bp_blogs_setup_activity_loop_globals( object $activity )

function bp_blogs_setup_activity_loop_globals( $activity ) {
	if ( ! is_object( $activity ) ) {
		return;
	}

	// The activity type does not support comments or replies ? stop now!
	if ( ! bp_activity_type_supports( $activity->type, 'post-type-comment-reply' ) ) {
		return;
	}

	if ( empty( $activity->id ) ) {
		return;
	}

	// If we've already done this before, stop now!
	if ( isset( buddypress()->blogs->allow_comments[ $activity->id ] ) ) {
		return;
	}

	$allow_comments = bp_blogs_comments_open( $activity );
	$thread_depth   = bp_blogs_get_blogmeta( $activity->item_id, 'thread_comments_depth' );
	$moderation     = bp_blogs_get_blogmeta( $activity->item_id, 'comment_moderation' );

	// Initialize a local object so we won't have to query this again in the
	// comment loop.
	if ( empty( buddypress()->blogs->allow_comments ) ) {
		buddypress()->blogs->allow_comments = array();
	}
	if ( empty( buddypress()->blogs->thread_depth ) ) {
		buddypress()->blogs->thread_depth   = array();
	}
	if ( empty( buddypress()->blogs->comment_moderation ) ) {
		buddypress()->blogs->comment_moderation = array();
	}

	/*
	 * Cache comment settings in the buddypress() singleton for later reference.
	 *
	 * See bp_blogs_disable_activity_commenting() / bp_blogs_can_comment_reply().
	 *
	 * thread_depth is keyed by activity ID instead of blog ID because when we're
	 * in an actvity comment loop, we don't have access to the blog ID...
	 *
	 * Should probably object cache these values instead...
	 */
	buddypress()->blogs->allow_comments[ $activity->id ]     = $allow_comments;
	buddypress()->blogs->thread_depth[ $activity->id ]       = $thread_depth;
	buddypress()->blogs->comment_moderation[ $activity->id ] = $moderation;
}