const PUBLIC_DIR = './public'
const PORT = process.env.PORT ? Number(process.env.PORT) : 3000

function getContentType(path) {
  if (path.endsWith('.html')) return 'text/html'
  if (path.endsWith('.js')) return 'application/javascript'
  if (path.endsWith('.css')) return 'text/css'
  if (path.endsWith('.json')) return 'application/json'
  if (path.endsWith('.png')) return 'image/png'
  if (path.endsWith('.jpg') || path.endsWith('.jpeg')) return 'image/jpeg'
  if (path.endsWith('.svg')) return 'image/svg+xml'
  if (path.endsWith('.woff2')) return 'font/woff2'
  if (path.endsWith('.woff')) return 'font/woff'
  if (path.endsWith('.ttf')) return 'font/ttf'
  return 'application/octet-stream'
}

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

    if (url.pathname === '/health') {
      return new Response('OK', { status: 200 })
    }

    const filePath = url.pathname === '/' ? '/index.html' : url.pathname
    const fullPath = `${PUBLIC_DIR}${filePath}`
    const file = Bun.file(fullPath)

    if (await file.exists()) {
      return new Response(file, {
        headers: { 'Content-Type': getContentType(filePath) },
      })
    }

    // SPA fallback
    const indexFile = Bun.file(`${PUBLIC_DIR}/index.html`)
    if (await indexFile.exists()) {
      return new Response(indexFile, {
        headers: { 'Content-Type': 'text/html' },
      })
    }

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

console.log(`Server running on http://localhost:${PORT}`)