<?php

class EventCinema extends PhpObject
{
	//DB
	const DB = 'db.json';
	private $asMovies;
	
	//Remote
	const EVENT_URL = 'https://www.eventcinemas.co.nz';
	const CINEMA_ID = 502;
	const PROM_LINKS = array(	self::EVENT_URL.'/Promotions/MemberMovieOfTheWeek#cinemas='.self::CINEMA_ID,
								self::EVENT_URL.'/Promotions/MembersMovieOfTheWeek#cinemas='.self::CINEMA_ID);
	
	const LASTCHANCE_LINK = self::EVENT_URL.'/Promotions/LastChanceFilms#cinemas='.self::CINEMA_ID;
	//https://www.eventcinemas.co.nz/Cinemas/GetSessions?cinemaIds=502&date=2017-07-04
	
	public function __construct()
	{
		parent::__construct();
		$this->loadMoviesFromDb();
		
		//Movie of the week is overwriting as it is cheaper than last chance films
		$this->addNewMovies();
	}
	
	private function loadMoviesFromDb()
	{
		$this->asMovies = array();
		if(file_exists(self::DB))
		{
			$sContent = file_get_contents(self::DB);
			if($sContent != '') $this->asMovies = json_decode($sContent, true);
		}
	}
	
	private function saveMovieToDb()
	{
		$sContent= json_encode($this->asMovies);
		file_put_contents(self::DB, $sContent);
	}
	
	private function getCurl($sUrl, $bHeader=false, $asPostData=array())
	{
		$oCurl = curl_init();
		
		curl_setopt($oCurl, CURLOPT_URL, $sUrl);
		curl_setopt($oCurl, CURLOPT_HEADER, $bHeader);
		if(!empty($asPostData))
		{
			curl_setopt($oCurl, CURLOPT_POST, count($asPostData));
			curl_setopt($oCurl, CURLOPT_POSTFIELDS, $asPostData);
		}
		
		curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, true);
		
		//Fake browser
		curl_setopt($oCurl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
		//if($this->sReferer!='') curl_setopt($oCurl, CURLOPT_REFERER, $this->sReferer);
		curl_setopt($oCurl, CURLOPT_SSL_VERIFYPEER, false);
		//if($bHeader) curl_setopt($oCurl, CURLOPT_FOLLOWLOCATION, true);
		
		//Cookies
		//$sCookies = $this->getCookies();
		//if($sCookies!='') curl_setopt($oCurl, CURLOPT_COOKIE, $sCookies);
		$fCookieJar = tempnam('/tmp','cookie');
		curl_setopt($oCurl, CURLOPT_COOKIESESSION, true);
		curl_setopt($oCurl, CURLOPT_COOKIEJAR, $fCookieJar);
		curl_setopt($oCurl, CURLOPT_COOKIEFILE, $fCookieJar);
		
		$sContent = curl_exec($oCurl);
		
		curl_close($oCurl);
		//$this->sReferer = $sUrl;
		return $sContent;
	}
	
	private function addNewMovies()
	{
		$aoMovies = array_merge($this->getLastChanceFilms(), $this->getMovieOfTheWeek());
		foreach($aoMovies as $oMovie)
		{
			$asMovie = $oMovie->getMovieInfo();
			$sKey = $asMovie['promo'].'|'.$asMovie['title'];
			
			//Merge with DB
			if(!array_key_exists($sKey, $this->asMovies))
			{
				$this->asMovies[$sKey] = $asMovie;
			}
		}
		
		$this->saveMovieToDb();
	}
	
	private function getMovieOfTheWeek()
	{
		//Tests all URLs
		foreach(self::PROM_LINKS as $sLink)
		{
			$aoMovies = $this->getMovieListFromPage($sLink, 'Movie of the Week');
			if(!empty($aoMovies)) break;
			/*
			$oMovie = new Movie();
			$oXPath = $this->getXPath($sLink);
			
