"""
Modello Tenant – ogni organizzazione cliente del SaaS.
"""

import uuid
from datetime import datetime

from sqlalchemy import Boolean, DateTime, Index, Integer, String, func
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column, relationship

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
    )
    slug: Mapped[str] = mapped_column(String(63), nullable=False, unique=True)
    name: Mapped[str] = mapped_column(String(255), nullable=False)
    plan: Mapped[str] = mapped_column(String(50), nullable=False, default="starter")
    is_active: Mapped[bool] = mapped_column(Boolean, nullable=False, default=True)
    max_mailboxes: Mapped[int] = mapped_column(Integer, nullable=False, default=5)
    max_users: Mapped[int] = mapped_column(Integer, nullable=False, default=10)
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), nullable=False, server_default=func.now()
    )
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), nullable=False, server_default=func.now(), onupdate=func.now()
    )

    # Relazioni
    users: Mapped[list["User"]] = relationship(  # noqa: F821
        "User", back_populates="tenant", cascade="all, delete-orphan"
    )
    mailboxes: Mapped[list["Mailbox"]] = relationship(  # noqa: F821
        "Mailbox", back_populates="tenant", cascade="all, delete-orphan"
    )

    __table_args__ = (
        Index("idx_tenants_slug", "slug"),
    )

    def __repr__(self) -> str:
        return f"<Tenant {self.slug!r} ({self.plan})>"