import datetime
from decimal import Decimal

import pytest
from django.utils import timezone
from django.utils.timezone import now
from pytz import UTC

from pretix.base.models import Event, Voucher


@pytest.fixture
def item(event):
    return event.items.create(name="Budget Ticket", default_price=23)


@pytest.fixture
def voucher(event, item):
    return event.vouchers.create(item=item, price_mode='set', value=12, tag='Foo')


@pytest.fixture
def quota(event, item):
    q = event.quotas.create(name="Budget Quota", size=200)
    q.items.add(item)
    return q


TEST_VOUCHER_RES = {
    'id': 1,
    'code': '43K6LKM37FBVR2YG',
    'max_usages': 1,
    'redeemed': 0,
    'valid_until': None,
    'block_quota': False,
    'allow_ignore_quota': False,
    'price_mode': 'set',
    'value': '12.00',
    'item': 1,
    'variation': None,
    'quota': None,
    'tag': 'Foo',
    'comment': '',
    'subevent': None
}


@pytest.mark.django_db
def test_voucher_list(token_client, organizer, event, voucher, item, quota, subevent):
    res = dict(TEST_VOUCHER_RES)
    res['item'] = item.pk
    res['id'] = voucher.pk
    res['code'] = voucher.code

    resp = token_client.get('/api/v1/organizers/{}/events/{}/vouchers/'.format(organizer.slug, event.slug))
    assert resp.status_code == 200
    assert [res] == resp.data['results']

    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?code={}'.format(organizer.slug, event.slug, voucher.code)
    )
    assert [res] == resp.data['results']
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?code=ABC'.format(organizer.slug, event.slug)
    )
    assert [] == resp.data['results']

    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?max_usages=1'.format(organizer.slug, event.slug)
    )
    assert [res] == resp.data['results']
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?max_usages=2'.format(organizer.slug, event.slug)
    )
    assert [] == resp.data['results']

    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?redeemed=0'.format(organizer.slug, event.slug)
    )
    assert [res] == resp.data['results']
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?redeemed=1'.format(organizer.slug, event.slug)
    )
    assert [] == resp.data['results']

    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?block_quota=false'.format(organizer.slug, event.slug)
    )
    assert [res] == resp.data['results']
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?block_quota=true'.format(organizer.slug, event.slug)
    )
    assert [] == resp.data['results']

    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?allow_ignore_quota=false'.format(organizer.slug, event.slug)
    )
    assert [res] == resp.data['results']
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?allow_ignore_quota=true'.format(organizer.slug, event.slug)
    )
    assert [] == resp.data['results']

    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?price_mode=set'.format(organizer.slug, event.slug)
    )
    assert [res] == resp.data['results']
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?price_mode=percent'.format(organizer.slug, event.slug)
    )
    assert [] == resp.data['results']

    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?value=12.00'.format(organizer.slug, event.slug)
    )
    assert [res] == resp.data['results']
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?value=10.00'.format(organizer.slug, event.slug)
    )
    assert [] == resp.data['results']

    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?item={}'.format(organizer.slug, event.slug, item.pk)
    )
    assert [res] == resp.data['results']
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?item={}'.format(organizer.slug, event.slug, item.pk + 1)
    )
    assert [] == resp.data['results']

    var = item.variations.create(value='VIP')
    voucher.variation = var
    voucher.save()
    res['variation'] = var.pk
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?variation={}'.format(organizer.slug, event.slug, var.pk)
    )
    assert [res] == resp.data['results']
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?variation={}'.format(organizer.slug, event.slug, var.pk + 1)
    )
    assert [] == resp.data['results']

    voucher.variation = None
    voucher.item = None
    voucher.quota = quota
    voucher.save()
    res['variation'] = None
    res['item'] = None
    res['quota'] = quota.pk
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?quota={}'.format(organizer.slug, event.slug, quota.pk)
    )
    assert [res] == resp.data['results']
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?quota={}'.format(organizer.slug, event.slug, quota.pk + 1)
    )
    assert [] == resp.data['results']

    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?tag=Foo'.format(organizer.slug, event.slug)
    )
    assert [res] == resp.data['results']
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?tag=bar'.format(organizer.slug, event.slug)
    )
    assert [] == resp.data['results']

