# -*- coding: utf-8 -*-

##########################################################################
# OpenLP - Open Source Lyrics Projection                                 #
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# Copyright (c) 2008-2022 OpenLP Developers                              #
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# 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 3 of the License, or      #
# (at your option) any later version.                                    #
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# This program is distributed in the hope that it will be useful,        #
# but WITHOUT ANY WARRANTY; without even the implied warranty of         #
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"""
Package to test the openlp.core.ui.media package.
"""
from pathlib import Path
from unittest.mock import MagicMock, patch

import pytest

from openlp.core.common.registry import Registry
from openlp.core.ui import DisplayControllerType, HideMode
from openlp.core.ui.media.mediacontroller import MediaController
from openlp.core.ui.media import ItemMediaInfo, MediaState

from tests.utils.constants import RESOURCE_PATH


TEST_PATH = RESOURCE_PATH / 'media'
TEST_MEDIA = [['avi_file.avi', 61495], ['mp3_file.mp3', 134426], ['mpg_file.mpg', 9404], ['mp4_file.mp4', 188336]]


@pytest.fixture
def media_env(registry):
    """Local test setup"""
    Registry().register('service_manager', MagicMock())
    media_controller = MediaController()
    yield media_controller


def test_resize(media_env):
    """
    Test that the resize method is called correctly
    """
    # GIVEN: A media controller, a player and a display
    mocked_player = MagicMock()
    mocked_display = MagicMock()

    # WHEN: resize() is called
    media_env.media_controller.resize(mocked_display, mocked_player)

    # THEN: The player's resize method should be called correctly
    mocked_player.resize.assert_called_with(mocked_display)


def test_load_video(media_env, settings):
    """
    Test that the load_video runs correctly
    """
    # GIVEN: A media controller and a service item
    mocked_slide_controller = MagicMock()
    mocked_service_item = MagicMock()
    mocked_service_item.is_capable.return_value = False
    settings.setValue('media/live volume', 1)
    media_env.media_controller.current_media_players = MagicMock()
    media_env.media_controller._check_file_type = MagicMock(return_value=True)
    media_env.media_controller._display_controllers = MagicMock(return_value=mocked_slide_controller)
    media_env.media_controller._define_display = MagicMock()
    media_env.media_controller.media_reset = MagicMock()
    media_env.media_controller.media_play = MagicMock()
    media_env.media_controller.set_controls_visible = MagicMock()

    # WHEN: load_video() is called
    media_env.media_controller.load_video(DisplayControllerType.Live, mocked_service_item)

    # THEN: The current controller's media should be reset
    #       The volume should be set from the settings
    #       The video should have autoplayed
    #       The controls should have been made visible
    media_env.media_controller.media_reset.assert_called_once_with(mocked_slide_controller)
    assert mocked_slide_controller.media_info.volume == 1
    media_env.media_controller.media_play.assert_called_once_with(mocked_slide_controller)
    media_env.media_controller.set_controls_visible.assert_called_once_with(mocked_slide_controller, True)


def test_check_file_type_null(media_env):
    """
    Test that we don't try to play media when no players available
    """
    # GIVEN: A mocked UiStrings, get_used_players, controller, display and service_item
    mocked_controller = MagicMock()
    mocked_display = MagicMock()
    media_env.media_controller.media_players = MagicMock()

    # WHEN: calling _check_file_type when no players exists
    ret = media_env.media_controller._check_file_type(mocked_controller, mocked_display)

    # THEN: it should return False
    assert ret is False, '_check_file_type should return False when no media file matches.'


def test_check_file_video(media_env):
    """
    Test that we process a file that is valid
    """
    # GIVEN: A mocked UiStrings, get_used_players, controller, display and service_item
    mocked_controller = MagicMock()
    mocked_display = MagicMock()
    media_env.media_controller.media_players = MagicMock()
    mocked_controller.media_info = ItemMediaInfo()
    mocked_controller.media_info.file_info = [TEST_PATH / 'mp3_file.mp3']
    media_env.media_controller.current_media_players = {}
    media_env.media_controller.vlc_player = MagicMock()

    # WHEN: calling _check_file_type when no players exists
    ret = media_env.media_controller._check_file_type(mocked_controller, mocked_display)

    # THEN: it should return False
    assert ret is True, '_check_file_type should return True when audio file is present and matches.'


def test_check_file_audio(media_env):
    """
    Test that we process a file that is valid
    """
    # GIVEN: A mocked UiStrings, get_used_players, controller, display and service_item
    mocked_controller = MagicMock()
    mocked_display = MagicMock()
    media_env.media_controller.media_players = MagicMock()
    mocked_controller.media_info = ItemMediaInfo()
    mocked_controller.media_info.file_info = [TEST_PATH / 'mp4_file.mp4']
    media_env.media_controller.current_media_players = {}
    media_env.media_controller.vlc_player = MagicMock()

