bbp_parse_query( WP_Query $posts_query )

function bbp_parse_query( $posts_query ) {

	// Bail if $posts_query is not the main loop
	if ( ! $posts_query->is_main_query() )
		return;

	// Bail if filters are suppressed on this query
	if ( true === $posts_query->get( 'suppress_filters' ) )
		return;

	// Bail if in admin
	if ( is_admin() )
		return;

	// Get query variables
	$bbp_view = $posts_query->get( bbp_get_view_rewrite_id() );
	$bbp_user = $posts_query->get( bbp_get_user_rewrite_id() );
	$is_edit  = $posts_query->get( bbp_get_edit_rewrite_id() );

	// It is a user page - We'll also check if it is user edit
	if ( !empty( $bbp_user ) ) {

		/** Find User *********************************************************/

		// Setup the default user variable
		$the_user = false;

		// If using pretty permalinks, always use slug
		if ( get_option( 'permalink_structure' ) ) {
			$the_user = get_user_by( 'slug', $bbp_user );

		// If not using pretty permalinks, always use numeric ID
		} elseif ( is_numeric( $bbp_user ) ) {
			$the_user = get_user_by( 'id', $bbp_user );
		}

		// 404 and bail if user does not have a profile
		if ( empty( $the_user->ID ) || ! bbp_user_has_profile( $the_user->ID ) ) {
			$posts_query->set_404();
			return;
		}

		/** User Exists *******************************************************/

		$is_favs    = $posts_query->get( bbp_get_user_favorites_rewrite_id()     );
		$is_subs    = $posts_query->get( bbp_get_user_subscriptions_rewrite_id() );
		$is_topics  = $posts_query->get( bbp_get_user_topics_rewrite_id()        );
		$is_replies = $posts_query->get( bbp_get_user_replies_rewrite_id()       );

		// View or edit?
		if ( !empty( $is_edit ) ) {

			// We are editing a profile
			$posts_query->bbp_is_single_user_edit = true;

			// Load the core WordPress contact methods
			if ( !function_exists( '_wp_get_user_contactmethods' ) ) {
				include_once( ABSPATH . 'wp-includes/registration.php' );
			}

			// Load the edit_user functions
			if ( !function_exists( 'edit_user' ) ) {
				require_once( ABSPATH . 'wp-admin/includes/user.php' );
			}

			// Load the grant/revoke super admin functions
			if ( is_multisite() && !function_exists( 'revoke_super_admin' ) ) {
				require_once( ABSPATH . 'wp-admin/includes/ms.php' );
			}

			// Editing a user
			$posts_query->bbp_is_edit = true;

		// User favorites
		} elseif ( ! empty( $is_favs ) ) {
			$posts_query->bbp_is_single_user_favs = true;

		// User subscriptions
		} elseif ( ! empty( $is_subs ) ) {
			$posts_query->bbp_is_single_user_subs = true;

		// User topics
		} elseif ( ! empty( $is_topics ) ) {
			$posts_query->bbp_is_single_user_topics = true;

		// User topics
		} elseif ( ! empty( $is_replies ) ) {
			$posts_query->bbp_is_single_user_replies = true;

		// User profile
		} else {
			$posts_query->bbp_is_single_user_profile = true;
		}

		// Looking at a single user
		$posts_query->bbp_is_single_user = true;

		// Make sure 404 is not set
		$posts_query->is_404  = false;

		// Correct is_home variable
		$posts_query->is_home = false;

		// User is looking at their own profile
		if ( get_current_user_id() === $the_user->ID ) {
			$posts_query->bbp_is_single_user_home = true;
		}

		// Set bbp_user_id for future reference
		$posts_query->set( 'bbp_user_id', $the_user->ID );

		// Set author_name as current user's nicename to get correct posts
		$posts_query->set( 'author_name', $the_user->user_nicename );

		// Set the displayed user global to this user
		bbpress()->displayed_user = $the_user;

	// View Page
	} elseif ( !empty( $bbp_view ) ) {

		// Check if the view exists by checking if there are query args are set
		$view_args = bbp_get_view_query_args( $bbp_view );

		// Bail if view args is false (view isn't registered)
		if ( false === $view_args ) {
			$posts_query->set_404();
			return;
		}

		// Correct is_home variable
		$posts_query->is_home     = false;

		// We are in a custom topic view
		$posts_query->bbp_is_view = true;

	// Search Page
	} elseif ( isset( $posts_query->query_vars[ bbp_get_search_rewrite_id() ] ) ) {

		// Check if there are search query args set
		$search_terms = bbp_get_search_terms();
		if ( !empty( $search_terms ) )
			$posts_query->bbp_search_terms = $search_terms;

		// Correct is_home variable
		$posts_query->is_home = false;

		// We are in a search query
		$posts_query->bbp_is_search = true;

	// Forum/Topic/Reply Edit Page
	} elseif ( !empty( $is_edit ) ) {

		// Get the post type from the main query loop
		$post_type = $posts_query->get( 'post_type' );

		// Check which post_type we are editing, if any
		if ( !empty( $post_type ) ) {
			switch( $post_type ) {

				// We are editing a forum
				case bbp_get_forum_post_type() :
					$posts_query->bbp_is_forum_edit = true;
					$posts_query->bbp_is_edit       = true;
					break;

				// We are editing a topic
				case bbp_get_topic_post_type() :
					$posts_query->bbp_is_topic_edit = true;
					$posts_query->bbp_is_edit       = true;
					break;

				// We are editing a reply
				case bbp_get_reply_post_type() :
					$posts_query->bbp_is_reply_edit = true;
					$posts_query->bbp_is_edit       = true;
					break;
			}

		// We are editing a topic tag
		} elseif ( bbp_is_topic_tag() ) {
			$posts_query->bbp_is_topic_tag_edit = true;
			$posts_query->bbp_is_edit           = true;
		}

		// We save post revisions on our own
		remove_action( 'pre_post_update', 'wp_save_post_revision' );

	// Topic tag page
	} elseif ( bbp_is_topic_tag() ) {
		$posts_query->set( 'bbp_topic_tag',  get_query_var( 'term' )   );
		$posts_query->set( 'post_type',      bbp_get_topic_post_type() );
		$posts_query->set( 'posts_per_page', bbp_get_topics_per_page() );

	// Do topics on forums root
	} elseif ( is_post_type_archive( array( bbp_get_forum_post_type(), bbp_get_topic_post_type() ) ) && ( 'topics' === bbp_show_on_root() ) ) {
		$posts_query->bbp_show_topics_on_root = true;
	}
}