from pydantic import BaseModel, Field, EmailStr, validator, field_validator
from typing import List, Optional, Dict, ClassVar, Any
from datetime import date, datetime
from enum import Enum, IntEnum

class LigneFacture(BaseModel):
    """Ligne de facture"""

    article_code: str
    quantite: float
    remise_pourcentage: Optional[float] = 0.0

    @field_validator("article_code", mode="before")
    def strip_insecables(cls, v):
        return v.replace("\xa0", "").strip()


class FactureCreateRequest(BaseModel):
    """Création d'une facture"""

    client_id: str
    date_facture: Optional[date] = None
    date_livraison: Optional[date] = None
    lignes: List[LigneFacture]
    reference: Optional[str] = None

    class Config:
        json_schema_extra = {
            "example": {
                "client_id": "CLI000001",
                "date_facture": "2024-01-15",
                "reference": "FA-EXT-001",
                "lignes": [
                    {
                        "article_code": "ART001",
                        "quantite": 10.0,
                        "prix_unitaire_ht": 50.0,
                        "remise_pourcentage": 5.0,
                    }
                ],
            }
        }


class FactureUpdateRequest(BaseModel):
    """Modification d'une facture existante"""

    date_facture: Optional[date] = None
    date_livraison: Optional[date] = None
    lignes: Optional[List[LigneFacture]] = None
    statut: Optional[int] = Field(None, ge=0, le=6)
    reference: Optional[str] = None

    class Config:
        json_schema_extra = {
            "example": {
                "date_facture": "2024-01-15",
                "date_livraison": "2024-01-15",
                "lignes": [
                    {
                        "article_code": "ART001",
                        "quantite": 15.0,
                        "prix_unitaire_ht": 45.0,
                    }
                ],
                "statut": 2,
            }
        }