feat: deal status history and default created_at in db

models/__init__.py

@@ -4,6 +4,6 @@ from .base import BaseModel as BaseModel
 from .board import Board as Board
 from .deal import Deal as Deal
 from .project import Project as Project
-from .status import Status as Status
+from .status import Status as Status, CardStatusHistory as CardStatusHistory
 
 configure_mappers()

models/deal.py

@@ -7,7 +7,7 @@ from models.base import BaseModel
 from models.mixins import SoftDeleteMixin, CreatedAtMixin, IdMixin
 
 if TYPE_CHECKING:
-    from models import Status, Board
+    from models import Status, Board, CardStatusHistory
 
 
 class Deal(BaseModel, IdMixin, SoftDeleteMixin, CreatedAtMixin):
@@ -27,3 +27,9 @@ class Deal(BaseModel, IdMixin, SoftDeleteMixin, CreatedAtMixin):
         ForeignKey("boards.id"), nullable=True, server_default="1"
     )
     board: Mapped["Board"] = relationship(back_populates="deals")
+
+    status_history: Mapped[list["CardStatusHistory"]] = relationship(
+        back_populates="deal",
+        cascade="all, delete-orphan",
+        lazy="noload",
+    )

models/mixins.py

@@ -1,4 +1,4 @@
-from datetime import datetime
+from datetime import datetime, timezone
 
 from sqlalchemy import DateTime
 from sqlalchemy.orm import Mapped, mapped_column
@@ -17,5 +17,7 @@ class SoftDeleteMixin:
 
 class CreatedAtMixin:
     created_at: Mapped[datetime] = mapped_column(
-        DateTime(timezone=True), nullable=False
+        DateTime(timezone=True),
+        default=lambda: datetime.now(timezone.utc),
+        nullable=False,
     )

models/status.py

@@ -4,10 +4,10 @@ from sqlalchemy import ForeignKey
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 
 from models.base import BaseModel
-from models.mixins import SoftDeleteMixin, IdMixin
+from models.mixins import SoftDeleteMixin, IdMixin, CreatedAtMixin
 
 if TYPE_CHECKING:
-    from models import Board
+    from models import Board, Deal
 
 
 class Status(BaseModel, IdMixin, SoftDeleteMixin):
@@ -18,3 +18,30 @@ class Status(BaseModel, IdMixin, SoftDeleteMixin):
 
     board_id: Mapped[int] = mapped_column(ForeignKey("boards.id"), nullable=False)
     board: Mapped["Board"] = relationship(back_populates="statuses")
+
+
+class CardStatusHistory(BaseModel, IdMixin, CreatedAtMixin):
+    __tablename__ = "status_history"
+
+    deal_id: Mapped[int] = mapped_column(ForeignKey("deals.id"), nullable=False)
+    deal: Mapped["Deal"] = relationship(back_populates="status_history")
+
+    from_status_id: Mapped[int] = mapped_column(
+        ForeignKey("statuses.id"),
+        nullable=False,
+        comment="Старый статус",
+    )
+    from_status: Mapped[Status] = relationship(
+        foreign_keys=[from_status_id],
+        lazy="joined",
+    )
+
+    to_status_id: Mapped[int] = mapped_column(
+        ForeignKey("statuses.id"),
+        nullable=False,
+        comment="Новый статус",
+    )
+    to_status: Mapped[Status] = relationship(
+        foreign_keys=[to_status_id],
+        lazy="joined",
+    )