feat: add DomainEvent base class and 5 domain event types

domain/marketplace/__init__.py

@@ -3,6 +3,12 @@ from .classified_ad_id import ClassifiedAdId as ClassifiedAdId
 from .classified_ad_state import ClassifiedAdState as ClassifiedAdState
 from .classified_ad_text import ClassifiedAdText as ClassifiedAdText
 from .classified_ad_title import ClassifiedAdTitle as ClassifiedAdTitle
+from .domain_event import ClassifiedAdCreated as ClassifiedAdCreated
+from .domain_event import ClassifiedAdPriceUpdated as ClassifiedAdPriceUpdated
+from .domain_event import ClassifiedAdSentForReview as ClassifiedAdSentForReview
+from .domain_event import ClassifiedAdTextUpdated as ClassifiedAdTextUpdated
+from .domain_event import ClassifiedAdTitleChanged as ClassifiedAdTitleChanged
+from .domain_event import DomainEvent as DomainEvent
 from .invalid_entity_state_exception import (
     InvalidEntityStateException as InvalidEntityStateException,
 )

domain/marketplace/domain_event.py

@@ -0,0 +1,36 @@
+from dataclasses import dataclass
+from decimal import Decimal
+from uuid import UUID
+
+
+class DomainEvent:
+    pass
+
+
+@dataclass(frozen=True)
+class ClassifiedAdCreated(DomainEvent):
+    id: UUID
+    owner_id: UUID
+
+
+@dataclass(frozen=True)
+class ClassifiedAdTitleChanged(DomainEvent):
+    id: UUID
+    title: str
+
+
+@dataclass(frozen=True)
+class ClassifiedAdTextUpdated(DomainEvent):
+    id: UUID
+    ad_text: str
+
+
+@dataclass(frozen=True)
+class ClassifiedAdPriceUpdated(DomainEvent):
+    id: UUID
+    price: Decimal
+
+
+@dataclass(frozen=True)
+class ClassifiedAdSentForReview(DomainEvent):
+    id: UUID