<?php
namespace common\services;

use Yii;
use common\components\dict;
use common\components\stringUtil;
use linslin\yii2\curl;
use common\components\wxUtil;
use common\components\util;
use common\models\xhStatUserByDay;

class xhStatUserByDayService {

	/**
	 * 当天粉丝增加
	 */
	public static function ChangeUser($sjId,$status=true)
	{
		$todayTime	= strtotime(date("Y-m-d"));
		$numKey		= $sjId.dict::getCacheKey('statUserNumByDay').$todayTime;
		if($status){
			$num	= Yii::$app->redis->executeCommand('INCR', [$numKey]);//记录当天粉丝增加
		}else{
			$num	= Yii::$app->redis->executeCommand('DECR', [$numKey]);//记录当天粉丝减少
		}
	}

	/**
	 * 获取当天粉丝增减数
	 */
	public static function getTodayNum($sjId)
	{
		$time			= strtotime(date("Y-m-d"));
		$numKey			= $sjId.dict::getCacheKey('statUserNumByDay').$time;
		$nowNum			= Yii::$app->redis->executeCommand('GET', [$numKey]);//记录当天访问网站人数
		return !empty($nowNum) ? $nowNum : 0;
	}

	/**
	 * 将昨天的粉丝增减数保存入库
	 */
	public static function saveYesterdayUser($sjId)
	{
		$yesTime		= strtotime(date("Y-m-d",strtotime("-1 day")));
		$arr			= xhStatUserByDay::getByCondition(['sjId' => $sjId,'time' => $yesTime]);
		if(!empty($arr)){
			return [];
		}
		$userKey		= $sjId.dict::getCacheKey('statUserNumByDay').$yesTime;
		$num			= Yii::$app->redis->executeCommand('GET', [$userKey]);
		$riseNum		= !empty($num) ? $num : 0;
		$totalFans		= self::getTotalFans($sjId);
		$todayFans		= self::getTodayNum($sjId);
		$yesTotalNum	= $totalFans - $todayFans;//计算昨天的总粉丝数
		$data			= ['time' => $yesTime,'totalNum' =>$yesTotalNum,'riseNum' =>$riseNum,'sjId' => $sjId,'createTime' => date("Y-m-d H:i:s")];
		$saveData		= self::add($data);
		return $saveData;
	}
	
	/**
	 * 清空昨天的粉丝增减数据（包括缓存与数据库）
	 */
	public static function clearYesNum($sjId)
	{
		$yesTime			= strtotime(date("Y-m-d",strtotime("-1 day")));
		$userKey			= $sjId.dict::getCacheKey('statUserNumByDay').$yesTime;
		$yesterdayVisitNum	= Yii::$app->redis->executeCommand('DEL', [$userKey]);
		xhStatUserByDay::deleteByCondition(['sjId' => $sjId,'time' => $yesTime]);
	}

	/**
	 * 模拟创建昨天的粉丝
	 */
	public static function imitationCreateYesNum($sjId)
	{
		echo "\n模拟创建昨天的粉丝……\n";
		$yesTime		= strtotime(date("Y-m-d",strtotime("-1 day")));
		$userKey		= $sjId.dict::getCacheKey('statUserNumByDay').$yesTime;
		$num			= rand(1,3);
		Yii::$app->redis->executeCommand('SET', [$userKey,$num]);
		echo "\n创建完成\n";
	}

	/**
	 * 获取昨天增减粉丝数
	 */
	public static function getYesNum($sjId)
	{
		$yesTime		= strtotime(date("Y-m-d",strtotime("-1 day")));
		$numKey			= $sjId.dict::getCacheKey('statUserNumByDay').$yesTime;
		$nowNum			= Yii::$app->redis->executeCommand('GET', [$numKey]);//记录当天访问网站人数
		return !empty($nowNum) ? $nowNum : 0;
	}

	/**
	 * 添加
	 */
	public static function add($data)
	{
		return xhStatUserByDay::add($data);
	}

	/**
	 * 总的粉丝数
	 */
	public static function getTotalFans($sjId)
	{
		$asset		= xhMerchantAssetService::getBySjId($sjId);
		$totalFans	= $asset['totalFans'];
		return $totalFans;
	}

	/**
	 * 初始化最近N天的粉丝数据
	 */
	public static function makeLatestUser($sjId)
	{
		$latestKey					= dict::getCacheKey('latestUserNum').$sjId;
		Yii::$app->redis->executeCommand('DEL', [$latestKey]);
		$todayFans					= self::getTodayNum($sjId);
		$rows						= (new \yii\db\Query())->from('xhStatUserByDay')->where(['sjId' => $sjId])->orderBy('time ASC')->limit(19)->all();
		$data						= [];
		if(!empty($rows)){
			foreach($rows as $val){
				Yii::$app->redis->executeCommand('ZADD', [$latestKey, $val['time'], $val['riseNum']]);
				$data[$val['time']]	= $val['riseNum'];
			}
		}
		$time						= strtotime(date("Y-m-d"));
		$data[$time]				= $todayFans;
		ksort($data);
		return $data;
	}

	/**
	 * 获取最近N天的粉丝数据
	 */
	public static function getLatestUser($sjId)
	{
		$latestKey			= dict::getCacheKey('latestUserNum').$sjId;
		$return				= Yii::$app->redis->executeCommand('ZREVRANGE', [$latestKey, 0,-1, 'WITHSCORES']);//返回有序集合，从高分到低分排序
		$list				= [];
		if(empty($return)){
			return self::makeLatestUser($sjId);
		}
		$i			= 0;
		$arr		= [];
		foreach($return as $key => $val){
			if($key%2 == 0){
				$arr[$i]['value']	= $val;
			}else{
				$arr[$i]['key']		= $val;
				$i++;
			}
		}
		foreach($arr as $key => $val){
			$list[$val['key']]	= $val['value'];
		}
		$todayFans					= self::getTodayNum($sjId);
		$time						= strtotime(date("Y-m-d"));
		$list[$time]				= $todayFans;
		ksort($list);
		return $list;
	}
	
}