    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?active=true'.format(organizer.slug, event.slug)
    )
    assert [res] == resp.data['results']
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?active=false'.format(organizer.slug, event.slug)
    )
    assert [] == resp.data['results']

    voucher.redeemed = 1
    voucher.save()
    res['redeemed'] = 1
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?active=false'.format(organizer.slug, event.slug)
    )
    assert [res] == resp.data['results']

    voucher.redeemed = 0
    voucher.valid_until = (timezone.now() - datetime.timedelta(days=1)).replace(microsecond=0)
    voucher.save()
    res['valid_until'] = voucher.valid_until.isoformat().replace('+00:00', 'Z')
    res['redeemed'] = 0
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?active=false'.format(organizer.slug, event.slug)
    )
    assert [res] == resp.data['results']

    voucher.subevent = subevent
    voucher.save()
    res['subevent'] = subevent.pk

    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?subevent={}'.format(organizer.slug, event.slug, subevent.pk))
    assert [res] == resp.data['results']
    resp = token_client.get(
        '/api/v1/organizers/{}/events/{}/vouchers/?subevent={}'.format(organizer.slug, event.slug,
                                                                       subevent.pk + 1))
    assert [] == resp.data['results']


@pytest.mark.django_db
def test_voucher_detail(token_client, organizer, event, voucher, item):
    res = dict(TEST_VOUCHER_RES)
    res['item'] = item.pk
    res['id'] = voucher.pk
    res['code'] = voucher.code

    resp = token_client.get('/api/v1/organizers/{}/events/{}/vouchers/{}/'.format(organizer.slug, event.slug,
                                                                                  voucher.pk))
    assert resp.status_code == 200
    assert res == resp.data


def create_voucher(token_client, organizer, event, data, expected_failure=False):
    resp = token_client.post(
        '/api/v1/organizers/{}/events/{}/vouchers/'.format(organizer.slug, event.slug),
        data=data, format='json'
    )
    if expected_failure:
        assert resp.status_code == 400
    else:
        assert resp.status_code == 201
        return Voucher.objects.get(pk=resp.data['id'])


@pytest.mark.django_db
def test_voucher_require_item(token_client, organizer, event, item):
    create_voucher(
        token_client, organizer, event,
        data={},
        expected_failure=True
    )


@pytest.mark.django_db
def test_voucher_create_minimal(token_client, organizer, event, item):
    v = create_voucher(
        token_client, organizer, event,
        data={
            'item': item.pk,
        },
    )
    assert v.item == item


@pytest.mark.django_db
def test_voucher_create_full(token_client, organizer, event, item):
    v = create_voucher(
        token_client, organizer, event,
        data={
            'code': 'ABCDEFGHI',
            'max_usages': 1,
            'valid_until': None,
            'block_quota': False,
            'allow_ignore_quota': False,
            'price_mode': 'set',
            'value': '12.00',
            'item': item.pk,
            'variation': None,
            'quota': None,
            'tag': 'Foo',
            'comment': '',
            'subevent': None
        },
    )

    assert v.code == 'ABCDEFGHI'
    assert v.max_usages == 1
    assert v.redeemed == 0
    assert v.valid_until is None
    assert v.max_usages == 1
    assert v.block_quota is False
    assert v.price_mode == 'set'
    assert v.value == Decimal('12.00')
    assert v.item == item
    assert v.variation is None
    assert v.quota is None
    assert v.tag == 'Foo'
    assert v.subevent is None


@pytest.mark.django_db
def test_voucher_create_for_addon_item(token_client, organizer, event, item):
    c = event.categories.create(name="Foo", is_addon=True)
    item.category = c
    item.save()
    create_voucher(
        token_client, organizer, event,
        data={
            'item': item.pk,
        }, expected_failure=True
    )


@pytest.mark.django_db
def test_create_non_blocking_item_voucher(token_client, organizer, event, item):
    v = create_voucher(
        token_client, organizer, event,
        data={
            'item': item.pk,
        }
    )
    assert v.item == item
    assert v.variation is None
    assert v.quota is None


@pytest.mark.django_db
def test_create_non_blocking_variation_voucher(token_client, organizer, event, item):
    variation = item.variations.create(value="XL")
    v = create_voucher(
        token_client, organizer, event,
        data={
            'item': item.pk,
            'variation': variation.pk
        }
    )
    assert v.item == variation.item
    assert v.variation == variation
    assert v.quota is None


@pytest.mark.django_db
def test_create_non_blocking_quota_voucher(token_client, organizer, event, quota):
    v = create_voucher(
        token_client, organizer, event,
        data={
            'quota': quota.pk
        }
    )
    assert not v.block_quota
    assert v.quota == quota
    assert v.item is None


@pytest.mark.django_db
def test_create_blocking_item_voucher_quota_free(token_client, organizer, event, item, quota):
    v = create_voucher(
        token_client, organizer, event,
        data={
            'item': item.pk,
            'block_quota': True
        }
    )
    assert v.block_quota


