<?php
namespace common\services;
use Yii;

use common\models\xhArticle;
use common\models\xhArticleCategory;
use common\components\dict;

class xhArticleService {

	/**
	 * 管理员添加文章
	 */
	public static function addByAdmin($data)
	{
		$article		= xhArticle::add($data);
		$id				= $article['id'];
		$idstring		= $data['categoryId'];
		$ids			= explode(',',$idstring);
		$ids			= array_filter($ids);//删除空元素
		$catData		= [];
		$sjId		= $data['sjId'];
		foreach($ids as $cId){
			$catData[] = array('sjId' => $sjId,'aId' => $id,'cId' => $cId);
		}
		xhArticleCategory::batchAdd($catData);
	}

	/**
	 * 管理员更新文章
	 */
	public static function updateAllById($id,$data,$sjId)
	{
		xhArticle::updateById($id, $data);

		//删除原有的分类
		xhArticleCategory::deleteByCondition(['aId' => $id,'sjId' => $sjId]);

		$idstring		= $data['categoryId'];
		$ids			= explode(',',$idstring);
		$ids			= array_filter($ids);//删除空元素
		$catData		= array();
		foreach($ids as $cId){
			$catData[] = array('sjId' => $sjId,'aId' => $id,'cId' => $cId);
		}
		xhArticleCategory::batchAdd($catData);

	}
	
	public static function getById($id)
	{
		$cacheKey		= dict::getCacheKey('article').$id;
		$article		= Yii::$app->redis->executeCommand('HGETALL', [$cacheKey]);
		if(!empty($article)){
			$arr		= [];
			$i			= 0;
			$x			= 0;
			foreach($article as $key => $val){
				$i++;
				if($i%2 == 0){
					$arr[$x]['value'] = $val;
					$x++;
				}else{
					$arr[$x]['key'] = $val;
				}
			}
			$articleArr	= [];
			foreach($arr as $key => $val){
				$articleArr[$val['key']] = $val['value'];
			}
			unset($articleArr['info_already_get_by_sql']);
			return $articleArr;
		}
		$article			= xhArticle::find()->where(['id' => $id])->asArray()->one();
		$params				= [$cacheKey];
		$params[]			= 'info_already_get_by_sql';
		$params[]			= 'ok';//redis没有办法设置带空值的键，加此可以数据空时表示取过
		if(!empty($article)){
			foreach($article as $key => $val){
				$params[] = $key;
				$params[] = $val;
			}
		}
		Yii::$app->redis->executeCommand('HMSET',$params);
		return $article;
	}

	public static function updateById($id,$data)
	{
		xhArticle::updateById($id, $data);
		self::getById($id);
		$cacheKey			= dict::getCacheKey('article').$id;
		$articleParams		= [$cacheKey];
		foreach($data as $key => $val){
			$articleParams[] = $key;
			$articleParams[] = $val;
		}
		Yii::$app->redis->executeCommand('HMSET',$articleParams);//更新缓存信息
	}

}