#!/usr/bin/env bun
import { readFile } from 'fs/promises';
import { LoggerFactory } from '@techniker-me/logger';

const logger = LoggerFactory.getLogger('FrontendServer');

const PORT = 3001;

const server = Bun.serve({
  port: PORT,
  async fetch(request) {
    const url = new URL(request.url);

    // Serve the HTML frontend
    if (url.pathname === '/' || url.pathname === '/index.html') {
      try {
        const html = await readFile('./frontend.html', 'utf-8');
        return new Response(html, {
          headers: {
            'Content-Type': 'text/html',
            'Cache-Control': 'no-cache'
          }
        });
      } catch (error) {
        logger.error('Failed to read frontend.html:', error);
        return new Response('Frontend file not found', { status: 404 });
      }
    }

    // Health check endpoint
    if (url.pathname === '/health') {
      return new Response(JSON.stringify({
        status: 'ok',
        frontend: 'serving',
        speedtest_server: 'http://localhost:8080'
      }), {
        headers: { 'Content-Type': 'application/json' }
      });
    }

    return new Response('Not found', { status: 404 });
  }
});

logger.info(`Frontend server started on http://localhost:${PORT}`);
logger.info(`Speedtest backend server expected on http://localhost:8080`);
logger.info(`Open http://localhost:${PORT} in your browser to run the speed test`);

process.on('SIGINT', () => {
  logger.info('Shutting down frontend server...');
  server.stop();
  process.exit(0);
});

process.on('SIGTERM', () => {
  logger.info('Shutting down frontend server...');
  server.stop();
  process.exit(0);
});