first commit

backend/app/models/transaction.py

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+import uuid
+from datetime import datetime
+import enum
+
+from sqlalchemy import (
+    String, Numeric, Float, Boolean, DateTime, Text,
+    ForeignKey, Enum as SAEnum, func,
+)
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from app.core.database import Base
+from app.models.evidence_image import SourceApp
+
+
+class Direction(str, enum.Enum):
+    in_ = "in"
+    out = "out"
+
+
+class TransactionRecord(Base):
+    __tablename__ = "transaction_records"
+
+    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    case_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("cases.id"), index=True)
+    evidence_image_id: Mapped[uuid.UUID | None] = mapped_column(UUID(as_uuid=True), ForeignKey("evidence_images.id"), nullable=True)
+    cluster_id: Mapped[uuid.UUID | None] = mapped_column(UUID(as_uuid=True), ForeignKey("transaction_clusters.id"), nullable=True)
+    source_app: Mapped[SourceApp] = mapped_column(SAEnum(SourceApp), default=SourceApp.other)
+    trade_time: Mapped[datetime] = mapped_column(DateTime(timezone=True), index=True)
+    amount: Mapped[float] = mapped_column(Numeric(14, 2), default=0)
+    direction: Mapped[Direction] = mapped_column(SAEnum(Direction))
+    counterparty_name: Mapped[str] = mapped_column(String(256), default="")
+    counterparty_account: Mapped[str] = mapped_column(String(256), default="")
+    self_account_tail_no: Mapped[str] = mapped_column(String(32), default="")
+    order_no: Mapped[str] = mapped_column(String(128), default="", index=True)
+    remark: Mapped[str] = mapped_column(Text, default="")
+    confidence: Mapped[float] = mapped_column(Float, default=0.0)
+    is_duplicate: Mapped[bool] = mapped_column(Boolean, default=False)
+    is_transit: Mapped[bool] = mapped_column(Boolean, default=False)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())
+
+    case = relationship("Case", back_populates="transactions")
+    cluster = relationship("TransactionCluster", back_populates="transactions", foreign_keys=[cluster_id])