(* COCANWIKI - a wiki written in Objective CAML.
 * Written by Richard W.M. Jones <rich@merjis.com>.
 * Copyright (C) 2004 Merjis Ltd.
 * $Id: rebuild_links.ml,v 1.7 2006/07/27 16:46:55 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 hostid _ _ =
  let template_start = _get_template "rebuild_links_start.html" in
  let template = _get_template "rebuild_links.html" in
  let template_done = _get_template "rebuild_links_done.html" in

  (* Delete entries in the old links table. *)
  PGSQL(dbh) "delete from links where hostid = $hostid";

  (* Pull out the list of sections to process. *)
  let sections =
    PGSQL(dbh)
      "select c.content, c.ordering, p.url from contents c, pages p
        where c.pageid = p.id
          and p.hostid = $hostid
          and p.url is not null
          and p.redirect is null
        order by p.url, c.ordering" in

  let total_sections = List.length sections in

  q#header ();
  ignore (print_string r template_start#to_string);

  (* Process each section ... *)
  let i = ref 0 in

  List.iter (
    fun (content, ordering, url) ->
      let url = Option.get url in
      let pc = 100 * !i / total_sections in incr i;
      template#set "ordering" (Int32.to_string ordering);
      template#set "url" url;
      template#set "pc" (string_of_int pc);
      ignore (print_string r template#to_string);

      let links = get_links_from_section r dbh hostid content in
      List.iter (insert_link dbh hostid url) links
  ) sections;

  (* Finish off. *)
  PGOCaml.commit dbh;

  ignore (print_string r template_done#to_string)

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