<?php

namespace App\Service;

use App\Const\RedisConst;
use App\Tools\Tools;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\Redis;

class AuthService
{

    const tokenUidInfo = [
        'uid' => '',
        'device' => '',
    ];
    const uidTokenList = [
        'token_1' => [
            'device' => '',
            'created_time' => '',
            'exp_time' => '',
        ],
    ];

    function checkTokenLogin($sToken): bool
    {
        return $this->getUserInfoByToken($sToken) != null;
    }

    function getUserInfoByToken($sToken)
    {
        if (empty($sToken)) return null;
        $sUidInfo = Redis::get(RedisConst::TOKEN_UID . $sToken);
        if (empty($sUidInfo)) return null;
        return unserialize($sUidInfo);
    }

    function setUserInfoToToken($sToken, $iUid, $sDevice)
    {
        $sUidInfo = serialize([
            'uid' => $iUid,
            'device' => $sDevice,
        ]);
        return Redis::set(RedisConst::TOKEN_UID . $sToken, $sUidInfo, RedisConst::COMMON_EXP_TIME);
    }

    function delUserInfoToToken($sToken)
    {
        return Redis::del(RedisConst::TOKEN_UID . $sToken);
    }

    function getAllTokenInfoByUid($iUid)
    {
        $sTokenList = Redis::get(RedisConst::UID_TOKENS . $iUid);
        if (empty($sToken)) return null;
        return unserialize($sTokenList);
    }

    function checkTokenInUid($iUid, $sToken): bool
    {
        $aTokenInfoList = $this->getAllTokenInfoByUid($iUid);
        if (empty($aTokenInfoList)) return false;
        $aTokenList = array_keys($aTokenInfoList);
        return in_array($sToken, $aTokenList);
    }

    function addTokenToUidInfo($iUid, $sToken, $sDevice)
    {
        $aTokenInfoList = $this->getAllTokenInfoByUid($iUid);
        if (empty($aTokenInfoList)) {
            $aTokenInfoList = [];
        }
        $aTokenInfoList[$sToken] = [
            'device' => $sDevice,
            'created_time' => Carbon::now()->toDateTimeString(),
            'exp_time' => Carbon::parse(time() + RedisConst::COMMON_EXP_TIME)->toDateTimeString(),
        ];
        $sTokenList = serialize($aTokenInfoList);
        return Redis::set(RedisConst::UID_TOKENS . $iUid, $sTokenList);
    }

    function delTokenByUidInfo($iUid, $sToken)
    {
        $aTokenInfoList = $this->getAllTokenInfoByUid($iUid);
        if (empty($aTokenInfoList)) return false;
        if (!isset($aTokenInfoList[$sToken])) return false;
        unset($aTokenInfoList[$sToken]);
        $sTokenList = serialize($aTokenInfoList);
        return Redis::set(RedisConst::UID_TOKENS . $iUid, $sTokenList);
    }

    function getTokenFromReq(\Illuminate\Http\Request $request = null)
    {
        if ($request == null) $request = request();
        $sToken = $request->header('_token');
        if (!empty($sToken)) return $sToken;
        $sToken = $request->input('_token');
        if (!empty($sToken)) return $sToken;
        return null;
    }

    function generateTokenStr(): string
    {
        return time() . Tools::generateRandStr(24);
    }

    //登入使用
    function createTokenToUser($iUid, $sDevice): string
    {
        do {
            $sToken = $this->generateTokenStr();
            if (!$this->checkTokenLogin($sToken)) break;
        } while (1);

        $this->setUserInfoToToken($sToken, $iUid, $sDevice);
        $this->addTokenToUidInfo($iUid, $sToken, $sDevice);
        return $sToken;
    }

    //登出使用
    function delTokenToUser($iUid, $sToken): void
    {
        $this->delUserInfoToToken($sToken);
        $this->delTokenByUidInfo($iUid, $sToken);
    }

    function getTokenInfo()
    {
        $sToken = $this->getTokenFromReq();
        if (empty($sToken)) return null;
        $aUserInfo = $this->getUserInfoByToken($sToken);
        if (empty($aUserInfo)) return null;
        return $aUserInfo;
    }

    function setCurrentUser(array $aUser): void
    {
        app()->singleton('customerUser',function () use ($aUser){
            return $aUser;
        });
    }

    function getCurrentUser()
    {
        if(app()->has('customerUser')){
            return app()->get('customerUser');
        }
        return null;
    }


}