<?php

namespace app\controllers;

use  Yii;
use app\models\base\Comments;
use app\models\base\NewsTopic;
use app\models\base\Story;
use app\models\front\News;
use yii\db\Expression;
use yii\helpers\ArrayHelper;
use yii\helpers\Url;
use yii\web\Controller;
use yii\web\NotFoundHttpException;
use yii\web\Response;
use  \app\helpers\Uuid;

class NewsController extends Controller
{

    /**
     * {@inheritdoc}
     */
    public function behaviors()
    {
        return [
			[
            'class' => 'yii\filters\HttpCache',
            'only' => ['index'],
			'enabled' => true,
			'cacheControlHeader' => 'public, max-age=120',
			'lastModified' => function ($action, $params) {
					return time();
				}
			],
        ];
    }

    public function actionIndex($topic=NULL)
    {
		$url = \Yii::$app->request->pathInfo;
		if( $url == 'news/' ){
			$queryString = \Yii::$app->request->queryString?'?'.\Yii::$app->request->queryString:'';
			$this->redirect('/news'.$queryString, 301);
			return '';
		}
		$gets = \Yii::$app->request->get();
		$valid_get = array_filter($gets, function($k) {
			$valid = ['page'=>true,'daterange'=>true,'topic'=>true];
			return isset( $valid[$k] );
		}, ARRAY_FILTER_USE_KEY);
		if( count($gets) != count($valid_get) ){
			$url = Url::toRoute(['news/index']+$valid_get);
			$this->redirect($url, 301);
			return '';
		}

        if(\Yii::$app->request->get("page",0)>500) {
            \Yii::$app->request->setQueryParams(["page"=>500]);
        }
		$url = $topic;
        $topic = NewsTopic::findOne(['url'=>$topic,'active'=>1]);
        if(!$topic instanceof NewsTopic){

            $topic = new \stdClass();
            $topic->id = NULL;
        }
        if( $url && !$topic->id )	throw new NotFoundHttpException("Раздел не найден");
		$pages = null;
        if( $topic->id ){
//			$news_query = \app\models\front\News::find()->leftJoin('news_topic_relation t', 't.news_id = id')->andWhere(['t.topic_id'=>$topic->id]);

            $news_query = News::find()
                ->from(new Expression("news FORCE INDEX (top,calendar) , news_topic_relation t USE index(news_id)"))
                ->andWhere(new Expression('t.news_id=id'))
                ->andWhere(['t.topic_id'=>$topic->id]);
				$dateRange = \Yii::$app->request->get('daterange',NULL);
				$dateRanges = $dateRange;
				if(!is_null($dateRange) && $dateRange!=""){
					$dateRange = explode(" — ",$dateRange);
					$dateRange[0] = date("Y-m-d 00:00:01",strtotime($dateRange[0]));
					$dateRange[1] = isset($dateRange[1])?date("Y-m-d 23:59:59",strtotime($dateRange[1])):date("Y-m-d 23:59:59",strtotime($dateRange[0]));
					$news_query->andWhere(["BETWEEN","dt_pub",$dateRange[0],$dateRange[1]]);
				}

			$cnt = \Yii::$app->cache->getOrSet('topic_cnt_'.$topic->id."_$dateRanges", function () use ($news_query){
				return $news_query->count();
			},7200);

/*
 * Оптимизировано но не понятно как убрать автоматический offset при пагинации во внешнем селекте 4с->0.7c
			$sub_query = News::find()->select('news.id')->from(new Expression("news as news USE INDEX (calendar)"))
			->join('inner join', 'news_topic_relation', 'news_topic_relation.news_id=news.id AND news_topic_relation.topic_id='.$topic->id)->offset($pages->offset)->limit($pages->limit);

			$news_query = News::find()
							->from( 'news' )
							->join( 'join',['nl'=>$sub_query], 'news.id=nl.id' );
*/

		}else{
			$news_query = \app\models\front\News::findFilter();
			$keyadd = \app\models\front\News::keyFilter();
			$dateRange = \Yii::$app->request->get('daterange',NULL);
			$dateRanges = crc32($dateRange);
			if(!is_null($dateRange) && $dateRange!=""){
				$dateRange = explode(" — ",$dateRange);
				$dateRange[0] = date("Y-m-d 00:00:01",strtotime($dateRange[0]));
				$dateRange[1] = isset($dateRange[1])?date("Y-m-d 23:59:59",strtotime($dateRange[1])):date("Y-m-d 23:59:59",strtotime($dateRange[0]));
				$news_query->andWhere(["BETWEEN","dt_pub",$dateRange[0],$dateRange[1]]);
			}

