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# OpenLP - Open Source Lyrics Projection                                      #
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"""
Package to test the openlp.core.version package.
"""
import sys
from datetime import date
from unittest.mock import MagicMock, patch

from requests.exceptions import ConnectionError

from openlp.core.version import VersionWorker, check_for_update, get_version, update_check_date


def test_worker_init():
    """Test the VersionWorker constructor"""
    # GIVEN: A last check date and a current version
    last_check_date = '1970-01-01'
    current_version = '2.0'

    # WHEN: A worker is created
    worker = VersionWorker(last_check_date, current_version)

    # THEN: The correct attributes should have been set
    assert worker.last_check_date == last_check_date
    assert worker.current_version == current_version


@patch('openlp.core.version.platform')
@patch('openlp.core.version.requests')
def test_worker_start(mock_requests, mock_platform):
    """Test the VersionWorkder.start() method"""
    # GIVEN: A last check date, current version, and an instance of worker
    last_check_date = '1970-01-01'
    current_version = {'full': '2.0', 'version': '2.0', 'build': None}
    mock_platform.system.return_value = 'Linux'
    mock_platform.release.return_value = '4.12.0-1-amd64'
    mock_requests.get.return_value = MagicMock(text='2.4.6', status_code=200)
    worker = VersionWorker(last_check_date, current_version)

    # WHEN: The worker is run
    with patch.object(worker, 'new_version') as mock_new_version, \
            patch.object(worker, 'quit') as mock_quit:
        worker.start()

    # THEN: The check completes and the signal is emitted
    expected_download_url = 'https://www.openlp.org/files/version.txt'
    expected_headers = {'User-Agent': 'OpenLP/2.0 Linux/4.12.0-1-amd64; '}
    mock_requests.get.assert_called_once_with(expected_download_url, headers=expected_headers)
    mock_new_version.emit.assert_called_once_with('2.4.6')
    mock_quit.emit.assert_called_once_with()


@patch('openlp.core.version.platform')
@patch('openlp.core.version.requests')
def test_worker_start_dev_version(mock_requests, mock_platform):
    """Test the VersionWorkder.start() method for dev versions"""
    # GIVEN: A last check date, current version, and an instance of worker
    last_check_date = '1970-01-01'
    current_version = {'full': '2.1.3', 'version': '2.1.3', 'build': None}
    mock_platform.system.return_value = 'Linux'
    mock_platform.release.return_value = '4.12.0-1-amd64'
    mock_requests.get.return_value = MagicMock(text='2.4.6', status_code=200)
    worker = VersionWorker(last_check_date, current_version)

    # WHEN: The worker is run
    with patch.object(worker, 'new_version') as mock_new_version, \
            patch.object(worker, 'quit') as mock_quit:
        worker.start()

    # THEN: The check completes and the signal is emitted
    expected_download_url = 'https://www.openlp.org/files/dev_version.txt'
    expected_headers = {'User-Agent': 'OpenLP/2.1.3 Linux/4.12.0-1-amd64; '}
    mock_requests.get.assert_called_once_with(expected_download_url, headers=expected_headers)
    mock_new_version.emit.assert_called_once_with('2.4.6')
    mock_quit.emit.assert_called_once_with()


@patch('openlp.core.version.platform')
@patch('openlp.core.version.requests')
def test_worker_start_nightly_version(mock_requests, mock_platform):
    """Test the VersionWorkder.start() method for nightlies"""
    # GIVEN: A last check date, current version, and an instance of worker
    last_check_date = '1970-01-01'
    current_version = {'full': '2.1-bzr2345', 'version': '2.1', 'build': '2345'}
    mock_platform.system.return_value = 'Linux'
    mock_platform.release.return_value = '4.12.0-1-amd64'
    mock_requests.get.return_value = MagicMock(text='2.4.6', status_code=200)
    worker = VersionWorker(last_check_date, current_version)

    # WHEN: The worker is run
    with patch.object(worker, 'new_version') as mock_new_version, \
            patch.object(worker, 'quit') as mock_quit:
        worker.start()

    # THEN: The check completes and the signal is emitted
    expected_download_url = 'https://www.openlp.org/files/nightly_version.txt'
    expected_headers = {'User-Agent': 'OpenLP/2.1-bzr2345 Linux/4.12.0-1-amd64; '}
    mock_requests.get.assert_called_once_with(expected_download_url, headers=expected_headers)
    mock_new_version.emit.assert_called_once_with('2.4.6')
    mock_quit.emit.assert_called_once_with()


