"""Send email."""

import smtplib
from email.mime.text import MIMEText
from email.utils import formatdate, make_msgid

from flask import current_app


def send_mail(subject: str, body: str) -> None:
    """Send email to site admin."""
    app = current_app
    mail_to = app.config["ADMIN_EMAIL"]
    mail_from = app.config["MAIL_FROM"]
    msg = MIMEText(body, "plain", "UTF-8")

    msg["Subject"] = subject
    msg["To"] = mail_to
    msg["From"] = mail_from
    msg["Date"] = formatdate()
    msg["Message-ID"] = make_msgid()

    s = smtplib.SMTP(app.config["SMTP_HOST"])
    s.sendmail(mail_from, [mail_to], msg.as_string())
    s.quit()