(* COCANWIKI - a wiki written in Objective CAML.
 * Written by Richard W.M. Jones <rich@merjis.com>.
 * Copyright (C) 2004 Merjis Ltd.
 * $Id: edit_host_css.ml,v 1.7 2006/12/06 09:46:57 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_ok
open Cocanwiki_strings

type stylesheet = Global | Ie6_fixes | Ie7_fixes
let string_of_stylesheet = function
  | Global -> "global"
  | Ie6_fixes -> "ie6_fixes"
  | Ie7_fixes -> "ie7_fixes"
let stylesheet_of_string = function
  | "global" -> Global
  | "ie6_fixes" -> Ie6_fixes
  | "ie7_fixes" -> Ie7_fixes
  | str -> failwith ("stylesheet_of_string: unknown stylesheet: " ^ str)

let run r (q : cgi) dbh hostid _ _ =
  (* Which stylesheet to edit? *)
  let css = if q#param_exists "css" then q#param "css" else "global" in
  let css = stylesheet_of_string css in

  (* Get the updated content. *)
  let content = q#param "content" in
  let content = if string_is_whitespace content then None else Some content in

  (* XXX We should version the global stylesheet.  However this requires
   * some fairly non-trivial coding.
   *)
  (match css with
   | Global ->
       PGSQL(dbh)
	 "update hosts set css = $?content where id = $hostid"
   | Ie6_fixes ->
       PGSQL(dbh)
	 "update hosts set ie6_fixes_css = $?content where id = $hostid"
   | Ie7_fixes ->
       PGSQL(dbh)
	 "update hosts set ie7_fixes_css = $?content where id = $hostid"
  );

  PGOCaml.commit dbh;

  let buttons = [
    ok_button "/_bin/host_menu.cmo";
    { Template.StdPages.label = "Edit stylesheet again";
      Template.StdPages.link = "/_bin/edit_host_css_form.cmo";
      Template.StdPages.method_ = None;
      Template.StdPages.params = [ "css", string_of_stylesheet css ] }
  ] in

  ok ~title:"Stylesheet changed" ~buttons
    r dbh hostid q
    ("The stylesheet was changed successfully.  " ^
     "Note: You must RELOAD the page to see changes to stylesheets.")

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