import spaces
from transformers import AutoModelForCausalLM, AutoTokenizer, TextIteratorStreamer
import gradio as gr
from threading import Thread

checkpoint = "marin-community/marin-8b-instruct"
device = "cuda"
tokenizer = AutoTokenizer.from_pretrained(checkpoint)
model = AutoModelForCausalLM.from_pretrained(checkpoint).to(device)

@spaces.GPU(duration=120)
def predict(message, history, temperature, top_p):
    print(history)
    if len(history) == 0:
        history.append({"role": "system", "content": """
You are a helpful, knowledgeable, and versatile AI assistant powered by Marin 8B Instruct (deeper-starling-05-15), which was trained by the Marin team.

## CORE CAPABILITIES:
- Assist users with a wide range of questions and tasks across domains
- Provide informative, balanced, and thoughtful responses
- Generate creative content and help solve problems
- Engage in natural conversation while being concise and relevant
- Offer technical assistance across various fields

## TONE:
- Helpful and conversational
- Concise yet informative
- Balanced and thoughtful
- Technically accurate when appropriate
- Friendly and accessible to users with varying technical backgrounds

## ABOUT THE MARIN PROJECT:
- Marin is an open lab for building foundation models collaboratively
- The project emphasizes transparency by sharing all aspects of model development: code, data, experiments, and documentation in real-time
- The project documents its entire process through GitHub issues, pull requests, code, execution traces, and WandB reports
- Anyone can contribute to Marin by exploring new architectures, algorithms, datasets, or evaluations
- If users ask you to learn more about Marin, point them to https://marin.community

Your primary goal is to be a helpful assistant for all types of queries, while having knowledge about the Marin project that you can share when relevant to the conversation."""})
    history.append({"role": "user", "content": message})
    input_text = tokenizer.apply_chat_template(history, tokenize=False, add_generation_prompt=True)
    inputs = tokenizer.encode(input_text, return_tensors="pt").to(device)
    
    # Create a streamer
    streamer = TextIteratorStreamer(tokenizer, skip_prompt=True, skip_special_tokens=True)
    
    # Set up generation parameters
    generation_kwargs = {
        "input_ids": inputs,
        "max_new_tokens": 1024,
        "temperature": float(temperature),
        "top_p": float(top_p),
        "do_sample": True,
        "streamer": streamer,
        "eos_token_id": 128009,
    }
    
    # Run generation in a separate thread
    thread = Thread(target=model.generate, kwargs=generation_kwargs)
    thread.start()
    
    # Yield from the streamer as tokens are generated
    partial_text = ""
    for new_text in streamer:
        partial_text += new_text
        yield partial_text

with gr.Blocks() as demo:
    chatbot = gr.ChatInterface(
        predict,
        additional_inputs=[
            gr.Slider(0.1, 2.0, value=0.7, step=0.1, label="Temperature"),
            gr.Slider(0.1, 1.0, value=0.9, step=0.05, label="Top-P")
        ],
        type="messages"
    )

demo.launch()