from smolagents import CodeAgent, DuckDuckGoSearchTool, HfApiModel, load_tool, tool
import datetime
import requests
import pytz
import yaml
from tools.final_answer import FinalAnswerTool
from Gradio_UI import GradioUI

verbose = True
if verbose: print("Running app.py")
    

# Below is an example of a tool that does nothing. Amaze us with your creativity !
@tool
def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return type
    #Keep this format for the description / args / args description but feel free to modify the tool
    """A tool that does nothing yet 
    Args:
        arg1: the first argument
        arg2: the second argument
    """
    return "What magic will you build ?"


# Custom Tools

@tool
def get_joke() -> str:
    """Fetches a random joke from an alternative API (icanhazdadjoke)."""
    try:
        headers = {"Accept": "application/json"}
        response = requests.get("https://icanhazdadjoke.com/", headers=headers).json()
        return response["joke"]
    except Exception as e:
        return f"Error fetching joke: {str(e)}"


@tool
def get_current_time_in_timezone(timezone: str) -> str:
    """A tool that fetches the current local time in a specified timezone.
    Args:
        timezone: A string representing a valid timezone (e.g., 'America/New_York').
    """
    try:
        # Create timezone object
        tz = pytz.timezone(timezone)
        # Get current time in that 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 Tool (Required)
final_answer = FinalAnswerTool()

MODEL_IDS = [
    'Qwen/Qwen2.5-Coder-32B-Instruct',
    'Qwen/Qwen2.5-Coder-14B-Instruct',
    'Qwen/Qwen2.5-Coder-7B-Instruct',
    'Qwen/Qwen2.5-Coder-3B-Instruct',
    'Qwen/Qwen2.5-Coder-1.5B-Instruct'
    # Add here wherever model is working for you
]

def is_model_overloaded(model_url):
    """Verify if the model is overloaded doing a test call."""
    try:
        response = requests.post(model_url, json={"inputs": "Test"})
        if verbose: 
            print(response.status_code)
        if response.status_code == 503:  # 503 Service Unavailable = Overloaded
            return True
        if response.status_code == 404:  # 404 Client Error: Not Found 
            return True
        if response.status_code == 424:  # 424 Client Error: Failed Dependency for url:
            return True
        return False
    except requests.RequestException:
        return True  # if there are an error is overloaded

def get_available_model():
    """Select the first model available from the list."""
    for model_url in MODEL_IDS:
        print("trying",model_url)
        if not is_model_overloaded(model_url):
            return model_url
    return MODEL_IDS[0]  # if all are failing, use the first model by dfault

if verbose: print("Checking available models.")

selected_model_id = get_available_model()

model = HfApiModel(
    max_tokens=1048,
    temperature=0.5,
    #model_id='Qwen/Qwen2.5-Coder-32B-Instruct',   
    model_id = selected_model_id, # model available selected from the list automatically
    custom_role_conversions=None,
)

# Import external tools
image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)
search_tool = DuckDuckGoSearchTool()

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

# Initialize agent with necessary tools
agent = CodeAgent(
    model=model,
    tools=[final_answer, get_joke, get_current_time_in_timezone, image_generation_tool, search_tool],
    max_steps=6,
    verbosity_level=1,
    grammar=None,
    planning_interval=None,
    name=None,
    description=None,
    prompt_templates=prompt_templates
)

# Launch UI
GradioUI(agent).launch()