<?php

namespace app\common\service;

use app\common\validate\InvItemValidate;
use app\common\traits\crud\CrudServiceTrait;
use app\common\model\InvItem;
use support\Request;

class InvItemService
{

    use CrudServiceTrait;

    /**
     * 指定当前要操作的模型
     */
    protected string $modelClass = InvItem::class;

    /**
     * 验证器
     */
    protected $validator = InvItemValidate::class;

    /**
     * 获取验证器
     */
    public function getValidator()
    {
        return  new $this->validator;
    }

    /**
     * 生成 8-12 位的物品编码（默认10位）
     *
     * @param int $length 编码长度，默认为10（范围 8-12）
     * @return string     返回大写的字母数字组合编码
     */
    private function generateItemCode($length = 10)
    {
        // 排除易混淆字符：0, O, o, 1, I, l
        $chars = '23456789ABCDEFGHJKLMNPQRSTUVWXYZ';
        $code = '';
        $maxIndex = strlen($chars) - 1;

        for ($i = 0; $i < $length; $i++) {
            $code .= $chars[mt_rand(0, $maxIndex)];
        }

        return $code;
    }


    public function beforeServiceStore($data, Request $request): array
    {
        $data['item_code'] = $this->generateItemCode();
        $data['category_id'] = 0;
        $data['spec_model'] = '';
        $data['unit'] = '件';
        $data['is_consumable'] = 0;
        $data['stock_qty'] = 1;
        $data['location'] = '';
        return $data;
    }
}