from unittest import mock

from django.test import TestCase

from payment import events
from payment.models import Order, PaymentEvent
from payment.services import cancel_pending_order, create_order


class PaymentEventTests(TestCase):
    def test_create_order_records_event_once_per_order(self):
        order, _ = create_order(user_id=7, amount=1000, idempotency_key='k-1')
        create_order(user_id=7, amount=1000, idempotency_key='k-1')  # همان سفارش، رویدادِ دوم نه
        rows = PaymentEvent.objects.filter(order_id=order.id, event='order_created')
        self.assertEqual(rows.count(), 1)
        self.assertEqual(rows.get().user_id, 7)

    def test_cancel_records_event(self):
        order, _ = create_order(user_id=7, amount=1000)
        cancel_pending_order(order, staff='tester')
        self.assertTrue(PaymentEvent.objects.filter(order_id=order.id, event='admin_cancel').exists())

    def test_failure_to_record_does_not_raise(self):
        with mock.patch.object(PaymentEvent.objects, 'create', side_effect=RuntimeError('db')):
            with self.assertLogs('payment.events', level='ERROR'):
                events.record('x', user_id=1)
        self.assertEqual(Order.objects.count(), 0)