<?php

namespace app\common\service;

use app\common\model\ExpressShippingMethodModel;
use utils\RedisCache;

/**
 * 配送费模板列表服务 by wes
 * Class ExpressShippingMethodService
 * @package app\common\service
 */
class ExpressShippingMethodService
{
    protected static $instance = null;
    protected $model = null;

    public function __construct()
    {
        $this->model = new ExpressShippingMethodModel();
    }

    /**
     * 静态化入口
     * @return static|null
     */
    public static function make()
    {
        if(!self::$instance){
            self::$instance = new static();
        }

        return self::$instance;
    }

    /**
     * 获取模板列表
     * @param $templateId 模板ID
     * @param bool $cache 是否缓存
     * @return array|mixed
     * @throws \think\db\exception\DataNotFoundException
     * @throws \think\db\exception\DbException
     * @throws \think\db\exception\ModelNotFoundException
     */
    public function getListByTemplate($templateId, $cache=true)
    {
        if($templateId<=0){
            return false;
        }

        $cacheKey = "caches:shippingList:template_{$templateId}";
        $data = RedisCache::get($cacheKey);
        if($data && $cache){
            return $data;
        }
        $where = ['template_id'=> $templateId];
        $data = $this->model->where($where)->select();
        $data = $data? $data->toArray():[];
        if($data && $cache){
            RedisCache::set($cacheKey, $data, rand(10,20));
        }

        return $data;
    }


}