/wp-content/plugins/bbpress/includes/topics/functions.php

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<?php

/**
 * bbPress Topic Functions
 *
 * @package bbPress
 * @subpackage Functions
 */

// Exit if accessed directly
if ( !defined( 'ABSPATH' ) ) exit;

/** Insert ********************************************************************/

/**
 * A wrapper for wp_insert_post() that also includes the necessary meta values
 * for the topic to function properly.
 *
 * @since bbPress (r3349)
 *
 * @uses bbp_parse_args()
 * @uses bbp_get_topic_post_type()
 * @uses wp_insert_post()
 * @uses update_post_meta()
 *
 * @param array $topic_data Forum post data
 * @param arrap $topic_meta Forum meta data
 */
function bbp_insert_topic( $topic_data = array(), $topic_meta = array() ) {

	// Parse arguments against default values
	$topic_data = bbp_parse_args( $topic_data, array(
		'post_parent'    => 0, // forum ID
		'post_status'    => bbp_get_public_status_id(),
		'post_type'      => bbp_get_topic_post_type(),
		'post_author'    => bbp_get_current_user_id(),
		'post_password'  => '',
		'post_content'   => '',
		'post_title'     => '',
		'comment_status' => 'closed',
		'menu_order'     => 0,
	), 'insert_topic' );

	// Insert topic
	$topic_id   = wp_insert_post( $topic_data );

	// Bail if no topic was added
	if ( empty( $topic_id ) )
		return false;

	// Parse arguments against default values
	$topic_meta = bbp_parse_args( $topic_meta, array(
		'author_ip'          => bbp_current_author_ip(),
		'forum_id'           => 0,
		'topic_id'           => $topic_id,
		'voice_count'        => 1,
		'reply_count'        => 0,
		'reply_count_hidden' => 0,
		'last_reply_id'      => 0,
		'last_active_id'     => $topic_id,
		'last_active_time'   => get_post_field( 'post_date', $topic_id, 'db' ),
	), 'insert_topic_meta' );

	// Insert topic meta
	foreach ( $topic_meta as $meta_key => $meta_value )
		update_post_meta( $topic_id, '_bbp_' . $meta_key, $meta_value );

	// Update the forum
	$forum_id = bbp_get_topic_forum_id( $topic_id );
	if ( !empty( $forum_id ) )
		bbp_update_forum( array( 'forum_id' => $forum_id ) );

	// Return new topic ID
	return $topic_id;
}

/** Post Form Handlers ********************************************************/

/**
 * Handles the front end topic submission
 *
 * @param string $action The requested action to compare this function to
 * @uses bbp_add_error() To add an error message
 * @uses bbp_verify_nonce_request() To verify the nonce and check the referer
 * @uses bbp_is_anonymous() To check if an anonymous post is being made
 * @uses current_user_can() To check if the current user can publish topic
 * @uses bbp_get_current_user_id() To get the current user id
 * @uses bbp_filter_anonymous_post_data() To filter anonymous data
 * @uses bbp_set_current_anonymous_user_data() To set the anonymous user cookies
 * @uses is_wp_error() To check if the value retrieved is a {@link WP_Error}
 * @uses esc_attr() For sanitization
 * @uses bbp_is_forum_category() To check if the forum is a category
 * @uses bbp_is_forum_closed() To check if the forum is closed
 * @uses bbp_is_forum_private() To check if the forum is private
 * @uses bbp_check_for_flood() To check for flooding
 * @uses bbp_check_for_duplicate() To check for duplicates
 * @uses bbp_get_topic_post_type() To get the topic post type
 * @uses remove_filter() To remove kses filters if needed
 * @uses apply_filters() Calls 'bbp_new_topic_pre_title' with the content
 * @uses apply_filters() Calls 'bbp_new_topic_pre_content' with the content
 * @uses bbPress::errors::get_error_codes() To get the {@link WP_Error} errors
 * @uses wp_insert_post() To insert the topic
 * @uses do_action() Calls 'bbp_new_topic' with the topic id, forum id,
 *                    anonymous data and reply author
 * @uses bbp_stick_topic() To stick or super stick the topic
 * @uses bbp_unstick_topic() To unstick the topic
 * @uses bbp_get_topic_permalink() To get the topic permalink
 * @uses wp_safe_redirect() To redirect to the topic link
 * @uses bbPress::errors::get_error_messages() To get the {@link WP_Error} error
 *                                              messages
 */
function bbp_new_topic_handler( $action = '' ) {

	// Bail if action is not bbp-new-topic
	if ( 'bbp-new-topic' !== $action )
		return;

	// Nonce check
	if ( ! bbp_verify_nonce_request( 'bbp-new-topic' ) ) {
		bbp_add_error( 'bbp_new_topic_nonce', __( '<strong>ERROR</strong>: Are you sure you wanted to do that?', 'bbpress' ) );
		return;
	}

	// Define local variable(s)
	$view_all = false;
	$forum_id = $topic_author = $anonymous_data = 0;
	$topic_title = $topic_content = '';
	$terms = array( bbp_get_topic_tag_tax_id() => array() );

	/** Topic Author **********************************************************/

	// User is anonymous
	if ( bbp_is_anonymous() ) {

		// Filter anonymous data
		$anonymous_data = bbp_filter_anonymous_post_data();

		// Anonymous data checks out, so set cookies, etc...
		if ( !empty( $anonymous_data ) && is_array( $anonymous_data ) ) {
			bbp_set_current_anonymous_user_data( $anonymous_data );
		}

	// User is logged in
	} else {

		// User cannot create topics
		if ( !current_user_can( 'publish_topics' ) ) {
			bbp_add_error( 'bbp_topic_permissions', __( '<strong>ERROR</strong>: You do not have permission to create new topics.', 'bbpress' ) );
			return;
		}

		// Topic author is current user
		$topic_author = bbp_get_current_user_id();
	}

	// Remove kses filters from title and content for capable users and if the nonce is verified
	if ( current_user_can( 'unfiltered_html' ) && !empty( $_POST['_bbp_unfiltered_html_topic'] ) && wp_create_nonce( 'bbp-unfiltered-html-topic_new' ) == $_POST['_bbp_unfiltered_html_topic'] ) {
		remove_filter( 'bbp_new_topic_pre_title',   'wp_filter_kses'      );
		remove_filter( 'bbp_new_topic_pre_content', 'bbp_encode_bad',  10 );
		remove_filter( 'bbp_new_topic_pre_content', 'bbp_filter_kses', 30 );
	}

	/** Topic Title ***********************************************************/

	if ( !empty( $_POST['bbp_topic_title'] ) )
		$topic_title = esc_attr( strip_tags( $_POST['bbp_topic_title'] ) );

