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


@tool
def calculate_time_lag(timezone1:str, timezone2:int)-> str: #it's import to specify the return type
    """
    A tool that calculates the time lag between two timezones based on their current local times.
   Args:
        timezone1: A string representing the first timezone (e.g., 'Asia/Seoul').
        timezone2: A string representing the second timezone (e.g., 'America/New_York').
    Returns:
        A string describing the time difference in hours and minutes.
    """
    try:
        now_utc = datetime.datetime.now(datetime.timezone.utc)

        tz1 = pytz.timezone(timezone1)
        tz1_local = now_utc.astimezone(tz1)

        tz2 = pytz.timezone(timezone2)
        tz2_local = now_utc.astimezone(tz2)

        # 시간 차이 (timezone1 기준에서 얼마나 차이 나는지)
        time_diff = tz1_local - tz2_local

        # 시, 분 단위로 변환
        diff_hours = time_diff.total_seconds() // 3600
        diff_minutes = (time_diff.total_seconds() % 3600) // 60

        # 절대값을 사용해 양수로 변환, 나중에 양/음 부호를 붙이는 방식
        abs_hours = abs(diff_hours)
        abs_minutes = abs(diff_minutes)

        # 앞선 타임존(+)인지 뒤선 타임존(-)인지 결정
        if time_diff.total_seconds() == 0:
            return f"Time difference between {timezone1} and {timezone2} is 0 hours; they have the same current local time!"
        elif time_diff.total_seconds() > 0:
            sign = "+"
        else:
            sign = "-"

        return (f"Current time in {timezone1} is {tz1_local.strftime('%Y-%m-%d %H:%M:%S')}, "
                f"and in {timezone2} is {tz2_local.strftime('%Y-%m-%d %H:%M:%S')}. "
                f"\nTime difference (timezone1 - timezone2) = {sign}{int(abs_hours)} hours {int(abs_minutes)} minutes.")
    except Exception as e:
        return f"Error calculating time difference: {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 = FinalAnswerTool()

# If the agent does not answer, the model is overloaded, please use another model or the following Hugging Face Endpoint that also contains qwen2.5 coder:
# model_id='https://pflgm2locj2t89co.us-east-1.aws.endpoints.huggingface.cloud' 

model = HfApiModel(
max_tokens=2096,
temperature=0.5,
# model_id='Qwen/Qwen2.5-Coder-32B-Instruct',# it is possible that this model may be overloaded
model_id='https://pflgm2locj2t89co.us-east-1.aws.endpoints.huggingface.cloud' ,
custom_role_conversions=None,
)


# Import tool from Hub
image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)

with open("prompts.yaml", 'r') as stream:
    prompt_templates = yaml.safe_load(stream)
    
agent = CodeAgent(
    model=model,
    tools=[calculate_time_lag, final_answer], ## add your tools here (don't remove final answer)
    max_steps=6,
    verbosity_level=1,
    grammar=None,
    planning_interval=None,
    name=None,
    description=None,
    prompt_templates=prompt_templates
)


GradioUI(agent).launch()