import uuid
from datetime import datetime
from sqlalchemy import String, DateTime, Boolean
from sqlalchemy.orm import Mapped, mapped_column, relationship
from sqlalchemy.dialects.postgresql import UUID
from app.database import Base


class Tenant(Base):
    __tablename__ = "tenants"

    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    name: Mapped[str] = mapped_column(String(200), nullable=False)
    slug: Mapped[str] = mapped_column(String(100), nullable=False, unique=True)
    is_active: Mapped[bool] = mapped_column(Boolean, nullable=False, default=True)
    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, nullable=False)

    # Relationships (lazy=noload — loaded explicitly when needed)
    users: Mapped[list] = relationship("User", back_populates="tenant", lazy="noload")
    orders: Mapped[list] = relationship("Order", back_populates="tenant", lazy="noload")
    products: Mapped[list] = relationship("Product", back_populates="tenant", lazy="noload")