import gradio as gr
from huggingface_hub import InferenceClient

"""
For more information on `huggingface_hub` Inference API support, please check the docs: https://huggingface.co/docs/huggingface_hub/v0.22.2/en/guides/inference
"""
client = InferenceClient("HuggingFaceH4/zephyr-7b-beta")


def respond(
    message,
    history: list[tuple[str, str]],
    system_message,
    max_tokens,
    temperature,
    top_p,
):
    system_message = "Welcome to the English Pop Music Advisor Chatbot! Whether you're looking for upbeat tunes to lift your spirits or soulful ballads for a reflective moment, I'm here to recommend English pop songs that match your mood. Feel free to tell me how you're feeling or ask for suggestions!"
    messages = [{"role": "system", "content": system_message}]

    for val in history:
        if val[0]:
            messages.append({"role": "user", "content": val[0]})
        if val[1]:
            messages.append({"role": "assistant", "content": val[1]})

    messages.append({"role": "user", "content": message})

    response = ""

    for message in client.chat_completion(
        messages,
        max_tokens=max_tokens,
        stream=True,
        temperature=temperature,
        top_p=top_p,
    ):
        token = message.choices[0].delta.content

        response += token
        yield response

"""
For information on how to customize the ChatInterface, peruse the gradio docs: https://www.gradio.app/docs/chatinterface
"""
demo = gr.ChatInterface(
    respond,
    additional_inputs=[
        gr.Textbox(value = "Welcome to the English Pop Music Advisor Chatbot! Whether you're looking for upbeat tunes to lift your spirits or soulful ballads for a reflective moment, I'm here to recommend English pop songs that match your mood. Feel free to tell me how you're feeling or ask for suggestions!"),
        gr.Slider(minimum=1, maximum=2048, value=512, step=1, label="Max new tokens"),
        gr.Slider(minimum=0.1, maximum=4.0, value=0.7, step=0.1, label="Temperature"),
        gr.Slider(
            minimum=0.1,
            maximum=1.0,
            value=0.95,
            step=0.05,
            label="Top-p (nucleus sampling)",
        ),
    ],

    examples = [ 
        ["I'm in the mood for some upbeat music to energize me."],
        ["Could you recommend a relaxing English pop song to unwind?"],
        ["What's a good English pop song for when I'm feeling nostalgic?"]
    ],
    title = 'English Pop Music Advisor Chatbot 🎵'
)


if __name__ == "__main__":
    demo.launch()