(* COCANWIKI - a wiki written in Objective CAML.
 * Written by Richard W.M. Jones <rich@merjis.com>.
 * Copyright (C) 2004 Merjis Ltd.
 * $Id: mailing_list_confirm.ml,v 1.6 2006/03/28 13:20:00 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

let run r (q : cgi) dbh hostid _ _ =
  let pending = q#param "p" in

  (* Get the relevant fields from the database. *)
  let rows = PGSQL(dbh) "select email from mailing_lists
                          where hostid = $hostid and pending = $pending" in

  let email =
    match rows with
    | [email] -> email
    | [] ->
	error ~close_button:true ~title:"Email already confirmed"
	  dbh hostid q
	  "It looks like that email address has already been confirmed.";
	return ()
    | _ -> assert false in

  (* Update the database. *)
  PGSQL(dbh) "update mailing_lists set pending = null
               where hostid = $hostid and pending = $pending";

  PGOCaml.commit dbh;

  (* Confirmed. *)
  let buttons = [ ok_button "/" ] in
  ok ~buttons ~title:"Confirmed"
    dbh hostid q ("Your email address has been confirmed.  " ^
		  "You are now on our mailing list.")

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