/**
 * Minimal static file server for e2e tests.
 * Serves the test page and ribbit dist files.
 */
const http = require('http');
const fs = require('fs');
const path = require('path');

const MIME = {
    '.html': 'text/html',
    '.js': 'application/javascript',
    '.css': 'text/css',
    '.map': 'application/json',
};

function createServer(port = 9999) {
    const distDir = path.join(__dirname, '..', '..', 'dist', 'ribbit');
    const testDir = __dirname;

    const server = http.createServer((req, res) => {
        let filePath;
        if (req.url === '/' || req.url === '/index.html') {
            filePath = path.join(testDir, 'index.html');
        } else if (req.url.startsWith('/ribbit/')) {
            filePath = path.join(distDir, req.url.replace('/ribbit/', ''));
        } else {
            res.writeHead(404);
            res.end('Not found');
            return;
        }

        const ext = path.extname(filePath);
        const mime = MIME[ext] || 'application/octet-stream';

        try {
            const content = fs.readFileSync(filePath);
            res.writeHead(200, { 'Content-Type': mime });
            res.end(content);
        } catch {
            res.writeHead(404);
            res.end('Not found');
        }
    });

    return {
        start() {
            return new Promise((resolve) => {
                server.listen(port, () => resolve());
            });
        },
        stop() {
            return new Promise((resolve) => {
                server.close(() => resolve());
            });
        },
        url: `http://localhost:${port}`,
    };
}

module.exports = { createServer };