ideas-generator/server/index.js

const express = require('express');
const cors = require('cors');
const helmet = require('helmet');
const morgan = require('morgan');
require('dotenv').config();

const app = express();
const PORT = process.env.PORT || 3000;

// Security middleware
app.use(helmet());

// CORS middleware - permissive for development
app.use(cors({
    origin: process.env.NODE_ENV === 'development' ? true : ['http://localhost:8080', 'https://ai-sandbox.oliver.solutions'],
    credentials: true
}));

// Request logging
app.use(morgan('combined'));

// Body parsing middleware
app.use(express.json({ limit: '10mb' }));
app.use(express.urlencoded({ extended: true, limit: '10mb' }));

// Health check endpoint
app.get('/health', (req, res) => {
    res.json({ 
        status: 'ok', 
        timestamp: new Date().toISOString(),
        environment: process.env.NODE_ENV,
        version: '1.0.0',
        service: 'Ideas Generator 2025 Backend'
    });
});

// API routes placeholder
app.use('/api', (req, res) => {
    res.json({ 
        message: 'Ideas Generator 2025 API',
        version: '1.0.0',
        status: 'Under Development',
        endpoints: {
            health: '/health',
            api: '/api',
            chat: '/api/chat (coming soon)',
            assistants: '/api/assistants (coming soon)',
            conversations: '/api/conversations (coming soon)'
        }
    });
});

// Basic error handling middleware
app.use((err, req, res, next) => {
    console.error('Error:', err.stack);
    res.status(500).json({ 
        error: 'Internal Server Error',
        message: process.env.NODE_ENV === 'development' ? err.message : 'Something went wrong!'
    });
});

// 404 handler
app.use((req, res) => {
    res.status(404).json({ 
        error: 'Not Found',
        message: `Route ${req.originalUrl} not found`,
        availableRoutes: ['/health', '/api']
    });
});

// Start server
app.listen(PORT, () => {
    console.log(`🚀 Ideas Gen 2025 Server running on port ${PORT}`);
    console.log(`🏥 Health check: http://localhost:${PORT}/health`);
    console.log(`🔧 API endpoint: http://localhost:${PORT}/api`);
    console.log(`📊 Environment: ${process.env.NODE_ENV}`);
    console.log(`📁 Database: ${process.env.DATABASE_NAME || 'Not configured'}`);
    
    // Log important environment status
    if (!process.env.OPENAI_API_KEY || process.env.OPENAI_API_KEY.includes('your-actual')) {
        console.warn('⚠️  WARNING: OpenAI API key not configured! Update .env file.');
    } else {
        console.log('✅ OpenAI API key configured');
    }
});

// Graceful shutdown
process.on('SIGINT', () => {
    console.log('\n🛑 Received SIGINT. Graceful shutdown...');
    process.exit(0);
});

process.on('SIGTERM', () => {
    console.log('\n🛑 Received SIGTERM. Graceful shutdown...');
    process.exit(0);
});