"""
Modelos ORM para gestión de tenants
"""
from sqlalchemy import Column, Integer, String, DateTime, Boolean, Text, Enum as SQLEnum
from sqlalchemy.sql import func
from sqlalchemy.orm import Mapped, mapped_column, relationship
from datetime import datetime
from typing import List, TYPE_CHECKING
from core.database import Base
import enum

if TYPE_CHECKING:
    from api.v1.modules.a76.user_tenant.models import UserTenant


class TenantType(enum.Enum):
    """Tipo de tenant según tamaño y necesidades"""
    SHARED = "shared"  # BD compartida
    DEDICATED = "dedicated"  # BD dedicada


class Tenant(Base):
    """
    Modelo de Tenant - Cliente/Organización en el sistema
    Cada tenant puede tener BD compartida o dedicada
    """
    __tablename__ = "tenants"
    __table_args__ = {"schema": "a76"}
    
    id = Column(Integer, primary_key=True, index=True)
    name = Column(String(255), nullable=False, index=True)
    slug = Column(String(100), unique=True, nullable=False, index=True)
    
    # Tipo de tenant (compartido o dedicado)
    type = Column(SQLEnum(TenantType), default=TenantType.SHARED, nullable=False)
    
    # Keycloak realm asociado
    keycloak_realm = Column(String(255), nullable=False)
    
    # Configuración de BD dedicada (JSON string o NULL si usa BD compartida)
    db_config = Column(Text, nullable=True)  # JSON: {host, port, name, user, password}
    
    # Información de contacto
    contact_name = Column(String(255))
    contact_email = Column(String(255))
    contact_phone = Column(String(50))
    
    # Estado
    is_active = Column(Boolean, default=True, nullable=False)
    
    # Timestamps
    created_at: Mapped[datetime] = mapped_column(DateTime, nullable=False, default=func.now())
    updated_at: Mapped[datetime] = mapped_column(DateTime, nullable=False, default=func.now(), onupdate=func.now())
    deleted_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
    
    # Relación con UserTenant
    user_relations: Mapped[List["UserTenant"]] = relationship("UserTenant", back_populates="tenant")
    
    def __repr__(self):
        return f"<Tenant(id={self.id}, name={self.name}, type={self.type.value})>"