@pytest.mark.django_db
def test_create_blocking_item_voucher_quota_full(token_client, organizer, event, item, quota):
    quota.size = 0
    quota.save()
    create_voucher(
        token_client, organizer, event,
        data={
            'item': item.pk,
            'block_quota': True
        },
        expected_failure=True
    )


@pytest.mark.django_db
def test_create_blocking_item_voucher_quota_full_invalid(token_client, organizer, event, item, quota):
    quota.size = 0
    quota.save()
    v = create_voucher(
        token_client, organizer, event,
        data={
            'item': item.pk,
            'block_quota': True,
            'valid_until': (now() - datetime.timedelta(days=3)).isoformat()
        }
    )
    assert v.block_quota
    assert not v.is_active()


@pytest.mark.django_db
def test_create_blocking_variation_voucher_quota_free(token_client, organizer, event, item, quota):
    variation = item.variations.create(value="XL")
    quota.variations.add(variation)
    v = create_voucher(
        token_client, organizer, event,
        data={
            'item': item.pk,
            'variation': variation.pk,
            'block_quota': True
        }
    )
    assert v.block_quota


@pytest.mark.django_db
def test_create_short_code(token_client, organizer, event, item):
    create_voucher(
        token_client, organizer, event,
        data={
            'code': 'ABC',
            'item': item.pk
        },
        expected_failure=True
    )


@pytest.mark.django_db
def test_create_blocking_variation_voucher_quota_full(token_client, organizer, event, item, quota):
    variation = item.variations.create(value="XL")
    quota.variations.add(variation)
    quota.size = 0
    quota.save()
    create_voucher(
        token_client, organizer, event,
        data={
            'item': item.pk,
            'variation': variation.pk,
            'block_quota': True
        },
        expected_failure=True
    )


@pytest.mark.django_db
def test_create_blocking_quota_voucher_quota_free(token_client, organizer, event, quota):
    create_voucher(
        token_client, organizer, event,
        data={
            'quota': quota.pk,
            'block_quota': True
        },
    )


@pytest.mark.django_db
def test_create_blocking_quota_voucher_quota_full(token_client, organizer, event, quota):
    quota.size = 0
    quota.save()
    create_voucher(
        token_client, organizer, event,
        data={
            'quota': quota.pk,
            'block_quota': True
        },
        expected_failure=True
    )


@pytest.mark.django_db
def test_create_duplicate_code(token_client, organizer, event, quota):
    v = event.vouchers.create(quota=quota)
    create_voucher(
        token_client, organizer, event,
        data={
            'quota': quota.pk,
            'code': v.code,
        },
        expected_failure=True
    )


@pytest.mark.django_db
def test_subevent_optional(token_client, organizer, event, item, subevent):
    v = create_voucher(
        token_client, organizer, event,
        data={
            'item': item.pk,
        },
    )
    assert v.subevent is None
    assert v.block_quota is False
    assert v.item == item


@pytest.mark.django_db
def test_subevent_required_for_blocking(token_client, organizer, event, item, subevent):
    create_voucher(
        token_client, organizer, event,
        data={
            'item': item.pk,
            'block_quota': True
        },
        expected_failure=True
    )


@pytest.mark.django_db
def test_subevent_blocking_quota_free(token_client, organizer, event, item, quota, subevent):
    se2 = event.subevents.create(name="Bar", date_from=now())
    quota.subevent = subevent
    quota.save()
    q2 = event.quotas.create(event=event, name='Tickets', size=0, subevent=se2)
    q2.items.add(item)

    v = create_voucher(
        token_client, organizer, event,
        data={
            'item': item.pk,
            'block_quota': True,
            'subevent': subevent.pk
        },
    )
    assert v.block_quota
    assert v.subevent == subevent


@pytest.mark.django_db
def test_subevent_blocking_quota_full(token_client, organizer, event, item, quota, subevent):
    se2 = event.subevents.create(name="Bar", date_from=now())
    quota.subevent = subevent
    quota.size = 0
    quota.save()
    q2 = event.quotas.create(event=event, name='Tickets', size=5, subevent=se2)
    q2.items.add(item)

    create_voucher(
        token_client, organizer, event,
        data={
            'item': item.pk,
            'block_quota': True,
            'subevent': subevent.pk
        },
        expected_failure=True
    )


def change_voucher(token_client, organizer, event, voucher, data, expected_failure=False):
    resp = token_client.patch(
        '/api/v1/organizers/{}/events/{}/vouchers/{}/'.format(organizer.slug, event.slug, voucher.pk),
        data=data, format='json'
    )
    if expected_failure:
        assert resp.status_code == 400
    else:
        assert resp.status_code == 200
    voucher.refresh_from_db()


