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

from Gradio_UI import GradioUI

def get_iana_zone_from_etc():
    """
    Attempt to read /etc/localtime as a symlink and extract the IANA timezone key.
    This works on many Unix-like systems where /etc/localtime is a symlink to a file
    inside a directory like /usr/share/zoneinfo/.
    """
    etc_localtime = "/etc/localtime"
    if os.path.exists(etc_localtime) and os.path.islink(etc_localtime):
        try:
            link = os.readlink(etc_localtime)
            # If the link contains 'zoneinfo', we assume the part after it is the zone name.
            if "zoneinfo" in link:
                # Normalize path separators
                parts = link.split(os.sep)
                if "zoneinfo" in parts:
                    idx = parts.index("zoneinfo")
                    return os.sep.join(parts[idx+1:])
        except OSError:
            pass
    return None

def get_local_timezone_name():
    """
    Attempt to obtain a human-readable IANA timezone name.
    First, check if the tzinfo object from datetime.now().astimezone() has a 'key' or 'zone' attribute.
    If not, try to extract it from /etc/localtime (Unix only) or from the TZ environment variable.
    """
    local_dt = datetime.datetime.now().astimezone()
    tz = local_dt.tzinfo
    # Try to get the IANA name from the tzinfo object
    tz_name = getattr(tz, 'key', None) or getattr(tz, 'zone', None)
    # If the name is an offset (e.g. "+01"), we want to try a fallback.
    if tz_name is None or tz_name.startswith(('+', '-')):
        # First try reading /etc/localtime (works on many Unix systems)
        zone_from_etc = get_iana_zone_from_etc()
        if zone_from_etc:
            return zone_from_etc
        # Next, check if TZ environment variable is set to an IANA name.
        tz_env = os.environ.get("TZ")
        if tz_env:
            return tz_env
        # Otherwise, fallback to the string representation of tzinfo
        return str(tz)
    return tz_name


# Below is an example of a tool that does nothing. Amaze us with your creativity !
@tool
def get_current_local_time_and_timezone()-> str:
    """A tool that gets the time and the timezone of the user
    Args:
    """
    local_dt = datetime.datetime.now().astimezone()
    current_time = local_dt.strftime('%Y-%m-%d %H:%M:%S')
    timezone_name = get_local_timezone_name()
    return f"The current local time in {timezone_name} is: {current_time}"

@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
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=[final_answer, get_current_time_in_timezone, get_current_local_time_and_timezone], ## 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()