bbpress-unread-posts/plugin.php at master · ludonkey/bbpress-unread-posts · GitHub

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<?php
	/*
	Plugin Name: bbPress Unread Posts
	Description: Displays an icon next to each thread if there are unread posts for the current user in it.
	Version: 1.0
	Author: destroflyer
	*/

	add_action("init", "bbp_unread_posts_Initialize");

	function bbp_unread_posts_Initialize(){
		wp_enqueue_style("bbpress_unread_posts_Style", plugins_url("style.css", __FILE__));
		if(is_user_logged_in()){
			add_action("bbp_theme_before_topic_title", "bbp_unread_posts_PerformTopicSpecificActions");
			add_action("bbp_theme_before_topic_title", "bbp_unread_posts_IconWrapperBegin");
			add_action("bbp_theme_before_forum_title", "bbp_unreadforum_posts_IconWrapperBegin");
			add_action("bbp_theme_after_topic_meta", "bbp_unread_posts_IconWrapperEnd");
			add_action("bbp_theme_after_forum_title", "bbp_unreadforum_posts_IconWrapperEnd");
			add_action("bbp_template_after_single_topic", "bbp_unread_posts_OnTopicVisit");
			add_filter("bbp_get_topic_pagination_count", "bbp_unread_posts_MarkAllTopicsAsReadButtonFilter");
		}
	}

	function bbp_unreadforum_posts_IconWrapperEnd(){
		echo '
			</div>
		';
	}

	function bbp_unreadforum_posts_IconWrapperBegin(){
		$isUnreadTopic = false;
		$forum_id = bbp_unread_posts_GetCurrentLoopedForumID();
		$params["post_parent"] = $forum_id;
		$params["posts_per_page"] = 150;
		bbp_has_topics( $params );
		while ( bbp_topics() ) : bbp_the_topic();
			$topicID = bbp_unread_posts_GetCurrentLoopedTopicID();
			$topicLastActiveTime = bbp_convert_date(get_post_meta($topicID, '_bbp_last_active_time', true));
			$lastVisitTime = get_post_meta($topicID, bbp_unread_posts_getLastVisitMetaKey(), true);
			$isUnreadTopic = ($topicLastActiveTime > $lastVisitTime);
			if ($isUnreadTopic) {
				break;
			}
		endwhile;
		echo '
			<div class="bbpresss_unread_posts_icon">
				<img src="' . plugins_url("images/" . ($isUnreadTopic?"folder_new.gif":"folder.gif"), __FILE__) . '">
			</div>
			<div style="display:table-cell;">
		';
	}

	function bbp_unread_posts_PerformTopicSpecificActions(){
		if(bbp_unread_posts_IsMarkAllTopicsAsReadRequested()){
    		$topicID = bbp_unread_posts_GetCurrentLoopedTopicID();
    		bbp_unread_posts_UpdateLastTopicVisit($topicID);
		}
	}

	function bbp_unread_posts_IconWrapperBegin(){
    	$topicID = bbp_unread_posts_GetCurrentLoopedTopicID();
		$topicLastActiveTime = bbp_convert_date(get_post_meta($topicID, '_bbp_last_active_time', true));
		$lastVisitTime = get_post_meta($topicID, bbp_unread_posts_getLastVisitMetaKey(), true);
		$isUnreadTopic = ($topicLastActiveTime > $lastVisitTime);
		echo '
			<div class="bbpresss_unread_posts_icon">
				<a href="' . bbp_get_topic_last_reply_url($topicID) . '">
					<img src="' . plugins_url("images/" . ($isUnreadTopic?"folder_new.gif":"folder.gif"), __FILE__) . '">
				</a>
			</div>
			<div style="display:table-cell;">
		';
	}

	function bbp_unread_posts_GetCurrentLoopedTopicID(){
		return bbpress()->topic_query->post->ID;
	}

	function bbp_unread_posts_IconWrapperEnd(){
		echo '
			</div>
		';
	}

	function bbp_unread_posts_OnTopicVisit(){
		$topicID = bbpress()->reply_query->query["post_parent"];
		bbp_unread_posts_UpdateLastTopicVisit($topicID);
	}

	function bbp_unread_posts_UpdateLastTopicVisit($topicID){
    	update_post_meta($topicID, bbp_unread_posts_getLastVisitMetaKey(), time());
	}

	function bbp_unread_posts_getLastVisitMetaKey(){
		return "bbpress_unread_posts_last_visit_" . bbpress()->current_user->id;
	}

	function bbp_unread_posts_MarkAllTopicsAsReadButtonFilter($content){
		global $bbp_unread_posts_paginationIndex;
		if(bbp_unread_posts_IsForumPage()){
			if(!isset($bbp_unread_posts_paginationIndex)){
				$bbp_unread_posts_paginationIndex = -1;
			}
			$bbp_unread_posts_paginationIndex++;
			if($bbp_unread_posts_paginationIndex == 1){
				$html = '
					<form action="" method="post" class="bbpress_unread_posts_mark_as_read_button_container">
						<input type="hidden" name="bbp_unread_posts_markAllTopicAsRead" value="1"/>
				';
				if(bbp_unread_posts_IsMarkAllTopicsAsReadRequested()){
					$html .= '
						<span style="font-weight:bold;">Marked all topics as read</span>
					';
				}
				else{
					$html .= '
						<input type="submit" value="Mark all topics as read"/>
					';
				}
				$html .= '
					</form>
				';
				$content = $html . $content;
			}
		}
		return $content;
	}

	function bbp_unread_posts_IsForumPage(){
		return isset(bbpress()->topic_query->posts);
	}

	function bbp_unread_posts_IsMarkAllTopicsAsReadRequested(){
		return isset($_POST["bbp_unread_posts_markAllTopicAsRead"]);
	}
?>