from unittest.mock import MagicMock, patch

from openslides.projector import api as projector_api
from openslides.utils.test import TestCase


class ApiFunctions(TestCase):
    @patch('openslides.projector.api.default_slide')
    def test_get_projector_content(self, mock_default_slide):
        mock_slide = MagicMock()
        mock_slide.return_value = 'slide content'

        with patch.dict('openslides.projector.api.slide_callback',
                        values={'mock_slide': mock_slide}):
            value = projector_api.get_projector_content({'callback': 'mock_slide'})
            self.assertEqual(value, 'slide content')

            projector_api.get_projector_content({'callback': 'unknown_slide'})
            self.assertTrue(mock_default_slide.called)

            with patch('openslides.projector.api.config',
                       {'projector_active_slide': {'callback': 'mock_slide'}}):
                value = projector_api.get_projector_content()
                self.assertEqual(value, 'slide content')

            mock_slide.side_effect = projector_api.SlideError
            projector_api.get_projector_content({'callback': 'mock_slide'})
            self.assertTrue(mock_default_slide.called)

    @patch('openslides.projector.api.render_to_string')
    def test_default_slide(self, mock_render_to_string):
        projector_api.default_slide()
        mock_render_to_string.assert_called_with('projector/default_slide.html')

    @patch('openslides.projector.api.projector_overlays')
    def test_get_overlays(self, mock_projector_overlays):
        mock_overlay = MagicMock()
        mock_overlay.name = 'mock_overlay'
        mock_projector_overlays.send.return_value = ((None, mock_overlay), )
        value = projector_api.get_overlays()
        self.assertEqual(value, {'mock_overlay': mock_overlay})

    @patch('openslides.projector.api.projector_overlays')
    def test_get_overlays_inactive(self, mock_projector_overlays):
        mock_overlay = MagicMock()
        mock_overlay.name = 'mock_overlay_2'
        mock_overlay.is_active.return_value = False
        mock_projector_overlays.send.return_value = ((None, mock_overlay), )
        value = projector_api.get_overlays(only_active=True)
        self.assertNotEqual(value, {'mock_overlay_2': mock_overlay})

    @patch('openslides.projector.api.get_overlays')
    def test_get_projector_overlays_js(self, mock_get_overlays):
        overlay = MagicMock()
        mock_get_overlays.return_value = {'overlay': overlay}

        # Test with inactive overlay
        overlay.is_active.return_value = False
        value = projector_api.get_projector_overlays_js()
        self.assertEqual(value, [])

        # Test with active overlay without js
        overlay.is_active.return_value = True
        overlay.get_javascript.return_value = None
        value = projector_api.get_projector_overlays_js()
        self.assertEqual(value, [])

        # Test with active overlay with js
        overlay.get_javascript.return_value = 'some javascript'
        value = projector_api.get_projector_overlays_js()
        self.assertEqual(value, ['some javascript'])

    def test_register_slide(self):
        mock_slide_callback = {}
        mock_slide_model = {}
        with patch('openslides.projector.api.slide_model', mock_slide_model):
            with patch('openslides.projector.api.slide_callback', mock_slide_callback):
                projector_api.register_slide('some name', 'some callback')
                projector_api.register_slide('other name', 'other callback', 'Model')
        self.assertEqual(mock_slide_callback, {'some name': 'some callback',
                                               'other name': 'other callback'})
        self.assertEqual(mock_slide_model, {'other name': 'Model'})

    @patch('openslides.projector.api.render_to_string')
    @patch('openslides.projector.api.register_slide')
    def test_register_slide_model(self, mock_register_slide, mock_render_to_string):
        mock_SlideModel = MagicMock()
        mock_SlideModel.slide_callback_name = 'mock_callback_name'
        mock_SlideModel.DoesNotExist = Exception
        mock_slide_object = MagicMock()
        mock_slide_object.get_slide_context.return_value = 'some context'
        mock_SlideModel.objects.get.return_value = mock_slide_object

        projector_api.register_slide_model(mock_SlideModel, 'some template')
        used_args, __ = mock_register_slide.call_args
        self.assertEqual(used_args[0], 'mock_callback_name')
        self.assertEqual(used_args[2], mock_SlideModel)

        # Test the generated slide function
        used_args[1](pk=1)
        mock_render_to_string.assert_called_with('some template', 'some context')

        # Test with non existing object
        mock_SlideModel.objects.get.side_effect = Exception
        self.assertRaises(projector_api.SlideError, used_args[1], pk=1)

    def test_set_active_slide(self):
        mock_config = {}
        with patch('openslides.projector.api.config', mock_config):
            projector_api.set_active_slide('callback_name', some='kwargs')
        self.assertEqual(mock_config,
                         {'projector_active_slide': {'callback': 'callback_name',
                                                     'some': 'kwargs'}})

    def test_get_active_slide(self):
        mock_config = {'projector_active_slide': 'value'}
        with patch('openslides.projector.api.config', mock_config):
            value = projector_api.get_active_slide()
        self.assertEqual(value, 'value')

    def test_get_active_object(self):
        mock_Model = MagicMock()
        mock_Model.DoesNotExist = Exception
        mock_slide_model = {'mock_model': mock_Model}
        mock_active_slide = {'callback': 'unknown'}
        mock_get_active_slide = MagicMock(return_value=mock_active_slide)

        with patch('openslides.projector.api.get_active_slide', mock_get_active_slide):
            with patch('openslides.projector.api.slide_model', mock_slide_model):
                # test unknwon slide_callback_name
                self.assertIsNone(projector_api.get_active_object())

                # test unknown object
                mock_Model.objects.get.side_effect = Exception
                mock_active_slide.update(callback='mock_model', pk=42)
                self.assertIsNone(projector_api.get_active_object())
                mock_Model.objects.get.assert_called_with(pk=42)

                # test success
                mock_Model.objects.get.side_effect = None
                mock_Model.objects.get.return_value = 'success'
                self.assertEqual(projector_api.get_active_object(), 'success')