"""
Modelo de relación entre usuarios (Keycloak) y tenants
"""

from sqlalchemy import (
    Integer,
    String,
    DateTime,
    Boolean,
    UniqueConstraint,
    ForeignKeyConstraint,
)
from sqlalchemy.sql import func
from sqlalchemy.orm import Mapped, mapped_column, relationship
from datetime import datetime
from typing import Optional, TYPE_CHECKING
from core.database import Base

if TYPE_CHECKING:
    from api.v1.modules.a76.tenants.models import Tenant


class UserTenant(Base):
    """
    Relación muchos-a-muchos entre usuarios de Keycloak y tenants

    Un usuario puede pertenecer a múltiples tenants
    Un tenant puede tener múltiples usuarios
    """

    __tablename__ = "user_tenants"
    __table_args__ = (
        ForeignKeyConstraint(["company_id"], ["a76.company.id"]),
        ForeignKeyConstraint(["tenant_id"], ["a76.tenants.id"]),
        UniqueConstraint(
            "keycloak_user_id", "tenant_id", "company_id", name="uq_user_tenant"
        ),
        {"schema": "a76", "extend_existing": True},
    )

    # Primary Key
    id: Mapped[int] = mapped_column(primary_key=True, index=True)

    # ID del usuario en Keycloak (UUID string)
    keycloak_user_id: Mapped[str] = mapped_column(
        String(255), nullable=False, index=True
    )

    # ID del tenant
    tenant_id: Mapped[int] = mapped_column(Integer, nullable=False, index=True)
    company_id: Mapped[int] = mapped_column(Integer, nullable=False, index=True)

    # Estado de la relación
    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)

    # Información adicional - Rol del usuario en este tenant (opcional)
    role: Mapped[Optional[str]] = mapped_column(String(50), nullable=True)

    # Timestamps
    created_at: Mapped[datetime] = mapped_column(
        DateTime, nullable=False, server_default=func.now()
    )
    updated_at: Mapped[datetime] = mapped_column(
        DateTime, nullable=False, server_default=func.now(), onupdate=func.now()
    )
    deleted_at: Mapped[Optional[datetime]] = mapped_column(DateTime, nullable=True)

    # Relación con Tenant
    tenant: Mapped["Tenant"] = relationship("Tenant", back_populates="user_relations")