<?php

use App\Services\SettingService;

if (! function_exists('app_settings')) {
    /**
     * 获取/设置应用设置项
     *
     * @param array|string $key
     * @param mixed $default
     * @return mixed
     *
     * @return mixed|\App\Services\SettingService
     */
    function app_settings($key = null, $default = null)
    {
        if (is_null($key)) {
            return app(SettingService::class);
        }

        if (is_array($key)) {
            return app(SettingService::class)->set($key);
        }

        return app(SettingService::class)->get($key, $default);
    }
}

if (! function_exists('serial_number')) {
    /**
     * 生成流水号
     *
     * @return string
     */
    function serial_number(): string
    {
        return date('YmdHis').sprintf('%06d', mt_rand(1, 999999));
    }
}