class Event(Base):
    accounts: Mapped[List["AccountEventAssociation"]] = relationship(
        back_populates='events',
    )

class Account(Base):
    events: Mapped[List["AccountEventAssociation"]] = relationship(
        back_populates='accounts',
    )



class AccountEventAssociation(Base):
    __tablename__ = 'account_event_association'

    account_id: Mapped[int] = mapped_column(
        sa.ForeignKey('accounts.id'),
        primary_key=True
    )
    event_id: Mapped[int] = mapped_column(
        sa.ForeignKey('events.id'),
        primary_key=True
    )
    is_owner: Mapped[bool] = mapped_column(
        default=False,
        nullable=False
    )
    accounts: Mapped["Account"] = relationship('Account', foreign_keys=[account_id])
    events: Mapped["Event"] = relationship('Event', foreign_keys=[event_id])