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

##########################################################################
# OpenLP - Open Source Lyrics Projection                                 #
# ---------------------------------------------------------------------- #
# 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.                                    #
#                                                                        #
# 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.                           #
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# You should have received a copy of the GNU General Public License      #
# along with this program.  If not, see <https://www.gnu.org/licenses/>. #
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"""
Test the MediaShout importer
"""
from collections import namedtuple
from unittest import TestCase, skipUnless
from unittest.mock import MagicMock, call, patch

from openlp.core.common.registry import Registry


try:
    from openlp.plugins.songs.lib.importers.mediashout import MediaShoutImport
    CAN_RUN_TESTS = True
except ImportError:
    CAN_RUN_TESTS = False


@skipUnless(CAN_RUN_TESTS, 'Not Windows, skipping test')
class TestMediaShoutImport(TestCase):
    """
    Test the MediaShout importer
    """
    def setUp(self):
        """
        Set the tests up
        """
        Registry().create()

    def test_constructor(self):
        """
        Test the MediaShoutImport constructor
        """
        # GIVEN: A MediaShoutImport class
        # WHEN: It is created
        importer = MediaShoutImport(MagicMock(), file_path='mediashout.db')

        # THEN: It should not be None
        assert importer is not None

    @patch('openlp.plugins.songs.lib.importers.mediashout.pyodbc')
    def test_do_import_fails_to_connect(self, mocked_pyodbc):
        """
        Test that do_import exits early when unable to connect to the database
        """
        # GIVEN: A MediaShoutImport instance
        importer = MediaShoutImport(MagicMock(), file_path='mediashout.db')
        mocked_pyodbc.connect.side_effect = Exception('Unable to connect')

        # WHEN: do_import is called
        with patch.object(importer, 'log_error') as mocked_log_error:
            importer.do_import()

        # THEN: The songs should have been imported
        mocked_log_error.assert_called_once_with('mediashout.db', 'Unable to open the MediaShout database.')

    @patch('openlp.plugins.songs.lib.importers.mediashout.pyodbc')
    def test_do_import(self, mocked_pyodbc):
        """
        Test the MediaShoutImport do_import method
        """
        SongRecord = namedtuple('SongRecord', 'Record, Title, Author, Copyright, SongID, CCLI, Notes')
        VerseRecord = namedtuple('VerseRecord', 'Type, Number, Text')
        PlayOrderRecord = namedtuple('PlayOrderRecord', 'Type, Number, POrder')
        ThemeRecord = namedtuple('ThemeRecord', 'Name')
        GroupRecord = namedtuple('GroupRecord', 'Name')
        song = SongRecord(1, 'Amazing Grace', 'William Wilberforce', 'Public Domain', 1, '654321', '')
        verse = VerseRecord('Verse', 1, 'Amazing grace, how sweet the sound\nThat saved a wretch like me')
        play_order = PlayOrderRecord('Verse', 1, 1)
        theme = ThemeRecord('Grace')
        group = GroupRecord('Hymns')

        # GIVEN: A MediaShoutImport instance and a bunch of stuff mocked out
        importer = MediaShoutImport(MagicMock(), file_path='mediashout.db')
        mocked_cursor = MagicMock()
        mocked_cursor.fetchall.side_effect = [[song], [verse], [play_order], [theme], [group]]
        mocked_cursor.tables.return_value.fetchone.return_value = True
        mocked_connection = MagicMock()
        mocked_connection.cursor.return_value = mocked_cursor
        mocked_pyodbc.connect.return_value = mocked_connection

        # WHEN: do_import is called
        with patch.object(importer, 'import_wizard'), \
                patch.object(importer, 'process_song') as mocked_process_song:
            importer.do_import()

        # THEN: The songs should have been imported
        expected_execute_calls = [
            call('SELECT Record, Title, Author, Copyright, SongID, CCLI, Notes FROM Songs ORDER BY Title'),
            call('SELECT Type, Number, Text FROM Verses WHERE Record = ? ORDER BY Type, Number', 1.0),
            call('SELECT Type, Number, POrder FROM PlayOrder WHERE Record = ? ORDER BY POrder', 1.0),
            call('SELECT Name FROM Themes INNER JOIN SongThemes ON SongThemes.ThemeId = Themes.ThemeId '
                 'WHERE SongThemes.Record = ?', 1.0),
            call('SELECT Name FROM Groups INNER JOIN SongGroups ON SongGroups.GroupId = Groups.GroupId '
                 'WHERE SongGroups.Record = ?', 1.0)
        ]
        assert expected_execute_calls == mocked_cursor.execute.call_args_list
        mocked_process_song.assert_called_once_with(song, [verse], [play_order], [theme, group])