	// Filter and sanitize
	$topic_title = apply_filters( 'bbp_new_topic_pre_title', $topic_title );

	// No topic title
	if ( empty( $topic_title ) )
		bbp_add_error( 'bbp_topic_title', __( '<strong>ERROR</strong>: Your topic needs a title.', 'bbpress' ) );

	/** Topic Content *********************************************************/

	if ( !empty( $_POST['bbp_topic_content'] ) )
		$topic_content = $_POST['bbp_topic_content'];

	// Filter and sanitize
	$topic_content = apply_filters( 'bbp_new_topic_pre_content', $topic_content );

	// No topic content
	if ( empty( $topic_content ) )
		bbp_add_error( 'bbp_topic_content', __( '<strong>ERROR</strong>: Your topic cannot be empty.', 'bbpress' ) );

	/** Topic Forum ***********************************************************/

	// Forum id was not passed
	if ( empty( $_POST['bbp_forum_id'] ) ) {
		bbp_add_error( 'bbp_topic_forum_id', __( '<strong>ERROR</strong>: Forum ID is missing.', 'bbpress' ) );

	// Forum id was passed
	} elseif ( is_numeric( $_POST['bbp_forum_id'] ) ) {
		$forum_id = (int) $_POST['bbp_forum_id'];
	}

	// Forum exists
	if ( !empty( $forum_id ) ) {

		// Forum is a category
		if ( bbp_is_forum_category( $forum_id ) ) {
			bbp_add_error( 'bbp_edit_topic_forum_category', __( '<strong>ERROR</strong>: This forum is a category. No topics can be created in this forum.', 'bbpress' ) );

		// Forum is not a category
		} else {

			// Forum is closed and user cannot access
			if ( bbp_is_forum_closed( $forum_id ) && !current_user_can( 'edit_forum', $forum_id ) ) {
				bbp_add_error( 'bbp_edit_topic_forum_closed', __( '<strong>ERROR</strong>: This forum has been closed to new topics.', 'bbpress' ) );
			}

			// Forum is private and user cannot access
			if ( bbp_is_forum_private( $forum_id ) ) {
				if ( !current_user_can( 'read_private_forums' ) ) {
					bbp_add_error( 'bbp_edit_topic_forum_private', __( '<strong>ERROR</strong>: This forum is private and you do not have the capability to read or create new topics in it.', 'bbpress' ) );
				}

			// Forum is hidden and user cannot access
			} elseif ( bbp_is_forum_hidden( $forum_id ) ) {
				if ( !current_user_can( 'read_hidden_forums' ) ) {
					bbp_add_error( 'bbp_edit_topic_forum_hidden', __( '<strong>ERROR</strong>: This forum is hidden and you do not have the capability to read or create new topics in it.', 'bbpress' ) );
				}
			}
		}
	}

	/** Topic Flooding ********************************************************/

	if ( !bbp_check_for_flood( $anonymous_data, $topic_author ) )
		bbp_add_error( 'bbp_topic_flood', __( '<strong>ERROR</strong>: Slow down; you move too fast.', 'bbpress' ) );

	/** Topic Duplicate *******************************************************/

	if ( !bbp_check_for_duplicate( array( 'post_type' => bbp_get_topic_post_type(), 'post_author' => $topic_author, 'post_content' => $topic_content, 'anonymous_data' => $anonymous_data ) ) )
		bbp_add_error( 'bbp_topic_duplicate', __( '<strong>ERROR</strong>: Duplicate topic detected; it looks as though you&#8217;ve already said that!', 'bbpress' ) );

	/** Topic Blacklist *******************************************************/

	if ( !bbp_check_for_blacklist( $anonymous_data, $topic_author, $topic_title, $topic_content ) )
		bbp_add_error( 'bbp_topic_blacklist', __( '<strong>ERROR</strong>: Your topic cannot be created at this time.', 'bbpress' ) );

	/** Topic Status **********************************************************/

	// Maybe put into moderation
	if ( !bbp_check_for_moderation( $anonymous_data, $topic_author, $topic_title, $topic_content ) ) {
		$topic_status = bbp_get_pending_status_id();

	// Default to published
	} else {
		$topic_status = bbp_get_public_status_id();
	}

	/** Topic Tags ************************************************************/

	if ( bbp_allow_topic_tags() && !empty( $_POST['bbp_topic_tags'] ) ) {

		// Escape tag input
		$terms = esc_attr( strip_tags( $_POST['bbp_topic_tags'] ) );

		// Explode by comma
		if ( strstr( $terms, ',' ) ) {
			$terms = explode( ',', $terms );
		}

		// Add topic tag ID as main key
		$terms = array( bbp_get_topic_tag_tax_id() => $terms );
	}

	/** Additional Actions (Before Save) **************************************/

	do_action( 'bbp_new_topic_pre_extras', $forum_id );

	// Bail if errors
	if ( bbp_has_errors() )
		return;

	/** No Errors *************************************************************/

	// Add the content of the form to $topic_data as an array.
	// Just in time manipulation of topic data before being created
	$topic_data = apply_filters( 'bbp_new_topic_pre_insert', array(
		'post_author'    => $topic_author,
		'post_title'     => $topic_title,
		'post_content'   => $topic_content,
		'post_status'    => $topic_status,
		'post_parent'    => $forum_id,
		'post_type'      => bbp_get_topic_post_type(),
		'tax_input'      => $terms,
		'comment_status' => 'closed'
	) );

	// Insert topic
	$topic_id = wp_insert_post( $topic_data );

	/** No Errors *************************************************************/

	if ( !empty( $topic_id ) && !is_wp_error( $topic_id ) ) {

		/** Trash Check *******************************************************/

		// If the forum is trash, or the topic_status is switched to
		// trash, trash it properly
		if ( ( get_post_field( 'post_status', $forum_id ) == bbp_get_trash_status_id() ) || ( $topic_data['post_status'] == bbp_get_trash_status_id() ) ) {

			// Trash the reply
			wp_trash_post( $topic_id );

			// Force view=all
			$view_all = true;
		}

		/** Spam Check ********************************************************/

		// If reply or topic are spam, officially spam this reply
		if ( $topic_data['post_status'] == bbp_get_spam_status_id() ) {
			add_post_meta( $topic_id, '_bbp_spam_meta_status', bbp_get_public_status_id() );

			// Force view=all
			$view_all = true;
		}

		/** Update counts, etc... *********************************************/

		do_action( 'bbp_new_topic', $topic_id, $forum_id, $anonymous_data, $topic_author );

		/** Stickies **********************************************************/

		// Sticky check after 'bbp_new_topic' action so forum ID meta is set
		if ( !empty( $_POST['bbp_stick_topic'] ) && in_array( $_POST['bbp_stick_topic'], array( 'stick', 'super', 'unstick' ) ) ) {

