Layout engine
+const expressLayouts = require('express-ejs-layouts');
+app.use(expressLayouts);
+app.set('layout', 'layout'); // Default layout for main site
+app.set('layout extractScripts', true);
+app.set('layout extractStyles', true);
+
+// Database connection and testing
+testConnection();
+
+// Session store configuration
+const sessionStore = new SequelizeStore({
+  db: sequelize,
+  tableName: 'sessions',
+  checkExpirationInterval: 15 * 60 * 1000, // 15 minutes
+  expiration: 7 * 24 * 60 * 60 * 1000 // 7 days
+});
 
 // Session configuration
 app.use(session({
   secret: process.env.SESSION_SECRET || 'your-secret-key',
   resave: false,
   saveUninitialized: false,
-  store: MongoStore.create({
-    mongoUrl: process.env.MONGODB_URI || 'mongodb://localhost:27017/smartsoltech',
-    touchAfter: 24 * 3600 // lazy session update
-  }),
+  store: sessionStore,
   cookie: {
     secure: process.env.NODE_ENV === 'production',
     httpOnly: true,
@@ -80,8 +114,32 @@ app.use('/api/services', require('./routes/services'));
 app.use('/api/calculator', require('./routes/calculator'));
 app.use('/api/contact', require('./routes/contact'));
 app.use('/api/media', require('./routes/media'));
+app.use('/api/admin', require('./routes/api/admin'));
 app.use('/admin', require('./routes/admin'));
 
+// Language switching routes
+app.get('/lang/:language', (req, res) => {
+  const { language } = req.params;
+  const supportedLanguages = ['ko', 'en', 'ru', 'kk'];
+  
+  if (supportedLanguages.includes(language)) {
+    req.setLocale(language);
+    req.session.language = language;
+  }
+  
+  const referer = req.get('Referer') || '/';
+  res.redirect(referer);
+});
+
+// Theme switching routes
+app.get('/theme/:theme', (req, res) => {
+  const { theme } = req.params;
+  if (['light', 'dark'].includes(theme)) {
+    req.session.theme = theme;
+  }
+  res.json({ success: true, theme: req.session.theme });
+});
+
 // PWA Service Worker
 app.get('/sw.js', (req, res) => {
   res.sendFile(path.join(__dirname, 'public', 'sw.js'));
@@ -95,27 +153,47 @@ app.get('/manifest.json', (req, res) => {
 // Error handling middleware
 app.use((err, req, res, next) => {
   console.error(err.stack);
-  res.status(500).json({
-    success: false,
+  res.status(500).render('error', {
+    title: 'Error',
+    settings: {},
     message: process.env.NODE_ENV === 'production' 
       ? 'Something went wrong!' 
-      : err.message
+      : err.message,
+    currentPage: 'error'
   });
 });
 
 // 404 handler
 app.use((req, res) => {
-  res.status(404).render('404', {
-    title: '404 - Страница не найдена',
-    message: 'Запрашиваемая страница не найдена'
+  res.status(404).render('error', {
+    title: '404 - 페이지를 찾을 수 없습니다',
+    settings: {},
+    message: '요청하신 페이지를 찾을 수 없습니다',
+    currentPage: 'error'
   });
 });
 
 const PORT = process.env.PORT || 3000;
 
-app.listen(PORT, () => {
-  console.log(`🚀 Server running on port ${PORT}`);
-  console.log(`🌐 Visit: http://localhost:${PORT}`);
-});
+// Sync database and start server
+async function startServer() {
+  try {
+    // Sync all models with database
+    await sequelize.sync({ force: false });
+    console.log('✓ Database synchronized');
+    
+    // Create session table
+    await sessionStore.sync();
+    console.log('✓ Session store synchronized');
+    
+    app.listen(PORT, () => {
+      console.log(`🚀 Server running on port ${PORT}`);
+      console.log(`🌐 Visit: http://localhost:${PORT}`);
+    });
+  } catch (error) {
+    console.error('✗ Failed to start server:', error);
+    process.exit(1);
+  }
+}
 
-module.exports = app;
+startServer();