from huggingface_hub import InferenceClient
import gradio as gr
import random
import prompts

client = InferenceClient("mistralai/Mixtral-8x7B-Instruct-v0.1")

def format_prompt(message, history):

  prompt = "<s>"
  for user_prompt, bot_response in history:
    print (bot_response)
    prompt += f"[INST] {user_prompt} [/INST]"
    prompt += f" {bot_response}</s> "
  prompt += f"[INST] {message} [/INST]"
  return prompt

def generate(prompt,history,max_new_tokens,seed):
    #seed = random.randint(1,9999999999999)
    print(seed)
    system_prompt = prompts.SONG_WRITER.format(history=history)
    generate_kwargs = dict(
        temperature=0.9,
        max_new_tokens=max_new_tokens,
        top_p=0.95,
        repetition_penalty=1.0,
        do_sample=True,
        seed=seed,
    )

    formatted_prompt = format_prompt(f"{system_prompt}, {prompt}", history)
    stream = client.text_generation(formatted_prompt, **generate_kwargs, stream=True, details=True, return_full_text=False)
    output = ""

    for response in stream:
        output += response.token.text
        yield output

additional_inputs = [        
    gr.Slider(
        label="Max new tokens",
        value=4096,
        minimum=10,
        maximum=1048*10,
        step=64,
        interactive=True,
        info="The maximum numbers of words the chatbot will return",
    ),
    
    gr.Slider(
        label="Seed",
        value=random.randint(1,9999999999999999),
        minimum=0,
        maximum=9999999999999999,
        step=64,
        interactive=True,
        info="Each seed produces a different output to a single prompt",
    ),
]
examples=[["Write a heavy metal rock song about horses (1000 words)"],
          ["Write a really long song about an elephant love story.  The elephants have been together for a long time. (3000 words)"],
          ["Write a slammin rap song about about a gangster fising trip."],
          ["Use the same lyrics as above, but add more words to each verse"],
         ]
chat=gr.ChatInterface(
    fn=generate,
    chatbot=gr.Chatbot(show_label=False, show_share_button=False, show_copy_button=True, layout="panel"),
    title="Song Writer",
    additional_inputs=additional_inputs,
    examples=examples,
    concurrency_limit=20,
).outpupt([gr.Audio()])
chat.launch(show_api=False)