<?php
/*
Author: 		Riccardo Di Dato
Creation Date:	05/feb/2016
*/

class PipelineHelper {

    private static function sumFieldFilterDate($filter, $field, $from = null, $to = null) {
        if (!is_null($from) || !is_null($to)) {
            $filter['time'] = [];
            if (!is_null($from)) {
                $filter['time'] = [
                    '$gte' => new MongoDB\BSON\UTCDateTime($from * 1000)
                ];
            }
            if (!is_null($to)) {
                $filter['time'] = [
                    '$lte' => new MongoDB\BSON\UTCDateTime($to * 1000)
                ];
            }
        }
		$rval = [
                [
                    '$match' => $filter
                ],
                [
                    '$group' => [
                        '_id' =>  null,
                        'tot' => ['$sum' => '$'.$field]
                    ]
                ]
        ];
		return $rval;
    }

    public static function getNotiziaImpressions($id, $from = null, $to = null){
        return self::sumFieldFilterDate(
            [
                'notizia' => $id
            ],
            'views',
            $from,
            $to
        );
	}

    public static function getBannerImpressions($id, $from = null, $to = null){
        return self::sumFieldFilterDate(
            [
                'banner' => $id
            ],
            'views',
            $from,
            $to
        );
	}

    public static function getBannerClicks($id, $from = null, $to = null){
        return self::sumFieldFilterDate(
            [
                'banner' => $id
            ],
            'clicks',
            $from,
            $to
        );
	}
	
	public static function getDailyVisualizationPipeline($startDate){
		$rval = array(
				array(
						'$match'=>array(
								'statType'=>StatisticModel::STAT_TYPE_PAGE,
								'date'=>array(
// 										'$gte'=>new MongoDate($startDate)
										'$gte'=>new MongoDB\BSON\UTCDateTime($startDate * 1000)
								)
						)
				),
				array(
						'$group'=>array(
								"_id"=>array(
										'date'=>array(
												"day"=>array('$dayOfMonth'=>'$date'),
												"month"=>array('$month'=>'$date'),
												"year"=>array('$year'=>'$date')
										),
										'user'=>'$user.id',
								),
								"visualizzazioni"=>array(
										'$sum'=>1
								),
								"isNew"=>array(
										'$sum'=>array(
												'$cond'=>array(
														array('$eq'=>array('$user.isNew',true)),
														1,
														0
												)
										)
								)
						)
				),
				array(
						'$group'=>array(
								"_id"=>array(
										'date'=>'$_id.date'
								),
								"visualizzazioni"=>array(
										'$sum'=>'$visualizzazioni'
								),
								"unici"=>array(
										'$sum'=>'$isNew'
								),
								"visitatori"=>array(
										'$sum'=>1
								)
						)
				),
				array(
						'$sort'=>array(
								"_id.date.year"=>1,
								"_id.date.month"=>1,
								"_id.date.day"=>1
						)
				)
		);
		return $rval;
	}
	
	public static function getDailyVisualizationPipelineByStartAndEnd($startDate,$endDate){
		$rval = array(
				array(
						'$project'=>array(
								'tdate'=>array(
									'$add'=>array(
										'$date',60*60*1000
									)
								),
								"statType"=>'$statType',
								'user'=>'$user',
						)
				),
				array(
						'$match'=>array(
								'statType'=>StatisticModel::STAT_TYPE_PAGE,
								'tdate'=>array(
// 										'$gte'=>new MongoDate($startDate),
// 										'$lte'=>new MongoDate($endDate)
										'$gte'=>new MongoDB\BSON\UTCDateTime($startDate * 1000),
										'$lte'=>new MongoDB\BSON\UTCDateTime($endDate * 1000)
								)
						)
				),
				array(
						'$group'=>array(
								"_id"=>array(
										'date'=>array(
												"day"=>array('$dayOfMonth'=>'$tdate'),
												"month"=>array('$month'=>'$tdate'),
												"year"=>array('$year'=>'$tdate')
										),
										'user'=>'$user.id',
								),
								"visualizzazioni"=>array(
										'$sum'=>1
								),
								"isNew"=>array(
										'$sum'=>array(
												'$cond'=>array(
														array('$eq'=>array('$user.isNew',true)),
														1,
														0
												)
										)
								)
						)
				),
				array(
						'$group'=>array(
								"_id"=>array(
										'date'=>'$_id.date'
								),
								"visualizzazioni"=>array(
										'$sum'=>'$visualizzazioni'
								),
								"unici"=>array(
										'$sum'=>'$isNew'
								),
								"visitatori"=>array(
										'$sum'=>1
								)
						)
				),
				array(
						'$sort'=>array(
								"_id.date.year"=>1,
								"_id.date.month"=>1,
								"_id.date.day"=>1
						)
				)
		);
		return $rval;
	}
	
