saas_backend/app/models/auth/tenant_model.py

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

class Tenant(Base):
    __tablename__ = "tenants"

    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4, index=True)
    tenant_name = Column(String, unique=True, nullable=False, index=True)
    tenant_domain = Column(String, unique=True, nullable=False, index=True)
    tenant_logo_url = Column(String, nullable=True)
    is_active = Column(Boolean, default=True, nullable=False)
    plan_id = Column(UUID(as_uuid=True), ForeignKey("subscription_plans.id"), nullable=True, index=True)
    start_date = Column(Date, nullable=True)
    end_date = Column(Date, nullable=True)
    status = Column(String, nullable=False, default="ACTIVE", index=True)
    cancelled_at = Column(DateTime(timezone=True), nullable=True)
    billing_email = Column(String(255), nullable=True)

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

    deleted_at = Column(DateTime(timezone=True), nullable=True)
    deleted_by_id = Column(UUID(as_uuid=True), nullable=True)

    users = relationship("User", back_populates="tenant", cascade="all, delete-orphan")
    roles = relationship("Role", back_populates="tenant", cascade="all, delete-orphan")
    tenant_modules = relationship("TenantModule", back_populates="tenant", cascade="all, delete-orphan")
    plan = relationship("SubscriptionPlan", back_populates="tenants")

    @property
    def tenant_id(self):
        return self.id

    @property
    def is_deleted(self) -> bool:
        return self.deleted_at is not None

    def __repr__(self):
        return f"<Tenant {self.tenant_name}>"