from decimal import Decimal
from django.test import TestCase
from django.utils.timezone import now

from pretix.base.models import Event, Organizer, User
from pretix.base import settings
from pretix.base.settings import SettingsSandbox


class SettingsTestCase(TestCase):

    def setUp(self):
        settings.DEFAULTS['test_default'] = 'def'
        self.organizer = Organizer.objects.create(name='Dummy', slug='dummy')
        self.event = Event.objects.create(
            organizer=self.organizer, name='Dummy', slug='dummy',
            date_from=now(),
        )

    def test_event_set_explicit(self):
        self.event.settings.test = 'foo'
        self.assertEqual(self.event.settings.test, 'foo')

        # Reload object
        self.event = Event.objects.get(identity=self.event.identity)
        self.assertEqual(self.event.settings.test, 'foo')

    def test_event_set_twice(self):
        self.event.settings.test = 'bar'
        self.event.settings.test = 'foo'
        self.assertEqual(self.event.settings.test, 'foo')

        # Reload object
        self.event = Event.objects.get(identity=self.event.identity)
        self.assertEqual(self.event.settings.test, 'foo')

    def test_event_set_on_organizer(self):
        self.organizer.settings.test = 'foo'
        self.assertEqual(self.organizer.settings.test, 'foo')
        self.assertEqual(self.event.settings.test, 'foo')

        # Reload object
        self.organizer = Organizer.objects.get(identity=self.organizer.identity)
        self.event = Event.objects.get(identity=self.event.identity)
        self.assertEqual(self.organizer.settings.test, 'foo')
        self.assertEqual(self.event.settings.test, 'foo')

    def test_override_organizer(self):
        self.organizer.settings.test = 'foo'
        self.event.settings.test = 'bar'
        self.assertEqual(self.organizer.settings.test, 'foo')
        self.assertEqual(self.event.settings.test, 'bar')

        # Reload object
        self.organizer = Organizer.objects.get(identity=self.organizer.identity)
        self.event = Event.objects.get(identity=self.event.identity)
        self.assertEqual(self.organizer.settings.test, 'foo')
        self.assertEqual(self.event.settings.test, 'bar')

    def test_default(self):
        self.assertEqual(self.organizer.settings.test_default, 'def')
        self.assertEqual(self.event.settings.test_default, 'def')
        self.assertEqual(self.event.settings.get('nonexistant', default='abc'), 'abc')

    def test_item_access(self):
        self.event.settings['foo'] = 'abc'
        self.assertEqual(self.event.settings['foo'], 'abc')
        del self.event.settings['foo']
        self.assertIsNone(self.event.settings['foo'])

    def test_delete(self):
        self.organizer.settings.test = 'foo'
        self.event.settings.test = 'bar'
        self.assertEqual(self.organizer.settings.test, 'foo')
        self.assertEqual(self.event.settings.test, 'bar')

        del self.event.settings.test
        self.assertEqual(self.event.settings.test, 'foo')

        self.event = Event.objects.get(identity=self.event.identity)
        self.assertEqual(self.event.settings.test, 'foo')

        del self.organizer.settings.test
        self.assertIsNone(self.organizer.settings.test)

        self.organizer = Organizer.objects.get(identity=self.organizer.identity)
        self.assertIsNone(self.organizer.settings.test)

    def test_serialize_str(self):
        self._test_serialization('ABC', as_type=str)

    def test_serialize_float(self):
        self._test_serialization(2.3, float)

    def test_serialize_int(self):
        self._test_serialization(2, int)

    def test_serialize_decimal(self):
        self._test_serialization(Decimal('2.3'), Decimal)

    def test_serialize_dict(self):
        self._test_serialization({'a': 'b', 'c': 'd'}, dict)

    def test_serialize_list(self):
        self._test_serialization([1, 2, 'a'], list)

    def test_serialize_bool(self):
        self._test_serialization(True, bool)
        self._test_serialization(False, bool)

    def test_serialize_versionable(self):
        self._test_serialization(self.event, Event)

    def test_serialize_model(self):
        self._test_serialization(User.objects.create_local_user(self.event, 'dummy', 'dummy'), User)

    def test_serialize_unknown(self):
        class Type:
            pass
        try:
            self._test_serialization(Type(), Type)
            self.assertTrue(False, 'No exception thrown!')
        except TypeError:
            pass

    def _test_serialization(self, val, as_type):
        self.event.settings.set('test', val)
        self.event.settings._flush()
        self.assertEqual(self.event.settings.get('test', as_type=as_type), val)
        self.assertIsInstance(self.event.settings.get('test', as_type=as_type), as_type)

    def test_sandbox(self):
        sandbox = SettingsSandbox('testing', 'foo', self.event)
        sandbox.set('foo', 'bar')
        self.assertEqual(sandbox.get('foo'), 'bar')
        self.assertEqual(self.event.settings.get('testing_foo_foo'), 'bar')
        self.assertIsNone(self.event.settings.get('foo'), 'bar')

        sandbox['bar'] = 'baz'
        sandbox.baz = 42

        self.event = Event.objects.get(identity=self.event.identity)
        sandbox = SettingsSandbox('testing', 'foo', self.event)
        self.assertEqual(sandbox['bar'], 'baz')
        self.assertEqual(sandbox.baz, '42')

        del sandbox.baz
        del sandbox['bar']

        self.assertIsNone(sandbox.bar)
        self.assertIsNone(sandbox['baz'])