import gradio as gr
from gpt4all import GPT4All
from huggingface_hub import hf_hub_download
from diarizationlm import utils

title = "DiarizationLM GGUF inference on CPU"

description = """
A demo of the DiarizationLM model finetuned from Llama 3. In this demo, we run a 4-bit quantized GGUF model on CPU.

To learn more about DiarizationLM, check our paper: https://arxiv.org/abs/2401.03506
"""

model_path = "models"
model_name = "q4_k_m.gguf"
prompt_suffix = " --> "
completion_suffix = " [eod]"

hf_hub_download(repo_id="google/DiarizationLM-8b-Fisher-v2", filename=model_name, local_dir=model_path)

print("Start the model init process")
model = GPT4All(model_name=model_name,
                model_path=model_path,
                allow_download = False,
                device="cpu")
print("Finish the model init process")

def generater(message, history):
    prompt = message + prompt_suffix
    max_new_tokens = round(len(prompt) / 3.0 * 1.2)
    outputs = []
    for token in model.generate(prompt=prompt,
                                temp=0.1,
                                top_k=50,
                                top_p=0.5,
                                max_tokens=max_new_tokens,
                                streaming=True):
        outputs.append(token)
        completion = "".join(outputs)
        yield completion
        if completion.endswith(" [eod]"):
            break
    transferred_completion = utils.transfer_llm_completion(completion, message)
    yield transferred_completion

print("Create chatbot")
chatbot = gr.Chatbot()
print("Created chatbot")

iface = gr.ChatInterface(
    fn = generater,
    title=title,
    description = description,
    chatbot=chatbot,
    additional_inputs=[],
    examples=[
        ["<speaker:1> Hello, my name is Tom. May I speak to Laura <speaker:2> please? Hello, this is Laura. <speaker:1> Hi Laura, how are you? This is <speaker:2> Tom. Hi Tom, I haven't seen you for a <speaker:1> while."],
        ["<speaker:1> This demo looks really <speaker:2> good! Thanks, I am glad to hear that."],
   ]
)

with gr.Blocks() as demo:
    iface.render()


if __name__ == "__main__":
    demo.queue(max_size=3).launch()