			// What's the haps?
			switch ( $_POST['bbp_stick_topic'] ) {

				// Sticky in this forum
				case 'stick'   :
					bbp_stick_topic( $topic_id );
					break;

				// Super sticky in all forums
				case 'super'   :
					bbp_stick_topic( $topic_id, true );
					break;

				// We can avoid this as it is a new topic
				case 'unstick' :
				default        :
					break;
			}
		}

		/** Additional Actions (After Save) ***********************************/

		do_action( 'bbp_new_topic_post_extras', $topic_id );

		/** Redirect **********************************************************/

		// Redirect to
		$redirect_to = bbp_get_redirect_to();

		// Get the topic URL
		$redirect_url = bbp_get_topic_permalink( $topic_id, $redirect_to );

		// Add view all?
		if ( bbp_get_view_all() || !empty( $view_all ) ) {

			// User can moderate, so redirect to topic with view all set
			if ( current_user_can( 'moderate' ) ) {
				$redirect_url = bbp_add_view_all( $redirect_url );

			// User cannot moderate, so redirect to forum
			} else {
				$redirect_url = bbp_get_forum_permalink( $forum_id );
			}
		}

		// Allow to be filtered
		$redirect_url = apply_filters( 'bbp_new_topic_redirect_to', $redirect_url, $redirect_to, $topic_id );

		/** Successful Save ***************************************************/

		// Redirect back to new topic
		wp_safe_redirect( $redirect_url );

		// For good measure
		exit();

	// Errors
	} else {
		$append_error = ( is_wp_error( $topic_id ) && $topic_id->get_error_message() ) ? $topic_id->get_error_message() . ' ' : '';
		bbp_add_error( 'bbp_topic_error', __( '<strong>ERROR</strong>: The following problem(s) have been found with your topic:' . $append_error, 'bbpress' ) );
	}
}

/**
 * Handles the front end edit topic submission
 *
 * @param string $action The requested action to compare this function to
 * @uses bbp_add_error() To add an error message
 * @uses bbp_get_topic() To get the topic
 * @uses bbp_verify_nonce_request() To verify the nonce and check the request
 * @uses bbp_is_topic_anonymous() To check if topic is by an anonymous user
 * @uses current_user_can() To check if the current user can edit the topic
 * @uses bbp_filter_anonymous_post_data() To filter anonymous data
 * @uses is_wp_error() To check if the value retrieved is a {@link WP_Error}
 * @uses esc_attr() For sanitization
 * @uses bbp_is_forum_category() To check if the forum is a category
 * @uses bbp_is_forum_closed() To check if the forum is closed
 * @uses bbp_is_forum_private() To check if the forum is private
 * @uses remove_filter() To remove kses filters if needed
 * @uses apply_filters() Calls 'bbp_edit_topic_pre_title' with the title and
 *                        topic id
 * @uses apply_filters() Calls 'bbp_edit_topic_pre_content' with the content
 *                        and topic id
 * @uses bbPress::errors::get_error_codes() To get the {@link WP_Error} errors
 * @uses wp_save_post_revision() To save a topic revision
 * @uses bbp_update_topic_revision_log() To update the topic revision log
 * @uses bbp_stick_topic() To stick or super stick the topic
 * @uses bbp_unstick_topic() To unstick the topic
 * @uses wp_update_post() To update the topic
 * @uses do_action() Calls 'bbp_edit_topic' with the topic id, forum id,
 *                    anonymous data and reply author
 * @uses bbp_move_topic_handler() To handle movement of a topic from one forum
 *                                 to another
 * @uses bbp_get_topic_permalink() To get the topic permalink
 * @uses wp_safe_redirect() To redirect to the topic link
 * @uses bbPress::errors::get_error_messages() To get the {@link WP_Error} error
 *                                              messages
 */
function bbp_edit_topic_handler( $action = '' ) {

	// Bail if action is not bbp-edit-topic
	if ( 'bbp-edit-topic' !== $action )
		return;

	// Define local variable(s)
	$revisions_removed = false;
	$topic = $topic_id = $topic_author = $forum_id = $anonymous_data = 0;
	$topic_title = $topic_content = $topic_edit_reason = '';

	/** Topic *****************************************************************/

	// Topic id was not passed
	if ( empty( $_POST['bbp_topic_id'] ) ) {
		bbp_add_error( 'bbp_edit_topic_id', __( '<strong>ERROR</strong>: Topic ID not found.', 'bbpress' ) );
		return;

	// Topic id was passed
	} elseif ( is_numeric( $_POST['bbp_topic_id'] ) ) {
		$topic_id = (int) $_POST['bbp_topic_id'];
		$topic    = bbp_get_topic( $topic_id );
	}

	// Topic does not exist
	if ( empty( $topic ) ) {
		bbp_add_error( 'bbp_edit_topic_not_found', __( '<strong>ERROR</strong>: The topic you want to edit was not found.', 'bbpress' ) );
		return;

	// Topic exists
	} else {

		// Check users ability to create new topic
		if ( ! bbp_is_topic_anonymous( $topic_id ) ) {

			// User cannot edit this topic
			if ( !current_user_can( 'edit_topic', $topic_id ) ) {
				bbp_add_error( 'bbp_edit_topic_permissions', __( '<strong>ERROR</strong>: You do not have permission to edit that topic.', 'bbpress' ) );
			}

			// Set topic author
			$topic_author = bbp_get_topic_author_id( $topic_id );

		// It is an anonymous post
		} else {

			// Filter anonymous data
			$anonymous_data = bbp_filter_anonymous_post_data( array(), true );
		}
	}

	// Nonce check
	if ( ! bbp_verify_nonce_request( 'bbp-edit-topic_' . $topic_id ) ) {
		bbp_add_error( 'bbp_edit_topic_nonce', __( '<strong>ERROR</strong>: Are you sure you wanted to do that?', 'bbpress' ) );
		return;
	}

	// Remove kses filters from title and content for capable users and if the nonce is verified
	if ( current_user_can( 'unfiltered_html' ) && !empty( $_POST['_bbp_unfiltered_html_topic'] ) && ( wp_create_nonce( 'bbp-unfiltered-html-topic_' . $topic_id ) == $_POST['_bbp_unfiltered_html_topic'] ) ) {
		remove_filter( 'bbp_edit_topic_pre_title',   'wp_filter_kses'      );
		remove_filter( 'bbp_edit_topic_pre_content', 'bbp_encode_bad',  10 );
		remove_filter( 'bbp_edit_topic_pre_content', 'bbp_filter_kses', 30 );
	}

	/** Topic Forum ***********************************************************/

	// Forum id was not passed
	if ( empty( $_POST['bbp_forum_id'] ) ) {
		bbp_add_error( 'bbp_topic_forum_id', __( '<strong>ERROR</strong>: Forum ID is missing.', 'bbpress' ) );

