<?php

namespace App\Service;

use App\Constants\ErrorCode;
use App\Constants\LogLabel;
use App\Constants\SsdbKeysPrefix;
use App\Exception\SsdbException;
use Hyperf\Utils\ApplicationContext;
use App\TaskWorker\SSDBTask;
use Hyperf\Di\Annotation\Inject;
use App\Commons\Log;

class ParamsTokenSsdbService implements ParamsTokenServiceInterface
{

    /**
     * @Inject
     * @var Log
     */
    protected $log;

    /**
     * 生成token并存储对应数据
     * @param $params
     */
    public function generate($params)
    {
        $token = $params['token_name'] ?? md5(json_encode($params));

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

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

        if(false === $ssdb->exec('multi_hset', SsdbKeysPrefix::PARAMS_TOKEN.$token, $kvs)) {

            $this->log->event(
                LogLabel::SSDB_LOG,
                ['method' => 'multi_hset', 'key' => SsdbKeysPrefix::PARAMS_TOKEN.$token, 'kvs' => $kvs]
            );

            throw new SsdbException(ErrorCode::SSDB_ERROR, 'token生成失败');
        }

        return $token;
    }

    /**
     * 解析token获取对应数据参数
     * @param $token
     */
    public function analyze($token)
    {
        $ssdb = ApplicationContext::getContainer()->get(SSDBTask::class);
        $params = $ssdb->exec('hgetall', SsdbKeysPrefix::PARAMS_TOKEN.$token);

        if (false === $params) {

            $this->log->event(
                LogLabel::SSDB_LOG,
                ['method' => 'hgetall', 'key' => SsdbKeysPrefix::PARAMS_TOKEN.$token, 'params' => $params]
            );

            throw new SsdbException(ErrorCode::SSDB_ERROR, 'token解析失败');
        }

        if (empty($params)) {

            $this->log->event(
                LogLabel::SSDB_LOG,
                ['method' => 'hgetall', 'key' => SsdbKeysPrefix::PARAMS_TOKEN.$token, 'params' => $params]
            );

            throw new SsdbException(ErrorCode::SSDB_ERROR, 'token不存在');
        }

        return $params;
    }

}