    # WHEN: calling _check_file_type when no players exists
    ret = media_env.media_controller._check_file_type(mocked_controller, mocked_display)

    # THEN: it should return False
    assert ret is True, '_check_file_type should return True when media file is present and matches.'


def test_media_play_msg(media_env):
    """
    Test that the media controller responds to the request to play a loaded video
    """
    # GIVEN: A media controller and a message with two elements
    message = (1, 2)

    # WHEN: media_play_msg() is called
    with patch.object(media_env.media_controller, u'media_play') as mocked_media_play:
        media_env.media_controller.media_play_msg(message)

    # THEN: The underlying method is called
    mocked_media_play.assert_called_with(1)


def test_media_pause_msg(media_env):
    """
    Test that the media controller responds to the request to pause a loaded video
    """
    # GIVEN: A media controller and a message with two elements
    message = (1, 2)

    # WHEN: media_play_msg() is called
    with patch.object(media_env.media_controller, u'media_pause') as mocked_media_pause:
        media_env.media_controller.media_pause_msg(message)

    # THEN: The underlying method is called
    mocked_media_pause.assert_called_with(1)


def test_media_stop_msg(media_env):
    """
    Test that the media controller responds to the request to stop a loaded video
    """
    # GIVEN: A media controller and a message with two elements
    message = (1, 2)

    # WHEN: media_play_msg() is called
    with patch.object(media_env.media_controller, u'media_stop') as mocked_media_stop:
        media_env.media_controller.media_stop_msg(message)

    # THEN: The underlying method is called
    mocked_media_stop.assert_called_with(1)


def test_media_stop(media_env):
    """
    Test that the media controller takes the correct actions when stopping media
    """
    # GIVEN: A live media controller and a message with two elements
    mocked_slide_controller = MagicMock()
    mocked_media_player = MagicMock()
    mocked_display = MagicMock(hide_mode=None)
    mocked_slide_controller.controller_type = 'media player'
    mocked_slide_controller.media_info = MagicMock(is_background=False)
    mocked_slide_controller.set_hide_mode = MagicMock()
    mocked_slide_controller.is_live = True
    media_env.media_controller.current_media_players = {'media player': mocked_media_player}
    media_env.media_controller.live_hide_timer = MagicMock()
    media_env.media_controller._define_display = MagicMock(return_value=mocked_display)

    # WHEN: media_stop() is called
    result = media_env.media_controller.media_stop(mocked_slide_controller)

    # THEN: Result should be successful, media player should be stopped and the hide timer should have started
    #       The controller's hide mode should be set to Blank
    assert result is True
    mocked_media_player.stop.assert_called_once_with(mocked_slide_controller)
    media_env.media_controller.live_hide_timer.start.assert_called_once()
    mocked_slide_controller.set_hide_mode.assert_called_once_with(HideMode.Blank)


def test_media_stop_no_hide_change(media_env):
    """
    Test that the media_stop doesn't change the hide mode of OpenLP when screen is visible
    """
    # GIVEN: A live media controller and a message with two elements
    mocked_slide_controller = MagicMock()
    mocked_media_player = MagicMock()
    mocked_display = MagicMock(hide_mode=HideMode.Screen)
    mocked_slide_controller.controller_type = 'media player'
    mocked_slide_controller.media_info = MagicMock(is_background=False)
    mocked_slide_controller.set_hide_mode = MagicMock()
    mocked_slide_controller.is_live = True
    media_env.media_controller.current_media_players = {'media player': mocked_media_player}
    media_env.media_controller.live_hide_timer = MagicMock()
    media_env.media_controller._define_display = MagicMock(return_value=mocked_display)

    # WHEN: media_stop() is called
    result = media_env.media_controller.media_stop(mocked_slide_controller)

    # THEN: Result should be successful, media player should be stopped and the hide timer should have started
    #       The controller's hide mode should not have been set
    assert result is True
    mocked_media_player.stop.assert_called_once_with(mocked_slide_controller)
    media_env.media_controller.live_hide_timer.start.assert_called_once()
    mocked_slide_controller.set_hide_mode.assert_not_called()


def test_media_volume_msg(media_env):
    """
    Test that the media controller responds to the request to change the volume
    """
    # GIVEN: A media controller and a message with two elements
    message = (1, [50])

    # WHEN: media_play_msg() is called
    with patch.object(media_env.media_controller, u'media_volume') as mocked_media_volume:
        media_env.media_controller.media_volume_msg(message)

