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

const partiesRouter = require('./routes/parties');
const mirchiTypesRouter = require('./routes/mirchiTypes');
const lotsRouter = require('./routes/lots');
const transactionsRouter = require('./routes/transactions');
const jamaRouter = require('./routes/jama');
const pattiRouter = require('./routes/patti');

const app = express();
const PORT = process.env.PORT || 4000;

// Middleware
app.use(cors());
app.use(express.json());
app.use(express.urlencoded({ extended: true }));

// Request logging
app.use((req, res, next) => {
    console.log(`${new Date().toISOString()} - ${req.method} ${req.path}`);
    next();
});

// Routes
app.use('/api/parties', partiesRouter);
app.use('/api/mirchi-types', mirchiTypesRouter);
app.use('/api/lots', lotsRouter);
app.use('/api/transactions', transactionsRouter);
app.use('/api/jama', jamaRouter);
app.use('/api/patti', pattiRouter);

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

// Root endpoint
app.get('/', (req, res) => {
    res.json({
        message: 'Pattanshetty Inventory Management API',
        version: '1.0.0',
        endpoints: {
            parties: '/api/parties',
            mirchiTypes: '/api/mirchi-types',
            lots: '/api/lots',
            transactions: '/api/transactions'
        }
    });
});

// Error handling middleware
app.use((err, req, res, next) => {
    console.error('Error:', err);
    res.status(500).json({
        success: false,
        message: err.message || 'Internal server error'
    });
});

// 404 handler
app.use((req, res) => {
    res.status(404).json({
        success: false,
        message: 'Route not found'
    });
});

// Start server
app.listen(PORT, () => {
    console.log(`🚀 Server running on port ${PORT}`);
    console.log(`📍 API available at http://localhost:${PORT}`);
    console.log(`💚 Health check: http://localhost:${PORT}/health`);
});

module.exports = app;