<?php namespace App\Models;
/**
 * @copyright (c) 2025 Notsoweb Software (https://notsoweb.com) - All Rights Reserved
 */


use Illuminate\Database\Eloquent\Model;

/**
 * Descripción
 *
 * @author Moisés Cortés C. <moises.cortes@notsoweb.com>
 *
 * @version 1.0.0
 */
class SaleDetail extends Model
{
    protected $fillable = [
        'sale_id',
        'inventory_id',
        'product_name',
        'quantity',
        'unit_price',
        'subtotal',
        'discount_percentage',
        'discount_amount',
    ];

    protected $casts = [
        'unit_price' => 'decimal:2',
        'subtotal' => 'decimal:2',
        'discount_percentage' => 'decimal:2',
        'discount_amount' => 'decimal:2',
    ];

    public function sale()
    {
        return $this->belongsTo(Sale::class);
    }

    public function inventory()
    {
        return $this->belongsTo(Inventory::class);
    }

    public function serials()
    {
        return $this->hasMany(InventorySerial::class, 'sale_detail_id');
    }

    /**
     * Obtener números de serie vendidos
     */
    public function getSerialNumbersAttribute(): array
    {
        return $this->serials()->pluck('serial_number')->toArray();
    }

    /**
     * Devoluciones de este detalle
     */
    public function returnDetails()
    {
        return $this->hasMany(ReturnDetail::class);
    }

    /**
     * Cantidad total devuelta
     */
    public function getQuantityReturnedAttribute(): int
    {
        return $this->returnDetails()->sum('quantity_returned');
    }

    /**
     * Cantidad restante (no devuelta)
     */
    public function getQuantityRemainingAttribute(): int
    {
        return $this->quantity - $this->getQuantityReturnedAttribute();
    }

    /**
     * Verificar si se puede devolver más
     */
    public function canReturn(): bool
    {
        return $this->getQuantityRemainingAttribute() > 0;
    }

    /**
     * Cantidad máxima que se puede devolver
     */
    public function getMaxReturnableQuantityAttribute(): int
    {
        return $this->getQuantityRemainingAttribute();
    }
}