"""Utilitaires pour la numérotation des décisions du groupe."""
from sqlalchemy import func, select
from sqlalchemy.ext.asyncio import AsyncSession

from app.core.decision_types import PREFIXES_DECISION
from app.models.proposition import Proposition


async def prochain_numero_decision(groupe_id, type_decision: str, annee: int, db: AsyncSession) -> str:
    prefixe = PREFIXES_DECISION.get(type_decision, "RES")
    result = await db.execute(
        select(func.count(Proposition.id)).where(
            Proposition.groupe_id == groupe_id,
            Proposition.numero_resolution.isnot(None),
            Proposition.numero_resolution.like(f"{prefixe}-{annee}-%"),
        )
    )
    count = result.scalar() or 0
    return f"{prefixe}-{annee}-{count + 1:03d}"