BP_Document::delete( array $args = array(), bool $from = false )

	public static function delete( $args = array(), $from = false ) {
		global $wpdb;

		$bp = buddypress();
		$r  = wp_parse_args(
			$args,
			array(
				'id'            => false,
				'blog_id'       => false,
				'attachment_id' => false,
				'user_id'       => false,
				'title'         => false,
				'folder_id'     => false,
				'activity_id'   => false,
				'group_id'      => false,
				'privacy'       => false,
				'date_created'  => false,
			)
		);

		// Setup empty array from where query arguments.
		$where_args = array();

		// ID.
		if ( ! empty( $r['id'] ) ) {
			$where_args[] = $wpdb->prepare( 'id = %d', $r['id'] );
		}

		// blog ID.
		if ( ! empty( $r['blog_id'] ) ) {
			$where_args[] = $wpdb->prepare( 'blog_id = %d', $r['blog_id'] );
		}

		// attachment ID.
		if ( ! empty( $r['attachment_id'] ) ) {
			$where_args[] = $wpdb->prepare( 'attachment_id = %d', $r['attachment_id'] );
		}

		// User ID.
		if ( ! empty( $r['user_id'] ) ) {
			$where_args[] = $wpdb->prepare( 'user_id = %d', $r['user_id'] );
		}

		// title.
		if ( ! empty( $r['title'] ) ) {
			$where_args[] = $wpdb->prepare( 'title = %s', $r['title'] );
		}

		// folder ID.
		if ( ! empty( $r['folder_id'] ) ) {
			$where_args[] = $wpdb->prepare( 'folder_id = %d', $r['folder_id'] );
		}

		// activity ID.
		if ( ! empty( $r['activity_id'] ) ) {
			$where_args[] = $wpdb->prepare( 'activity_id = %d', $r['activity_id'] );
		}

		// group ID.
		if ( ! empty( $r['group_id'] ) ) {
			$where_args[] = $wpdb->prepare( 'group_id = %d', $r['group_id'] );
		}

		// privacy.
		if ( ! empty( $r['privacy'] ) ) {
			$where_args[] = $wpdb->prepare( 'privacy = %s', $r['privacy'] );
		}

		// Date created.
		if ( ! empty( $r['date_created'] ) ) {
			$where_args[] = $wpdb->prepare( 'date_created = %s', $r['date_created'] );
		}

		// Bail if no where arguments.
		if ( empty( $where_args ) ) {
			return false;
		}

		// Join the where arguments for querying.
		$where_sql = 'WHERE ' . join( ' AND ', $where_args );

		// Fetch all document being deleted so we can perform more actions.
		$documents = $wpdb->get_results( "SELECT * FROM {$bp->document->table_name} {$where_sql}" ); // db call ok; no-cache ok;

		/**
		 * Action to allow intercepting document items to be deleted.
		 *
		 * @param array $documents Array of document.
		 * @param array $r         Array of parsed arguments.
		 *
		 * @since BuddyBoss 1.4.0
		 */
		do_action_ref_array( 'bp_document_before_delete', array( $documents, $r ) );

		// Attempt to delete document from the database.
		$deleted = $wpdb->query( "DELETE FROM {$bp->document->table_name} {$where_sql}" );           // db call ok; no-cache ok;

		// Bail if nothing was deleted.
		if ( empty( $deleted ) ) {
			return false;
		}

		/**
		 * Action to allow intercepting document items just deleted.
		 *
		 * @param array $documents Array of document.
		 * @param array $r         Array of parsed arguments.
		 *
		 * @since BuddyBoss 1.4.0
		 */
		do_action_ref_array( 'bp_document_after_delete', array( $documents, $r ) );

		// Pluck the document IDs out of the $documents array.
		$document_ids   = wp_parse_id_list( wp_list_pluck( $documents, 'id' ) );
		$activity_ids   = wp_parse_id_list( wp_list_pluck( $documents, 'activity_id' ) );
		$attachment_ids = wp_parse_id_list( wp_list_pluck( $documents, 'attachment_id' ) );

		// Delete preview attachment.
		foreach ( $document_ids as $document_delete ) {
			$preview_id = bp_document_get_meta( $document_delete, 'preview_attachment_id', true );
			if ( $preview_id ) {
				wp_delete_attachment( $preview_id, true );
			}
		}

//		if ( ! empty( $document_ids ) ) {
//			// Loop through attachment ids and attempt to delete.
//			foreach ( $document_ids as $document ) {
//				$preview_attachment_id = bp_document_get_meta( $document, 'preview_attachment_id', true );
//				if ( $preview_attachment_id ) {
//					wp_delete_attachment( $preview_attachment_id, true );
//				}
//			}
//		}

		// Delete meta.
		if ( ! empty( $document_ids ) ) {
			// Delete all document meta entries for document items.
			self::delete_document_meta_entries( wp_list_pluck( $documents, 'id' ) );
		}

		// Handle accompanying attachments and meta deletion.
		if ( ! empty( $attachment_ids ) ) {

			// Loop through attachment ids and attempt to delete.
			foreach ( $attachment_ids as $attachment_id ) {

				if ( bp_is_active( 'activity' ) ) {
					$parent_activity_id = get_post_meta( $attachment_id, 'bp_document_parent_activity_id', true );
					if ( ! empty( $parent_activity_id ) ) {
						$activity_document_ids = bp_activity_get_meta( $parent_activity_id, 'bp_document_ids', true );
						if ( ! empty( $activity_document_ids ) ) {
							$activity_document_ids = explode( ',', $activity_document_ids );
							$activity_document_ids = array_diff( $activity_document_ids, $document_ids );
							if ( ! empty( $activity_document_ids ) ) {
								$activity_document_ids = implode( ',', $activity_document_ids );
								bp_activity_update_meta( $parent_activity_id, 'bp_document_ids', $activity_document_ids );
							} else {
								$activity_ids[] = $parent_activity_id;
							}
						}
					}
				}

				if ( empty( $from ) ) {
					wp_delete_attachment( $attachment_id, true );
				}
			}
		}

		// delete related activity.
		if ( ! empty( $activity_ids ) && bp_is_active( 'activity' ) ) {

			foreach ( $activity_ids as $activity_id ) {
				$activity = new BP_Activity_Activity( (int) $activity_id );

				// Check access.
				if ( bp_activity_user_can_delete( $activity ) ) {
					/** This action is documented in bp-activity/bp-activity-actions.php */
					do_action( 'bp_activity_before_action_delete_activity', $activity->id, $activity->user_id );

					// Deleting an activity comment.
					if ( 'activity_comment' === $activity->type ) {
						if ( bp_activity_delete_comment( $activity->item_id, $activity->id ) ) {
							/** This action is documented in bp-activity/bp-activity-actions.php */
							do_action( 'bp_activity_action_delete_activity', $activity->id, $activity->user_id );
						}

						// Deleting an activity.
					} else {
						if ( bp_activity_delete(
							array(
								'id'      => $activity->id,
								'user_id' => $activity->user_id,
							)
						) ) {
							/** This action is documented in bp-activity/bp-activity-actions.php */
							do_action( 'bp_activity_action_delete_activity', $activity->id, $activity->user_id );
						}
					}
				}
			}
		}

		return $document_ids;
	}