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

##########################################################################
# OpenLP - Open Source Lyrics Projection                                 #
# ---------------------------------------------------------------------- #
# Copyright (c) 2008-2019 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/>. #
##########################################################################
"""
This module contains tests for the OpenLyrics song importer.
"""
import shutil
from pathlib import Path
from tempfile import mkdtemp
from unittest import TestCase
from unittest.mock import MagicMock, patch

from openlp.core.common.registry import Registry
from openlp.plugins.songs.lib.openlyricsexport import OpenLyricsExport
from tests.helpers.testmixin import TestMixin


class TestOpenLyricsExport(TestCase, TestMixin):
    """
    Test the functions in the :mod:`openlyricsexport` module.
    """
    def setUp(self):
        """
        Create the registry
        """
        Registry.create()
        self.temp_folder = Path(mkdtemp())

    def tearDown(self):
        """
        Cleanup
        """
        shutil.rmtree(self.temp_folder)

    def test_export_same_filename(self):
        """
        Test that files is not overwritten if songs has same title and author
        """
        # GIVEN: A mocked song_to_xml, 2 mocked songs, a mocked application and an OpenLyricsExport instance
        with patch('openlp.plugins.songs.lib.openlyricsexport.OpenLyrics.song_to_xml') as mocked_song_to_xml:
            mocked_song_to_xml.return_value = '<?xml version="1.0" encoding="UTF-8"?>\n<empty/>'
            author = MagicMock()
            author.display_name = 'Test Author'
            song = MagicMock()
            song.authors = [author]
            song.title = 'Test Title'
            parent = MagicMock()
            parent.stop_export_flag = False
            mocked_application_object = MagicMock()
            Registry().register('application', mocked_application_object)
            ol_export = OpenLyricsExport(parent, [song, song], self.temp_folder)

            # WHEN: Doing the export
            ol_export.do_export()

            # THEN: The exporter should have created 2 files
            assert (self.temp_folder / '{title} ({display_name}).xml'.format(
                title=song.title, display_name=author.display_name)).exists() is True
            assert (self.temp_folder / '{title} ({display_name})-1.xml'.format(
                title=song.title, display_name=author.display_name)).exists() is True

        def test_export_sort_of_authers_filename(self):
            """
            Test that files is not overwritten if songs has same title and author
            """
            # GIVEN: A mocked song_to_xml, 1 mocked songs, a mocked application and an OpenLyricsExport instance
            with patch('openlp.plugins.songs.lib.openlyricsexport.OpenLyrics.song_to_xml') as mocked_song_to_xml:
                mocked_song_to_xml.return_value = '<?xml version="1.0" encoding="UTF-8"?>\n<empty/>'
                authorA = MagicMock()
                authorA.display_name = 'a Author'
                authorB = MagicMock()
                authorB.display_name = 'b Author'
                songA = MagicMock()
                songA.authors = [authorA, authorB]
                songA.title = 'Test Title'
                songB = MagicMock()
                songB.authors = [authorB, authorA]
                songB.title = 'Test Title'

                parent = MagicMock()
                parent.stop_export_flag = False
                mocked_application_object = MagicMock()
                Registry().register('application', mocked_application_object)
                ol_export = OpenLyricsExport(parent, [songA, songB], self.temp_folder)

                # WHEN: Doing the export
                ol_export.do_export()

                # THEN: The exporter orders authers
                assert (self.temp_folder / '{title} ({display_name}).xml'.format(
                    title=song.title,
                    display_name=", ".join([authorA.display_name, authorB.display_name])
                )).exists() is True
                assert (self.temp_folder / '{title} ({display_name})-1.xml'.format(
                    title=song.title,
                    display_name=", ".join([authorA.display_name, authorB.display_name])
                )).exists() is True