# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4

###############################################################################
# OpenLP - Open Source Lyrics Projection                                      #
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# Copyright (c) 2008-2015 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; version 2 of the License.                              #
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for    #
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"""
Package to test the openlp.core.utils.actions package.
"""
from unittest import TestCase

from PyQt5 import QtGui, QtCore, QtWidgets

from openlp.core.common import Settings
from openlp.core.utils import ActionList
from openlp.core.utils.actions import CategoryActionList
from tests.functional import MagicMock
from tests.helpers.testmixin import TestMixin


class TestCategoryActionList(TestCase):
    def setUp(self):
        """
        Create an instance and a few example actions.
        """
        self.action1 = MagicMock()
        self.action1.text.return_value = 'first'
        self.action2 = MagicMock()
        self.action2.text.return_value = 'second'
        self.list = CategoryActionList()

    def tearDown(self):
        """
        Clean up
        """
        del self.list

    def contains_test(self):
        """
        Test the __contains__() method
        """
        # GIVEN: The list.
        # WHEN: Add an action
        self.list.append(self.action1)

        # THEN: The actions should (not) be in the list.
        self.assertTrue(self.action1 in self.list)
        self.assertFalse(self.action2 in self.list)

    def len_test(self):
        """
        Test the __len__ method
        """
        # GIVEN: The list.
        # WHEN: Do nothing.
        # THEN: Check the length.
        self.assertEqual(len(self.list), 0, "The length should be 0.")

        # GIVEN: The list.
        # WHEN: Append an action.
        self.list.append(self.action1)

        # THEN: Check the length.
        self.assertEqual(len(self.list), 1, "The length should be 1.")

    def append_test(self):
        """
        Test the append() method
        """
        # GIVEN: The list.
        # WHEN: Append an action.
        self.list.append(self.action1)
        self.list.append(self.action2)

        # THEN: Check if the actions are in the list and check if they have the correct weights.
        self.assertTrue(self.action1 in self.list)
        self.assertTrue(self.action2 in self.list)
        self.assertEqual(self.list.actions[0], (0, self.action1))
        self.assertEqual(self.list.actions[1], (1, self.action2))

    def add_test(self):
        """
        Test the add() method
        """
        # GIVEN: The list and weights.
        action1_weight = 42
        action2_weight = 41

        # WHEN: Add actions and their weights.
        self.list.add(self.action1, action1_weight)
        self.list.add(self.action2, action2_weight)

        # THEN: Check if they were added and have the specified weights.
        self.assertTrue(self.action1 in self.list)
        self.assertTrue(self.action2 in self.list)
        # Now check if action1 is second and action2 is first (due to their weights).
        self.assertEqual(self.list.actions[0], (41, self.action2))
        self.assertEqual(self.list.actions[1], (42, self.action1))

    def remove_test(self):
        """
        Test the remove() method
        """
        # GIVEN: The list
        self.list.append(self.action1)

        # WHEN: Delete an item from the list.
        self.list.remove(self.action1)

        # THEN: Now the element should not be in the list anymore.
        self.assertFalse(self.action1 in self.list)

        # THEN: Check if an exception is raised when trying to remove a not present action.
        self.assertRaises(ValueError, self.list.remove, self.action2)


class TestActionList(TestCase, TestMixin):
    """
    Test the ActionList class
    """

    def setUp(self):
        """
        Prepare the tests
        """
        self.action_list = ActionList.get_instance()
        self.build_settings()
        self.settings = Settings()
        self.settings.beginGroup('shortcuts')

    def tearDown(self):
        """
        Clean up
        """
        self.settings.endGroup()
        self.destroy_settings()

    def test_add_action_same_parent(self):
        """
        ActionList test - Tests the add_action method. The actions have the same parent, the same shortcuts and both
        have the QtCore.Qt.WindowShortcut shortcut context set.
        """
        # GIVEN: Two actions with the same shortcuts.
        parent = QtCore.QObject()
        action1 = QtWidgets.QAction(parent)
        action1.setObjectName('action1')
        action_with_same_shortcuts1 = QtWidgets.QAction(parent)
        action_with_same_shortcuts1.setObjectName('action_with_same_shortcuts1')
        # Add default shortcuts to Settings class.
        default_shortcuts = {
            'shortcuts/action1': [QtGui.QKeySequence('a'), QtGui.QKeySequence('b')],
            'shortcuts/action_with_same_shortcuts1': [QtGui.QKeySequence('b'), QtGui.QKeySequence('a')]
        }
        Settings.extend_default_settings(default_shortcuts)

