import uuid
from datetime import datetime, timezone

from sqlalchemy import DateTime, String, func
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.db.base import Base


class Tenant(Base):
    __tablename__ = "tenants"

    id: Mapped[uuid.UUID] = mapped_column(
        primary_key=True, default=uuid.uuid4, index=True
    )
    name: Mapped[str] = mapped_column(String(255), nullable=False)
    slug: Mapped[str] = mapped_column(String(100), unique=True, nullable=False, index=True)

    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        server_default=func.now(),
        nullable=False,
    )
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        server_default=func.now(),
        onupdate=lambda: datetime.now(timezone.utc),
        nullable=False,
    )

    # Relationships
    user_tenants: Mapped[list["UserTenant"]] = relationship(  # noqa: F821
        "UserTenant", back_populates="tenant", cascade="all, delete-orphan"
    )
    beds: Mapped[list["Bed"]] = relationship(  # noqa: F821
        "Bed", back_populates="tenant", cascade="all, delete-orphan"
    )
    plants: Mapped[list["Plant"]] = relationship(  # noqa: F821
        "Plant", back_populates="tenant"
    )