<?php
/**
 * 禁用IP.
 *
 * @author jim <jim458734573@gmail.com>
 * @date   2020-01-31 10:39:38
 */
declare(strict_types=1);

namespace App\Repositories;

use App\Constants\CreatorConstant;
use App\Model\BannedIpModel;
use App\Model\UserModel;
use Carbon\Carbon;
use Hyperf\Redis\Redis;
use KZ2\Repositories\Model\Repository;
use Psr\SimpleCache\CacheInterface;

class BannedIpRepository extends Repository
{
    public function model()
    {
        return BannedIpModel::class;
    }

    /**
     * 是否禁用IP
     * @param $ip
     * @return bool
     */
    public function isBanned($ip)
    {
        $ip = trim($ip);

        return BannedIpModel::query()->where(['ip' => $ip])->exists();
    }

    /**
     * 禁止1个IP.
     * @param $ip
     * @return \Hyperf\Database\Model\Builder|\Hyperf\Database\Model\Model
     */
    public function doBan($ip)
    {
        $ip = trim($ip);

        return BannedIpModel::query()->create(['ip' => $ip]);
    }

    /**
     * 删除一个IP
     * @param $ip
     * @return false|int|mixed
     */
    public function deleteOne($ip)
    {
        $ip = trim($ip);

        return BannedIpModel::query()->where(['ip' => $ip])->take(1)->delete();
    }

    /**
     * 检查黑名单规则.
     * @param $ip
     * @param array $params
     * @return bool
     */
    public function checkBlackRule($ip, $params = [])
    {
        $ip = trim($ip);
        $cacheRepo = make(Redis::class);
        $cacheKey = env('SERVER_CACHE_PREFIX', '') . 'user_ip_check';
        $ipValue = $cacheRepo->hget($cacheKey, $ip);
        $nowDateObj = Carbon::now();
        $isNeedCheck = false;   // 默认不检查.
        if (!empty($ipValue)) {
            // 有值，还需要查看值是否是是当天日期.
            $ipNextCheckDateObj = Carbon::parse($ipValue);
            if ($ipNextCheckDateObj < $nowDateObj) {
                // 下次检查时间小于当前时间，则需要执行检查.
                $isNeedCheck = true;
            }
        } else {
            $isNeedCheck = true;
        }
        if ($isNeedCheck) {
            $redNum = 25;   // 相同IP，当日注册红线数量.

            $startDateObj = Carbon::now()->startOfDay();
            $endDateObj = Carbon::now()->endOfDay();
//            $startDateObj = Carbon::now()->subMinutes(5);
//            $endDateObj = Carbon::now();
            // 统计今天时间段内，相同IP，注册用户数量
            $countIpUsers = UserModel::query()->where(['ip' => $ip])
                ->whereBetween('created_at', [$startDateObj, $endDateObj])
                ->orderByDesc('id')
                ->count('id');
            if ($countIpUsers >= $redNum) {
                // 超过红线，执行禁止IP操作,下次一同一个IP无法注册.
                if (!$this->isBanned($ip)) {
                    $this->doBan($ip);
                }
            }
            $nextCheckDateObj = Carbon::now()->addMinutes(5);
            $nextCheckDate = $nextCheckDateObj->toDateTimeString();
            $cacheRepo->hset($cacheKey, $ip, $nextCheckDate);   // 设置下次检查时间.
        }

        return true;
    }

    /**
     * 清空IP.
     */
    public function clearAllIp()
    {
        BannedIpModel::query()->truncate();
    }
}