<?php

namespace App\Service;

use App\Constants\ErrorCode;
use App\Exception\SsdbException;
use Hyperf\Utils\ApplicationContext;
use App\TaskWorker\SSDBTask;

class ParamsTokenSsdbService implements ParamsTokenServiceInterface
{
    const HASH_PREFIX = 'params_token_';

    public function generate($params)
    {
        $token = md5(json_encode($params));

        $ssdb = ApplicationContext::getContainer()->get(SSDBTask::class);

        $kvs = [];
        foreach ($params as $key => $value) {
            $kvs[] = $key;
            $kvs[] = $value;
        }

        if(false === $ssdb->exec('multi_hset', self::HASH_PREFIX.$token, $kvs)) {
            throw new SsdbException(ErrorCode::SSDB_ERROR, 'token生成失败');
        }

        return $token;
    }

    public function analyze($token)
    {
        $ssdb = ApplicationContext::getContainer()->get(SSDBTask::class);
        $params = $ssdb->exec('hgetall', self::HASH_PREFIX.$token);

        if (false === $params) {
            throw new SsdbException(ErrorCode::SSDB_ERROR, 'token解析失败');
        }

        if (empty($params)) {
            throw new SsdbException(ErrorCode::SSDB_ERROR, 'token不存在');
        }

        return $params;
    }

}