import uuid
from sqlalchemy import Column, DateTime, func, ForeignKey, UniqueConstraint
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import relationship
from app.config.database import Base

class PlanAccess(Base):
    __tablename__ = "plan_accesses"

    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4, index=True)
    plan_id = Column(UUID(as_uuid=True), ForeignKey("subscription_plans.id", ondelete="CASCADE"), nullable=False, index=True)
    access_id = Column(UUID(as_uuid=True), ForeignKey("accesses.id", ondelete="CASCADE"), nullable=False, index=True)

    created_at = Column(DateTime(timezone=True), server_default=func.now())

    plan = relationship("SubscriptionPlan", back_populates="plan_accesses")
    access = relationship("Access")

    __table_args__ = (
        UniqueConstraint('plan_id', 'access_id', name='uq_plan_access'),
    )

    def __repr__(self):
        return f"<PlanAccess plan={self.plan_id} access={self.access_id}>"