			//Get header object
			$oMovieSection = $oXPath->query('//*[@class="header-title"]//*[@class="featured-name arrow-top small"]');
			if($oMovieSection->length > 0)
			{
				$oHeader = $oMovieSection->item(0)->childNodes;
				$oMovie->setTitle($oHeader->item(3)->nodeValue);
				$aoDetails = $oHeader->item(5)->childNodes;
				$oMovie->setDates(mb_substr($aoDetails->item(1)->nodeValue, 6));
				$oMovie->setLink($sLink);
				$oMovie->setPromo('Movie of the Week');
				break;
			}
			*/
		}
		
		return $aoMovies;
	}
	
	private function getLastChanceFilms()
	{
		return $this->getMovieListFromPage(self::LASTCHANCE_LINK, 'Last Chance');
	}
	
	private function getMovieListFromPage($sUrl, $sPromo='')
	{
		$aoMovies = array();
		$oTimeZone = new DateTimeZone('Pacific/Auckland');
		
		$oXPath = $this->getXPath($sUrl);
		$oMoviesNodeList = $oXPath->query('//*[@class="movie-data"]');
		if($oMoviesNodeList->length > 0)
		{
			$oMovieNode = $oMoviesNodeList->item(0);
			$asMovies = json_decode($oMovieNode->getAttribute('data-movies'), true);
			
			//Specific start/end fields
			$oFrom	= new DateTime(substr($oMovieNode->getAttribute('data-fromdate'), 0, 10), $oTimeZone);
			$oTo	= new DateTime(substr($oMovieNode->getAttribute('data-todate'), 0, 10), $oTimeZone);
			
			//Avalaible dates (fallback)
			$asDates = json_decode($oMovieNode->getAttribute('data-dates'), true);
			foreach($asDates as $sDate)
			{
				$oDate = new DateTime($sDate, $oTimeZone);
				if($oDate < $oFrom) $oFrom = $oDate;
				if($oDate > $oTo) $oTo = $oDate;
			}
			
			$sFrom = $oFrom->format("d/m");
			$sTo = $oTo->format("d/m");
			
			foreach ($asMovies as $asMovie)
			{
				if(!in_array(self::CINEMA_ID, $asMovie['CinemaIds'])) continue;
				
				$oMovie = new Movie($asMovie['Id']);
				$oMovie->setTitle($asMovie['Name']);
				$oMovie->setDates($sFrom.' - '.$sTo);
				$oMovie->setLink(self::EVENT_URL.$asMovie['MovieUrl']);
				$oMovie->setPromo($sPromo);
				
				$aoMovies[] = $oMovie;
			}
		}
		
		return $aoMovies;
	}
	
	private function getXPath($sLink)
	{
		//Get Event Cinema Page
		$sContent = $this->getCurl($sLink);
		
		//Build DOM
		$oDom = new DOMDocument();
		@$oDom->loadHTML($sContent);
		$oXPath = new DOMXPath($oDom);
		
		return $oXPath;
	}
	
	public function getRss()
	{
		$asDesc = array
		(
				'title'=>'Rarbg RSS Feed',
				'link'=>'',
				'copyright'=>'Powered by Franzz. RSS Feed Generator under GPLv3 License',
				'description'=>'Rarbg RSS Feed',
				'language'=>'en',
				'webmaster_mail'=>'franzz@gmail.com'
		);
		$oFeed = new Feed($asDesc);
		
		foreach($this->asMovies as $asMovie)
		{
			$sPromo = array_key_exists('promo', $asMovie)?$asMovie['promo']:'Movies';
			
			$asItem = array();
			$asItem['title'] = $asMovie['title'];
			$asItem['link'] = $asMovie['link'];
			$asItem['guid'] = $asMovie['title'];
			$asItem['category'] = $sPromo;
			$asItem['pub_date'] = $asMovie['date'];
			$asItem['author'] = 'Event Cinema - Queen Street';
			$asItem['description'] = $sPromo.' - '.$asMovie['dates'];
			
			$oFeed->addItem($asItem);
		}
		
		return $oFeed->getFeed();
	}
}