# Copyright (C) 2013, 2016 Canonical Ltd
#
# 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 2 of the License, or
# (at your option) 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

"""Black-box tests for brz verify-signatures."""

from breezy import gpg, tests


class TestVerifySignatures(tests.TestCaseWithTransport):
    def monkey_patch_gpg(self):
        """Monkey patch the gpg signing strategy to be a loopback.

        This also registers the cleanup, so that we will revert to
        the original gpg strategy when done.
        """
        # monkey patch gpg signing mechanism
        self.overrideAttr(gpg, "GPGStrategy", gpg.LoopbackGPGStrategy)

    def setup_tree(self, location="."):
        wt = self.make_branch_and_tree(location)
        wt.commit("base A", allow_pointless=True, rev_id=b"A")
        wt.commit("base B", allow_pointless=True, rev_id=b"B")
        wt.commit("base C", allow_pointless=True, rev_id=b"C")
        wt.commit(
            "base D",
            allow_pointless=True,
            rev_id=b"D",
            committer="Alternate <alt@foo.com>",
        )
        wt.add_parent_tree_id(b"aghost")
        wt.commit("base E", allow_pointless=True, rev_id=b"E")
        return wt

    def test_verify_signatures(self):
        self.setup_tree()
        self.monkey_patch_gpg()
        self.run_bzr("sign-my-commits")
        out = self.run_bzr("verify-signatures", retcode=1)
        self.assertEqual(
            (
                "4 commits with valid signatures\n"
                "0 commits with key now expired\n"
                "0 commits with unknown keys\n"
                "0 commits not valid\n"
                "1 commit not signed\n",
                "",
            ),
            out,
        )

    def test_verify_signatures_acceptable_key(self):
        self.setup_tree()
        self.monkey_patch_gpg()
        self.run_bzr("sign-my-commits")
        out = self.run_bzr(
            ["verify-signatures", "--acceptable-keys=foo,bar"], retcode=1
        )
        self.assertEqual(
            (
                "4 commits with valid signatures\n"
                "0 commits with key now expired\n"
                "0 commits with unknown keys\n"
                "0 commits not valid\n"
                "1 commit not signed\n",
                "",
            ),
            out,
        )

    def test_verify_signatures_verbose(self):
        self.setup_tree()
        self.monkey_patch_gpg()
        self.run_bzr("sign-my-commits")
        out = self.run_bzr("verify-signatures --verbose", retcode=1)
        self.assertEqual(
            (
                "4 commits with valid signatures\n"
                "  None signed 4 commits\n"
                "0 commits with key now expired\n"
                "0 commits with unknown keys\n"
                "0 commits not valid\n"
                "1 commit not signed\n"
                "  1 commit by author Alternate <alt@foo.com>\n",
                "",
            ),
            out,
        )

    def test_verify_signatures_verbose_all_valid(self):
        self.setup_tree()
        self.monkey_patch_gpg()
        self.run_bzr("sign-my-commits")
        self.run_bzr(["sign-my-commits", ".", "Alternate <alt@foo.com>"])
        out = self.run_bzr("verify-signatures --verbose")
        self.assertEqual(
            (
                "All commits signed with verifiable keys\n  None signed 5 commits\n",
                "",
            ),
            out,
        )
