kknongchang_2506/app/Module/Farm/Validators/PickAmountValidator.php

<?php

namespace App\Module\Farm\Validators;

use App\Module\Farm\Models\FarmCrop;
use UCore\Validation\BaseValidator;

/**
 * 摘取数量验证器
 * 验证摘取数量是否合理
 */
class PickAmountValidator extends BaseValidator
{
    /**
     * 验证摘取数量
     *
     * @param FarmCrop $crop 作物模型
     * @param int $pickAmount 摘取数量
     * @return bool
     */
    public function validate(FarmCrop $crop, int $pickAmount): bool
    {
        // 检查摘取数量是否超过当前可摘取数量
        if ($pickAmount > $crop->pickable_amount) {
            $this->addError("摘取数量({$pickAmount})超过可摘取数量({$crop->pickable_amount})");
            return false;
        }

        // 检查单次摘取比例是否超过配置限制
        $maxRatio = $crop->seed->pick_max_ratio ?? 0.3; // 默认最大30%
        $pickRatio = $pickAmount / $crop->final_output_amount;
        
        if ($pickRatio > $maxRatio) {
            $maxAmount = (int)($crop->final_output_amount * $maxRatio);
            $this->addError("单次摘取比例({$pickRatio})超过限制({$maxRatio})，最多可摘取{$maxAmount}个");
            return false;
        }

        // 验证摘取数量的合理性（必须大于0）
        if ($pickAmount <= 0) {
            $this->addError('摘取数量必须大于0');
            return false;
        }

        return true;
    }
}