import os
import json
import requests
from flask import Flask, request, Response, stream_with_context, render_template_string

app = Flask(__name__)

# हगिंग फेस 'Secrets'
API_KEY = os.environ.get("YOUR_VEDIKA_API_KEY") 
BASE_URL = os.environ.get("BASE_URL")
MODEL_ID = os.environ.get("MODEL_ID", "google/gemma-3n-e2b-it")

if BASE_URL and not BASE_URL.endswith("/chat/completions"):
    INVOKE_URL = f"{BASE_URL.rstrip('/')}/chat/completions"
else:
    INVOKE_URL = BASE_URL or "https://integrate.api.nvidia.com/v1/chat/completions"

@app.route('/')
def home():
    try:
        with open('index.html', 'r', encoding='utf-8') as f:
            html_content = f.read()
        return render_template_string(html_content)
    except Exception as e:
        return f"index.html file missing! Error: {str(e)}"

@app.route('/api/chat', methods=['POST'])
def chat():
    data = request.get_json() or {}
    user_message = data.get("message", "")
    attachments = data.get("attachments", []) 
    system_prompt = data.get("system_prompt", "")
    max_tokens = data.get("max_tokens", 4096)
    temperature = data.get("temperature", 0.6)

    messages = []

    # 1. सिस्टम प्रॉम्प्ट (System Instruction) सेट करना
    if system_prompt.strip():
        messages.append({"role": "system", "content": system_prompt})

    # 2. मल्टीमोडल कंटेंट एरे तैयार करना
    content_payload = []
    if user_message.strip():
        content_payload.append({"type": "text", "text": user_message})
        
    for att in attachments:
        att_type = att.get("type")
        b64_data = att.get("data")
        
        if att_type == "image":
            content_payload.append({"type": "image_url", "image_url": {"url": f"data:image/jpeg;base64,{b64_data}"}})
        elif att_type in ["audio", "file"]:
            # ऑडियो या अन्य फ़ाइलों के लिए
            content_payload.append({"type": "input_audio", "input_audio": {"data": b64_data, "format": "wav"}})

    if not content_payload:
        content_payload.append({"type": "text", "text": "Hello"})

    # यूज़र का मैसेज जोड़ना
    messages.append({"role": "user", "content": content_payload})

    headers = {
        "Authorization": f"Bearer {API_KEY}",
        "Accept": "text/event-stream"
    }

    payload = {
        "model": MODEL_ID,
        "messages": messages,
        "max_tokens": int(max_tokens),
        "temperature": float(temperature),
        "top_p": 0.70,
        "stream": True
    }

    response = requests.post(INVOKE_URL, headers=headers, json=payload, stream=True)

    def generate():
        for line in response.iter_lines():
            if line:
                decoded_line = line.decode("utf-8")
                if decoded_line.startswith("data: "):
                    yield decoded_line + "\n\n"
                    
    return Response(stream_with_context(generate()), mimetype='text/event-stream')

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=7860)