feat(db): all domain models, initial Alembic migration (32 tables), seed script (8 districts, 89 regions, roles)

backend/app/models/artifact.py

@@ -0,0 +1,24 @@
+"""Модели артефактов (файлов)."""
+from datetime import datetime
+
+from sqlalchemy import BigInteger, DateTime, ForeignKey, String, func
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.db.session import Base
+
+
+class Artifact(Base):
+    __tablename__ = "artifacts"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    title: Mapped[str | None] = mapped_column(String(300))
+    file_key: Mapped[str] = mapped_column(String(500))
+    file_name: Mapped[str] = mapped_column(String(300))
+    mime_type: Mapped[str | None] = mapped_column(String(100))
+    size_bytes: Mapped[int | None] = mapped_column(BigInteger)
+    region_id: Mapped[int | None] = mapped_column(ForeignKey("regions.id"))
+    goal_id: Mapped[int | None] = mapped_column(ForeignKey("goals.id"))
+    task_id: Mapped[int | None] = mapped_column(ForeignKey("tasks.id"))
+    uploaded_by: Mapped[int | None] = mapped_column(ForeignKey("users.id"))
+    deleted_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())