bbp_edit_forum_handler( string $action = '' )

function bbp_edit_forum_handler( $action = '' ) {

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

	// Define local variable(s)
	$anonymous_data = array();
	$forum = $forum_id = $forum_parent_id = 0;
	$forum_title = $forum_content = $forum_edit_reason = '';

	/** Forum *****************************************************************/

	// Forum id was not passed
	if ( empty( $_POST['bbp_forum_id'] ) ) {
		bbp_add_error( 'bbp_edit_forum_id', __( '<strong>ERROR</strong>: Forum ID not found.', 'buddyboss' ) );
		return;

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

	// Nonce check
	if ( ! bbp_verify_nonce_request( 'bbp-edit-forum_' . $forum_id ) ) {
		bbp_add_error( 'bbp_edit_forum_nonce', __( '<strong>ERROR</strong>: Are you sure you wanted to do that?', 'buddyboss' ) );
		return;

	// Forum does not exist
	} elseif ( empty( $forum ) ) {
		bbp_add_error( 'bbp_edit_forum_not_found', __( '<strong>ERROR</strong>: The forum you want to edit was not found.', 'buddyboss' ) );
		return;

	// User cannot edit this forum
	} elseif ( !current_user_can( 'edit_forum', $forum_id ) ) {
		bbp_add_error( 'bbp_edit_forum_permissions', __( '<strong>ERROR</strong>: You do not have permission to edit that forum.', 'buddyboss' ) );
		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_forum'] ) && ( wp_create_nonce( 'bbp-unfiltered-html-forum_' . $forum_id ) === $_POST['_bbp_unfiltered_html_forum'] ) ) {
		remove_filter( 'bbp_edit_forum_pre_title',   'wp_filter_kses'      );
		remove_filter( 'bbp_edit_forum_pre_content', 'bbp_encode_bad',  10 );
		remove_filter( 'bbp_edit_forum_pre_content', 'bbp_filter_kses', 30 );
	}

	/** Forum Parent ***********************************************************/

	// Forum parent id was passed
	if ( !empty( $_POST['bbp_forum_parent_id'] ) ) {
		$forum_parent_id = bbp_get_forum_id( $_POST['bbp_forum_parent_id'] );
	}

	// Current forum this forum is in
	$current_parent_forum_id = bbp_get_forum_parent_id( $forum_id );

	// Forum exists
	if ( !empty( $forum_parent_id ) && ( $forum_parent_id !== $current_parent_forum_id ) ) {

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

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

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

	/** Forum Title ***********************************************************/

	if ( !empty( $_POST['bbp_forum_title'] ) )
		$forum_title = esc_attr( strip_tags( $_POST['bbp_forum_title'] ) );

	// Filter and sanitize
	$forum_title = apply_filters( 'bbp_edit_forum_pre_title', $forum_title, $forum_id );

	// No forum title
	if ( empty( $forum_title ) )
		bbp_add_error( 'bbp_edit_forum_title', __( '<strong>ERROR</strong>: Your forum needs a title.', 'buddyboss' ) );

	/** Forum Content *********************************************************/

	if ( !empty( $_POST['bbp_forum_content'] ) )
		$forum_content = $_POST['bbp_forum_content'];

	// Filter and sanitize
	$forum_content = apply_filters( 'bbp_edit_forum_pre_content', $forum_content, $forum_id );

	// No forum content
	if ( empty( $forum_content ) )
		bbp_add_error( 'bbp_edit_forum_content', __( '<strong>ERROR</strong>: Your forum description cannot be empty.', 'buddyboss' ) );

	/** Forum Blacklist *******************************************************/

	if ( !bbp_check_for_blacklist( $anonymous_data, bbp_get_forum_author_id( $forum_id ), $forum_title, $forum_content ) )
		bbp_add_error( 'bbp_forum_blacklist', __( '<strong>ERROR</strong>: Your forum cannot be edited at this time.', 'buddyboss' ) );

	/** Forum Moderation ******************************************************/

	$post_status = bbp_get_public_status_id();
	if ( !bbp_check_for_moderation( $anonymous_data, bbp_get_forum_author_id( $forum_id ), $forum_title, $forum_content ) )
		$post_status = bbp_get_pending_status_id();

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

	do_action( 'bbp_edit_forum_pre_extras', $forum_id );

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

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

	// Add the content of the form to $forum_data as an array
	// Just in time manipulation of forum data before being edited
	$forum_data = apply_filters( 'bbp_edit_forum_pre_insert', array(
		'ID'           => $forum_id,
		'post_title'   => $forum_title,
		'post_content' => $forum_content,
		'post_status'  => $post_status,
		'post_parent'  => $forum_parent_id
	) );

	// Insert forum
	$forum_id = wp_update_post( $forum_data );

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

	/**
	 * @todo omitted for 2.1
	// Revision Reason
	if ( !empty( $_POST['bbp_forum_edit_reason'] ) )
		$forum_edit_reason = esc_attr( strip_tags( $_POST['bbp_forum_edit_reason'] ) );

	// Update revision log
	if ( !empty( $_POST['bbp_log_forum_edit'] ) && ( "1" === $_POST['bbp_log_forum_edit'] ) && ( $revision_id = wp_save_post_revision( $forum_id ) ) ) {
		bbp_update_forum_revision_log( array(
			'forum_id'    => $forum_id,
			'revision_id' => $revision_id,
			'author_id'   => bbp_get_current_user_id(),
			'reason'      => $forum_edit_reason
		) );
	}
	 */

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

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

		// Update counts, etc...
		do_action( 'bbp_edit_forum', array(
			'forum_id'           => $forum_id,
			'post_parent'        => $forum_parent_id,
			'forum_author'       => $forum->post_author,
			'last_topic_id'      => 0,
			'last_reply_id'      => 0,
			'last_active_id'     => 0,
			'last_active_time'   => 0,
			'last_active_status' => bbp_get_public_status_id()
		) );

		// If the new forum parent id is not equal to the old forum parent
		// id, run the bbp_move_forum action and pass the forum's parent id
		// as the first arg and new forum parent id as the second.
		// @todo implement
		//if ( $forum_id !== $forum->post_parent )
		//	bbp_move_forum_handler( $forum_parent_id, $forum->post_parent, $forum_id );

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

		do_action( 'bbp_edit_forum_post_extras', $forum_id );

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

		// Redirect to
		$redirect_to = bbp_get_redirect_to();

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

		// Get the forum URL
		$forum_url = bbp_get_forum_permalink( $forum_id, $redirect_to );

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

		// Allow to be filtered
		$forum_url = apply_filters( 'bbp_edit_forum_redirect_to', $forum_url, $view_all, $redirect_to );

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

		// Redirect back to new forum
		wp_safe_redirect( $forum_url );

		// For good measure
		exit();

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

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