费用管理内容优化-初步

backend/app/models/contract_fee.py

@@ -0,0 +1,29 @@
+import uuid
+from datetime import datetime
+from decimal import Decimal
+
+from sqlalchemy import DateTime, ForeignKey, Integer, Numeric, UniqueConstraint, func
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.db.base_class import Base
+
+
+class ContractFee(Base):
+    __tablename__ = "contract_fees"
+    __table_args__ = (
+        UniqueConstraint("project_id", "center_id", name="uq_contract_fees_project_center"),
+    )
+
+    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    project_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("studies.id"), index=True, nullable=False)
+    center_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("sites.id"), index=True, nullable=False)
+    contract_amount: Mapped[Decimal] = mapped_column(Numeric(12, 2), nullable=False)
+    contract_cases: Mapped[int] = mapped_column(Integer, nullable=False)
+    actual_cases: Mapped[int | None] = mapped_column(Integer, nullable=True)
+    settlement_amount: Mapped[Decimal | None] = mapped_column(Numeric(12, 2), nullable=True)
+    final_payment_amount: Mapped[Decimal | None] = mapped_column(Numeric(12, 2), nullable=True)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, server_default=func.now())
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), nullable=False, server_default=func.now(), onupdate=func.now()
+    )