@pytest.mark.django_db
def test_change_to_item_of_other_event(token_client, organizer, event, item):
    e2 = Event.objects.create(
        organizer=organizer,
        name='Dummy2',
        slug='dummy2',
        date_from=datetime.datetime(2017, 12, 27, 10, 0, 0, tzinfo=UTC),
        plugins='pretix.plugins.banktransfer,pretix.plugins.ticketoutputpdf'
    )
    ticket2 = e2.items.create(name='Late-bird ticket', default_price=23)
    v = event.vouchers.create(item=item)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'item': ticket2.pk
        },
        expected_failure=True
    )
    v.refresh_from_db()
    assert v.item == item


@pytest.mark.django_db
def test_change_non_blocking_voucher(token_client, organizer, event, item, quota):
    v = event.vouchers.create(item=item)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'quota': quota.pk,
            'item': None
        }
    )
    assert v.item is None
    assert v.quota == quota


@pytest.mark.django_db
def test_change_voucher_reduce_max_usages(token_client, organizer, event, item, quota):
    v = event.vouchers.create(item=item, max_usages=5, redeemed=3)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'max_usages': 2
        },
        expected_failure=True
    )
    assert v.max_usages == 5


@pytest.mark.django_db
def test_change_blocking_voucher_unchanged_quota_full(token_client, organizer, event, item, quota):
    quota.size = 0
    quota.save()
    v = event.vouchers.create(item=item, block_quota=True)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'comment': 'Foo'
        }
    )
    assert v.item == item
    assert v.block_quota
    assert v.comment == 'Foo'


@pytest.mark.django_db
def test_change_voucher_to_blocking_quota_full(token_client, organizer, event, item, quota):
    quota.size = 0
    quota.save()
    v = event.vouchers.create(item=item)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'block_quota': True
        },
        expected_failure=True
    )


@pytest.mark.django_db
def test_change_voucher_to_blocking_quota_free(token_client, organizer, event, item, quota):
    v = event.vouchers.create(item=item)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'block_quota': True
        },
    )
    assert v.block_quota


@pytest.mark.django_db
def test_change_voucher_validity_to_valid_quota_full(token_client, organizer, event, item, quota):
    quota.size = 0
    quota.save()
    v = event.vouchers.create(item=item, valid_until=now() - datetime.timedelta(days=3),
                              block_quota=True)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'valid_until': (now() + datetime.timedelta(days=3)).isoformat()
        },
        expected_failure=True
    )
    assert v.valid_until < now()


@pytest.mark.django_db
def test_change_voucher_validity_to_valid_quota_free(token_client, organizer, event, item, quota):
    v = event.vouchers.create(item=item, valid_until=now() - datetime.timedelta(days=3),
                              block_quota=True)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'valid_until': (now() + datetime.timedelta(days=3)).isoformat()
        },
    )
    assert v.valid_until > now()


@pytest.mark.django_db
def test_change_item_of_blocking_voucher_quota_free(token_client, organizer, event, item, quota):
    ticket2 = event.items.create(name='Late-bird ticket', default_price=23)
    quota.items.add(ticket2)
    v = event.vouchers.create(item=item, block_quota=True)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'item': ticket2.pk
        },
    )
    assert v.item == ticket2


@pytest.mark.django_db
def test_change_item_of_blocking_voucher_quota_full(token_client, organizer, event, item, quota):
    ticket2 = event.items.create(name='Late-bird ticket', default_price=23)
    quota2 = event.quotas.create(name='Late', size=0)
    quota2.items.add(ticket2)
    v = event.vouchers.create(item=item, block_quota=True)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'item': ticket2.pk
        },
        expected_failure=True
    )


@pytest.mark.django_db
def test_change_variation_of_blocking_voucher_quota_free(token_client, organizer, event):
    shirt = event.items.create(name='Shirt', default_price=23)
    vs = shirt.variations.create(value='S')
    vm = shirt.variations.create(value='M')
    qs = event.quotas.create(name='S', size=2)
    qs.variations.add(vs)
    qm = event.quotas.create(name='M', size=2)
    qm.variations.add(vm)
    v = event.vouchers.create(item=shirt, variation=vs, block_quota=True)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'variation': vm.pk
        },
    )
    assert v.variation == vm


