#!/usr/bin/python3

"""
Copyright (c) 2019-2020, Ian Santopietro
All rights reserved.

This file is part of RepoLib.

RepoLib is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

RepoLib 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with RepoLib.  If not, see <https://www.gnu.org/licenses/>.
"""
#pylint: disable=invalid-name
# Pylint will complain about our module name not being snake_case, however this
# is a command rather than a python module, and thus this is correct anyway.

import argparse
import os
import subprocess

import repolib

system_codename = repolib.util.DISTRO_CODENAME

system_components = [
    'main',
    'universe',
    'multiverse',
    'restricted'
]

system_suites = [
    system_codename,
    f'{system_codename}-updates',
    f'{system_codename}-security',
    f'{system_codename}-backports',
    f'{system_codename}-proposed',
    'updates',
    'security',
    'backports',
    'proposed',
]

def get_args():
    parser = argparse.ArgumentParser(
        prog='add-apt-repository',
        description=(
            'add-apt-repository is a script for adding apt sources.list entries.'
            '\nThis command has been deprecated in favor of `apt-manage`. See '
            '`apt-manage --help` for more information.'
        )
    )

    parser.add_argument(
        'sourceline',
        metavar='<sourceline>'
    )

    group = parser.add_mutually_exclusive_group()

    group.add_argument(
        '-m',
        '--massive-debug',
        dest='debug',
        action='store_true',
        help='Print a lot of debug information to the command line'
    )

    group.add_argument(
        '-r',
        '--remove',
        action='store_true',
        help='remove repository from sources.list.d directory'
    )

    group.add_argument(
        '-s',
        '--enable-source',
        dest='source',
        action='store_true',
        help='Allow downloading of source packages from the repository'
    )

    parser.add_argument(
        '-y', 
        '--yes',
        action='store_true',
        help='Assum yes to all queries'
    )

    parser.add_argument(
        '-n',
        '--no-update',
        dest='noupdate',
        action='store_true',
        help='Do not update package cache after adding'
    )

    parser.add_argument(
        '-u',
        '--update',
        action='store_true',
        help='Update package cache after adding (legacy option)'
    )

    parser.add_argument(
        '-k',
        '--keyserver',
        metavar='KEYSERVER',
        help='Legacy option, unused.'
    )

    return parser

parser = get_args()
args = parser.parse_args()

command = ['apt-manage']

if args.debug:
    command.append('-bb')

sourceline = args.sourceline
run = True
remove = False

if sourceline in system_components:
    command.append('modify')
    command.append('system')
    if not args.remove:
        command.append('--add-component')
    else:
        command.append('--remove-component')

elif sourceline in system_suites:
    command.append('modify')
    command.append('system')
    if not args.remove:
        command.append('--add-suite')
    else:
        command.append('--remove-suite')

else:

    if args.source:
        command.append('source')

    elif args.remove:
        remove = True
        command.append('remove')

    else:
        command.append('add')
        if not args.yes:
            command.append('--expand')

if not remove:
    command.append(sourceline)
else:
    sources = repolib.get_all_sources()
    comp_source = repolib.DebLine(sourceline)
    for source in sources:
        if comp_source.uris[0] in source.uris:
            name = str(source.filename.name)
            name = name.replace(".list", "")
            name = name.replace(".sources", "")
            command.append(name)

run = True

if os.geteuid() != 0:
    print('Error: must run as root')
    run = False

if run:
    subprocess.run(command)

    if not args.noupdate:
        subprocess.run(['apt', 'update'])

print('NOTE: add-apt-repository is deprecated in Pop!_OS. Use this instead:')
print_command = command.copy()
if '--expand' in print_command:
    print_command.remove('--expand')
print(' '.join(print_command))