const express = require('express');
const dbOps = require('./database');
const { closeBrowser } = require('./browser');
const routes = require('./routes');
const config = require('./config');

const app = express();

// Use routes
app.use('/', routes);

// Cleanup expired cache entries
async function cleanupExpiredCache() {
    const now = Date.now();
    const deleted = await dbOps.deleteExpired(now);
    if (deleted > 0) {
        console.log(`Cleaned up ${deleted} expired cache entries`);
    }
}

// Initialize database and start server
(async () => {
    try {
        await dbOps.init();
        console.log(`Database initialized: ${dbOps.getDbType()}`);

        // Periodic cache cleanup (every hour)
        setInterval(cleanupExpiredCache, 60 * 60 * 1000);

        // Initial cleanup on startup
        await cleanupExpiredCache();

        // Start server
        app.listen(config.PORT, '0.0.0.0', () => {
            console.log(`Playwright API server listening on port ${config.PORT}`);
            console.log(`Cache expiry: ${config.CACHE_EXPIRY_HOURS} hours`);
            console.log(`Database: ${dbOps.getDbType()}${dbOps.getDbType() === 'postgres' ? ` (${config.POSTGRES_HOST}:${config.POSTGRES_PORT}/${config.POSTGRES_DB})` : ` (${config.DB_PATH})`}`);
            console.log(`API Key authentication: ${config.API_KEY ? 'enabled' : 'disabled'}`);
        });
    } catch (error) {
        console.error('Failed to initialize:', error);
        process.exit(1);
    }
})();

// Graceful shutdown
process.on('SIGTERM', async () => {
    console.log('SIGTERM received, shutting down gracefully...');
    await closeBrowser();
    await dbOps.close();
    process.exit(0);
});

process.on('SIGINT', async () => {
    console.log('SIGINT received, shutting down gracefully...');
    await closeBrowser();
    await dbOps.close();
    process.exit(0);
});