app.py

import gradio as gr
from huggingface_hub import InferenceClient
from config.prompts import GUIDE_PERSONA, TIME_PERIODS
from models.state import TimelineState

client = InferenceClient("HuggingFaceH4/zephyr-7b-beta")
timeline_state = TimelineState()

def get_system_message():
    current_period = TIME_PERIODS[timeline_state.get_current_period()]
    return GUIDE_PERSONA.format(
        time_period=f"{current_period['name']} ({current_period['year']})"
    )

def respond(
    message,
    history: list[tuple[str, str]],
    system_message,
    max_tokens,
    temperature,
    top_p,
):
    # Check for time travel command
    if message.startswith("/travel"):
        try:
            destination = message.split()[1]
            if destination in TIME_PERIODS:
                timeline_state.visit_period(destination)
                system_message = get_system_message()
                response = f"🌟 Time jump successful! Welcome to {TIME_PERIODS[destination]['name']}. {TIME_PERIODS[destination]['description']}."
                return response
        except IndexError:
            return "Please specify a time period to travel to. Available periods: " + ", ".join(TIME_PERIODS.keys())
    
    # Normal chat response
    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

demo = gr.ChatInterface(
    respond,
    additional_inputs=[
        gr.Textbox(value=get_system_message(), label="System message"),
        gr.Slider(minimum=1, maximum=2048, value=512, step=1, label="Max new tokens"),
        gr.Slider(minimum=0.1, maximum=4.0, value=0.9, step=0.1, label="Temperature"),
        gr.Slider(
            minimum=0.1,
            maximum=1.0,
            value=0.95,
            step=0.05,
            label="Top-p (nucleus sampling)",
        ),
    ],
    title="TimeVoyager: Your Time Travel Guide",
    description="Travel through time and explore different eras! Use /travel <period> to visit different time periods. Available periods: ancient_egypt, renaissance, modern"
)

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