from smolagents import CodeAgent, DuckDuckGoSearchTool, OpenAIServerModel, load_tool, tool
import datetime
import pytz
import yaml
from tools.final_answer import FinalAnswerTool
import gradio as gr

# ----- Tools -----
@tool
def my_custom_tool(arg1: str, arg2: int) -> str:
    """A tool that creates a personalized greeting repeated multiple times."""
    greeting = f"Hello, {arg1}!"
    return " ".join([greeting] * arg2)

@tool
def get_current_time_in_timezone(timezone: str) -> str:
    """Fetches the current local time in a specified timezone."""
    try:
        tz = pytz.timezone(timezone)
        local_time = datetime.datetime.now(tz).strftime("%Y-%m-%d %H:%M:%S")
        return f"The current local time in {timezone} is: {local_time}"
    except Exception as e:
        return f"Error fetching time for timezone '{timezone}': {str(e)}"

final_answer = FinalAnswerTool()

# Load prompt templates
with open("prompts.yaml", 'r') as stream:
    prompt_templates = yaml.safe_load(stream)

# Load additional tools from Hugging Face Hub
image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)

# ----- Function to initialize agent dynamically -----
def initialize_agent(api_key: str):
    model = OpenAIServerModel(
        max_tokens=2096,
        temperature=0.5,
        model_id="gpt-4o",
        custom_role_conversions=None,
        openai_api_key=api_key  # Pass the user-provided API key
    )

    agent = CodeAgent(
        model=model,
        tools=[my_custom_tool, get_current_time_in_timezone, final_answer],
        max_steps=6,
        verbosity_level=1,
        grammar=None,
        planning_interval=None,
        name=None,
        description=None,
        prompt_templates=prompt_templates
    )

    return agent

# ----- Gradio UI -----
def launch_agent(api_key: str):
    agent = initialize_agent(api_key)
    return GradioUI(agent).launch(share=True)

# Interface for the user to enter their OpenAI API key
iface = gr.Interface(
    fn=launch_agent,
    inputs=gr.Textbox(label="Enter your OpenAI API Key", type="password"),
    outputs="text",
    title="Custom SmolAgent App",
    description="Enter your OpenAI API key to use the agent."
)

iface.launch()