BP_REST_Topics_Endpoint::update_item( WP_REST_Request $request )

	public function update_item( $request ) {
		$request->set_param( 'context', 'edit' );

		$topic_new = $this->prepare_topic_for_database( $request );

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

		// Topic id was not passed.
		if ( empty( $topic_new->bbp_topic_id ) ) {
			new WP_Error(
				'bp_rest_topic_invalid_id',
				__( 'Invalid topic ID.', 'buddyboss' ),
				array(
					'status' => 404,
				)
			);

			// Topic id was passed.
		} elseif ( is_numeric( $topic_new->bbp_topic_id ) ) {
			$topic_id = (int) $topic_new->bbp_topic_id;
			$topic    = bbp_get_topic( $topic_id );
		}

		// Topic does not exist.
		if ( empty( $topic ) ) {
			new WP_Error(
				'bp_rest_bbp_edit_topic_not_found',
				__( 'Sorry, The discussion you want to edit was not found.', 'buddyboss' ),
				array(
					'status' => 404,
				)
			);
		}

		// Topic exists.
		// 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 ) ) {
				return new WP_Error(
					'bp_rest_bbp_edit_topic_permissions',
					__( 'Sorry, You do not have permission to edit that discussion.', 'buddyboss' ),
					array(
						'status' => 403,
					)
				);
			}

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

			// It is an anonymous post.
		} else {

			$anonymous_args = array(
				'bbp_anonymous_name'    => ! empty( $request['anonymous_name'] ) ? sanitize_text_field( $request['anonymous_name'] ) : '',
				'bbp_anonymous_email'   => ! empty( $request['anonymous_email'] ) ? sanitize_email( $request['anonymous_email'] ) : '',
				'bbp_anonymous_website' => ! empty( $request['anonymous_website'] ) ? sanitize_text_field( $request['anonymous_website'] ) : '',
			);

			// Filter anonymous data.
			$anonymous_data = bbp_filter_anonymous_post_data( $anonymous_args );
		}

		// Remove kses filters from title and content for capable users.
		if ( current_user_can( 'unfiltered_html' ) ) {
			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( $topic_new->bbp_forum_id ) ) {
			return new WP_Error(
				'bp_rest_bbp_topic_forum_id',
				__( 'Sorry, Forum ID is missing.', 'buddyboss' ),
				array(
					'status' => 400,
				)
			);

			// Forum id was passed.
		} elseif ( is_numeric( $topic_new->bbp_forum_id ) ) {
			$forum_id = (int) $topic_new->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 ) ) {
				return new WP_Error(
					'bp_rest_bbp_edit_topic_forum_category',
					__( 'Sorry, This forum is a category. No discussions can be created in this forum.', 'buddyboss' ),
					array(
						'status' => 400,
					)
				);

				// 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 ) ) {
					return new WP_Error(
						'bp_rest_bbp_edit_topic_forum_closed',
						__( 'Sorry, This forum has been closed to new discussions.', 'buddyboss' ),
						array(
							'status' => 400,
						)
					);
				}

				/**
				 * Added logic for group forum
				 * Current user is part of that group or not.
				 * We need to check manually because bbpress updating that caps only on group forum page and
				 * in API those conditional tag will not work.
				 */
				$is_member = false;
				$group_ids = array();
				if ( function_exists( 'bbp_get_forum_group_ids' ) ) {
					$group_ids = bbp_get_forum_group_ids( $forum_id );
					if ( ! empty( $group_ids ) ) {
						foreach ( $group_ids as $group_id ) {
							if ( groups_is_user_member( $topic_author, $group_id ) ) {
								$is_member = true;
								break;
							}
						}
					}
				}

				// Forum is private and user cannot access.
				if ( bbp_is_forum_private( $forum_id ) && ! bbp_is_user_keymaster() ) {
					if (
						( empty( $group_ids ) && ! current_user_can( 'read_private_forums' ) )
						|| ( ! empty( $group_ids ) && ! $is_member )
					) {
						return new WP_Error(
							'bp_rest_bbp_edit_topic_forum_private',
							__( 'Sorry, This forum is private and you do not have the capability to read or create new discussions in it.', 'buddyboss' ),
							array(
								'status' => 400,
							)
						);
					}

					// Forum is hidden and user cannot access.
				} elseif ( bbp_is_forum_hidden( $forum_id ) && ! bbp_is_user_keymaster() ) {
					if (
						( empty( $group_ids ) && ! current_user_can( 'read_hidden_forums' ) )
						|| ( ! empty( $group_ids ) && ! $is_member )
					) {
						return new WP_Error(
							'bp_rest_bbp_edit_topic_forum_hidden',
							__( 'Sorry, This forum is hidden and you do not have the capability to read or create new discussions in it.', 'buddyboss' ),
							array(
								'status' => 400,
							)
						);
					}
				}
			}
		}