	// Forum id was passed
	} elseif ( is_numeric( $_POST['bbp_forum_id'] ) ) {
		$forum_id = (int) $_POST['bbp_forum_id'];
	}

	// Current forum this topic is in
	$current_forum_id = bbp_get_topic_forum_id( $topic_id );

	// Forum exists
	if ( !empty( $forum_id ) && ( $forum_id !== $current_forum_id ) ) {

		// Forum is a category
		if ( bbp_is_forum_category( $forum_id ) ) {
			bbp_add_error( 'bbp_edit_topic_forum_category', __( '<strong>ERROR</strong>: This forum is a category. No topics can be created in it.', 'bbpress' ) );

		// Forum is not a category
		} else {

			// Forum is closed and user cannot access
			if ( bbp_is_forum_closed( $forum_id ) && !current_user_can( 'edit_forum', $forum_id ) ) {
				bbp_add_error( 'bbp_edit_topic_forum_closed', __( '<strong>ERROR</strong>: This forum has been closed to new topics.', 'bbpress' ) );
			}

			// Forum is private and user cannot access
			if ( bbp_is_forum_private( $forum_id ) ) {
				if ( !current_user_can( 'read_private_forums' ) ) {
					bbp_add_error( 'bbp_edit_topic_forum_private', __( '<strong>ERROR</strong>: This forum is private and you do not have the capability to read or create new topics in it.', 'bbpress' ) );
				}

			// Forum is hidden and user cannot access
			} elseif ( bbp_is_forum_hidden( $forum_id ) ) {
				if ( !current_user_can( 'read_hidden_forums' ) ) {
					bbp_add_error( 'bbp_edit_topic_forum_hidden', __( '<strong>ERROR</strong>: This forum is hidden and you do not have the capability to read or create new topics in it.', 'bbpress' ) );
				}
			}
		}
	}

	/** Topic Title ***********************************************************/

	if ( !empty( $_POST['bbp_topic_title'] ) )
		$topic_title = esc_attr( strip_tags( $_POST['bbp_topic_title'] ) );

	// Filter and sanitize
	$topic_title = apply_filters( 'bbp_edit_topic_pre_title', $topic_title, $topic_id );

	// No topic title
	if ( empty( $topic_title ) )
		bbp_add_error( 'bbp_edit_topic_title', __( '<strong>ERROR</strong>: Your topic needs a title.', 'bbpress' ) );

	/** Topic Content *********************************************************/

	if ( !empty( $_POST['bbp_topic_content'] ) )
		$topic_content = $_POST['bbp_topic_content'];

	// Filter and sanitize
	$topic_content = apply_filters( 'bbp_edit_topic_pre_content', $topic_content, $topic_id );

	// No topic content
	if ( empty( $topic_content ) )
		bbp_add_error( 'bbp_edit_topic_content', __( '<strong>ERROR</strong>: Your topic cannot be empty.', 'bbpress' ) );

	/** Topic Blacklist *******************************************************/

	if ( !bbp_check_for_blacklist( $anonymous_data, $topic_author, $topic_title, $topic_content ) )
		bbp_add_error( 'bbp_topic_blacklist', __( '<strong>ERROR</strong>: Your topic cannot be edited at this time.', 'bbpress' ) );

	/** Topic Status **********************************************************/

	// Maybe put into moderation
	if ( !bbp_check_for_moderation( $anonymous_data, $topic_author, $topic_title, $topic_content ) ) {

		// Set post status to pending if public or closed
		if ( in_array( $topic->post_status, array( bbp_get_public_status_id(), bbp_get_closed_status_id() ) ) ) {
			$topic_status = bbp_get_pending_status_id();
		}

	// Use existing post_status
	} else {
		$topic_status = $topic->post_status;
	}

	/** Topic Tags ************************************************************/

	// Either replace terms
	if ( bbp_allow_topic_tags() && current_user_can( 'assign_topic_tags' ) && ! empty( $_POST['bbp_topic_tags'] ) ) {

		// Escape tag input
		$terms = esc_attr( strip_tags( $_POST['bbp_topic_tags'] ) );

		// Explode by comma
		if ( strstr( $terms, ',' ) )
			$terms = explode( ',', $terms );

		// Add topic tag ID as main key
		$terms = array( bbp_get_topic_tag_tax_id() => $terms );

	// ...or remove them.
	} elseif ( isset( $_POST['bbp_topic_tags'] ) ) {
		$terms = array( bbp_get_topic_tag_tax_id() => array() );

	// Existing terms
	} else {
		$terms = array( bbp_get_topic_tag_tax_id() => explode( ',', bbp_get_topic_tag_names( $topic_id, ',' ) ) );
	}

	/** Additional Actions (Before Save) **************************************/

	do_action( 'bbp_edit_topic_pre_extras', $topic_id );

	// Bail if errors
	if ( bbp_has_errors() )
		return;

	/** No Errors *************************************************************/

	// Add the content of the form to $topic_data as an array
	// Just in time manipulation of topic data before being edited
	$topic_data = apply_filters( 'bbp_edit_topic_pre_insert', array(
		'ID'           => $topic_id,
		'post_title'   => $topic_title,
		'post_content' => $topic_content,
		'post_status'  => $topic_status,
		'post_parent'  => $forum_id,
		'post_author'  => $topic_author,
		'post_type'    => bbp_get_topic_post_type(),
		'tax_input'    => $terms,
	) );

	// Toggle revisions to avoid duplicates
	if ( post_type_supports( bbp_get_topic_post_type(), 'revisions' ) ) {
		$revisions_removed = true;
		remove_post_type_support( bbp_get_topic_post_type(), 'revisions' );
	}

	// Insert topic
	$topic_id = wp_update_post( $topic_data );

	// Toggle revisions back on
	if ( true === $revisions_removed ) {
		$revisions_removed = false;
		add_post_type_support( bbp_get_topic_post_type(), 'revisions' );
	}

	/** No Errors *************************************************************/

	if ( !empty( $topic_id ) && !is_wp_error( $topic_id ) ) {

		// Update counts, etc...
		do_action( 'bbp_edit_topic', $topic_id, $forum_id, $anonymous_data, $topic_author , true /* Is edit */ );

		/** Revisions *********************************************************/

		// Revision Reason
		if ( !empty( $_POST['bbp_topic_edit_reason'] ) ) {
			$topic_edit_reason = esc_attr( strip_tags( $_POST['bbp_topic_edit_reason'] ) );
		}