    @patch('openlp.plugins.songs.lib.importers.mediashout.pyodbc')
    def test_do_import_without_topics(self, mocked_pyodbc):
        """
        Test the MediaShoutImport do_import method with the Themes and Groups tables don't exist
        """
        SongRecord = namedtuple('SongRecord', 'Record, Title, Author, Copyright, SongID, CCLI, Notes')
        VerseRecord = namedtuple('VerseRecord', 'Type, Number, Text')
        PlayOrderRecord = namedtuple('PlayOrderRecord', 'Type, Number, POrder')
        song = SongRecord(1, 'Amazing Grace', 'William Wilberforce', 'Public Domain', 1, '654321', '')
        verse = VerseRecord('Verse', 1, 'Amazing grace, how sweet the sound\nThat saved a wretch like me')
        play_order = PlayOrderRecord('Verse', 1, 1)

        # GIVEN: A MediaShoutImport instance and a bunch of stuff mocked out
        importer = MediaShoutImport(MagicMock(), file_path='mediashout.db')
        mocked_cursor = MagicMock()
        mocked_cursor.fetchall.side_effect = [[song], [verse], [play_order]]
        mocked_cursor.tables.return_value.fetchone.return_value = False
        mocked_connection = MagicMock()
        mocked_connection.cursor.return_value = mocked_cursor
        mocked_pyodbc.connect.return_value = mocked_connection

        # WHEN: do_import is called
        with patch.object(importer, 'import_wizard'), \
                patch.object(importer, 'process_song') as mocked_process_song:
            importer.do_import()

        # THEN: The songs should have been imported
        expected_execute_calls = [
            call('SELECT Record, Title, Author, Copyright, SongID, CCLI, Notes FROM Songs ORDER BY Title'),
            call('SELECT Type, Number, Text FROM Verses WHERE Record = ? ORDER BY Type, Number', 1.0),
            call('SELECT Type, Number, POrder FROM PlayOrder WHERE Record = ? ORDER BY POrder', 1.0)
        ]
        assert expected_execute_calls == mocked_cursor.execute.call_args_list
        mocked_process_song.assert_called_once_with(song, [verse], [play_order], [])

    @patch('openlp.plugins.songs.lib.importers.mediashout.pyodbc')
    def test_do_import_breaks_on_stop(self, mocked_pyodbc):
        """
        Test the MediaShoutImport do_import stops when the user presses the cancel button
        """
        SongRecord = namedtuple('SongRecord', 'Record, Title, Author, Copyright, SongID, CCLI, Notes')
        song = SongRecord(1, 'Amazing Grace', 'William Wilberforce', 'Public Domain', 1, '654321', '')

        # GIVEN: A MediaShoutImport instance and a bunch of stuff mocked out
        importer = MediaShoutImport(MagicMock(), file_path='mediashout.db')
        mocked_cursor = MagicMock()
        mocked_cursor.fetchall.return_value = [song]
        mocked_connection = MagicMock()
        mocked_connection.cursor.return_value = mocked_cursor
        mocked_pyodbc.connect.return_value = mocked_connection

        # WHEN: do_import is called, but cancelled
        with patch.object(importer, 'import_wizard'), \
                patch.object(importer, 'process_song') as mocked_process_song:
            importer.stop_import_flag = True
            importer.do_import()