@patch('openlp.core.version.platform')
@patch('openlp.core.version.requests')
def test_worker_empty_response(mock_requests, mock_platform):
    """Test the VersionWorkder.start() method for empty responses"""
    # GIVEN: A last check date, current version, and an instance of worker
    last_check_date = '1970-01-01'
    current_version = {'full': '2.1-bzr2345', 'version': '2.1', 'build': '2345'}
    mock_platform.system.return_value = 'Linux'
    mock_platform.release.return_value = '4.12.0-1-amd64'
    mock_requests.get.return_value = MagicMock(text='\n')
    worker = VersionWorker(last_check_date, current_version)

    # WHEN: The worker is run
    with patch.object(worker, 'new_version') as mock_new_version, \
            patch.object(worker, 'quit') as mock_quit:
        worker.start()

    # THEN: The check completes and the signal is emitted
    expected_download_url = 'https://www.openlp.org/files/nightly_version.txt'
    expected_headers = {'User-Agent': 'OpenLP/2.1-bzr2345 Linux/4.12.0-1-amd64; '}
    mock_requests.get.assert_called_once_with(expected_download_url, headers=expected_headers)
    assert mock_new_version.emit.call_count == 0
    mock_quit.emit.assert_called_once_with()


@patch('openlp.core.version.platform')
@patch('openlp.core.version.requests')
def test_worker_start_connection_error(mock_requests, mock_platform):
    """Test the VersionWorkder.start() method when a ConnectionError happens"""
    # GIVEN: A last check date, current version, and an instance of worker
    last_check_date = '1970-01-01'
    current_version = {'full': '2.0', 'version': '2.0', 'build': None}
    mock_platform.system.return_value = 'Linux'
    mock_platform.release.return_value = '4.12.0-1-amd64'
    mock_requests.get.side_effect = ConnectionError('Could not connect')
    worker = VersionWorker(last_check_date, current_version)

    # WHEN: The worker is run
    with patch.object(worker, 'no_internet') as mocked_no_internet, \
            patch.object(worker, 'quit') as mocked_quit:
        worker.start()

    # THEN: The check completes and the signal is emitted
    expected_download_url = 'https://www.openlp.org/files/version.txt'
    expected_headers = {'User-Agent': 'OpenLP/2.0 Linux/4.12.0-1-amd64; '}
    mock_requests.get.assert_called_with(expected_download_url, headers=expected_headers)
    assert mock_requests.get.call_count == 3
    mocked_no_internet.emit.assert_called_once_with()
    mocked_quit.emit.assert_called_once_with()


@patch('openlp.core.version.Settings')
def test_update_check_date(MockSettings):
    """Test that the update_check_date() function writes the correct date"""
    # GIVEN: A mocked Settings object
    mocked_settings = MagicMock()
    MockSettings.return_value = mocked_settings

    # WHEN: update_check_date() is called
    update_check_date()

    # THEN: The correct date should have been saved
    mocked_settings.setValue.assert_called_once_with('core/last version test', date.today().strftime('%Y-%m-%d'))


@patch('openlp.core.version.Settings')
@patch('openlp.core.version.run_thread')
def test_check_for_update(mocked_run_thread, MockSettings):
    """Test the check_for_update() function"""
    # GIVEN: A mocked settings object
    mocked_settings = MagicMock()
    mocked_settings.value.return_value = '1970-01-01'
    MockSettings.return_value = mocked_settings

    # WHEN: check_for_update() is called
    check_for_update(MagicMock())

    # THEN: The right things should have been called and a thread set in motion
    assert mocked_run_thread.call_count == 1


@patch('openlp.core.version.Settings')
@patch('openlp.core.version.run_thread')
def test_check_for_update_skipped(mocked_run_thread, MockSettings):
    """Test that the check_for_update() function skips running if it already ran today"""
    # GIVEN: A mocked settings object
    mocked_settings = MagicMock()
    mocked_settings.value.return_value = date.today().strftime('%Y-%m-%d')
    MockSettings.return_value = mocked_settings

    # WHEN: check_for_update() is called
    check_for_update(MagicMock())

    # THEN: The right things should have been called and a thread set in motion
    assert mocked_run_thread.call_count == 0


def test_get_version_dev_version():
    """Test the get_version() function"""
    # GIVEN: We're in dev mode
    with patch.object(sys, 'argv', ['--dev-version']), \
            patch('openlp.core.version.APPLICATION_VERSION', None):
        # WHEN: get_version() is run
        version = get_version()

    # THEN: version is something
    assert version