<?php
namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class StockLog extends Model
{
    protected $table = 'stock_logs';

    protected $fillable = [
        'sku_code',
        'warehouse_id',
        'change_quantity',
        'type',
        'related_no',
        'order_id',
        'delivery_no',
        'remark',
    ];

    protected $casts = [
        'change_quantity' => 'integer',
    ];

    /**
     * 关联仓库
     */
    public function warehouse()
    {
        return $this->belongsTo(Warehouse::class);
    }

    /**
     * 关联订单（可选）
     */
    public function order()
    {
        return $this->belongsTo(Order::class);
    }

    /**
     * 获取类型标签
     */
    public function getTypeLabelAttribute()
    {
        $map = [
            'inbound' => '入库',
            'outbound' => '出库',
            'lock' => '占用',
            'unlock' => '释放占用',
            'ship' => '发货出库',
            'defective_inbound' => '残次品入库',
            'adjust' => '手动调整',
        ];
        return $map[$this->type] ?? $this->type;
    }
}