		// Update revision log
		if ( !empty( $_POST['bbp_log_topic_edit'] ) && ( 1 == $_POST['bbp_log_topic_edit'] ) )  {
			$revision_id = wp_save_post_revision( $topic_id );
			if ( ! empty( $revision_id ) ) {
				bbp_update_topic_revision_log( array(
					'topic_id'    => $topic_id,
					'revision_id' => $revision_id,
					'author_id'   => bbp_get_current_user_id(),
					'reason'      => $topic_edit_reason
				) );
			}
		}

		/** Move Topic ********************************************************/

		// If the new forum id is not equal to the old forum id, run the
		// bbp_move_topic action and pass the topic's forum id as the
		// first arg and topic id as the second to update counts.
		if ( $forum_id != $topic->post_parent ) {
			bbp_move_topic_handler( $topic_id, $topic->post_parent, $forum_id );
		}

		/** Stickies **********************************************************/

		if ( !empty( $_POST['bbp_stick_topic'] ) && in_array( $_POST['bbp_stick_topic'], array( 'stick', 'super', 'unstick' ) ) ) {

			// What's the dilly?
			switch ( $_POST['bbp_stick_topic'] ) {

				// Sticky in forum
				case 'stick'   :
					bbp_stick_topic( $topic_id );
					break;

				// Sticky in all forums
				case 'super'   :
					bbp_stick_topic( $topic_id, true );
					break;

				// Normal
				case 'unstick' :
				default        :
					bbp_unstick_topic( $topic_id );
					break;
			}
		}

		/** Additional Actions (After Save) ***********************************/

		do_action( 'bbp_edit_topic_post_extras', $topic_id );

		/** Redirect **********************************************************/

		// Redirect to
		$redirect_to = bbp_get_redirect_to();

		// View all?
		$view_all = bbp_get_view_all();

		// Get the topic URL
		$topic_url = bbp_get_topic_permalink( $topic_id, $redirect_to );

		// Add view all?
		if ( !empty( $view_all ) )
			$topic_url = bbp_add_view_all( $topic_url );

		// Allow to be filtered
		$topic_url = apply_filters( 'bbp_edit_topic_redirect_to', $topic_url, $view_all, $redirect_to );

		/** Successful Edit ***************************************************/

		// Redirect back to new topic
		wp_safe_redirect( $topic_url );

		// For good measure
		exit();

	/** Errors ****************************************************************/

	} else {
		$append_error = ( is_wp_error( $topic_id ) && $topic_id->get_error_message() ) ? $topic_id->get_error_message() . ' ' : '';
		bbp_add_error( 'bbp_topic_error', __( '<strong>ERROR</strong>: The following problem(s) have been found with your topic:' . $append_error . 'Please try again.', 'bbpress' ) );
	}
}

/**
 * Handle all the extra meta stuff from posting a new topic
 *
 * @param int $topic_id Optional. Topic id
 * @param int $forum_id Optional. Forum id
 * @param bool|array $anonymous_data Optional logged-out user data.
 * @param int $author_id Author id
 * @param bool $is_edit Optional. Is the post being edited? Defaults to false.
 * @uses bbp_get_topic_id() To get the topic id
 * @uses bbp_get_forum_id() To get the forum id
 * @uses bbp_get_current_user_id() To get the current user id
 * @yses bbp_get_topic_forum_id() To get the topic forum id
 * @uses update_post_meta() To update the topic metas
 * @uses set_transient() To update the flood check transient for the ip
 * @uses bbp_update_user_last_posted() To update the users last posted time
 * @uses bbp_is_subscriptions_active() To check if the subscriptions feature is
 *                                      activated or not
 * @uses bbp_is_user_subscribed() To check if the user is subscribed
 * @uses bbp_remove_user_subscription() To remove the user's subscription
 * @uses bbp_add_user_subscription() To add the user's subscription
 * @uses bbp_update_topic_forum_id() To update the topic's forum id
 * @uses bbp_update_topic_topic_id() To update the topic's topic id
 * @uses bbp_update_topic_last_reply_id() To update the last reply id topic meta
 * @uses bbp_update_topic_last_active_id() To update the topic last active id
 * @uses bbp_update_topic_last_active_time() To update the last active topic meta
 * @uses bbp_update_topic_reply_count() To update the topic reply count
 * @uses bbp_update_topic_reply_count_hidden() To udpate the topic hidden reply count
 * @uses bbp_update_topic_voice_count() To update the topic voice count
 * @uses bbp_update_topic_walker() To udpate the topic's ancestors
 */
function bbp_update_topic( $topic_id = 0, $forum_id = 0, $anonymous_data = false, $author_id = 0, $is_edit = false ) {

	// Validate the ID's passed from 'bbp_new_topic' action
	$topic_id = bbp_get_topic_id( $topic_id );
	$forum_id = bbp_get_forum_id( $forum_id );

	// Bail if there is no topic
	if ( empty( $topic_id ) )
		return;

	// Check author_id
	if ( empty( $author_id ) )
		$author_id = bbp_get_current_user_id();

	// Check forum_id
	if ( empty( $forum_id ) )
		$forum_id = bbp_get_topic_forum_id( $topic_id );

	// If anonymous post, store name, email, website and ip in post_meta.
	// It expects anonymous_data to be sanitized.
	// Check bbp_filter_anonymous_post_data() for sanitization.
	if ( !empty( $anonymous_data ) && is_array( $anonymous_data ) ) {

		// Parse arguments against default values
		$r = bbp_parse_args( $anonymous_data, array(
			'bbp_anonymous_name'    => '',
			'bbp_anonymous_email'   => '',
			'bbp_anonymous_website' => '',
		), 'update_topic' );

		// Update all anonymous metas
		foreach( $r as $anon_key => $anon_value ) {
			update_post_meta( $topic_id, '_' . $anon_key, (string) $anon_value, false );
		}

		// Set transient for throttle check (only on new, not edit)
		if ( empty( $is_edit ) ) {
			set_transient( '_bbp_' . bbp_current_author_ip() . '_last_posted', time() );
		}

	} else {
		if ( empty( $is_edit ) && !current_user_can( 'throttle' ) ) {
			bbp_update_user_last_posted( $author_id );
		}
	}

	// Handle Subscription Checkbox
	if ( bbp_is_subscriptions_active() && !empty( $author_id ) ) {
		$subscribed = bbp_is_user_subscribed( $author_id, $topic_id );
		$subscheck  = ( !empty( $_POST['bbp_topic_subscription'] ) && ( 'bbp_subscribe' == $_POST['bbp_topic_subscription'] ) ) ? true : false;

		// Subscribed and unsubscribing
		if ( true == $subscribed && false == $subscheck ) {
			bbp_remove_user_subscription( $author_id, $topic_id );

		// Subscribing
		} elseif ( false == $subscribed && true == $subscheck ) {
			bbp_add_user_subscription( $author_id, $topic_id );
		}
	}

