(* COCANWIKI - a wiki written in Objective CAML.
 * Written by Richard W.M. Jones <rich@merjis.com>.
 * Copyright (C) 2004 Merjis Ltd.
 * $Id: cocanwiki_pages.mli,v 1.1 2004/10/11 14:13:04 rich Exp $
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *)

open Cocanwiki

(* Page (URL) or title. *)
type pt = Page of string | Title of string

type model = {
  id : int;				(* Original page ID (0 = none). *)
  pt : pt;				(* Page of title (only used if id=0) *)
  description : string;			(* Description. *)
  redirect : string;			(* Redirect to ("" = none). *)
  contents : (string * string * string) list;
					(* (sectionname, divname, content)
					 * for each section. *)
}

exception SaveURLError
exception SaveConflict of int * int * string * string

val new_page : pt -> model
  (** Create a new, blank page. *)

val new_page_with_title : string -> model
  (** Friendlier version of {!new_page} which creates a new page from
    * a title and begins an introductory paragraph for the user.
    *)

val load_page : Dbi.connection -> int -> url:string -> ?version:int -> unit -> model
  (** Load a page from the database.  A non-current version can be
    * specified with the optional [?version] parameter, otherwise the
    * latest version is loaded.
    *
    * @raise Not_found If the page cannot be found.
    *)

val save_page : Dbi.connection -> int -> ?user:user_t -> ?r:Apache.Request.t -> model -> string * int
  (** Save a page.  If the page is new, this creates a new page in the
    * database.  If the page is old, then the page is edited.
    *
    * Notification emails are not sent.
    *
    * @raise SaveURLError Duplicate URL or bad URL (happens only when creating
    *   new pages).
    *
    * @raise SaveConflict If there was an editing conflict.
    *
    * @return (url, pageid)
    *)