First_agent_template

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from smolagents import CodeAgent,DuckDuckGoSearchTool, HfApiModel,load_tool,tool
import datetime
import requests
import pytz
import yaml
from tools.final_answer import FinalAnswerTool
import smtplib
import os
import base64
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.mime.image import MIMEImage

from Gradio_UI import GradioUI


# Aux function to help tools with timezone
def _get_now_in_timezone(timezone: str) -> datetime.datetime:
    """Helper: return actual datetime in timezone."""
    tz = pytz.timezone(timezone)
    return datetime.datetime.now(tz)

# Tool 1
@tool
def get_current_time_in_timezone(timezone: str) -> str:
    """Fetches the current local time in a specified timezone.
    Args:
        timezone: A valid timezone string (e.g., 'Europe/Madrid', 'America/New_York').
    """
    try:
        now = _get_now_in_timezone(timezone)
        return f"The current local time in {timezone} is: {now.strftime('%Y-%m-%d %H:%M:%S')}"
    except Exception as e:
        return f"Error fetching time for timezone '{timezone}': {str(e)}"

# tool 2
@tool
def get_day_of_year(timezone: str) -> str:
    """Returns what day of the year it currently is in the given timezone,
    and whether it is New Year's Day (January 1st at midnight).
    Args:
        timezone: A valid timezone string (e.g., 'Europe/Madrid', 'America/New_York').
    """
    try:
        now = _get_now_in_timezone(timezone)  # 👈 reutiliza la lógica
        day_of_year = now.timetuple().tm_yday
        is_leap = now.year % 4 == 0 and (now.year % 100 != 0 or now.year % 400 == 0)
        total_days = 366 if is_leap else 365
        is_new_year_midnight = (now.month == 1 and now.day == 1 and now.hour == 0)

        return (
            f"In {timezone}: day {day_of_year} of {total_days} "
            f"({now.strftime('%B %d, %Y %H:%M:%S')}). "
            f"Is New Year midnight: {is_new_year_midnight}."
        )
    except Exception as e:
        return f"Error: {str(e)}"


# tool 3
@tool
def send_new_year_greeting(
    recipient_name: str,
    recipient_email: str,
    personalized_message: str,
    timezone: str,
    image_base64: str = "",
) -> str:
    """Sends a personalized New Year's greeting email with an optional AI-generated image.
    ONLY sends if it is currently January 1st between 00:00 and 00:59 in the given timezone.
    The agent should first use get_day_of_year to verify the date before calling this.

    Args:
        recipient_name: Full name of the recipient.
        recipient_email: Email address of the recipient.
        personalized_message: Warm, personalized message crafted by the agent for this person.
        timezone: Timezone to check for New Year's midnight (e.g., 'Europe/Madrid').
        image_base64: Optional base64-encoded image generated by image_generation_tool to attach.
    """
    try:
        # helper reused to get timezone
        now = _get_now_in_timezone(timezone) 
        is_new_year_midnight = (now.month == 1 and now.day == 1 and now.hour == 0)

        if not is_new_year_midnight:
            return (
                f"NOT sent. In {timezone} it is {now.strftime('%B %d, %Y %H:%M')} — "
                f"greetings only go out on January 1st at midnight. "
                f"Use get_day_of_year to check first!"
            )

        # email envs vars
        sender_email = os.environ.get("GREETING_SENDER_EMAIL")
        sender_password = os.environ.get("GREETING_SENDER_PASS")  

        if not sender_email or not sender_password:
            return "Missing env vars: GREETING_SENDER_EMAIL and GREETING_SENDER_PASS"

        msg = MIMEMultipart("related")
        msg["Subject"] = f"Happy New Year {now.year}, {recipient_name}!"
        msg["From"] = sender_email
        msg["To"] = recipient_email

        html_body = f"""
        <html><body style="font-family: Arial, sans-serif; max-width: 600px; margin: auto; padding: 20px;">
            <h1 style="color: #FFD700; text-align: center;">🎉 Happy New Year {now.year}!</h1>
            {"<img src='cid:new_year_image' style='width:100%; border-radius:12px; margin-bottom:20px;'/>" if image_base64 else ""}
            <p>Dear <strong>{recipient_name}</strong>,</p>
            <p style="font-size: 16px; line-height: 1.6;">{personalized_message}</p>
            <p style="color: #888; font-size: 12px; text-align:center;">
                Sent with love <3 · {timezone}
            </p>
        </body></html>
        """
        msg.attach(MIMEText(html_body, "html"))

        # image if agent generate it
        if image_base64:
            img_data = base64.b64decode(image_base64)
            img = MIMEImage(img_data)
            img.add_header("Content-ID", "<new_year_image>")
            msg.attach(img)

        with smtplib.SMTP_SSL("smtp.gmail.com", 465) as server:
            server.login(sender_email, sender_password)
            server.sendmail(sender_email, recipient_email, msg.as_string())

        return (
            f"Greeting sent to {recipient_name} ({recipient_email}) "
            f"at {now.strftime('%H:%M:%S')} in {timezone}!"
            f"{' Includes AI-generated image ' if image_base64 else ''}"
        )

    except Exception as e:
        return f"Failed: {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_day_of_year, send_new_year_greeting, image_generation_tool], ## 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()