<?php

namespace app\api\validate;

use think\Validate;

/**
 * 折扣API接口验证器
 */
class Discount extends Validate
{
    /**
     * 验证规则
     */
    protected $rule = [
        'page' => 'integer|between:1,1000',
        'pageSize' => 'integer|between:1,50',
        'goods_ids' => 'array|checkGoodsIdsArray',
        'goods_id' => 'require|integer|gt:0',
        'sku_id' => 'integer|egt:0',
    ];

    /**
     * 提示消息
     */
    protected $message = [
        'page.integer' => '页码必须为整数',
        'page.between' => '页码必须在1-1000之间',
        'pageSize.integer' => '每页数量必须为整数',
        'pageSize.between' => '每页数量必须在1-50之间',
        'goods_ids.require' => '商品ID不能为空',
        'goods_ids.array' => '商品ID必须为数组格式',
        'goods_id.require' => '商品ID不能为空',
        'goods_id.integer' => '商品ID必须为整数',
        'goods_id.gt' => '商品ID必须大于0',
        'sku_id.integer' => 'SKU ID必须为整数',
        'sku_id.egt' => 'SKU ID不能小于0',
    ];

    /**
     * 验证场景
     */
    protected $scene = [
        'lists' => ['page', 'pageSize', 'goods_ids'],
        'goods' => ['goods_id', 'sku_id'],
        'batch' => ['goods_ids' => 'require|array|checkGoodsIdsArray'],
    ];

    /**
     * 自定义验证规则 - 验证商品ID数组格式
     */
    protected function checkGoodsIdsArray($value, $rule, $data = [])
    {
        // 允许为空数组
        if (empty($value)) {
            return true;
        }

        // 必须是数组
        if (!is_array($value)) {
            return '商品ID必须为数组格式';
        }

        // 检查数组中的每个值
        foreach ($value as $id) {
            if (!is_numeric($id) || intval($id) <= 0) {
                return '商品ID必须为正整数';
            }
        }

        // 检查数量限制
        if (count($value) > 100) {
            return '一次最多查询100个商品';
        }

        return true;
    }
}