<?php

namespace App\Models;

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

class Contrat extends Model
{
    use HasFactory;

    protected $fillable = [
        'titre',
        'description',
        'fournisseur_id',
        'service_id',
        'date_debut',
        'date_echeance',
        'statut',
        'montant',
        'preavis_jours',
    ];

    protected $casts = [
        'date_debut'    => 'date',
        'date_echeance' => 'date',
        'montant'       => 'decimal:2',
    ];

    const STATUTS_LABELS = [
        'actif'        => 'Actif',
        'a_renouveler' => 'À renouveler',
        'expire'       => 'Expiré',
        'resilie'      => 'Résilié',
    ];

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

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

    public function piecesJointes(): HasMany
    {
        return $this->hasMany(PieceJointe::class)->orderByDesc('created_at');
    }

    // Un contrat est considéré "proche d'expiration" si l'échéance est dans moins de 30 jours (ou selon son préavis)
    public function getEstProcheEcheanceAttribute(): bool
    {
        if (!$this->date_echeance || in_array($this->statut, ['resilie', 'expire'])) {
            return false;
        }

        $joursAvantAlerte = $this->preavis_jours > 0 ? $this->preavis_jours + 15 : 30;
        
        return Carbon::now()->diffInDays($this->date_echeance, false) <= $joursAvantAlerte;
    }

    public function getEstEnRetardAttribute(): bool
    {
        if (!$this->date_echeance || $this->statut === 'resilie') {
            return false;
        }

        return Carbon::now()->isAfter($this->date_echeance);
    }
}