整合合同费用并移除旧财务合同

backend/app/models/contract_fee.py

@@ -2,10 +2,10 @@ from __future__ import annotations
 from typing import Optional
 
 import uuid
-from datetime import datetime
+from datetime import date, datetime
 from decimal import Decimal
 
-from sqlalchemy import DateTime, ForeignKey, Integer, Numeric, UniqueConstraint, func
+from sqlalchemy import Date, DateTime, ForeignKey, Integer, Numeric, String, Text, UniqueConstraint, func
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import Mapped, mapped_column
 
@@ -21,11 +21,15 @@ class ContractFee(Base):
     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_no: Mapped[Optional[str]] = mapped_column(String(100), nullable=True)
+    signed_date: Mapped[Optional[date]] = mapped_column(Date, nullable=True)
     contract_amount: Mapped[Decimal] = mapped_column(Numeric(12, 2), nullable=False)
+    currency: Mapped[str] = mapped_column(String(10), nullable=False, default="CNY")
+    remark: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
     contract_cases: Mapped[int] = mapped_column(Integer, nullable=False)
     actual_cases: Mapped[Optional[int]] = 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)
+    settlement_amount: Mapped[Optional[Decimal]] = mapped_column(Numeric(12, 2), nullable=True)
+    final_payment_amount: Mapped[Optional[Decimal]] = 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()