<?php
declare(strict_types=1);
namespace plugin\saiadmin\app\service\fulfillment;
use plugin\saiadmin\exception\ApiException;

/** Pure balance calculations; the application service owns locks and persistence. */
final class DeliverySettlement
{
    public static function receive(array $task,array $sku,array $account,int $accepted,int $empty): array
    {
        $quantity=(int)$task['quantity'];
        if ($accepted>$quantity) throw new ApiException('实收桶数不能超过配送桶数');
        if ($empty>(int)$account['empty_qty']) throw new ApiException('回收空桶超过企业账面空桶，请先核对现场库存');
        if ((int)$sku['transit']<$quantity || (int)$account['frozen']<$quantity || (int)$account['entitlement']<$quantity) throw new ApiException('在途库存或冻结权益异常，请先核账');
        return [
            'sku'=>['transit'=>(int)$sku['transit']-$accepted],
            'account'=>['entitlement'=>(int)$account['entitlement']-$accepted,'frozen'=>(int)$account['frozen']-$accepted,
                'full_qty'=>(int)$account['full_qty']+$accepted,'empty_qty'=>(int)$account['empty_qty']-$empty],
        ];
    }
    public static function returned(array $task,array $sku,array $account,int $good,int $damaged): array
    {
        $remaining=(int)$task['quantity']-(int)$task['delivered_qty'];
        if ($good+$damaged!==$remaining) throw new ApiException('可用退回与破损隔离桶数合计必须等于待退回桶数');
        if ((int)$sku['transit']<$remaining || (int)$account['frozen']<$remaining) throw new ApiException('在途库存或冻结权益异常，请先核账');
        return [
            'sku'=>['transit'=>(int)$sku['transit']-$remaining,'available'=>(int)$sku['available']+$good,'damaged_qty'=>(int)$sku['damaged_qty']+$damaged],
            'account'=>['frozen'=>(int)$account['frozen']-$remaining],
        ];
    }
}