<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;

class Budget extends Model
{
    use HasFactory;

    protected $fillable = [
        'service_id',
        'commune_id',
        'annee',
        'type_budget',
        'statut',
    ];

    public function service(): BelongsTo
    {
        return $this->belongsTo(Service::class);
    }

    public function commune(): BelongsTo
    {
        return $this->belongsTo(Commune::class);
    }

    public function lignes(): HasMany
    {
        return $this->hasMany(LigneBudget::class);
    }

    /**
     * Calcul du total proposé selon le type de dépense (optionnel: 'investissement' ou 'fonctionnement').
     */
    public function totalPropose(?string $typeDepense = null): float
    {
        $query = $this->lignes();
        if ($typeDepense) {
            $query->where('type_depense', $typeDepense);
        }
        return $query->sum('montant_propose') ?? 0;
    }

    /**
     * Calcul du total arbitré (validé) selon le type de dépense.
     */
    public function totalArbitre(?string $typeDepense = null): float
    {
        $query = $this->lignes();
        if ($typeDepense) {
            $query->where('type_depense', $typeDepense);
        }
        return $query->sum('montant_arbitre') ?? 0;
    }
}