"""Esquemas del catálogo de conceptos de facturación."""

from datetime import datetime
from decimal import Decimal

from pydantic import BaseModel, ConfigDict, Field

from ..catalogs.dto import ProductServiceResponse, TaxObjectResponse, UnitOfMeasureResponse


class ConceptBase(BaseModel):
    code: str = Field(..., min_length=1, max_length=40, description="Clave interna del concepto")
    description: str = Field(..., min_length=1, max_length=500)
    product_service_id: int = Field(..., description="Clave ProdServ del SAT (1:1 por empresa)")
    unit_of_measure_id: int | None = None
    tax_object_id: int | None = None
    unit_price: Decimal | None = Field(None, ge=0, max_digits=14, decimal_places=2)
    currency: str = Field("MXN", min_length=3, max_length=3)
    is_active: bool = True
    notes: str | None = None


class ConceptCreate(ConceptBase):
    pass


class ConceptUpdate(BaseModel):
    """Actualización parcial: solo se tocan los campos enviados."""

    code: str | None = Field(None, min_length=1, max_length=40)
    description: str | None = Field(None, min_length=1, max_length=500)
    product_service_id: int | None = None
    unit_of_measure_id: int | None = None
    tax_object_id: int | None = None
    unit_price: Decimal | None = Field(None, ge=0, max_digits=14, decimal_places=2)
    currency: str | None = Field(None, min_length=3, max_length=3)
    is_active: bool | None = None
    notes: str | None = None


class ConceptResponse(ConceptBase):
    """Incluye los objetos del catálogo del SAT ya resueltos, para evitar N+1 en la UI."""

    model_config = ConfigDict(from_attributes=True)

    id: int
    tenant_id: int
    company_id: int
    product_service: ProductServiceResponse | None = None
    unit_of_measure: UnitOfMeasureResponse | None = None
    tax_object: TaxObjectResponse | None = None
    created_by: str | None = None
    updated_by: str | None = None
    created_at: datetime
    updated_at: datetime