        # WHEN: Add the two actions to the action list.
        self.action_list.add_action(action1, 'example_category')
        self.action_list.add_action(action_with_same_shortcuts1, 'example_category')
        # Remove the actions again.
        self.action_list.remove_action(action1, 'example_category')
        self.action_list.remove_action(action_with_same_shortcuts1, 'example_category')

        # THEN: As both actions have the same shortcuts, they should be removed from one action.
        assert len(action1.shortcuts()) == 2, 'The action should have two shortcut assigned.'
        assert len(action_with_same_shortcuts1.shortcuts()) == 0, 'The action should not have a shortcut assigned.'

    def test_add_action_different_parent(self):
        """
        ActionList test - Tests the add_action method. The actions have the different parent, the same shortcuts and
        both have the QtCore.Qt.WindowShortcut shortcut context set.
        """
        # GIVEN: Two actions with the same shortcuts.
        parent = QtCore.QObject()
        action2 = QtWidgets.QAction(parent)
        action2.setObjectName('action2')
        second_parent = QtCore.QObject()
        action_with_same_shortcuts2 = QtWidgets.QAction(second_parent)
        action_with_same_shortcuts2.setObjectName('action_with_same_shortcuts2')
        # Add default shortcuts to Settings class.
        default_shortcuts = {
            'shortcuts/action2': [QtGui.QKeySequence('c'), QtGui.QKeySequence('d')],
            'shortcuts/action_with_same_shortcuts2': [QtGui.QKeySequence('d'), QtGui.QKeySequence('c')]
        }
        Settings.extend_default_settings(default_shortcuts)

        # WHEN: Add the two actions to the action list.
        self.action_list.add_action(action2, 'example_category')
        self.action_list.add_action(action_with_same_shortcuts2, 'example_category')
        # Remove the actions again.
        self.action_list.remove_action(action2, 'example_category')
        self.action_list.remove_action(action_with_same_shortcuts2, 'example_category')

        # THEN: As both actions have the same shortcuts, they should be removed from one action.
        assert len(action2.shortcuts()) == 2, 'The action should have two shortcut assigned.'
        assert len(action_with_same_shortcuts2.shortcuts()) == 0, 'The action should not have a shortcut assigned.'

    def test_add_action_different_context(self):
        """
        ActionList test - Tests the add_action method. The actions have the different parent, the same shortcuts and
        both have the QtCore.Qt.WidgetShortcut shortcut context set.
        """
        # GIVEN: Two actions with the same shortcuts.
        parent = QtCore.QObject()
        action3 = QtWidgets.QAction(parent)
        action3.setObjectName('action3')
        action3.setShortcutContext(QtCore.Qt.WidgetShortcut)
        second_parent = QtCore.QObject()
        action_with_same_shortcuts3 = QtWidgets.QAction(second_parent)
        action_with_same_shortcuts3.setObjectName('action_with_same_shortcuts3')
        action_with_same_shortcuts3.setShortcutContext(QtCore.Qt.WidgetShortcut)
        # Add default shortcuts to Settings class.
        default_shortcuts = {
            'shortcuts/action3': [QtGui.QKeySequence('e'), QtGui.QKeySequence('f')],
            'shortcuts/action_with_same_shortcuts3': [QtGui.QKeySequence('e'), QtGui.QKeySequence('f')]
        }
        Settings.extend_default_settings(default_shortcuts)

        # WHEN: Add the two actions to the action list.
        self.action_list.add_action(action3, 'example_category2')
        self.action_list.add_action(action_with_same_shortcuts3, 'example_category2')
        # Remove the actions again.
        self.action_list.remove_action(action3, 'example_category2')
        self.action_list.remove_action(action_with_same_shortcuts3, 'example_category2')

        # THEN: Both action should keep their shortcuts.
        assert len(action3.shortcuts()) == 2, 'The action should have two shortcut assigned.'
        assert len(action_with_same_shortcuts3.shortcuts()) == 2, 'The action should have two shortcuts assigned.'