		/** Discussion Title */
		if ( ! empty( $topic_new->bbp_topic_title ) ) {
			$topic_title = esc_attr( wp_strip_all_tags( $topic_new->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 ) ) {
			return new WP_Error(
				'bp_rest_bbp_edit_topic_title',
				__( 'Sorry, Your discussion needs a title.', 'buddyboss' ),
				array(
					'status' => 400,
				)
			);
		}

		/** Topic Content */
		if ( ! empty( $topic_new->bbp_topic_content ) ) {
			$topic_content = $topic_new->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 ) ) {
			return new WP_Error(
				'bp_rest_bbp_edit_topic_content',
				__( 'Sorry, Your discussion cannot be empty.', 'buddyboss' ),
				array(
					'status' => 400,
				)
			);
		}

		/** Topic Blacklist */
		if ( ! bbp_check_for_blacklist( $anonymous_data, $topic_author, $topic_title, $topic_content ) ) {
			return new WP_Error(
				'bp_rest_bbp_topic_blacklist',
				__( 'Sorry, Your discussion cannot be edited at this time.', 'buddyboss' ),
				array(
					'status' => 400,
				)
			);
		}

		/** 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(),
				),
				true
			) ) {
				$topic_status = bbp_get_pending_status_id();
			}

			// Check a whitelist of possible topic status ID's.
		} elseif ( ! empty( $topic_new->bbp_topic_status ) && in_array( $topic_new->bbp_topic_status, array_keys( bbp_get_topic_statuses() ), true ) ) {
			$topic_status = $topic_new->bbp_topic_status;

			// 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( $topic_new->bbp_topic_tags ) ) {

			// Escape tag input.
			$terms = esc_attr( wp_strip_all_tags( $topic_new->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( $topic_new->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 );

		// 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' );
		}

		if ( empty( $topic_id ) || is_wp_error( $topic_id ) ) {
			$append_error = (
			( is_wp_error( $topic_id ) && $topic_id->get_error_message() )
				? __( 'The following problem(s) have been found with your topic: ', 'buddyboss' ) . $topic_id->get_error_message() . __( 'Please try again.', 'buddyboss' )
				: __( 'We are facing a problem to update a topic.', 'buddyboss' )
			);

			return new WP_Error(
				'bp_rest_bbp_topic_error',
				$append_error,
				array(
					'status' => 400,
				)
			);
		}

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

		/** Revisions */
		// Revision Reason.
		if ( ! empty( $topic_new->bbp_topic_edit_reason ) ) {
			$topic_edit_reason = esc_attr( wp_strip_all_tags( $topic_new->bbp_topic_edit_reason ) );
		}

		// Update revision log.
		if ( ! empty( $topic_new->bbp_log_topic_edit ) && ( true === $topic_new->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( $topic_new->bbp_stick_topic ) && in_array( $topic_new->bbp_stick_topic, array_keys( bbp_get_topic_types() ), true ) ) {
			// What's the caps?
			if ( current_user_can( 'moderate' ) ) {

				// What's the haps?
				switch ( $topic_new->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;
				}
			}
		}

		// Handle Subscription Checkbox.
		if ( bbp_is_subscriptions_active() ) {
			$author_id = bbp_get_user_id( 0, true, true );
			// Check if subscribed.
			$subscribed = bbp_is_user_subscribed( $author_id, $topic_id );

			// Subscribed and unsubscribing.
			if ( true === $subscribed && empty( $topic_new->bbp_topic_subscription ) ) {
				bbp_remove_user_subscription( $author_id, $topic_id );

				// Not subscribed and subscribing.
			} elseif ( false === $subscribed && ! empty( $topic_new->bbp_topic_subscription ) ) {
				bbp_add_user_subscription( $author_id, $topic_id );
			}
		}

		/** Additional Actions (After Save) */
		do_action( 'bbp_edit_topic_post_extras', $topic_id );

		$topic         = get_post( $topic_id );
		$fields_update = $this->update_additional_fields_for_object( $topic, $request );

		if ( is_wp_error( $fields_update ) ) {
			return $fields_update;
		}

		$retval = $this->prepare_response_for_collection(
			$this->prepare_item_for_response( $topic, $request )
		);

		$response = rest_ensure_response( $retval );

		/**
		 * Fires after a topic is updated and fetched via the REST API.
		 *
		 * @param array            $topic    Updated topic.
		 * @param WP_REST_Response $response The response data.
		 * @param WP_REST_Request  $request  The request sent to the API.
		 *
		 * @since 0.1.0
		 */
		do_action( 'bp_rest_topic_update_item', $topic, $response, $request );

		return $response;
	}