from unittest.mock import MagicMock, patch

from django.test import TestCase

from workflows.models import WorkflowConfig
from workflows.emailing import send_system_email


class EmailingFallbackTests(TestCase):
    @patch('workflows.emailing.EmailMessage')
    @patch('workflows.emailing.get_connection')
    def test_uses_workflowconfig_smtp_when_no_active_system_config(self, mock_get_connection, mock_email_message):
        WorkflowConfig.objects.update_or_create(
            name='Default',
            defaults={
                'smtp_server': 'mx.tub.co',
                'smtp_port': 465,
                'email_account': 'onboarding@tub.co',
                'email_password': 'secret',
                'smtp_use_ssl': True,
                'smtp_use_tls': False,
            },
        )

        fake_connection = object()
        mock_get_connection.return_value = fake_connection
        msg_instance = MagicMock()
        mock_email_message.return_value = msg_instance

        send_system_email(
            subject='x',
            body='y',
            to=['target@example.com'],
        )

        self.assertEqual(mock_get_connection.call_count, 1)
        kwargs = mock_get_connection.call_args.kwargs
        self.assertEqual(kwargs['host'], 'mx.tub.co')
        self.assertEqual(kwargs['port'], 465)
        self.assertEqual(kwargs['username'], 'onboarding@tub.co')
        self.assertEqual(kwargs['password'], 'secret')
        self.assertEqual(kwargs['use_ssl'], True)
        self.assertEqual(kwargs['use_tls'], False)