			$cnt = \Yii::$app->cache->getOrSet('topic_cnt'.$keyadd."_$dateRanges", function () use ($news_query){
				return $news_query->count();
			},7200);
		}
		$cnt = ($cnt/20 > 500)?500*20:$cnt;
		$pages = new \yii\data\Pagination(['totalCount' => $cnt, 'pageSize'=>20]);
		if($topic instanceof NewsTopic){
/*
		Приведение к каноническому маршруту в пагинации
*/
			unset($valid_get['topic']);
			$pages->params = $valid_get;
			$pages->route = 'news/'.$topic->url;
//
// 			Нормализация к каноническому URL
//
			$queryString = \Yii::$app->request->queryString?'?'.\Yii::$app->request->queryString:'';
			if( \Yii::$app->request->url != '/'.$pages->route.$queryString ){
				$url = Url::toRoute(['news/'.$topic->url]+$valid_get);
/*				echo \Yii::$app->request->url.'<br>';
				echo $pages->route.$queryString.' <br>';
				echo $url;	*/
				$this->redirect($url, 301);
				return '';
			}
		}
		//$pages->urlManager = Url::toRoute(['news/index']+$valid_get);

//		$headers = Yii::$app->response->headers;
//		$headers->set('Expires', gmdate('D, d M Y H:i:s \G\M\T', time() + (60 * 2)));

        return $this->render("index",["topic"=>$topic,"daterange"=>$dateRange,"news_query"=>$news_query,"pages"=>$pages,"keycahe"=>isset($keyadd)?$keyadd:'']);
    }

    public function actionStory($topic=NULL)
    {
        $topic = Story::findOne(['url'=>$topic]);
        if(!$topic instanceof Story){

            $topic = new \stdClass();
            $topic->id = NULL;
        }
        if( $topic->id ){
			$news_query = \app\models\front\News::find()->leftJoin('story_relation t', 't.news_id = id')->andWhere(['t.topic_id'=>$topic->id]); //joinWith('topics t')->andFilterWhere(['t.id'=>$topic->id]);
//			print_r($news_query->createCommand()->rawSQL);exit;
		}else{
			$news_query = \app\models\front\News::find();	// optimized
		}
		$cnt = \Yii::$app->cache->getOrSet('story_cnt_'.$topic->id, function () use ($news_query){
				return $news_query->count();
				},7200);

		$pages = new \yii\data\Pagination(['totalCount' => $cnt, 'pageSize'=>20]);

		$dateRange = \Yii::$app->request->get('daterange',NULL);
        if(!is_null($dateRange) && $dateRange!=""){
            $dateRange = explode(" — ",$dateRange);
            $dateRange[0] = date("Y-m-d 00:00:01",strtotime($dateRange[0]));
            $dateRange[1] = isset($dateRange[1])?date("Y-m-d 23:59:59",strtotime($dateRange[1])):date("Y-m-d 23:59:59",strtotime($dateRange[0]));
            $news_query->andWhere(["BETWEEN","dt_pub",$dateRange[0],$dateRange[1]]);
        }
        return $this->render("index",["topic"=>$topic,"daterange"=>$dateRange,"news_query"=>$news_query,"pages"=>$pages]);
    }


    /**
     * @param int $id
     */
    public function actionView(int $id) {

        $model = $this->findModel($id);
        if(!$model instanceof News) throw new NotFoundHttpException("Новость не найдена");
        if( $link = trim( $model->link ) ){
			$link = str_replace( 'http://www.amic.ru', '', $link);
			$this->redirect($link, 301);
			return '';
		}
		$queryString = \Yii::$app->request->queryString?'?'.\Yii::$app->request->queryString:'';

		if( \Yii::$app->request->url != $model->getUrl().$queryString ){
			$this->redirect($model->getUrl(true).$queryString, 301);
			return '';
		}

