horux-strategy-platform/backend/app/Models/Balanza.php

<?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;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;

class Balanza extends Model
{
    use HasFactory;

    protected $fillable = [
        'cliente_id',
        'periodo_inicio',
        'periodo_fin',
        'sistema_origen',
        'archivo_original',
        'status',
        'error_mensaje',
    ];

    protected function casts(): array
    {
        return [
            'periodo_inicio' => 'date',
            'periodo_fin' => 'date',
        ];
    }

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

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

    public function reportes(): BelongsToMany
    {
        return $this->belongsToMany(Reporte::class, 'reporte_balanza');
    }

    public function cuentasActivas(): HasMany
    {
        return $this->hasMany(Cuenta::class)->where('excluida', false);
    }

    public function cuentasPadre(): HasMany
    {
        return $this->hasMany(Cuenta::class)->where('es_cuenta_padre', true);
    }
}