<?php

class iCalendar extends Plugin
{
	const VERSION = '1.0';
	
	public function info()
	{
		return array(
			'name' => 'iCalendar', 
			'url' => 'http://robinadr.com/projects/icalendar', 
			'author' => 'rob1n', 
			'authorurl' => 'http://robinadr.com/', 
			'version' => self::VERSION, 
			'description' => 'Provides an iCalendar feed of events on your blog that you can subscribe to in Google Calendar, iCal, or other calendar software.', 
			'license' => 'GPL 2.0'
		);
	}
	
	public function filter_rewrite_rules( $rules )
	{
		$rules[] = RewriteRule::create_url_rule( '"icalendar"', 'iCalendar', 'calendar' );
		return $rules;
	}
	
	public function act( $action )
	{
		switch ( $action ) {
			case 'calendar' :
				self::calendar();
			break;
		}
	}
	
	public function calendar()
	{
		require_once dirname( __FILE__ ) . '/bennu/bennu.inc.php';
		
		$ical = new iCalendar;
		
		$posts = Posts::get( array( 'content_type' => 'entry', 'status' => Post::status( 'published' ), 'nolimit' => true, 'orderby' => 'date ASC' ) );
		
		foreach ( $posts as $post ) {
			$e = new iCalendar_event;
			
			$e->add_property( 'uid', $post->guid );
			$e->add_property( 'summary', 'New Post: ' . $post->title );
			$e->add_property( 'description', $post->content );
			$e->add_property( 'attach', $post->permalink );
			
			$e->add_property( 'dtstart', $post->pubdate );
			$e->add_property( 'dtend', $post->pubdate );
			
			$ical->add_component( $e );
			unset( $e );
		}
		
		unset( $posts );
		
		$pages = Posts::get( array( 'content_type' => 'page', 'status' => Post::status( 'published' ), 'nolimit' => true, 'orderby' => 'date ASC' ) );
		
		foreach ( $pages as $post ) {
			$e = new iCalendar_event;
			
			$e->add_property( 'uid', $post->guid );
			$e->add_property( 'summary', 'New Page: ' . $post->title );
			$e->add_property( 'description', $post->content );
			$e->add_property( 'attach', $post->permalink );
			
			$e->add_property( 'dtstart', $post->pubdate );
			$e->add_property( 'dtend', $post->pubdate );
			
			$ical->add_component( $e );
			unset( $e );
		}
		
		unset( $pages );
		
		$comments = Comments::get( array( 'status' => Comment::STATUS_APPROVED ) );
		
		foreach ( $comments as $comment ) {
			$e = new iCalendar_event;
			
			$e->add_property( 'summary', 'New Comment on ' . Post::get( array( 'id' => $comemnt->post_id ) );
			$e->add_property( 'description', 'Comment by ' . $comment->name . ' (' . $comment->email . ' / ' . $comment->url . ' / ' . $comment->ip . "\n\n" . $comment->content );
			$e->add_property( 'attach', $comment->permalink );
			
			$e->add_property( 'dtstart', $comment->pubdate );
			$e->add_property( 'dtend', $comment->pubdate );
			
			$ical->add_component( $e );
			unset( $e );
		}
		
		unset( $comments );
		
		ob_clean();
		
		header( 'Content-Type: text/calendar' );
		
		echo $ical->serialize();
	}
}

?>