        if(\Yii::$app->request->isPost){
            $capcha_result = base64_decode(\Yii::$app->request->post('capcha_salt'))/3.14;
            if(
                \Yii::$app->request->post('capcha')=="" ||
                \Yii::$app->request->post('capcha')!= $capcha_result
            ){
                \Yii::$app->session->setFlash('danger','Ошибка размещения комментария, пример решен неверно. Правильный ответ был: '.$capcha_result);
            } else {
                if(\Yii::$app->request->post('message')!=""){
                    $comment = new Comments();
                    if( $comment::$conf->isActive() ){
						$comment->fakename = str_replace('"',"'", (\Yii::$app->request->post('fakename')));
						$comment->message = strip_tags(\Yii::$app->request->post('message'),'<i><b><s><u>');
						$comment->news_id = $model->id;
						$comment->visible = ( $comment::$conf->isPreModerate() )?'N':'Y'; //если пользователь зареген поставить true
						$comment->ip_address = \Yii::$app->request->getRemoteIP().",".\Yii::$app->request->userIP;
						$comment->user_agent = \Yii::$app->request->userAgent;
						$comment->created_at = date("Y-m-d H:i:s");
						$comment->parent_id = \Yii::$app->request->post('parent_id');
						$res = $comment->save();
						if($res){
							\Yii::$app->session->setFlash('success','Комментарий успешно отправлен на модерацию');
							$this->redirect($model->getUrl()."#comments");
							\Yii::$app->end();
						} else {
							\Yii::$app->session->setFlash('danger','Ошибка размещения комментария');
						}
					}
                }
            }
        }
        return $this->render('view',['model'=>$model]);
    }
    /**
     * @param string $uid
     * @return string
     */
    public function actionUidView(string $uid):string {
		if( Uuid::isvalid($uid) ){
			$model = \app\models\News::find()->andWhere(['uid'=>$uid])->one();
			if(!$model instanceof \app\models\News) throw new NotFoundHttpException("Новость не найдена");
			if( $model->active == 'N' || strtotime($model->dt_pub) > time() ){
				return $this->render('view',['model'=>$model]);
			}else{
				$this->redirect($model->geturl());
				return '';
			}
		}else{
			throw new NotFoundHttpException("Новость не найдена");
		}
	}

    public function actionStoryslugView($storyslug):string
    {
        $model = News::find()->andWhere(['alias'=>$storyslug])->one();
        if(!$model instanceof News) throw new NotFoundHttpException("Новость не найдена");
        return $this->render('view',['model'=>$model]);
    }

    public function actionInfinityNewsfeed($post_id,$last_post_id=NULL,$amount=0){
        if($last_post_id=="null"){
            $last_post = News::find()->limit(1)->one();
        } else {
            $last_post = News::findOne(["id"=>$last_post_id]);
        }

        $feed = News::find()
            ->andWhere(['!=','id',$post_id])
            //->andFilterWhere(['<','id',$last_post_id])
            ->andFilterWhere(['<','dt_pub',$last_post->dt_pub])
            ->limit(1)
        ->one();
        if(!is_null($feed)){
            return $this->asJson([
                "id"=>$feed->id,
                "html"=>$this->renderPartial('/news/view/infinity_newsfeed/_item',["model"=>$feed,"index"=>$amount])
            ]);
        }
        return NULL;

    }

	public function actionClike(){
		if(\Yii::$app->request->isPost){
			if(\Yii::$app->request->post('id') && \Yii::$app->request->post('grd')  ){
				$id = (int) \Yii::$app->request->post('id');		//комент
				$nid = (int) \Yii::$app->request->post('nid');	//новость
				$grd = (int) \Yii::$app->request->post('grd');	//градиент
				if( Comments::isUserLike($id) ) return $this->asJson(['err']);
				if( $id > 0 &&  ( $grd == 1 || $grd == -1 ) ){
					$comment = Comments::findOne($id);
					$comment->likeed += $grd;
					if( $comment->save() ){
						Comments::setUserLike($nid, $id);
					}
				}
			}
		}
		return $this->asJson(['ok']);
	}
    public function actionSsearch()
    {
		if (Yii::$app->request->isGet && $get = Yii::$app->request->get('query')){
			$model = new Story();
			$gets = mb_strlen( $get ) < 6?$get.'*':$get;
			$items = $model->search($gets, 10);
			$res = array();
			$json = '{}';
			$resj = json_decode($json);
			$resj->query = $get;
			if( $items && is_array( $items ) ){
				foreach( $items as $item ){
					$res[] = array( 'data'=>$item['id']*1, 'value'=>$item['title'] );
				}
				$resj->suggestions = $res;
				return json_encode( $resj );
			}
		}
		$json = '{}';
		$resj = json_decode($json);
		$resj->query = $get;
		$resj->suggestions = [];
        return json_encode( $resj );
    }

    private function findModel($id)
    {
        return News::find()->andWhere(['id'=>$id])->limit(1)->one();
    }
}