	// Forum topic meta
	bbp_update_topic_forum_id( $topic_id, $forum_id );
	bbp_update_topic_topic_id( $topic_id, $topic_id );

	// Update associated topic values if this is a new topic
	if ( empty( $is_edit ) ) {

		// Update poster IP if not editing
		update_post_meta( $topic_id, '_bbp_author_ip', bbp_current_author_ip(), false );

		// Last active time
		$last_active = current_time( 'mysql' );

		// Reply topic meta
		bbp_update_topic_last_reply_id      ( $topic_id, 0            );
		bbp_update_topic_last_active_id     ( $topic_id, $topic_id    );
		bbp_update_topic_last_active_time   ( $topic_id, $last_active );
		bbp_update_topic_reply_count        ( $topic_id, 0            );
		bbp_update_topic_reply_count_hidden ( $topic_id, 0            );
		bbp_update_topic_voice_count        ( $topic_id               );

		// Walk up ancestors and do the dirty work
		bbp_update_topic_walker( $topic_id, $last_active, $forum_id, 0, false );
	}
}

/**
 * Walks up the post_parent tree from the current topic_id, and updates the
 * counts of forums above it. This calls a few internal functions that all run
 * manual queries against the database to get their results. As such, this
 * function can be costly to run but is necessary to keep everything accurate.
 *
 * @since bbPress (r2800)
 * @param int $topic_id Topic id
 * @param string $last_active_time Optional. Last active time
 * @param int $forum_id Optional. Forum id
 * @param int $reply_id Optional. Reply id
 * @param bool $refresh Reset all the previous parameters? Defaults to true.
 * @uses bbp_get_topic_id() To get the topic id
 * @uses bbp_get_topic_forum_id() To get the topic forum id
 * @uses get_post_ancestors() To get the topic's ancestors
 * @uses bbp_is_forum() To check if the ancestor is a forum
 * @uses bbp_update_forum() To update the forum
 */
function bbp_update_topic_walker( $topic_id, $last_active_time = '', $forum_id = 0, $reply_id = 0, $refresh = true ) {

	// Validate topic_id
	$topic_id  = bbp_get_topic_id( $topic_id );

	// Define local variable(s)
	$active_id = 0;

	// Topic was passed
	if ( !empty( $topic_id ) ) {

		// Get the forum ID if none was passed
		if ( empty( $forum_id )  ) {
			$forum_id = bbp_get_topic_forum_id( $topic_id );
		}

		// Set the active_id based on topic_id/reply_id
		$active_id = empty( $reply_id ) ? $topic_id : $reply_id;
	}

	// Get topic ancestors
	$ancestors = array_values( array_unique( array_merge( array( $forum_id ), (array) get_post_ancestors( $topic_id ) ) ) );

	// Topic status
	$topic_status = get_post_status( $topic_id );

	// If we want a full refresh, unset any of the possibly passed variables
	if ( true == $refresh ) {
		$forum_id = $topic_id = $reply_id = $active_id = $last_active_time = 0;
		$topic_status = bbp_get_public_status_id();
	}

	// Loop through ancestors
	if ( !empty( $ancestors ) ) {
		foreach ( $ancestors as $ancestor ) {

			// If ancestor is a forum, update counts
			if ( bbp_is_forum( $ancestor ) ) {

				// Update the forum
				bbp_update_forum( array(
					'forum_id'           => $ancestor,
					'last_topic_id'      => $topic_id,
					'last_reply_id'      => $reply_id,
					'last_active_id'     => $active_id,
					'last_active_time'   => 0,
					'last_active_status' => $topic_status
				) );
			}
		}
	}
}

/**
 * Handle the moving of a topic from one forum to another. This includes walking
 * up the old and new branches and updating the counts.
 *
 * @param int $topic_id Topic id
 * @param int $old_forum_id Old forum id
 * @param int $new_forum_id New forum id
 * @uses bbp_get_topic_id() To get the topic id
 * @uses bbp_get_forum_id() To get the forum id
 * @uses bbp_get_stickies() To get the old forums sticky topics
 * @uses delete_post_meta() To delete the forum sticky meta
 * @uses update_post_meta() To update the old forum sticky meta
 * @uses bbp_stick_topic() To stick the topic in the new forum
 * @uses bbp_get_reply_post_type() To get the reply post type
 * @uses bbp_get_all_child_ids() To get the public child ids
 * @uses bbp_update_reply_forum_id() To update the reply forum id
 * @uses bbp_update_topic_forum_id() To update the topic forum id
 * @uses get_post_ancestors() To get the topic's ancestors
 * @uses bbp_is_forum() To check if the ancestor is a forum
 * @uses bbp_update_forum() To update the forum
 */
function bbp_move_topic_handler( $topic_id, $old_forum_id, $new_forum_id ) {

	// Validate parameters
	$topic_id     = bbp_get_topic_id( $topic_id     );
	$old_forum_id = bbp_get_forum_id( $old_forum_id );
	$new_forum_id = bbp_get_forum_id( $new_forum_id );

	// Update topic forum's ID
	bbp_update_topic_forum_id( $topic_id, $new_forum_id );

	/** Stickies **************************************************************/

	// Get forum stickies
	$old_stickies = bbp_get_stickies( $old_forum_id );

	// Only proceed if stickies are found
	if ( !empty( $old_stickies ) ) {

		// Define local variables
		$updated_stickies = array();

		// Loop through stickies of forum and add misses to the updated array
		foreach ( (array) $old_stickies as $sticky_topic_id ) {
			if ( $topic_id != $sticky_topic_id ) {
				$updated_stickies[] = $sticky_topic_id;
			}
		}

		// If stickies are different, update or delete them
		if ( $updated_stickies != $old_stickies ) {

			// No more stickies so delete the meta
			if ( empty( $updated_stickies ) ) {
				delete_post_meta( $old_forum_id, '_bbp_sticky_topics' );

			// Still stickies so update the meta
			} else {
				update_post_meta( $old_forum_id, '_bbp_sticky_topics', $updated_stickies );
			}

			// Topic was sticky, so restick in new forum
			bbp_stick_topic( $topic_id );
		}
	}

	/** Topic Replies *********************************************************/

	// Get the topics replies
	$replies = bbp_get_all_child_ids( $topic_id, bbp_get_reply_post_type() );

	// Update the forum_id of all replies in the topic
	foreach ( $replies as $reply_id ) {
		bbp_update_reply_forum_id( $reply_id, $new_forum_id );
	}

	/** Old forum_id **********************************************************/

	// Get topic ancestors
	$old_forum_ancestors = array_values( array_unique( array_merge( array( $old_forum_id ), (array) get_post_ancestors( $old_forum_id ) ) ) );

