from dataclasses import dataclass
from uuid import uuid4

from domain.framework.entity import Entity
from domain.marketplace.domain_event import (
    ClassifiedAdCreated,
    ClassifiedAdSentForReview,
    DomainEvent,
)


@dataclass(frozen=True)
class TestEntity(Entity):
    __test__ = False
    _events: tuple[DomainEvent, ...] = ()


def test_entity_creation():
    entity = TestEntity()
    assert entity.get_changes() == ()


def test_raise_event_returns_new_instance_with_event():
    entity = TestEntity()
    event = ClassifiedAdCreated(id=uuid4(), owner_id=uuid4())

    new_entity = entity.raise_event(event)

    assert new_entity.get_changes() == (event,)


def test_raise_event_does_not_mutate_original():
    entity = TestEntity()
    event = ClassifiedAdCreated(id=uuid4(), owner_id=uuid4())

    entity.raise_event(event)

    assert entity.get_changes() == ()


def test_multiple_events_accumulate():
    entity = TestEntity()
    event1 = ClassifiedAdCreated(id=uuid4(), owner_id=uuid4())
    event2 = ClassifiedAdSentForReview(id=uuid4())

    entity = entity.raise_event(event1)
    entity = entity.raise_event(event2)

    assert entity.get_changes() == (event1, event2)


def test_clear_changes_returns_instance_with_empty_events():
    entity = TestEntity()
    event = ClassifiedAdCreated(id=uuid4(), owner_id=uuid4())
    entity = entity.raise_event(event)

    cleared = entity.clear_changes()

    assert cleared.get_changes() == ()


def test_clear_changes_does_not_mutate_original():
    entity = TestEntity()
    event = ClassifiedAdCreated(id=uuid4(), owner_id=uuid4())
    entity = entity.raise_event(event)

    entity.clear_changes()

    assert entity.get_changes() == (event,)


def test_get_changes_returns_tuple():
    entity = TestEntity()
    event = ClassifiedAdCreated(id=uuid4(), owner_id=uuid4())
    entity = entity.raise_event(event)

    changes = entity.get_changes()

    assert isinstance(changes, tuple)