import traceback
from flask_mail import Message
from flask import current_app, render_template, url_for

from .token import generate_confirmation_token
from ..models.setting import Setting


def send_account_verification(user_email):
    """
    Send welcome message for the new registration
    """
    try:
        token = generate_confirmation_token(user_email)
        verification_link = url_for('index.confirm_email', token=token, _external=True)

        subject = "Welcome to {}".format(Setting().get('site_name'))
        msg = Message(subject=subject)
        msg.recipients = [user_email]
        msg.body = "Please access the following link verify your email address. {}".format(
            verification_link)
        msg.html = render_template('emails/account_verification.html',
                                verification_link=verification_link)
        current_app.mail.send(msg)
    except Exception as e:
        current_app.logger.error("Cannot send account verification email. Error: {}".format(e))
        current_app.logger.debug(traceback.format_exc())