(* COCANWIKI - a wiki written in Objective CAML.
 * Written by Richard W.M. Jones <rich@merjis.com>.
 * Copyright (C) 2004 Merjis Ltd.
 * $Id: recent_rss.ml,v 1.4 2006/03/28 16:24:08 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_date

let limit = 30_l

let run r (q : cgi) dbh hostid {hostname = hostname} _ =
  let template = get_template dbh hostid "recent_rss.xml" in

  template#set "hostname" hostname;

  (* Get the changes. *)
  let rows =
    PGSQL(dbh) "nullable-results"
      "select p.id, p.url, p.url_deleted, p.title, p.last_modified_date,
              p.logged_ip, u.name
         from pages p left outer join users u on p.logged_user = u.id
        where p.hostid = $hostid
        order by p.last_modified_date desc
        limit $limit" in

  let table =
    List.map
      (function
	 | (Some version, Some url, _, Some title,
	    Some last_modified_date, logged_ip, logged_user) ->
	     let date = printable_date_time last_modified_date in
	     let has_logged_ip, logged_ip =
	       match logged_ip with
		   None -> false, ""
		 | Some ip -> true, ip in
	     let has_logged_user, logged_user =
	       match logged_user with
		   None -> false, ""
		 | Some name -> true, name in
	     [ "version", Template.VarString (Int32.to_string version);
	       "url", Template.VarString url;
	       "title", Template.VarString title;
	       "last_modified_date", Template.VarString date;
	       "has_logged_ip", Template.VarConditional has_logged_ip;
	       "logged_ip", Template.VarString logged_ip;
	       "has_logged_user", Template.VarConditional has_logged_user;
	       "logged_user", Template.VarString logged_user;
	       "is_live", Template.VarConditional true ]
	 | (Some version, None, Some url, Some title,
	    Some last_modified_date, logged_ip, logged_user) ->
	     let date = printable_date_time last_modified_date in
	     let has_logged_ip, logged_ip =
	       match logged_ip with
		   None -> false, ""
		 | Some ip -> true, ip in
	     let has_logged_user, logged_user =
	       match logged_user with
		   None -> false, ""
		 | Some name -> true, name in
	     [ "version", Template.VarString (Int32.to_string version);
	       "url", Template.VarString url;
	       "title", Template.VarString title;
	       "last_modified_date", Template.VarString date;
	       "has_logged_ip", Template.VarConditional has_logged_ip;
	       "logged_ip", Template.VarString logged_ip;
	       "has_logged_user", Template.VarConditional has_logged_user;
	       "logged_user", Template.VarString logged_user;
	       "is_live", Template.VarConditional false ]
	 | _ -> assert false) rows in

  template#table "recent_changes" table;

  q#template ~content_type:"application/rss+xml" template

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