	public static function getMonthlyVisualizationPipeline($startDate){
		$rval = array(
				array(
						'$match'=>array(
								'statType'=>StatisticModel::STAT_TYPE_PAGE,
								'date'=>array(
// 										'$gte'=>new MongoDate($startDate)
										'$gte'=>new MongoDB\BSON\UTCDateTime($startDate * 1000)
								)
						)
				),
				array(
						'$group'=>array(
								"_id"=>array(
										'date'=>array(
												"month"=>array('$month'=>'$date'),
												"year"=>array('$year'=>'$date')
										),
										'user'=>'$user.id',
								),
								"visualizzazioni"=>array(
										'$sum'=>1
								),
								"isNew"=>array(
										'$sum'=>array(
												'$cond'=>array(
														array('$eq'=>array('$user.isNew',true)),
														1,
														0
												)
										)
								)
						)
				),
				array(
						'$group'=>array(
								"_id"=>array(
										'date'=>'$_id.date'
								),
								"visualizzazioni"=>array(
										'$sum'=>'$visualizzazioni'
								),
								"unici"=>array(
										'$sum'=>'$isNew'
								),
								"visitatori"=>array(
										'$sum'=>1
								)
						)
				),
				array(
						'$sort'=>array(
								"_id.date.year"=>1,
								"_id.date.month"=>1
						)
				)
		);
		return $rval;
	}
	
	
	/**
	 * Il risultato di questa pipeline restituisce un oggetto con _id.banner contenente l'id del banner e visualizzazioni contenente il numero
	 * di visualizzazioni per oggi ordinati in modo crescente per visualizzazioni
	 * @param unknown $position
	 * @return multitype:multitype:multitype:number   multitype:multitype:unknown number multitype:MongoDate    multitype:multitype:multitype:number  multitype:multitype:string
	 */
	public static function getTodaysBannerVisualizationPipeline($position){
		$rval = array(
				array(
						'$match'=>array(
								'statType'=>StatisticModel::STAT_TYPE_BANNER_IMPRESSION,
								'content.position'=>$position,
// 								'date'=>array( '$gte'=>new MongoDate(strtotime("today")) )
								'date'=>array( '$gte'=>new MongoDB\BSON\UTCDateTime(strtotime("today CET") * 1000) )
						)
				),
				array(
						'$group'=>array(
								"_id"=>array(
										'banner'=>'$content.banner',
								),
								"visualizzazioni"=>array(
										'$sum'=>1
								)
						)
				),
				array(
						'$sort'=>array(
								"visualizzazioni"=>1
						)
				)
		);
		return $rval;
	}
	
	/**
	 * Il risultato di questa pipeline restituisce un oggetto con _id.banner contenente l'id del banner e visualizzazioni contenente il numero
	 * di visualizzazioni per oggi ordinati in modo crescente per visualizzazioni
	 * @param unknown $position
	 * @return multitype:multitype:multitype:number   multitype:multitype:unknown number multitype:MongoDate    multitype:multitype:multitype:number  multitype:multitype:string
	 */
	public static function getMostViewedOfLastDays($startDate,$limit = 5){
		$rval = array(
				array(
						'$match'=>array(
								'statType'=>StatisticModel::STAT_TYPE_NOTIZIA,
								'date'=>array(
// 										'$gte'=>new MongoDate($startDate)
										'$gte'=>new MongoDB\BSON\UTCDateTime($startDate * 1000)
								)
						)
				),
				array(
						'$group'=>array(
								"_id"=>array(
										'notizia'=>'$content.notizia',
								),
								"visualizzazioni"=>array(
										'$sum'=>1
								)
						)
				),
				array(
						'$sort'=>array(
								"visualizzazioni"=>-1
						)
				),
				array(
						'$limit'=>$limit
				)
		);
		return $rval;
	}
	
}

?>