import express from 'express';
import cors from 'cors';
import path from 'path';
import dotenv from 'dotenv';

import authRoutes from './routes/auth.routes.js';
import customerRoutes from './routes/customer.routes.js';
import addressRoutes from './routes/address.routes.js';
import bankcardRoutes from './routes/bankcard.routes.js';
import documentRoutes from './routes/document.routes.js';
import meterRoutes from './routes/meter.routes.js';
import stressfreiEmailRoutes from './routes/stressfreiEmail.routes.js';
import contractRoutes from './routes/contract.routes.js';
import platformRoutes from './routes/platform.routes.js';
import cancellationPeriodRoutes from './routes/cancellation-period.routes.js';
import contractDurationRoutes from './routes/contract-duration.routes.js';
import providerRoutes from './routes/provider.routes.js';
import tariffRoutes from './routes/tariff.routes.js';
import userRoutes from './routes/user.routes.js';
import uploadRoutes from './routes/upload.routes.js';
import developerRoutes from './routes/developer.routes.js';
import contractCategoryRoutes from './routes/contractCategory.routes.js';
import contractTaskRoutes from './routes/contractTask.routes.js';
import appSettingRoutes from './routes/appSetting.routes.js';
import emailProviderRoutes from './routes/emailProvider.routes.js';
import cachedEmailRoutes from './routes/cachedEmail.routes.js';
import invoiceRoutes from './routes/invoice.routes.js';
import contractHistoryRoutes from './routes/contractHistory.routes.js';
import auditLogRoutes from './routes/auditLog.routes.js';
import gdprRoutes from './routes/gdpr.routes.js';
import consentPublicRoutes from './routes/consent-public.routes.js';
import emailLogRoutes from './routes/emailLog.routes.js';
import pdfTemplateRoutes from './routes/pdfTemplate.routes.js';
import birthdayRoutes from './routes/birthday.routes.js';
import { auditContextMiddleware } from './middleware/auditContext.js';
import { auditMiddleware } from './middleware/audit.js';

dotenv.config();

const app = express();
const PORT = process.env.PORT || 3001;

// Middleware
app.use(cors());
app.use(express.json());

// Audit-Logging Middleware (DSGVO-konform)
app.use(auditContextMiddleware);
app.use(auditMiddleware);

// Statische Dateien für Uploads
app.use('/api/uploads', express.static(path.join(process.cwd(), 'uploads')));

// Öffentliche Routes (OHNE Authentifizierung)
app.use('/api/public/consent', consentPublicRoutes);

// Routes
app.use('/api/auth', authRoutes);
app.use('/api/customers', customerRoutes);
app.use('/api/addresses', addressRoutes);
app.use('/api/bank-cards', bankcardRoutes);
app.use('/api/documents', documentRoutes);
app.use('/api/meters', meterRoutes);
app.use('/api/stressfrei-emails', stressfreiEmailRoutes);
app.use('/api/contracts', contractRoutes);
app.use('/api/platforms', platformRoutes);
app.use('/api/cancellation-periods', cancellationPeriodRoutes);
app.use('/api/contract-durations', contractDurationRoutes);
app.use('/api/providers', providerRoutes);
app.use('/api/tariffs', tariffRoutes);
app.use('/api/users', userRoutes);
app.use('/api/upload', uploadRoutes);
app.use('/api/developer', developerRoutes);
app.use('/api/contract-categories', contractCategoryRoutes);
app.use('/api', contractTaskRoutes);
app.use('/api/settings', appSettingRoutes);
app.use('/api/email-providers', emailProviderRoutes);
app.use('/api', cachedEmailRoutes);
app.use('/api/energy-details', invoiceRoutes);
app.use('/api', contractHistoryRoutes);
app.use('/api/audit-logs', auditLogRoutes);
app.use('/api/gdpr', gdprRoutes);
app.use('/api/email-logs', emailLogRoutes);
app.use('/api/pdf-templates', pdfTemplateRoutes);
app.use('/api/birthdays', birthdayRoutes);

// Health check
app.get('/api/health', (req, res) => {
  res.json({ status: 'ok', timestamp: new Date().toISOString() });
});

// Production: Serve frontend static files
if (process.env.NODE_ENV === 'production') {
  const publicPath = path.join(process.cwd(), 'public');

  // Serve static files
  app.use(express.static(publicPath));

  // SPA fallback: serve index.html for all non-API routes
  app.get('*', (req, res, next) => {
    // Skip API routes
    if (req.path.startsWith('/api')) {
      return next();
    }
    res.sendFile(path.join(publicPath, 'index.html'));
  });
}

// Error handling
app.use((err: Error, req: express.Request, res: express.Response, next: express.NextFunction) => {
  console.error(err.stack);
  res.status(500).json({ success: false, error: 'Interner Serverfehler' });
});

app.listen(PORT, () => {
  console.log(`Server läuft auf Port ${PORT}`);
});