import uuid

from sqlalchemy import String, ForeignKey
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.core.database import Base


class TransactionCluster(Base):
    __tablename__ = "transaction_clusters"

    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)
    primary_tx_id: Mapped[uuid.UUID | None] = mapped_column(UUID(as_uuid=True), nullable=True)
    match_reason: Mapped[str] = mapped_column(String(512), default="")

    transactions = relationship(
        "TransactionRecord",
        back_populates="cluster",
        foreign_keys="TransactionRecord.cluster_id",
    )