flask_photo_scaling_app/app/auth/email.py

#!/usr/bin/env python3

from flask import render_template, current_app
from flask_mail import Message
from .. import mail
from threading import Thread


def send_password_reset_email(contributor, external_url):
    token = contributor.get_reset_password_token()
    send_email(
        'Photo App Reset Your Password',
        sender=current_app.config['MAIL_ADMINS'][0],
        recipients=[contributor.email],
        text_body=render_template(
            'email/reset_password_email_text.txt',
            contributor=contributor,
            token=token,
            external_url=external_url,
        ),
        html_body=render_template(
            'email/reset_password_email_html.html',
            contributor=contributor,
            token=token,
            external_url=external_url,
        ),
    )


def send_async_email(app, msg):
    with app.app_context():
        mail.send(msg)


def send_email(subject, sender, recipients, text_body, html_body):
    msg = Message(subject, sender=sender, recipients=recipients)
    msg.body = text_body
    msg.html = html_body
    Thread(
        target=send_async_email,
        args=(current_app._get_current_object(), msg),
    ).start()