<?php

namespace App\Http\Requests\Mini;

use Modules\Common\Http\Requests\BaseFormRequest;

/**
 * 小程序购物车 验证（product_id 仅加购时必填；PUT 只改数量）
 */
class MiniCartRequest extends BaseFormRequest
{
    protected $stopOnFirstFailure = true;

    public function rules(): array
    {
        $rules = [
            'quantity' => 'required|numeric|min:0.01|max:99999999.99',
        ];

        if (! $this->isUpdate()) {
            $rules['product_id'] = 'required|integer|exists:product,id';
        }

        return $rules;
    }

    public function messages(): array
    {
        return [
            'product_id.required' => '请选择商品',
            'product_id.integer' => '商品参数错误',
            'product_id.exists' => '商品不存在',
            'quantity.required' => '订货数量不能为空',
            'quantity.numeric' => '订货数量必须为数字',
            'quantity.min' => '订货数量必须大于 0',
            'quantity.max' => '订货数量超出上限',
        ];
    }
}