// routes/twilioCallTest.js
// Twilio voice + status webhooks for /calltest.

import express from 'express';

import { validateTwilioSignature } from '../integrations/twilio/client.js';
import { logger } from '../utils/logger.js';
import {
  getWebhookBaseUrl,
  resolveCallTestWebhookUrl,
} from '../services/callTest/config.js';
import {
  handleStatusCallback,
  handleVoiceWebhook,
  isCallTestConfigured,
} from '../services/callTest/callTestService.js';

const router = express.Router();

function verifyTwilio(req, res, next) {
  if (!isCallTestConfigured()) {
    return res.status(503).send('Call test not configured');
  }

  const signature = req.get('X-Twilio-Signature') || req.get('x-twilio-signature');
  const url = resolveCallTestWebhookUrl(req);
  const params = req.body || {};

  if (!url) {
    return next();
  }

  try {
    if (!validateTwilioSignature(signature, url, params)) {
      logger(
        'calltest:webhook',
        `Invalid Twilio signature for ${req.originalUrl} ` +
          `(validated as ${url}, base=${getWebhookBaseUrl()}, bodyKeys=${Object.keys(params).length})`,
        'warn',
      );
      return res.status(403).send('Forbidden');
    }
  } catch (err) {
    logger('calltest:webhook', `Signature check error: ${err.message}`, 'error');
    return res.status(503).send('Not configured');
  }

  return next();
}

router.post('/twilio/calltest/voice', verifyTwilio, (req, res) => {
  const testId = req.query.testId;
  const mode = req.query.mode === 'store' ? 'store' : 'dial';
  const step = String(req.query.step || '').trim();

  if (!testId || !step) {
    return res.status(400).type('text/xml').send(
      '<?xml version="1.0" encoding="UTF-8"?><Response><Say>Missing test parameters.</Say><Hangup/></Response>',
    );
  }

  logger('calltest:webhook', `Voice testId=${testId} mode=${mode} step=${step}`, 'info');

  const twiml = handleVoiceWebhook(testId, mode, step);
  res.type('text/xml').send(twiml);
});

router.post('/twilio/calltest/status', verifyTwilio, async (req, res) => {
  const testId = req.query.testId;
  if (!testId) {
    return res.status(400).send('Missing testId');
  }

  logger(
    'calltest:webhook',
    `Status testId=${testId} CallStatus=${req.body?.CallStatus} CallSid=${req.body?.CallSid}`,
    'info',
  );

  try {
    await handleStatusCallback(testId, req.body || {});
    res.status(200).send('OK');
  } catch (err) {
    logger('calltest:webhook', `Status handler error: ${err.message}`, 'error');
    res.status(500).send('Error');
  }
});

export default router;