const axios = require('axios');

async function chatai(question, { system_prompt = null, model = 'grok-3-mini' } = {}) {
    try {
        const _model = ['gpt-4.1-nano', 'gpt-4.1-mini', 'gpt-4.1', 'o4-mini', 'deepseek-r1', 'deepseek-v3', 'claude-3.7', 'gemini-2.0', 'grok-3-mini', 'qwen-qwq-32b', 'gpt-4o', 'o3', 'gpt-4o-mini', 'llama-3.3'];
        
        if (!question) throw new Error('Question is required');
        if (!_model.includes(model)) throw new Error(`Available models: ${_model.join(', ')}`);
        
        const { data } = await axios.post('https://api.appzone.tech/v1/chat/completions', {
            messages: [
                ...(system_prompt ? [{
                    role: 'system',
                    content: [
                        {
                            type: 'text',
                            text: system_prompt
                        }
                    ]
                }] : []),
                {
                    role: 'user',
                    content: [
                        {
                            type: 'text',
                            text: question
                        }
                    ]
                }
            ],
            model: model,
            isSubscribed: true
        }, {
            headers: {
                authorization: 'Bearer az-chatai-key',
                'content-type': 'application/json',
                'user-agent': 'okhttp/4.9.2',
                'x-app-version': '3.0',
                'x-requested-with': 'XMLHttpRequest',
                'x-user-id': '$RCAnonymousID:84947a7a4141450385bfd07a66c3b5c4'
            }
        });
        
        let fullText = '';
        const lines = data.split('\n\n').map(line => line.substring(6));
        for (const line of lines) {
            if (line === '[DONE]') continue;
            try {
                const d = JSON.parse(line);
                fullText += d.choices[0].delta.content;
            } catch (e) {}
        }
        
        const thinkMatch = fullText.match(/<think>([\s\S]*?)<\/think>/);
        return {
            think: thinkMatch ? thinkMatch[1].trim() : '',
            response: fullText.replace(/<think>[\s\S]*?<\/think>/, '').trim()
        };
    } catch (error) {
        throw new Error(error.message);
    }
}

// Usage:
const resp = await chatai('hi! what ai model are you using?', { model: 'grok-3-mini' });
console.log(resp);