# Copyright (C) 2005, 2006, 2008-2011 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

"""Test for setup.py build process."""

import os
import subprocess
import sys

from packaging.version import Version

import breezy

from .. import tests

# TODO: Run bzr from the installed copy to see if it works.  Really we need to
# run something that exercises every module, just starting it may not detect
# some missing modules.
#
# TODO: Check that the version numbers are in sync.  (Or avoid this...)


class TestSetup(tests.TestCaseInTempDir):
    def test_build_and_install(self):
        """Test cmd `python setup.py build`.

        This tests that the build process and man generator run correctly.
        It also can catch new subdirectories that weren't added to setup.py.
        """
        # setup.py must be run from the root source directory, but the tests
        # are not necessarily invoked from there
        self.source_dir = os.path.dirname(os.path.dirname(breezy.__file__))
        if not os.path.isfile(os.path.join(self.source_dir, "setup.py")):
            self.skipTest("There is no setup.py file adjacent to the breezy directory")
        if os.environ.get("GITHUB_ACTIONS") == "true":
            # On GitHub CI, for some reason rustc can't be found.
            # Marking as known failing for now.
            self.knownFailure(
                "rustc can not be found in the GitHub actions environment"
            )
        try:
            import distutils.sysconfig

            makefile_path = distutils.sysconfig.get_makefile_filename()
            if not os.path.exists(makefile_path):
                self.skipTest(
                    "You must have the python Makefile installed to run this"
                    " test. Usually this can be found by installing"
                    ' "python-dev"'
                )
        except ImportError:
            self.skipTest(
                "You must have distutils installed to run this test."
                ' Usually this can be found by installing "python-dev"'
            )
        self.log("test_build running from {}".format(self.source_dir))
        build_dir = os.path.join(self.test_dir, "build")
        install_dir = os.path.join(self.test_dir, "install")
        self.run_setup(["build", "-b", build_dir, "install", "--root", install_dir])
        # Install layout is platform dependant
        self.assertPathExists(install_dir)
        self.run_setup(["clean", "-b", build_dir])

    def run_setup(self, args):
        args = [
            sys.executable,
            "./setup.py",
        ] + args
        self.log("source base directory: %s", self.source_dir)
        self.log("args: %r", args)
        env = dict(os.environ)
        env["PYTHONPATH"] = ":".join(sys.path)
        p = subprocess.Popen(
            args,
            cwd=self.source_dir,
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
            env=env,
        )
        stdout, stderr = p.communicate()
        self.log("stdout: %r", stdout)
        self.log("stderr: %r", stderr)
        self.assertEqual(0, p.returncode, "invocation of {!r} failed".format(args))


class TestDistutilsVersion(tests.TestCase):
    def test_version_with_string(self):
        # We really care about two pyrex specific versions and our ability to
        # detect them
        lv = Version
        self.assertTrue(lv("0.9.4.1") < lv("0.17.beta1"))
        self.assertTrue(lv("0.9.6.3") < lv("0.10"))
