import os
from huggingface_hub import login
import datetime
import pytz

from smolagents import (
    CodeAgent,
    DuckDuckGoSearchTool,
    InferenceClientModel,
    load_tool,
    tool
)
from tools.final_answer import FinalAnswerTool
from Gradio_UI import GradioUI

# 1) Authenticate with your HF token
hf_token = os.getenv("HF_HUB_TOKEN")
if not hf_token:
    raise RuntimeError("HF_HUB_TOKEN env var not set")
login(hf_token)

# 2) Define tools with compliant docstrings
@tool
def my_custom_tool(arg1: str, arg2: int) -> str:
    """
    Placeholder tool.

    Args:
        arg1: A sample string.
        arg2: A sample integer.

    Returns:
        A placeholder response.
    """
    return "What magic will you build?"

@tool
def get_current_time_in_timezone(timezone: str) -> str:
    """
    Fetch the current time in a specified timezone.

    Args:
        timezone: A tz database name (e.g., 'Europe/Paris').

    Returns:
        Local time as 'YYYY-MM-DD HH:MM:SS', or an error message.
    """
    try:
        tz = pytz.timezone(timezone)
        now = datetime.datetime.now(tz)
        return now.strftime("The current local time in %Z (%z) is %Y-%m-%d %H:%M:%S")
    except Exception as e:
        return f"Error fetching time: {e}"

final_answer = FinalAnswerTool()

# 3) Load the model WITHOUT an unsupported provider override
model = InferenceClientModel(
    model_id="Qwen/Qwen2.5-Coder-32B-Instruct",
    max_tokens=2096,
    temperature=0.5,
    api_key=hf_token             # ensure your token is passed here
    # provider omitted to use default "auto"
)

# 4) Load built-in tools
image_gen = load_tool("agents-course/text-to-image", trust_remote_code=True)
web_search = DuckDuckGoSearchTool()

# 5) Instantiate CodeAgent using default prompt templates
agent = CodeAgent(
    model=model,
    tools=[
        final_answer,
        my_custom_tool,
        get_current_time_in_timezone,
        image_gen,
        web_search,
    ],
    max_steps=6,
    verbosity_level=1,
    add_base_tools=False
)

# 6) Launch Gradio UI
GradioUI(agent).launch()