@pytest.mark.django_db
def test_change_variation_of_blocking_voucher_without_quota_change(token_client, organizer, event):
    shirt = event.items.create(name='Shirt', default_price=23)
    vs = shirt.variations.create(value='S')
    vm = shirt.variations.create(value='M')
    q = event.quotas.create(name='S', size=0)
    q.variations.add(vs)
    q.variations.add(vm)
    v = event.vouchers.create(item=shirt, variation=vs, block_quota=True)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'variation': vm.pk
        }
    )
    assert v.variation == vm


@pytest.mark.django_db
def test_change_variation_of_blocking_voucher_quota_full(token_client, organizer, event):
    shirt = event.items.create(name='Shirt', default_price=23)
    vs = shirt.variations.create(value='S')
    vm = shirt.variations.create(value='M')
    qs = event.quotas.create(name='S', size=2)
    qs.variations.add(vs)
    qm = event.quotas.create(name='M', size=0)
    qm.variations.add(vm)
    v = event.vouchers.create(item=shirt, variation=vs, block_quota=True)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'variation': vm.pk
        },
        expected_failure=True
    )


@pytest.mark.django_db
def test_change_quota_of_blocking_voucher_quota_free(token_client, organizer, event):
    qs = event.quotas.create(name='S', size=2)
    qm = event.quotas.create(name='M', size=2)
    v = event.vouchers.create(quota=qs, block_quota=True)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'quota': qm.pk
        },
    )
    assert v.quota == qm


@pytest.mark.django_db
def test_change_quota_of_blocking_voucher_quota_full(token_client, organizer, event):
    qs = event.quotas.create(name='S', size=2)
    qm = event.quotas.create(name='M', size=0)
    v = event.vouchers.create(quota=qs, block_quota=True)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'quota': qm.pk
        },
        expected_failure=True
    )


@pytest.mark.django_db
def test_change_item_of_blocking_voucher_without_quota_change(token_client, organizer, event, item, quota):
    quota.size = 0
    quota.save()
    ticket2 = event.items.create(name='Standard Ticket', default_price=23)
    quota.items.add(ticket2)
    v = event.vouchers.create(item=item, block_quota=True)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'item': ticket2.pk
        },
    )
    assert v.item == ticket2


@pytest.mark.django_db
def test_change_code_to_duplicate(token_client, organizer, event, item, quota):
    v1 = event.vouchers.create(quota=quota)
    v2 = event.vouchers.create(quota=quota)
    change_voucher(
        token_client, organizer, event, v1,
        data={
            'code': v2.code
        },
        expected_failure=True
    )


@pytest.mark.django_db
def test_change_subevent_blocking_quota_free(token_client, organizer, event, item, quota, subevent):
    quota.subevent = subevent
    quota.save()
    se2 = event.subevents.create(name="Bar", date_from=now())
    q2 = event.quotas.create(event=event, name='Tickets', size=5, subevent=se2)
    q2.items.add(item)

    v = event.vouchers.create(item=item, block_quota=True, subevent=subevent)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'subevent': se2.pk
        },
    )
    assert v.subevent == se2


@pytest.mark.django_db
def test_change_subevent_blocking_quota_full(token_client, organizer, event, item, quota, subevent):
    quota.subevent = subevent
    quota.save()
    se2 = event.subevents.create(name="Bar", date_from=now())
    q2 = event.quotas.create(event=event, name='Tickets', size=0, subevent=se2)
    q2.items.add(item)

    v = event.vouchers.create(item=item, block_quota=True, subevent=subevent)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'subevent': se2.pk
        },
        expected_failure=True
    )


@pytest.mark.django_db
def test_delete_voucher(token_client, organizer, event, quota):
    v = event.vouchers.create(quota=quota)
    resp = token_client.delete(
        '/api/v1/organizers/{}/events/{}/vouchers/{}/'.format(organizer.slug, event.slug, v.pk),
    )
    assert resp.status_code == 204
    assert not event.vouchers.filter(pk=v.id).exists()


@pytest.mark.django_db
def test_delete_voucher_redeemed(token_client, organizer, event, quota):
    v = event.vouchers.create(quota=quota, redeemed=1)
    resp = token_client.delete(
        '/api/v1/organizers/{}/events/{}/vouchers/{}/'.format(organizer.slug, event.slug, v.pk),
    )
    assert resp.status_code == 403
    assert event.vouchers.filter(pk=v.id).exists()


@pytest.mark.django_db
def test_redeemed_is_not_writable(token_client, organizer, event, item):
    v = event.vouchers.create(item=item)
    change_voucher(
        token_client, organizer, event, v,
        data={
            'redeemed': 1,
        },
    )
    assert v.redeemed == 0