    # THEN: The underlying method is called
    mocked_media_volume.assert_called_with(1, 50)


def test_media_seek_msg(media_env):
    """
    Test that the media controller responds to the request to seek to a particular position
    """
    # GIVEN: A media controller and a message with two elements
    message = (1, [800])

    # WHEN: media_play_msg() is called
    with patch.object(media_env.media_controller, u'media_seek') as mocked_media_seek:
        media_env.media_controller.media_seek_msg(message)

    # THEN: The underlying method is called
    mocked_media_seek.assert_called_with(1, 800)


def test_media_reset(media_env):
    """
    Test that the media controller conducts the correct actions when resetting
    """
    # GIVEN: A media controller, mocked slide controller, mocked media player and mocked display
    mocked_slide_controller = MagicMock()
    mocked_media_player = MagicMock()
    mocked_slide_controller.controller_type = 'media player'
    mocked_slide_controller.media_info = MagicMock(is_background=False)
    mocked_slide_controller.is_live = False
    media_env.media_controller.current_media_players = {'media player': mocked_media_player}
    media_env.media_controller.live_hide_timer = MagicMock()
    media_env.media_controller._media_set_visibility = MagicMock()

    # WHEN: media_reset() is called
    media_env.media_controller.media_reset(mocked_slide_controller)

    # THEN: The display should be shown, media should be hidden and removed
    media_env.media_controller._media_set_visibility.assert_called_once_with(mocked_slide_controller, False)
    assert 'media player' not in media_env.media_controller.current_media_players


def test_media_hide(media_env, registry):
    """
    Test that the media controller conducts the correct actions when hiding
    """
    # GIVEN: A media controller, mocked slide controller, mocked media player and mocked display
    mocked_slide_controller = MagicMock()
    mocked_media_player = MagicMock()
    mocked_media_player.get_live_state.return_value = MediaState.Playing
    mocked_slide_controller.controller_type = 'media player'
    mocked_slide_controller.media_info = MagicMock(is_background=False)
    mocked_slide_controller.get_hide_mode = MagicMock(return_value=None)
    mocked_slide_controller.is_live = False
    Registry().register('live_controller', mocked_slide_controller)
    media_env.media_controller.current_media_players = {'media player': mocked_media_player}
    media_env.media_controller.live_kill_timer = MagicMock(isActive=MagicMock(return_value=False))
    media_env.media_controller._media_set_visibility = MagicMock()
    media_env.media_controller.media_pause = MagicMock()

    # WHEN: media_hide() is called
    media_env.media_controller.media_hide(is_live=True)

    # THEN: media should be paused and hidden, but the player should still exist
    media_env.media_controller.media_pause.assert_called_once_with(mocked_slide_controller)
    media_env.media_controller._media_set_visibility.assert_called_once_with(mocked_slide_controller, False)
    assert 'media player' in media_env.media_controller.current_media_players


@pytest.mark.parametrize('file_name,media_length', TEST_MEDIA)
def test_media_length(file_name, media_length, media_env):
    """
    Check the duration of a few different files via MediaInfo
    """
    # GIVEN: a media file
    full_path = TEST_PATH / file_name

    # WHEN the media data is retrieved
    results = media_env.media_controller.media_length(full_path)

    # THEN you can determine the run time
    assert results == media_length, f'The correct duration for {file_name} should be {media_length}, was {results}'


@patch('openlp.core.ui.media.mediacontroller.MediaInfo.parse')
@patch('openlp.core.ui.media.mediacontroller.Path')
def test_media_length_duration_none(MockPath, mocked_parse, media_env):
    """
    Test that when MediaInfo doesn't give us a duration, we default to 0
    """
    # GIVEN: A fake media file and a mocked MediaInfo.parse() function
    mocked_parse.return_value = MagicMock(tracks=[MagicMock(duration=None)])
    file_path = 'path/to/fake/video.mkv'

    # WHEN the media data is retrieved
    duration = media_env.media_controller.media_length(file_path)

    # THEN you can determine the run time
    assert duration == 0, 'The duration should be 0'


@patch('openlp.core.ui.media.mediacontroller.MediaInfo.can_parse')
def test_media_length_no_can_parse(mocked_can_parse, media_env):
    """
    Check that 0 is returned when MediaInfo cannot parse
    """
    # GIVEN: A fake media file and a mocked MediaInfo.can_parse() function
    mocked_can_parse.return_value = False
    file_path = Path('path/to/fake/video.mkv')

    # WHEN the media data is retrieved
    duration = media_env.media_controller.media_length(file_path)

    # THEN you can determine the run time
    assert duration == 0, 'The duration should be 0'


def test_on_media_play(media_env):
    """
    Test the on_media_play method
    """
    # GIVEN: A mocked live controller and a mocked media_play() method
    mocked_live_controller = MagicMock()
    Registry().register('live_controller', mocked_live_controller)
    media_env.media_controller.media_play = MagicMock()

