(* COCANWIKI - a wiki written in Objective CAML.
 * Written by Richard W.M. Jones <rich@merjis.com>.
 * Copyright (C) 2004 Merjis Ltd.
 * $Id: what_links_here.ml,v 1.4 2004/10/10 14:44:50 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 Apache
open Registry
open Cgi
open Printf

open Cocanwiki
open Cocanwiki_template
open Cocanwiki_links

let run r (q : cgi) (dbh : Dbi.connection) hostid _ _ =
  let template = get_template dbh hostid "what_links_here.html" in

  let page = q#param "page" in
  template#set "page" page;

  let sth = dbh#prepare_cached "select title from pages
                                 where hostid = ? and url = ?" in
  sth#execute [`Int hostid; `String page];

  let title = sth#fetch1string () in
  template#set "title" title;

  let pages = what_links_here dbh hostid page in
  let table =
    List.map (fun (page, title) ->
		[ "page", Template.VarString page;
		  "title", Template.VarString title ]) pages in

  template#table "pages" table;
  template#conditional "pages_empty" (table = []);

  (* Is the page in the site menu?  If so, then every other page
   * links here, so we should say so.
   *)
  let sth = dbh#prepare_cached "select 1 from sitemenu
                                 where hostid = ? and url = ?" in
  sth#execute [`Int hostid; `String page];

  let in_sitemenu = try sth#fetch1int () = 1 with Not_found -> false in
  template#conditional "in_sitemenu" in_sitemenu;

  q#template template

let () =
  register_script ~restrict:[CanView] run