/*
* Lokasi: features/image-describe.js
* Versi: v1
*/

const axios = require('axios');
const crypto = require('crypto');

async function sendCallback(url, payload) {
  try {
    await axios.post(url, payload, { headers: { 'Content-Type': 'application/json' } });
  } catch (error) {
    console.error('Callback failed:', error.message);
  }
}

module.exports = async function(req, res) {
  const { imageUrl, prompt, jobId, callbackUrl, callbackKey } = req.body;

  if (!imageUrl || !prompt || !jobId || !callbackUrl || !callbackKey) {
    return res.status(400).json({ error: 'Missing required parameters.' });
  }

  res.status(202).json({ message: 'Job accepted and is being processed.' });

  try {
    const visitorId = crypto.randomBytes(16).toString('hex');
    const headerF = crypto.createHash('md5').update(visitorId).digest('hex');

    const chatPayload = {
      message: prompt,
      image: imageUrl,
      history: [],
      lang: 'en'
    };

    const chatResponse = await axios.post(
      'https://imagedescriber.online/api/chat-with-image',
      chatPayload,
      {
        headers: {
          'Content-Type': 'application/json',
          'f': headerF,
          'User-Agent': 'Mozilla/5.0 (Linux; Android 10; RMX2185 Build/QP1A.190711.020) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.7151.118 Mobile Safari/537.36',
          'Referer': 'https://imagedescriber.online/tools/chat-with-image-ai'
        }
      }
    );

    await sendCallback(callbackUrl, {
      jobId,
      callbackKey,
      status: 'success',
      result: { response: chatResponse.data },
    });
  } catch (e) {
    await sendCallback(callbackUrl, {
      jobId,
      callbackKey,
      status: 'failed',
      result: { error: e.message || 'An unknown error occurred during image description.' },
    });
  }
};