# -*- coding: utf-8 -*-
##########################################################################
# OpenLP - Open Source Lyrics Projection                                 #
# ---------------------------------------------------------------------- #
# Copyright (c) 2008-2020 OpenLP Developers                              #
# ---------------------------------------------------------------------- #
# 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.                                    #
#                                                                        #
# 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, see <https://www.gnu.org/licenses/>. #
##########################################################################
from unittest.mock import MagicMock

from openlp.core.state import State
from openlp.core.common.registry import Registry
from openlp.core.lib.plugin import PluginStatus


"""
Test the States class.
"""


def test_add_service(state):
    # GIVEN a new state
    # WHEN I add a new service
    State().add_service("test", 1, PluginStatus.Active)

    # THEN I have a saved service
    assert len(State().modules) == 1


def test_add_service_multiple(state):
    # GIVEN a new state
    # WHEN I add a new service twice
    State().add_service("test", 1, PluginStatus.Active)
    State().add_service("test", 1, PluginStatus.Active)

    # THEN I have a single saved service
    assert len(State().modules) == 1


def test_add_service_multiple_depend(state):
    # GIVEN a new state
    # WHEN I add a new service twice
    State().add_service("test", 1, 1, PluginStatus.Active)
    State().add_service("test1", 1, 1, PluginStatus.Active, "test")
    State().add_service("test1", 1, 1, PluginStatus.Active, "test")

    # THEN I have still have a single saved service and one dependency
    assert len(State().modules) == 2
    assert len(State().modules['test'].required_by) == 1


def test_add_service_multiple_depends(state):
    # GIVEN a new state
    # WHEN I add a new service twice
    State().add_service("test", 1, 1, PluginStatus.Active)
    State().add_service("test1", 1, 1, PluginStatus.Active, "test")
    State().add_service("test2", 1, 1, PluginStatus.Active, "test")

    # THEN I have a 3 modules and 2 dependencies
    assert len(State().modules) == 3
    assert len(State().modules['test'].required_by) == 2


def test_active_service(state):
    # GIVEN a new state
    # WHEN I add a new service which is Active
    State().add_service("test", 1, 1, PluginStatus.Active)

    # THEN I have a single saved service
    assert State().is_module_active('test') is True


def test_inactive_service(state):
    # GIVEN a new state
    # WHEN I add a new service which is Inactive
    State().add_service("test", 1, 1, PluginStatus.Inactive)

    # THEN I have a single saved service
    assert State().is_module_active('test') is False


def test_basic_preconditions_fail(state, registry):
    # GIVEN a new state
    Registry().register('test_plugin', MagicMock())

    # WHEN I add a new services with dependencies and a failed pre condition
    State().add_service("test", 1, 1, PluginStatus.Inactive)
    State().add_service("test2", 1, 1, PluginStatus.Inactive)
    State().add_service("test1", 1, 1, PluginStatus.Inactive, 'test')
    State().update_pre_conditions('test', False)

    # THEN correct the state when I flush the preconditions
    assert State().modules['test'].pass_preconditions is False
    assert State().modules['test2'].pass_preconditions is False
    assert State().modules['test1'].pass_preconditions is False
    State().flush_preconditions()
    assert State().modules['test'].pass_preconditions is False
    assert State().modules['test2'].pass_preconditions is False
    assert State().modules['test1'].pass_preconditions is False


def test_basic_preconditions_pass(state, registry):
    # GIVEN a new state
    Registry().register('test_plugin', MagicMock())

    # WHEN I add a new services with dependencies and a failed pre condition
    State().add_service("test", 1, 1, PluginStatus.Inactive)
    State().add_service("test2", 1, 1, PluginStatus.Inactive)
    State().add_service("test1", 1, 1, PluginStatus.Inactive, 'test')
    State().update_pre_conditions('test', True)

    # THEN correct the state when I flush the preconditions
    assert State().modules['test'].pass_preconditions is True
    assert State().modules['test2'].pass_preconditions is False
    assert State().modules['test1'].pass_preconditions is False
    State().flush_preconditions()
    assert State().modules['test'].pass_preconditions is True
    assert State().modules['test2'].pass_preconditions is False
    assert State().modules['test1'].pass_preconditions is True