BP_Groups_Group::delete()

	public function delete() {
		global $wpdb;

		// Delete groupmeta for the group.
		groups_delete_groupmeta( $this->id );

		// Fetch the user IDs of all the members of the group.
		$user_ids    = BP_Groups_Member::get_group_member_ids( $this->id );
		$user_id_str = esc_sql( implode( ',', wp_parse_id_list( $user_ids ) ) );

		// Modify group count usermeta for members.
		$wpdb->query( "UPDATE {$wpdb->usermeta} SET meta_value = meta_value - 1 WHERE meta_key = 'total_group_count' AND user_id IN ( {$user_id_str} )" );

		// Now delete all group member entries.
		BP_Groups_Member::delete_all( $this->id );

		/**
		 * Fires before the deletion of a group.
		 *
		 * @since BuddyPress 1.2.0
		 *
		 * @param BP_Groups_Group $this     Current instance of the group item being deleted. Passed by reference.
		 * @param array           $user_ids Array of user IDs that were members of the group.
		 */
		do_action_ref_array( 'bp_groups_delete_group', array( &$this, $user_ids ) );

		wp_cache_delete( $this->id, 'bp_groups' );

		$bp = buddypress();

		// Finally remove the group entry from the DB.
		if ( !$wpdb->query( $wpdb->prepare( "DELETE FROM {$bp->groups->table_name} WHERE id = %d", $this->id ) ) ) {
			return false;
		}

		// delete group avatars
		$upload_path = bp_core_avatar_upload_path();
		system("rm -rf ".escapeshellarg( $upload_path . '/group-avatars/'. $this->id ));

		// delete group avatars
		$bp_attachments_uploads_dir = bp_attachments_uploads_dir_get();
		$type_dir = trailingslashit( $bp_attachments_uploads_dir['basedir'] );
		system("rm -rf ".escapeshellarg( $type_dir . 'groups/'. $this->id ) );

		return true;
	}