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

def send_email(to, subject, template, **kwargs):
    app = current_app._get_current_object()
    msg = Message(app.config['MAIL_SUBJECT_PREFIX']+subject, sender=app.config['MAIL_SENDER'], recipients=[to])
    msg.body = render_template(template+'.txt', **kwargs)
    msg.html = render_template(template+'.html', **kwargs)
    thr = Thread(target=send_async_email,args=[app,msg])
    thr.start()
    return thr

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