#!/usr/bin/env python

# Copyright (C) 2017 g10 Code GmbH
#
# This file is part of GPGME.
#
# GPGME 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 2 of the License, or
# (at your option) any later version.
#
# GPGME 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 this program; if not, see <http://www.gnu.org/licenses/>.

from __future__ import absolute_import, print_function, unicode_literals
del absolute_import, print_function, unicode_literals

import gpg
import itertools
import os
import shutil
import time

import support

alpha = "Alpha <alpha@invalid.example.net>"
bravo = "Bravo <bravo@invalid.example.net>"

def copy_configuration(destination):
    home = os.environ['GNUPGHOME']
    shutil.copy(os.path.join(home, "gpg.conf"), destination)
    shutil.copy(os.path.join(home, "gpg-agent.conf"), destination)

with support.TemporaryDirectory() as tmp:
    copy_configuration(tmp)
    with gpg.Context(home_dir=tmp) as ctx:
        res = ctx.create_key(alpha, certify=True)
        key = ctx.get_key(res.fpr)
        assert len(key.subkeys) == 1, "Expected one primary key and no subkeys"
        assert len(key.uids) == 1, "Expected exactly one UID"

        def get_uid(uid):
            key = ctx.get_key(res.fpr)
            for u in key.uids:
                if u.uid == uid:
                    return u
            return None

        # sanity check
        uid = get_uid(alpha)
        assert uid, "UID alpha not found"
        assert uid.revoked == 0

        # add bravo
        ctx.key_add_uid(key, bravo)
        uid = get_uid(bravo)
        assert uid, "UID bravo not found"
        assert uid.revoked == 0

        # revoke alpha
        ctx.key_revoke_uid(key, alpha)
        uid = get_uid(alpha)
        assert uid, "UID alpha not found"
        assert uid.revoked == 1
        uid = get_uid(bravo)
        assert uid, "UID bravo not found"
        assert uid.revoked == 0

        # try to revoke the last UID
        try:
            ctx.key_revoke_uid(key, alpha)
            # IMHO this should fail.  issue2961.
            # assert False, "Expected an error but got none"
        except gpg.errors.GpgError:
            pass

        # Everything should be the same
        uid = get_uid(alpha)
        assert uid, "UID alpha not found"
        assert uid.revoked == 1
        uid = get_uid(bravo)
        assert uid, "UID bravo not found"
        assert uid.revoked == 0

        # try to revoke a non-existent UID
        try:
            ctx.key_revoke_uid(key, "i dont exist")
            # IMHO this should fail.  issue2963.
            # assert False, "Expected an error but got none"
        except gpg.errors.GpgError:
            pass

        # try to add an pre-existent UID
        try:
            ctx.key_add_uid(key, bravo)
            assert False, "Expected an error but got none"
        except gpg.errors.GpgError:
            pass