        # THEN: The songs should have been imported
        mocked_cursor.execute.assert_called_once_with(
            'SELECT Record, Title, Author, Copyright, SongID, CCLI, Notes FROM Songs ORDER BY Title')
        mocked_process_song.assert_not_called()

    def test_process_song(self):
        """
        Test the process_song method of the MediaShoutImport
        """
        # GIVEN: An importer and a song
        SongRecord = namedtuple('SongRecord', 'Record, Title, Author, Copyright, SongID, CCLI, Notes')
        VerseRecord = namedtuple('VerseRecord', 'Type, Number, Text')
        PlayOrderRecord = namedtuple('PlayOrderRecord', 'Type, Number, POrder')
        ThemeRecord = namedtuple('ThemeRecord', 'Name')
        GroupRecord = namedtuple('GroupRecord', 'Name')
        song = SongRecord(1, 'Amazing Grace', 'William Wilberforce', 'Public Domain', 'Hymns', '654321',
                          'Great old hymn')
        verse = VerseRecord(0, 1, 'Amazing grace, how sweet the sound\nThat saved a wretch like me')
        play_order = PlayOrderRecord(0, 1, 1)
        theme = ThemeRecord('Grace')
        group = GroupRecord('Hymns')
        importer = MediaShoutImport(MagicMock(), file_path='mediashout.db')

        # WHEN: A song is processed
        with patch.object(importer, 'set_defaults') as mocked_set_defaults, \
                patch.object(importer, 'parse_author') as mocked_parse_author, \
                patch.object(importer, 'add_copyright') as mocked_add_copyright, \
                patch.object(importer, 'add_verse') as mocked_add_verse, \
                patch.object(importer, 'finish') as mocked_finish:
            importer.topics = []
            importer.verse_order_list = []
            importer.process_song(song, [verse], [play_order], [theme, group])

        # THEN: It should be added to the database
        mocked_set_defaults.assert_called_once_with()
        assert 'Amazing Grace' == importer.title
        mocked_parse_author.assert_called_once_with('William Wilberforce')
        mocked_add_copyright.assert_called_once_with('Public Domain')
        assert 'Great old hymn' == importer.comments
        assert ['Grace', 'Hymns'] == importer.topics
        assert 'Hymns' == importer.song_book_name
        assert '' == importer.song_number
        mocked_add_verse.assert_called_once_with(
            'Amazing grace, how sweet the sound\nThat saved a wretch like me', 'V1')
        assert ['V1'] == importer.verse_order_list
        mocked_finish.assert_called_once_with()

    def test_process_song_with_song_number(self):
        """
        Test the process_song method with a song that has a song number
        """
        # GIVEN: An importer and a song
        SongRecord = namedtuple('SongRecord', 'Record, Title, Author, Copyright, SongID, CCLI, Notes')
        VerseRecord = namedtuple('VerseRecord', 'Type, Number, Text')
        PlayOrderRecord = namedtuple('PlayOrderRecord', 'Type, Number, POrder')
        ThemeRecord = namedtuple('ThemeRecord', 'Name')
        GroupRecord = namedtuple('GroupRecord', 'Name')
        song = SongRecord(1, 'Amazing Grace', 'William Wilberforce', 'Public Domain', 'Hymns-2', '654321',
                          'Great old hymn')
        verse = VerseRecord(0, 1, 'Amazing grace, how sweet the sound\nThat saved a wretch like me')
        play_order = PlayOrderRecord(0, 1, 1)
        theme = ThemeRecord('Grace')
        group = GroupRecord('Hymns')
        importer = MediaShoutImport(MagicMock(), file_path='mediashout.db')

        # WHEN: A song is processed
        with patch.object(importer, 'set_defaults') as mocked_set_defaults, \
                patch.object(importer, 'parse_author') as mocked_parse_author, \
                patch.object(importer, 'add_copyright') as mocked_add_copyright, \
                patch.object(importer, 'add_verse') as mocked_add_verse, \
                patch.object(importer, 'finish') as mocked_finish:
            importer.topics = []
            importer.verse_order_list = []
            importer.process_song(song, [verse], [play_order], [theme, group])

        # THEN: It should be added to the database
        mocked_set_defaults.assert_called_once_with()
        assert 'Amazing Grace' == importer.title
        mocked_parse_author.assert_called_once_with('William Wilberforce')
        mocked_add_copyright.assert_called_once_with('Public Domain')
        assert 'Great old hymn' == importer.comments
        assert ['Grace', 'Hymns'] == importer.topics
        assert 'Hymns' == importer.song_book_name
        assert '2' == importer.song_number
        mocked_add_verse.assert_called_once_with(
            'Amazing grace, how sweet the sound\nThat saved a wretch like me', 'V1')
        assert ['V1'], importer.verse_order_list
        mocked_finish.assert_called_once_with()
