#!/usr/bin/env node

/**
 * CHORUS Services Website - Simplified Health Check Script
 * Validates that Next.js server is running correctly
 * Used by Docker HEALTHCHECK instruction
 */

const http = require('http');
const process = require('process');

const PORT = process.env.PORT || 80;
const TIMEOUT = 5000; // 5 seconds

/**
 * Make HTTP request to check service health
 * @returns {Promise<boolean>} - True if healthy
 */
function checkHealth() {
    return new Promise((resolve) => {
        const options = {
            hostname: '127.0.0.1',  // Force IPv4 instead of localhost
            port: PORT,
            path: '/',
            method: 'HEAD',
            timeout: TIMEOUT,
            headers: {
                'User-Agent': 'HealthCheck/1.0'
            }
        };

        const req = http.request(options, (res) => {
            const isHealthy = res.statusCode >= 200 && res.statusCode < 400;
            resolve(isHealthy);
        });

        req.on('error', () => {
            resolve(false);
        });

        req.on('timeout', () => {
            req.destroy();
            resolve(false);
        });

        req.setTimeout(TIMEOUT);
        req.end();
    });
}

/**
 * Main health check function
 */
async function main() {
    try {
        const healthy = await checkHealth();
        process.exit(healthy ? 0 : 1);
    } catch (error) {
        process.exit(1);
    }
}

// Handle process signals
process.on('SIGTERM', () => process.exit(1));
process.on('SIGINT', () => process.exit(1));

// Run health check
main();