#!/usr/bin/env python3
"""
Tools for sending emails.
"""
import email.mime.text
import smtplib
import secrets

import config

def send_mail(to_addr, subject, body):
	"""
	Sends an email.
	"""
	msg = email.mime.text.MIMEText(body, 'plain', 'utf8')
	msg['From'] = config.email['user']
	msg['To'] = to_addr
	msg['Subject'] = subject

	with smtplib.SMTP_SSL(config.email['host'],config.email['port']) as server:
		server.login(config.email['user'], config.email['password'])
		server.send_message(msg)


async def send_invite(request, to_addr):
	"""
	Sends an invitation.
	"""
	token = secrets.token_urlsafe(32)
	async with request.app['pool'].acquire() as conn:
		await conn.execute(
			"INSERT INTO invite (email, token) "
			"VALUES ($1, $2)",
			to_addr, token)
	d = {'invite': token}
	invite_url = request.app.router['register'].url_for().with_query(d)
	invite_url = config.server_domain + config.url_prefix + invite_url
	body = "Buckle up.\n" + invite_url
	send_mail(to_addr, "Buckler Invite", body)


async def send_confirmation(request, user_id, to_addr):
	"""
	Sends an email confirmation.
	"""
	token = secrets.token_urlsafe(32)
	async with request.app['pool'].acquire() as conn:
		await conn.execute(
			"INSERT INTO email_confirmation (user_id, token) "
			"VALUES ($1, $2)",
			user_id, token)
	d = {'confirm': token}
	confirm_url = request.app.router['register'].url_for().with_query(d)
	confirm_url = config.server_domain + str(confirm_url)
	body = "Buckle up.\n" + confirm_url
	send_mail(to_addr, "Buckler Invite", body)