#
#  Copyright (C) 2019 Codethink Limited
#
#  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 cli  # pylint: disable=unused-import


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


@pytest.mark.datafiles(DATA_DIR)
def test_artifact_log(cli, datafiles):
    project = str(datafiles)

    # Get the cache key of our test element
    result = cli.run(project=project, silent=True, args=[
        '--no-colors',
        'show', '--deps', 'none', '--format', '%{full-key}',
        'target.bst'
    ])
    key = result.output.strip()

    # Ensure we have an artifact to read
    result = cli.run(project=project, args=['build', 'target.bst'])
    assert result.exit_code == 0

    # Read the log via the element name
    result = cli.run(project=project, args=['artifact', 'log', 'target.bst'])
    assert result.exit_code == 0
    log = result.output

    # Assert that there actually was a log file
    assert log != ''

    # Read the log via the key
    result = cli.run(project=project, args=['artifact', 'log', 'test/target/' + key])
    assert result.exit_code == 0
    assert log == result.output

    # Read the log via glob
    result = cli.run(project=project, args=['artifact', 'log', 'test/target/*'])
    assert result.exit_code == 0
    # The artifact is cached under both a strong key and a weak key
    assert log == result.output


@pytest.mark.datafiles(DATA_DIR)
def test_artifact_log_files(cli, datafiles):
    project = str(datafiles)

    # Ensure we have an artifact to read
    result = cli.run(project=project, args=['build', 'target.bst'])
    assert result.exit_code == 0

    logfiles = os.path.join(project, "logfiles")
    target = os.path.join(project, logfiles, "target.log")
    import_bin = os.path.join(project, logfiles, "import-bin.log")
    # Ensure the logfile doesn't exist before the command is run
    assert not os.path.exists(logfiles)
    assert not os.path.exists(target)
    assert not os.path.exists(import_bin)

    # Run the command and ensure the file now exists
    result = cli.run(project=project, args=['artifact', 'log', '--out', logfiles, 'target.bst', 'import-bin.bst'])
    assert result.exit_code == 0
    assert os.path.exists(logfiles)
    assert os.path.exists(target)
    assert os.path.exists(import_bin)

    # Ensure the file contains the logs by checking for the LOG line
    with open(target, 'r') as f:
        data = f.read()
        assert "LOG     target.bst" in data
    with open(import_bin, 'r') as f:
        data = f.read()
        assert "LOG     import-bin.bst" in data