	// Loop through ancestors and update them
	if ( !empty( $old_forum_ancestors ) ) {
		foreach ( $old_forum_ancestors as $ancestor ) {
			if ( bbp_is_forum( $ancestor ) ) {
				bbp_update_forum( array(
					'forum_id' => $ancestor,
				) );
			}
		}
	}

	/** New forum_id **********************************************************/

	// Make sure we're not walking twice
	if ( !in_array( $new_forum_id, $old_forum_ancestors ) ) {

		// Get topic ancestors
		$new_forum_ancestors = array_values( array_unique( array_merge( array( $new_forum_id ), (array) get_post_ancestors( $new_forum_id ) ) ) );

		// Make sure we're not walking twice
		$new_forum_ancestors = array_diff( $new_forum_ancestors, $old_forum_ancestors );

		// Loop through ancestors and update them
		if ( !empty( $new_forum_ancestors ) ) {
			foreach ( $new_forum_ancestors as $ancestor ) {
				if ( bbp_is_forum( $ancestor ) ) {
					bbp_update_forum( array(
						'forum_id' => $ancestor,
					) );
				}
			}
		}
	}
}

/**
 * Merge topic handler
 *
 * Handles the front end merge topic submission
 *
 * @since bbPress (r2756)
 *
 * @param string $action The requested action to compare this function to
 * @uses bbp_add_error() To add an error message
 * @uses bbp_get_topic() To get the topics
 * @uses bbp_verify_nonce_request() To verify the nonce and check the request
 * @uses current_user_can() To check if the current user can edit the topics
 * @uses is_wp_error() To check if the value retrieved is a {@link WP_Error}
 * @uses do_action() Calls 'bbp_merge_topic' with the destination and source
 *                    topic ids
 * @uses bbp_get_topic_subscribers() To get the source topic subscribers
 * @uses bbp_add_user_subscription() To add the user subscription
 * @uses bbp_remove_user_subscription() To remove the user subscription
 * @uses bbp_get_topic_favoriters() To get the source topic favoriters
 * @uses bbp_add_user_favorite() To add the user favorite
 * @uses bbp_remove_user_favorite() To remove the user favorite
 * @uses wp_get_post_terms() To get the source topic tags
 * @uses wp_set_post_terms() To set the topic tags
 * @uses wp_delete_object_term_relationships() To delete the topic tags
 * @uses bbp_open_topic() To open the topic
 * @uses bbp_unstick_topic() To unstick the topic
 * @uses bbp_get_reply_post_type() To get the reply post type
 * @uses get_posts() To get the replies
 * @uses wp_update_post() To update the topic
 * @uses bbp_update_reply_topic_id() To update the reply topic id
 * @uses bbp_get_topic_forum_id() To get the topic forum id
 * @uses bbp_update_reply_forum_id() To update the reply forum id
 * @uses do_action() Calls 'bbp_merged_topic_reply' with the reply id and
 *                    destination topic id
 * @uses do_action() Calls 'bbp_merged_topic' with the destination and source
 *                    topic ids and source topic's forum id
 * @uses bbp_get_topic_permalink() To get the topic permalink
 * @uses wp_safe_redirect() To redirect to the topic link
 */
function bbp_merge_topic_handler( $action = '' ) {

	// Bail if action is not bbp-merge-topic
	if ( 'bbp-merge-topic' !== $action )
		return;

	// Define local variable(s)
	$source_topic_id = $destination_topic_id = 0;
	$source_topic = $destination_topic = 0;
	$subscribers = $favoriters = $replies = array();

	/** Source Topic **********************************************************/

	// Topic id
	if ( empty( $_POST['bbp_topic_id'] ) ) {
		bbp_add_error( 'bbp_merge_topic_source_id', __( '<strong>ERROR</strong>: Topic ID not found.', 'bbpress' ) );
	} else {
		$source_topic_id = (int) $_POST['bbp_topic_id'];
	}

	// Nonce check
	if ( ! bbp_verify_nonce_request( 'bbp-merge-topic_' . $source_topic_id ) ) {
		bbp_add_error( 'bbp_merge_topic_nonce', __( '<strong>ERROR</strong>: Are you sure you wanted to do that?', 'bbpress' ) );
		return;

	// Source topic not found
	} elseif ( !$source_topic = bbp_get_topic( $source_topic_id ) ) {
		bbp_add_error( 'bbp_merge_topic_source_not_found', __( '<strong>ERROR</strong>: The topic you want to merge was not found.', 'bbpress' ) );
		return;
	}

	// Cannot edit source topic
	if ( !current_user_can( 'edit_topic', $source_topic->ID ) ) {
		bbp_add_error( 'bbp_merge_topic_source_permission', __( '<strong>ERROR</strong>: You do not have the permissions to edit the source topic.', 'bbpress' ) );
		return;
	}

	/** Destination Topic *****************************************************/

	// Topic id
	if ( empty( $_POST['bbp_destination_topic'] ) )
		bbp_add_error( 'bbp_merge_topic_destination_id', __( '<strong>ERROR</strong>: Destination topic ID not found.', 'bbpress' ) );
	else
		$destination_topic_id = (int) $_POST['bbp_destination_topic'];

	// Destination topic not found
	if ( !$destination_topic = bbp_get_topic( $destination_topic_id ) )
		bbp_add_error( 'bbp_merge_topic_destination_not_found', __( '<strong>ERROR</strong>: The topic you want to merge to was not found.', 'bbpress' ) );

	// Cannot edit destination topic
	if ( !current_user_can( 'edit_topic', $destination_topic->ID ) )
		bbp_add_error( 'bbp_merge_topic_destination_permission', __( '<strong>ERROR</strong>: You do not have the permissions to edit the destination topic.', 'bbpress' ) );

	// Bail if errors
	if ( bbp_has_errors() )
		return;

	/** No Errors *************************************************************/

	// Update counts, etc...
	do_action( 'bbp_merge_topic', $destination_topic->ID, $source_topic->ID );

	/** Date Check ************************************************************/

	// Check if the destination topic is older than the source topic
	if ( strtotime( $source_topic->post_date ) < strtotime( $destination_topic->post_date ) ) {

		// Set destination topic post_date to 1 second before source topic
		$destination_post_date = date( 'Y-m-d H:i:s', strtotime( $source_topic->post_date ) - 1 );

		$postarr = array(
			'ID'            => $destination_topic_id,
			'post_date'     => $destination_post_date,
			'post_date_gmt' => get_gmt_from_date( $destination_post_date )
		);

		// Update destination topic
		wp_update_post( $postarr );
	}

	/** Subscriptions *********************************************************/

	// Get subscribers from source topic
	$subscribers = bbp_get_topic_subscribers( $source_topic->ID );

	// Remove the topic from everybody's subscriptions
	if ( !empty( $subscribers ) ) {

