#!/usr/bin/env python

# Copyright (C) 2016 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 support

c = gpg.Context()

c.set_armor(True)

source = gpg.Data("Hallo Leute\n")

sink = gpg.Data()

keys = []

keys.append(c.get_key("A0FF4590BB6122EDEF6E3C542D727CC768697734", False))

keys.append(c.get_key("D695676BDCEDCC2CDD6152BCFE180B1DA9E3B0B2", False))

c.op_encrypt(keys, gpg.constants.ENCRYPT_ALWAYS_TRUST, source, sink)

result = c.op_encrypt_result()

assert not result.invalid_recipients, \

  "Invalid recipients: {}".format(", ".join(r.fpr for r in result.recipients))

support.print_data(sink)

# Idiomatic interface.

with gpg.Context(armor=True) as c:

    ciphertext, _, _ = c.encrypt("Hallo Leute\n".encode(),

                                 recipients=keys,

                                 sign=False,

                                 always_trust=True)

    assert len(ciphertext) > 0

    assert ciphertext.find(b'BEGIN PGP MESSAGE') > 0, 'Marker not found'

    c.encrypt("Hallo Leute\n".encode(),

              recipients=[c.get_key(support.encrypt_only, False)],

              sign=False, always_trust=True)

    try:

        c.encrypt("Hallo Leute\n".encode(),

                  recipients=[c.get_key(support.sign_only, False)],

                  sign=False, always_trust=True)

    except gpg.errors.InvalidRecipients as e:

        assert len(e.recipients) == 1

        assert support.sign_only.endswith(e.recipients[0].fpr)

    else:

        assert False, "Expected an InvalidRecipients error, got none"

    try:

        # People might be tempted to provide strings.

        # We should raise something useful.

        ciphertext, _, _ = c.encrypt("Hallo Leute\n",

                                     recipients=keys,

                                     sign=False,

                                     always_trust=True)

    except TypeError as e:

        # This test is a bit fragile, because the message

        # may very well change. So if the behaviour will change

        # this test can easily be deleted.

        assert "encode" in str(e)