    # WHEN: the on_media_play() method is called
    media_env.media_controller.on_media_play()

    # The mocked live controller should be called
    media_env.media_controller.media_play.assert_called_once_with(mocked_live_controller)


def test_on_media_pause(media_env):
    """
    Test the on_media_pause method
    """
    # GIVEN: A mocked live controller and a mocked media_pause() method
    mocked_live_controller = MagicMock()
    Registry().register('live_controller', mocked_live_controller)
    media_env.media_controller.media_pause = MagicMock()

    # WHEN: the on_media_pause() method is called
    media_env.media_controller.on_media_pause()

    # The mocked live controller should be called
    media_env.media_controller.media_pause.assert_called_once_with(mocked_live_controller)


def test_on_media_stop(media_env):
    """
    Test the on_media_stop method
    """
    # GIVEN: A mocked live controller and a mocked media_stop() method
    mocked_live_controller = MagicMock()
    Registry().register('live_controller', mocked_live_controller)
    media_env.media_controller.media_stop = MagicMock()

    # WHEN: the on_media_stop() method is called
    media_env.media_controller.on_media_stop()

    # The mocked live controller should be called
    media_env.media_controller.media_stop.assert_called_once_with(mocked_live_controller)


def test_display_controllers_live(media_env):
    """
    Test that the display_controllers() method returns the live controller when requested
    """
    # GIVEN: A mocked live controller
    mocked_live_controller = MagicMock()
    mocked_preview_controller = MagicMock()
    Registry().register('live_controller', mocked_live_controller)
    Registry().register('preview_controller', mocked_preview_controller)

    # WHEN: display_controllers() is called with DisplayControllerType.Live
    controller = media_env.media_controller._display_controllers(DisplayControllerType.Live)

    # THEN: the controller should be the live controller
    assert controller is mocked_live_controller


def test_display_controllers_preview(media_env):
    """
    Test that the display_controllers() method returns the preview controller when requested
    """
    # GIVEN: A mocked live controller
    mocked_live_controller = MagicMock()
    mocked_preview_controller = MagicMock()
    Registry().register('live_controller', mocked_live_controller)
    Registry().register('preview_controller', mocked_preview_controller)

    # WHEN: display_controllers() is called with DisplayControllerType.Preview
    controller = media_env.media_controller._display_controllers(DisplayControllerType.Preview)

    # THEN: the controller should be the live controller
    assert controller is mocked_preview_controller


def test_set_controls_visible(media_env):
    """
    Test that "set_controls_visible" sets the media controls on the controller to be visible or not
    """
    # GIVEN: A mocked controller
    mocked_controller = MagicMock()

    # WHEN: Set to visible
    MediaController.set_controls_visible(mocked_controller, True)

    # THEN: The media controls should have been set to visible
    mocked_controller.mediabar.setVisible.assert_called_once_with(True)


@patch('openlp.core.ui.media.mediacontroller.ItemMediaInfo')
def test_setup_display(MockItemMediaInfo, media_env):
    """
    Test that the display/controllers are set up correctly
    """
    # GIVEN: A media controller object and some mocks
    mocked_media_info = MagicMock()
    MockItemMediaInfo.return_value = mocked_media_info
    media_env.media_controller.vlc_player = MagicMock()
    mocked_display = MagicMock()
    media_env.media_controller._define_display = MagicMock(return_value=mocked_display)
    media_env.media_controller.vlc_player = MagicMock()
    controller = MagicMock()

    # WHEN: setup_display() is called
    media_env.media_controller.setup_display(controller, True)

    # THEN: The right calls should have been made
    assert controller.media_info == mocked_media_info
    assert controller.has_audio is False
    media_env.media_controller._define_display.assert_called_once_with(controller)
    media_env.media_controller.vlc_player.setup(controller, mocked_display, False)


def test_media_play(media_env):
    """
    Test that the display/controllers are set up correctly
    """
    # GIVEN: A mocked controller where is_background is false
    media_env.current_media_players = MagicMock()
    Registry().register('settings', MagicMock())
    media_env.live_timer = MagicMock()
    media_env.live_hide_timer = MagicMock()
    mocked_controller = MagicMock()
    mocked_controller.media_info.is_background = False

    # WHEN: media_play is called
    result = media_env.media_play(mocked_controller)

    # THEN: The web display should become transparent (only tests that the theme is reset here)
    # And the function should return true to indicate success
    assert result is True
    media_env.live_hide_timer.stop.assert_called_once_with()
    mocked_controller._set_theme.assert_called_once()
