import logging
from email.message import EmailMessage

import aiosmtplib

from utils.config import loader_email as setting

cfg = setting.Config()
logger = logging.getLogger(__name__)


async def send_error_email(unit_name: str, tool_name: str, matlab_cmd: str, matlab_error: str, errors: list, warnings: list) -> None:
    """
    Sends an error email containing details about a MATLAB processing failure.

    The email includes information about the unit, tool, MATLAB command, error message,
    and lists of specific errors and warnings encountered.

    Args:
        unit_name (str): The name of the unit involved in the processing.
        tool_name (str): The name of the tool involved in the processing.
        matlab_cmd (str): The MATLAB command that was executed.
        matlab_error (str): The main MATLAB error message.
        errors (list): A list of detailed error messages from MATLAB.
        warnings (list): A list of detailed warning messages from MATLAB.
    """

    # Creazione dell'oggetto messaggio
    msg = EmailMessage()
    msg["Subject"] = cfg.subject
    msg["From"] = cfg.from_addr
    msg["To"] = cfg.to_addr
    msg["Cc"] = cfg.cc_addr
    msg["Bcc"] = cfg.bcc_addr

    MatlabErrors = "<br/>".join(errors)
    MatlabWarnings = "<br/>".join(dict.fromkeys(warnings))

    # Imposta il contenuto del messaggio come HTML
    msg.add_alternative(
        cfg.body.format(
            unit=unit_name,
            tool=tool_name,
            matlab_cmd=matlab_cmd,
            matlab_error=matlab_error,
            MatlabErrors=MatlabErrors,
            MatlabWarnings=MatlabWarnings,
        ),
        subtype="html",
    )
    try:
        # Use async SMTP to prevent blocking the event loop
        await aiosmtplib.send(
            msg,
            hostname=cfg.smtp_addr,
            port=cfg.smtp_port,
            username=cfg.smtp_user,
            password=cfg.smtp_passwd,
            start_tls=True,
        )
        logger.info("Email inviata con successo!")
    except Exception as e:
        logger.error(f"Errore durante l'invio dell'email: {e}")