// Fetching chat history
    const chatId = req.body.chat_id;
    
    console.log(`Chat ID: ${chatId.id}`);

    const context = await client.request(FETCH_CHAT_CONTEXT, { uuid: chatId.id });

    let history = [{ role: 'system', content: 'Initiating ReSponse CX.' }];

    // Processing chat messages
    context.channel_thread[0].messages.forEach(message => {
      let role = message.username !== 'ReSponseAI' ? 'user' : 'assistant';

      let content = message.image_url === null ? message.body : [
        { "type": "text", "text": message.body },
        { "type": "image_url", "image_url": { "url": message.image_url } }
      ];

      history.push({ role, content });
    });

    // Setting up request to OpenAI
    let options = {
      method: 'POST',
      headers: { 'Content-Type': 'application/json', 'Authorization': process.env.OPEN_AI },
      body: JSON.stringify({ 
        model: 'gpt-4-vision-preview', 
        temperature: 1.2,
        max_tokens: 300,
        messages: history 
      }),
      redirect: 'follow'
    };