<?php

namespace App\Http\Requests\Purchase;

use Modules\Common\Http\Requests\BaseFormRequest;

/**
 * 采购单门店单品 新增/修改 验证（amount = 数量×单价 由后端重算）
 */
class PurchaseStoreItemRequest extends BaseFormRequest
{
    protected $stopOnFirstFailure = true;

    public function rules(): array
    {
        if ($this->isUpdate()) {
            return [
                'quantity' => 'required|integer|min:0',
                'price' => 'nullable|numeric|min:0',
                'weight' => 'nullable|numeric|min:0',
            ];
        }

        return [
            'product_id' => 'required|integer|exists:product,id',
            'quantity' => 'required|integer|min:1',
            'weight' => 'nullable|numeric|min:0',
        ];
    }

    public function messages(): array
    {
        return [
            'product_id.required' => '请选择商品',
            'product_id.exists' => '商品不存在或已删除',
            'quantity.required' => '采购数量不能为空',
            'quantity.integer' => '采购数量必须为整数',
            'quantity.min' => '采购数量不能小于 0',
            'price.numeric' => '单价必须为数字',
            'price.min' => '单价不能小于 0',
            'weight.numeric' => '称重必须为数字',
            'weight.min' => '称重不能小于 0',
        ];
    }
}