#!/usr/bin/env python3
# vim:ts=4:sw=4:ft=python:fileencoding=utf-8
# Copyright © 2015-2020 Carl Chenet <carl.chenet@ohmytux.com>
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>

from getpass import getpass
from os import getcwd
from mastodon import Mastodon
from mastodon.Mastodon import MastodonIllegalArgumentError
import sys

print('\nThis script generates the Mastodon application credentials for Feed2toot.\nfeed2toot_clientcred.txt and feed2toot_usercred.txt will be written\nin the current directory: {cwd}.\nA connection is initiated to create the application.\nYour password is *not* stored.\n'.format(cwd=getcwd()))

# get the instance
instance = input('Mastodon instance URL (defaults to https://mastodon.social): ')
if not instance:
    instance = 'https://mastodon.social'
elif not instance.startswith('http'):
    instance = ''.join(['https://', instance])

# get the username
userok = False
while not userok:
    user = input('Mastodon login: ')
    if not user:
        print('Your Mastodon username can not be empty.')
        userok = False
    elif '@' not in user or '.' not in user:
        print('Your Mastodon username should be an email.')
        userok = False
    else:
        userok = True

# get the password
password = getpass(prompt='Mastodon password: ')
Mastodon.create_app(
     'feed2toot',
      api_base_url=instance,
      to_file = '{cwd}/feed2toot_clientcred.txt'.format(cwd=getcwd())
)
mastodon = Mastodon(client_id = '{cwd}/feed2toot_clientcred.txt'.format(cwd=getcwd()),
                    api_base_url=instance)
try:
    mastodon.log_in(
        user,
        password,
        to_file = '{cwd}/feed2toot_usercred.txt'.format(cwd=getcwd())
    )
except MastodonIllegalArgumentError as err:
    print(err)
    sys.exit('\nI guess you entered a bad login or password.\n')
print('feed2toot was added to your preferences=>authorized apps page.')
sys.exit(0)