from django.core import mail
from django.core.mail import EmailMessage
from django.conf import settings
from django.core.mail.backends.smtp import EmailBackend


NOT_SENT, SENT, PARTLY_SENT = 0, 1, 2


def send_from_arbeitsministerium(subject, content, recipients, reply_to=None):
    return send(subject, content, settings.EMAIL_ARBEITSMINISTERIUM, recipients,
                reply_to=reply_to,
                auth_user=settings.EMAIL_ARBEITSMINISTERIUM_USER,
                auth_password=settings.EMAIL_ARBEITSMINISTERIUM_PASSWORD)


def send(subject, content, sender, recipients, reply_to=None,
         auth_user=None, auth_password=None):
    failed, succeeded = False, False
    if type(recipients) != list:
        recipients = [recipients]
    for recipient in set(recipients):
        try:
            mail.send_mail(subject, content, sender, recipients,
                           auth_user=auth_user,
                           auth_password=auth_password)
        except Exception as e:
            print("Error when sending mail:", e)
            failed = True
        else:
            succeeded = True
    return NOT_SENT if failed and not succeeded else SENT if not failed\
        and succeeded else PARTLY_SENT