<?php

namespace app\common\model;

use app\common\library\Redis;
use think\Cache;
use think\Model;

class ChannelSpecialManage extends Model
{
    // 表名
    protected $table = 'channel_special_manage';
    
    // 自动写入时间戳字段
    protected $autoWriteTimestamp = 'int';

    // 定义时间戳字段名
    protected $createTime = 'createtime';
    protected $updateTime = 'updatetime';

    protected $redisKey = "CFW:";
    
    // 追加属性
    protected $append = [];

    protected static function init()
    {
        parent::init(); // TODO: Change the autogenerated stub

        self::afterUpdate(function ($model) {
            $model->removeCache($model->rule_name);
        });

        self::afterDelete(function ($model) {
            $model->removeCache($model->rule_name);
        });
    }

    /**
     * 是否是白名单
     * @param $rule_name
     * @param $channel_id
     * @return int
     */
    public function isWhite($rule_name, $channel_id)
    {
        $isWhite = 0;
        $redisKey = $this->redisKey.$rule_name;
        $redisData = Redis::instance()->hGetAll($redisKey);
        $fromDb = false;

        if (!empty($redisData)) {
            if (isset($redisData['expire_time']) && $redisData['expire_time'] <= time()) {
                $fromDb = true;
            } else {
                if (strrpos($redisData['channel_id'], '*') !== false) {
                    //全部
                    $isWhite = 1;
                } else if (strlen($redisData['channel_id']) > 0) {
                    $channelIdArr = explode(',', $redisData['channel_id']);
                    if (in_array($channel_id, $channelIdArr)) {
                        $isWhite = 1;
                    }
                }
            }
        } else {
            $fromDb = true;
        }

        if ($fromDb) {
            //读库缓存所有的结果
            $data = [
                'channel_id' => ''
            ];
            $dbRow = $this->where('rule_name', 'eq', $rule_name)->find();
            if ($dbRow) {
                $data = $dbRow->toArray();
                $channelIdsRow =model("ChannelMenuList")->where('id', 'eq', $data['channel_id'])->find();
                $data['channel_id'] = $channelIdsRow['channel_id'] ?: '';

                if (strrpos($data['channel_id'], '*') !== false) {
                    //全部
                    $isWhite = 1;
                } else if (strlen($data['channel_id']) > 0) {
                    $channelIdArr = explode(',', $data['channel_id']);
                    if (in_array($channel_id, $channelIdArr)) {
                        $isWhite = 1;
                    }
                }
            }

            $data['expire_time'] = time() + 600;
            //写入redis 哈希结构
            Redis::instance()->hMSet($redisKey, $data);
            $expire = 3600 + mt_rand(0, 1000);
            Redis::instance()->expire($redisKey, $expire);
        }
        return $isWhite;
    }

    public function removeCache($rule_name)
    {
        $key = $this->redisKey.$rule_name;
        Redis::instance()->del($key);
    }
}