<?php


namespace App\Services;


use App\Menu;
use App\UserVisitMenuLog;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Redis;

class CheckActiveMenuService
{
    public static function sync()
    {
        try {
            $userVisitMenuLogsL1 = Redis::LRANGE('UserVisitMenuLogsL1', 0, -1);
            UserVisitMenuLog::query()->insert(self::redisListToArray($userVisitMenuLogsL1));
            self::switchL1ToL2();
        } catch (\Exception $e) {
            return;
        }
    }

    /**
     * @param Request $request
     */
    public static function set(Request $request): void
    {
        $uri = substr($request->getRequestUri(), 1);
        // 请求方法为get
        if ($request->method() == 'GET') {
            $menu = Menu::query()->where('route', $uri)->first();
            if ($menu) {
                //redis正常保存在缓存中
                $date = date('Y-m-d H:i:s');
                $userVisitMenuLog = new UserVisitMenuLog([
                    'user_id' => Auth::user()['id'],
                    'menu_id' => $menu->id,
                    'created_at' => $date,
                    'updated_at' => $date,
                ]);
                try {
                    //菜单点击入缓存
                    Redis::LPUSH('UserVisitMenuLogsL1', $userVisitMenuLog);
                } catch (\Exception $e) {
                    //连接不上缓存。直接入库
                    $userVisitMenuLog->save();
                }
            }
        }
    }

    /**
     * 将缓存中的数据拿出保存，转换为数组，方便数据库保存
     * @param $userVisitMenuLogsStr
     * @return array
     */
    public static function redisListToArray($userVisitMenuLogsStr): array
    {
        $userVisitMenuLogsArr = [];
        foreach ($userVisitMenuLogsStr as $userVisitMenuLog) {
            $userVisitMenuLogObj = json_decode($userVisitMenuLog);
            $userVisitMenuLogsArr[] = [
                'user_id' => $userVisitMenuLogObj->user_id,
                'menu_id' => $userVisitMenuLogObj->menu_id,
                'created_at' => $userVisitMenuLogObj->created_at,
                'updated_at' => $userVisitMenuLogObj->updated_at,
            ];
        }
        return $userVisitMenuLogsArr;
    }

    /**
     *将L1缓存转移到L2
     */
    public static function switchL1ToL2(): void
    {
        while (Redis::LLEN('UserVisitMenuLogsL1') > 0) {
            Redis::LPUSH('UserVisitMenuLogsL2', Redis::LPOP('UserVisitMenuLogsL1'));
        }
    }
}