#
#  Copyright (C) 2018 Codethink Limited
#  Copyright (C) 2019 Bloomberg Finance LP
#
#  This program 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 2 of the License, or (at your option) any later version.
#
#  This library 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 library. If not, see <http://www.gnu.org/licenses/>.
#

# Pylint doesn't play well with fixtures and dependency injection from pytest
# pylint: disable=redefined-outer-name

import os
import pytest

from buildstream.testing import create_repo, ALL_REPO_KINDS
from buildstream.testing import cli  # pylint: disable=unused-import
from buildstream import _yaml

# Project directory
TOP_DIR = os.path.dirname(os.path.realpath(__file__))
DATA_DIR = os.path.join(TOP_DIR, 'project')

fetch_build_checkout_combos = \
    [("strict", kind) for kind in ALL_REPO_KINDS] + \
    [("non-strict", kind) for kind in ALL_REPO_KINDS]


def strict_args(args, strict):
    if strict != "strict":
        return ['--no-strict', *args]
    return args


@pytest.mark.datafiles(DATA_DIR)
@pytest.mark.parametrize("strict,kind", fetch_build_checkout_combos)
def test_fetch_build_checkout(cli, tmpdir, datafiles, strict, kind):
    checkout = os.path.join(cli.directory, 'checkout')
    project = str(datafiles)
    dev_files_path = os.path.join(project, 'files', 'dev-files')
    element_path = os.path.join(project, 'elements')
    element_name = 'build-test-{}.bst'.format(kind)

    # Create our repo object of the given source type with
    # the dev files, and then collect the initial ref.
    #
    repo = create_repo(kind, str(tmpdir))
    ref = repo.create(dev_files_path)

    # Write out our test target
    element = {
        'kind': 'import',
        'sources': [
            repo.source_config(ref=ref)
        ]
    }
    _yaml.dump(element,
               os.path.join(element_path,
                            element_name))

    assert cli.get_element_state(project, element_name) == 'fetch needed'
    result = cli.run(project=project, args=strict_args(['build', element_name], strict))
    result.assert_success()
    assert cli.get_element_state(project, element_name) == 'cached'

    # Now check it out
    result = cli.run(project=project, args=strict_args([
        'artifact', 'checkout', element_name, '--directory', checkout
    ], strict))
    result.assert_success()

    # Check that the pony.h include from files/dev-files exists
    filename = os.path.join(checkout, 'usr', 'include', 'pony.h')
    assert os.path.exists(filename)