import express from 'express';

const router = express.Router();

const CAPTURE_URL = process.env.CAPTURE_URL || 'http://capture:3001';

async function proxyRequest(method, path, body = null) {
  const options = {
    method,
    headers: { 'Content-Type': 'application/json' },
    signal: AbortSignal.timeout(8000),
  };
  if (body) options.body = JSON.stringify(body);

  const response = await fetch(`${CAPTURE_URL}${path}`, options);
  const text = await response.text();

  let data;
  try {
    data = JSON.parse(text);
  } catch {
    // Capture service returned non-JSON (HTML error page, plain text, etc.)
    data = { message: text.slice(0, 300) || '(empty response)' };
  }

  return { status: response.status, data };
}

// POST /start
router.post('/start', async (req, res, next) => {
  try {
    const { status, data } = await proxyRequest('POST', '/start', req.body);
    res.status(status).json(data);
  } catch (err) { next(err); }
});

// POST /stop
router.post('/stop', async (req, res, next) => {
  try {
    const { status, data } = await proxyRequest('POST', '/stop', req.body);
    res.status(status).json(data);
  } catch (err) { next(err); }
});

// GET /status
router.get('/status', async (req, res, next) => {
  try {
    const { status, data } = await proxyRequest('GET', '/status');
    res.status(status).json(data);
  } catch (err) { next(err); }
});

// GET /devices
router.get('/devices', async (req, res, next) => {
  try {
    const { status, data } = await proxyRequest('GET', '/devices');
    res.status(status).json(data);
  } catch (err) { next(err); }
});

export default router;