# backend/app/models/intrant.py
from datetime import datetime, timezone
from typing import List, Optional
from sqlalchemy import Column
from sqlalchemy import JSON as SA_JSON
from sqlmodel import Field, SQLModel


class AchatIntrant(SQLModel, table=True):
    __tablename__ = "achat_intrant"

    id: Optional[int] = Field(default=None, primary_key=True)
    categorie: str  # terreau | engrais | traitement | autre
    nom: str
    marque: Optional[str] = None
    boutique_nom: Optional[str] = None
    boutique_url: Optional[str] = None
    prix: Optional[float] = None
    poids: Optional[str] = None          # "20L", "1kg", "500ml"
    date_achat: Optional[str] = None     # ISO date
    dluo: Optional[str] = None           # ISO date
    notes: Optional[str] = None
    jardin_id: Optional[int] = Field(default=None, foreign_key="garden.id")
    plantation_id: Optional[int] = Field(default=None, foreign_key="planting.id")
    tache_id: Optional[int] = Field(default=None, foreign_key="task.id")
    created_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))


class Ingredient(SQLModel):
    """Modèle pour un ingrédient de fabrication (non persisté seul)."""
    nom: str
    quantite: str  # "1kg", "10L"


class Fabrication(SQLModel, table=True):
    __tablename__ = "fabrication"

    id: Optional[int] = Field(default=None, primary_key=True)
    type: str  # compost | decoction | purin | autre
    nom: str
    ingredients: Optional[List[dict]] = Field(
        default=None,
        sa_column=Column("ingredients", SA_JSON, nullable=True),
    )
    date_debut: Optional[str] = None      # ISO date
    date_fin_prevue: Optional[str] = None # ISO date
    statut: str = "en_cours"             # en_cours | pret | utilise | echec
    quantite_produite: Optional[str] = None  # "8L", "50kg"
    notes: Optional[str] = None
    jardin_id: Optional[int] = Field(default=None, foreign_key="garden.id")
    plantation_id: Optional[int] = Field(default=None, foreign_key="planting.id")
    tache_id: Optional[int] = Field(default=None, foreign_key="task.id")
    created_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))


class FabricationStatutUpdate(SQLModel):
    statut: str