from datetime import datetime

from sqlalchemy import Integer, Column, DateTime, String

from util.database import Base


class Relation(Base):
    """对应 Excel Sheet：关联关系表。"""

    __tablename__ = "wl_relation"

    id = Column(Integer, primary_key=True, autoincrement=True)
    source_id = Column(String(50))
    destination_id = Column(Integer)
    relation_type = Column(String(50))
    created_at = Column(DateTime)
    updated_at = Column(DateTime)
    is_deleted = Column(default=False, nullable=False)