#!/usr/bin/env python

from __future__ import print_function, absolute_import

import os

import argparse

from datetime import datetime, timedelta

from sqlalchemy.exc import SQLAlchemyError

import pagure.config

import pagure.lib.model as model

import pagure.lib.model_base

import pagure.lib.notify

import pagure.lib.query

if 'PAGURE_CONFIG' not in os.environ \

        and os.path.exists('/etc/pagure/pagure.cfg'):

    print('Using configuration file `/etc/pagure/pagure.cfg`')

    os.environ['PAGURE_CONFIG'] = '/etc/pagure/pagure.cfg'

_config = pagure.config.reload_config()

def main(check=False, debug=False):

    ''' The function that actually sends the email

    in case the expiration date is near'''

    current_time = datetime.utcnow()

    day_diff_for_mail = [10, 5, 1]

    email_dates = [

        email_day.date()

        for email_day in [

            current_time + timedelta(days=i)

                   for i in day_diff_for_mail

        ]

    ]

    session = pagure.lib.model_base.create_session(_config['DB_URL'])

    tokens = session.query(model.Token).all()

    for token in tokens:

        if debug:

            print(token.id, token.expiration.date())

        if token.expiration.date() in email_dates:

            user = token.user

            username = user.fullname or user.username

            user_email = user.default_email

            days_left = (token.expiration - datetime.utcnow()).days

            subject = 'Pagure API key expiration date is near!'

            if token.project:

                text = '''Hi %s,

Your Pagure API key %s linked to the project %s

will expire in %s day(s).

Please get a new key for non-interrupted service.

Thanks,

Your Pagure Admin. ''' % (

                    username,

                    token.description,

                    token.project.fullname,

                    days_left

                )

            else:

                text = '''Hi %s,

Your Pagure API key %s will expire in %s day(s).

Please get a new key for non-interrupted service.

Thanks,

Your Pagure Admin. ''' % (

                    username,

                    token.description,

                    days_left)

            if not check:

                msg = pagure.lib.notify.send_email(text, subject, user_email)

            else:

                print('Sending email to %s (%s) about key: %s' % (

                    username, user_email, token.id))

            if debug:

                print('Sent mail to %s' % username)

    session.remove()

    if debug:

        print('Done')

if __name__ == '__main__':

    parser = argparse.ArgumentParser(

            description='Script to send email before the api token expires')

    parser.add_argument(

        '--check', dest='check', action='store_true', default=False,

        help='Print the some output but does not send any email')

    parser.add_argument(

        '--debug', dest='debug', action='store_true', default=False,

        help='Print the debugging output')

    args = parser.parse_args()

    main(debug=args.debug)