/* eslint-disable no-console */
import { createReadStream, statSync } from 'node:fs'
import http from 'node:http'
import path from 'node:path'

// Tiny static-file server that serves the canonical Crewli prototype
// HTML so Playwright visual baselines can render it in real Chromium.
//
// Why not http-server / serve / similar?
// --------------------------------------
// They'd add ~5 MB and another supply-chain hop for a 30-line problem.
// The prototype directory has 9 files; we serve them with mime types
// for .html, .css, .js, .jsx (text/babel handles via the HTML loader).
// Node's built-in http + fs is sufficient.
//
// Started by playwright-ct.config.ts via webServer config.

const ROOT = path.resolve(
  process.cwd(),
  '..',
  '..',
  'resources',
  'Crewli - Artist  Timetable Management',
)
const PORT = Number(process.env.PROTOTYPE_PORT ?? 5179)

const MIME = {
  '.html': 'text/html; charset=utf-8',
  '.js': 'application/javascript; charset=utf-8',
  '.jsx': 'text/babel; charset=utf-8',
  '.mjs': 'application/javascript; charset=utf-8',
  '.css': 'text/css; charset=utf-8',
  '.json': 'application/json; charset=utf-8',
  '.svg': 'image/svg+xml',
  '.png': 'image/png',
  '.ico': 'image/x-icon',
}

const server = http.createServer((req, res) => {
  // Strip query / hash before path resolution.
  const urlPath = (req.url ?? '/').split('?')[0].split('#')[0]
  const safe = path.normalize(urlPath).replace(/^(\.\.[\\/])+/, '')
  const filePath = path.join(ROOT, safe === '/' ? 'crewli-timetable.html' : safe)

  // Reject path traversal.
  if (!filePath.startsWith(ROOT)) {
    res.statusCode = 403
    res.end('Forbidden')
    return
  }

  try {
    const stat = statSync(filePath)
    if (stat.isDirectory()) {
      res.statusCode = 404
      res.end('Not found')
      return
    }
    const ext = path.extname(filePath).toLowerCase()
    res.setHeader('Content-Type', MIME[ext] ?? 'application/octet-stream')
    res.setHeader('Cache-Control', 'no-store')
    createReadStream(filePath).pipe(res)
  }
  catch {
    res.statusCode = 404
    res.end(`Not found: ${urlPath}`)
  }
})

server.listen(PORT, '127.0.0.1', () => {
  console.log(`[prototype-server] http://127.0.0.1:${PORT}/ -> ${ROOT}`)
})