		// Loop through each user
		foreach ( (array) $subscribers as $subscriber ) {

			// Shift the subscriber if told to
			if ( !empty( $_POST['bbp_topic_subscribers'] ) && ( 1 == $_POST['bbp_topic_subscribers'] ) && bbp_is_subscriptions_active() )
				bbp_add_user_subscription( $subscriber, $destination_topic->ID );

			// Remove old subscription
			bbp_remove_user_subscription( $subscriber, $source_topic->ID );
		}
	}

	/** Favorites *************************************************************/

	// Get favoriters from source topic
	$favoriters = bbp_get_topic_favoriters( $source_topic->ID );

	// Remove the topic from everybody's favorites
	if ( !empty( $favoriters ) ) {

		// Loop through each user
		foreach ( (array) $favoriters as $favoriter ) {

			// Shift the favoriter if told to
			if ( !empty( $_POST['bbp_topic_favoriters'] ) && 1 == $_POST['bbp_topic_favoriters'] )
				bbp_add_user_favorite( $favoriter, $destination_topic->ID );

			// Remove old favorite
			bbp_remove_user_favorite( $favoriter, $source_topic->ID );
		}
	}

	/** Tags ******************************************************************/

	// Get the source topic tags
	$source_topic_tags = wp_get_post_terms( $source_topic->ID, bbp_get_topic_tag_tax_id(), array( 'fields' => 'names' ) );

	// Tags to possibly merge
	if ( !empty( $source_topic_tags ) && !is_wp_error( $source_topic_tags ) ) {

		// Shift the tags if told to
		if ( !empty( $_POST['bbp_topic_tags'] ) && ( 1 == $_POST['bbp_topic_tags'] ) )
			wp_set_post_terms( $destination_topic->ID, $source_topic_tags, bbp_get_topic_tag_tax_id(), true );

		// Delete the tags from the source topic
		wp_delete_object_term_relationships( $source_topic->ID, bbp_get_topic_tag_tax_id() );
	}

	/** Source Topic **********************************************************/

	// Status
	bbp_open_topic( $source_topic->ID );

	// Sticky
	bbp_unstick_topic( $source_topic->ID );

	// Get the replies of the source topic
	$replies = (array) get_posts( array(
		'post_parent'    => $source_topic->ID,
		'post_type'      => bbp_get_reply_post_type(),
		'posts_per_page' => -1,
		'order'          => 'ASC'
	) );

	// Prepend the source topic to its replies array for processing
	array_unshift( $replies, $source_topic );

	if ( !empty( $replies ) ) {

		/** Merge Replies *****************************************************/

		// Change the post_parent of each reply to the destination topic id
		foreach ( $replies as $reply ) {
			$postarr = array(
				'ID'          => $reply->ID,
				'post_title'  => sprintf( __( 'Reply To: %s', 'bbpress' ), $destination_topic->post_title ),
				'post_name'   => false,
				'post_type'   => bbp_get_reply_post_type(),
				'post_parent' => $destination_topic->ID,
				'guid'        => ''
			);

			wp_update_post( $postarr );

			// Adjust reply meta values
			bbp_update_reply_topic_id( $reply->ID, $destination_topic->ID                           );
			bbp_update_reply_forum_id( $reply->ID, bbp_get_topic_forum_id( $destination_topic->ID ) );

			// Do additional actions per merged reply
			do_action( 'bbp_merged_topic_reply', $reply->ID, $destination_topic->ID );
		}
	}

	/** Successful Merge ******************************************************/

	// Update topic's last meta data
	bbp_update_topic_last_reply_id   ( $destination_topic->ID );
	bbp_update_topic_last_active_id  ( $destination_topic->ID );
	bbp_update_topic_last_active_time( $destination_topic->ID );

	// Send the post parent of the source topic as it has been shifted
	// (possibly to a new forum) so we need to update the counts of the
	// old forum as well as the new one
	do_action( 'bbp_merged_topic', $destination_topic->ID, $source_topic->ID, $source_topic->post_parent );

	// Redirect back to new topic
	wp_safe_redirect( bbp_get_topic_permalink( $destination_topic->ID ) );

	// For good measure
	exit();
}

/**
 * Fix counts on topic merge
 *
 * When a topic is merged, update the counts of source and destination topic
 * and their forums.
 *
 * @since bbPress (r2756)
 *
 * @param int $destination_topic_id Destination topic id
 * @param int $source_topic_id Source topic id
 * @param int $source_topic_forum Source topic's forum id
 * @uses bbp_update_forum_topic_count() To update the forum topic counts
 * @uses bbp_update_forum_reply_count() To update the forum reply counts
 * @uses bbp_update_topic_reply_count() To update the topic reply counts
 * @uses bbp_update_topic_voice_count() To update the topic voice counts
 * @uses bbp_update_topic_reply_count_hidden() To update the topic hidden reply
 *                                              count
 * @uses do_action() Calls 'bbp_merge_topic_count' with the destination topic
 *                    id, source topic id & source topic forum id
 */
function bbp_merge_topic_count( $destination_topic_id, $source_topic_id, $source_topic_forum_id ) {

	/** Source Topic **********************************************************/

	// Forum Topic Counts
	bbp_update_forum_topic_count( $source_topic_forum_id );

	// Forum Reply Counts
	bbp_update_forum_reply_count( $source_topic_forum_id );

	/** Destination Topic *****************************************************/

	// Topic Reply Counts
	bbp_update_topic_reply_count( $destination_topic_id );

	// Topic Hidden Reply Counts
	bbp_update_topic_reply_count_hidden( $destination_topic_id );

	// Topic Voice Counts
	bbp_update_topic_voice_count( $destination_topic_id );

	do_action( 'bbp_merge_topic_count', $destination_topic_id, $source_topic_id, $source_topic_forum_id );
}

/**
 * Split topic handler
 *
 * Handles the front end split topic submission
 *
 * @since bbPress (r2756)
 *
 * @param string $action The requested action to compare this function to
 * @uses bbp_add_error() To add an error message
 * @uses bbp_get_reply() To get the reply
 * @uses bbp_get_topic() To get the topics
 * @uses bbp_verify_nonce_request() To verify the nonce and check the request
 * @uses current_user_can() To check if the current user can edit the topics
 * @uses bbp_get_topic_post_type() To get the topic post type
 * @uses is_wp_error() To check if the value retrieved is a {@link WP_Error}
 * @uses do_action() Calls 'bbp_pre_split_topic' with the from reply id, source
 *                    and destination topic ids
 * @uses bbp_get_topic_subscribers() To get the source topic subscribers
 * @uses bbp_add_user_subscription() To add the user subscription
 * @uses bbp_get_topic_favoriters() To get the source topic favoriters
 * @uses bbp_add_user_favorite() To add the user favorite
 * @uses…

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