<?php
class video extends google_data
{
	public	$author					= null;
	public	$title					= null;
	public	$description			= null;
	public	$keywords				= null;
	public	$player_url				= null;
	public	$duration				= null;
	public	$duration_str			= null;
	public	$position				= null;
	public	$view_count				= 0;
	public	$fav_count				= 0;
	public	$rating_min				= 0;
	public	$rating_max				= 0;
	public	$num_raters				= 0;
	public	$avg_rate				= 0;
	public	$comments_feed			= null;
	public	$comment_count			= 0;
	public	$video_responses_feed	= null;
	public	$related_videos_feed	= null;
	public	$thumbnails				= null;
	public	$comments				= null;

	function __construct($xpath, $node)
	{
		$this->load($xpath, $node);
	}
	
	public function to_time($seconds)
	{
		return date(($seconds >= 3600 ? "H:i:s" : "i:s"), mktime(0, 0, $seconds));
	}
	
	public function load($xpath, $node)
	{
		$this->author 		= $this->get_node_value($xpath, "atom:author//atom:name",	 		$node, "");
		$this->title		= $this->get_node_value($xpath, "media:group//media:title", 		$node, "");
		$this->description	= $this->get_node_value($xpath, "media:group//media:description",	$node, "");
		$this->keywords		= $this->get_node_value($xpath, "media:group//media:keywords", 		$node, "");
		$this->player_url	= $this->get_node_attr($xpath, 	"media:group//media:player", 		$node, "url", "");
		$this->duration		= $this->get_node_attr($xpath, 	"media:group//yt:duration", 		$node, "seconds", 0);
		$this->duration_str	= $this->to_time($this->duration);
		$this->load_thumbnails($xpath, $node);
		$this->load_links($xpath, $node);
		$this->load_position($xpath, $node);
		$this->load_statistics($xpath, $node);
		$this->load_rating($xpath, $node);
		$this->load_comments($xpath, $node);
	}
	
	private function load_thumbnails($xpath, $node)
	{
		unset($this->thumbnails);
		$thumbnails = $xpath->query("media:group//media:thumbnail", $node);
		if ($thumbnails)
		{
			$this->thumbnails = array();
			foreach ($thumbnails as $thumbnail)
			{
				array_push($this->thumbnails, array(
					"url" 		=> $thumbnail->getAttribute("url"),
					"width" 	=> $thumbnail->getAttribute("width"),
					"height" 	=> $thumbnail->getAttribute("height")
				));
			}
		}
	}
	
	private function load_links($xpath, $node)
	{
		$this->video_responses_feed	= $this->load_link($xpath, $node, "video.responses");
		$this->related_videos_feed	= $this->load_link($xpath, $node, "video.related");
	}
	
	private function load_link($xpath, $node, $key)
	{
		return $this->get_node_attr($xpath, "atom:link[@rel='" . $key . "']", $node, "href", null);		
	}
	
	private function load_position($xpath, $node)
	{
		$this->position = $this->get_node_value($xpath, "georss:where/gml:Point/gml:Pos", $node, "");
		if ($this->position != "")
		{
			$this->position = explode(" ", $this->position);
		}
	}
	
	private function load_statistics($xpath, $node)
	{
		$stats = $this->get_node($xpath, "yt:statistics", $node);
		if ($stats)
		{
			$this->view_count	= intval($stats->getAttribute("viewCount"));
			$this->fav_count	= intval($stats->getAttribute("favoriteCount"));
		}
	}

	private function load_rating($xpath, $node)
	{
		$rating = $this->get_node($xpath, "gd:rating", $node);
		if ($rating)
		{
			$this->rating_min	= intval($rating->getAttribute("min"));
			$this->rating_max	= intval($rating->getAttribute("max"));
			$this->num_raters	= intval($rating->getAttribute("numRaters"));
			$this->avg_rate		= floatval($rating->getAttribute("average"));
		}
	}
	
	private function load_comments($xpath, $node)
	{
		$comments = $this->get_node($xpath, "gd:comments//gd:feedLink", $node);
		if ($comments)
		{
			$this->comments_feed 	= $comments->getAttribute("href");
			$this->comment_count 	= intval($comments->getAttribute("countHint"));
			$this->comments			= new comments($this->comments_feed);
		}
	}
}
?>