import logging as loggers
from threading import Thread
from django.conf import settings
from django.core.mail import EmailMessage
from django.template.loader import get_template


loggers.basicConfig(
    level=loggers.DEBUG,
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
)

logger = loggers.getLogger(__name__)


class EmailThread(Thread):
    """
    This class is used to send emails asynchronously.

    Attributes:
        subject (str): The subject of the email.
        html_content (str): The content of the email.
        recipient_list (list): The list of recipients.

    """

    def __init__(self, subject, html_content, recipient_list, key, files=None):
        self.subject = subject
        self.key = key
        self.recipient_list = recipient_list
        self.html_content = html_content
        self.files = files
        Thread.__init__(self)

    def run(self):
        """ This Function used for run the thread """
        try:

            message = get_template(self.html_content).render(self.key)
            msg = EmailMessage(self.subject, message,
                               settings.COMPANY_NAME+"<" + settings.FROM_EMAIL + ">", self.recipient_list)
            msg.content_subtype = "html"

            msg.send()
        except Exception as exception:
            logger.error("%s", exception)


def send_mail(subject, html_content, recipient_list, key=None, files=None):
    """ This module is used for send email in the whole system.
        This function run asynchronously.
        Args:
            subject (str): The subject of the email.
            html_content (str): The content of the email.
            recipient_list (list): The list of recipients.
            key (dict): The dictionary of key value pairs.
            files (list): The list of files.
       """

    company_information = {
        "company_name": settings.COMPANY_NAME,
        'company_address': settings.COMPANY_ADDRESS,
        'company_email': settings.COMPANY_EMAIL,
        'company_phone': settings.COMPANY_PHONE,
        'company_website': settings.COMPANY_WEBSITE,
        'company_logo': settings.COMPANY_LOGO,
        'text_color': settings.TEXT_COLOR,
        'primary_color': settings.PRIMARY_COLOR,
        'secondary_color': settings.SECONDARY_COLOR,
        'copyright': settings.COMPANY_COPYRIGHT,
        'button_color': settings.BUTTON_COLOR,
        'starting_year': settings.STARTING_YEAR,

    }
    key.update(company_information)
    try:
        EmailThread(subject, html_content, recipient_list, key, files).start()

        logger.info(("Email sent to:%s", recipient_list))
    except Exception as exception:
        logger.error(exception)