(* COCANWIKI - a wiki written in Objective CAML.
 * Written by Richard W.M. Jones <rich@merjis.com>.
 * Copyright (C) 2004 Merjis Ltd.
 * $Id: create_user.ml,v 1.8 2006/07/26 16:34:18 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

let run r (q : cgi) dbh hostid _ _ =
  let username = trim (q#param "username") in
  let password1 = trim (q#param "password1") in
  let password2 = trim (q#param "password2") in

  if username = "" || password1 = "" || password2 = "" then (
    error ~back_button:true ~title:"Bad username or password"
      dbh hostid q "The username or password you gave is empty.";
    return ()
  );

  if password1 <> password2 then (
    error ~back_button:true ~title:"Passwords don't match"
      dbh hostid q "The two passwords you gave aren't identical.";
    return ()
  );

  let password = password1 in

  if UTF8.length username > 32 || UTF8.length password > 128 then (
    error ~back_button:true ~title:"Username or password too long"
      dbh hostid q "Usernames should be less than 32 characters long.  For passwords we let you have a generous 128 characters.";
    return ()
  );

  (* Not a duplicate? *)
  let rows = PGSQL(dbh)
    "select id from users where hostid = $hostid and name = $username" in

  (match rows with
   | [_] ->
       error ~back_button:true ~title:"Username already taken"
	 dbh hostid q "Someone has already taken that username.";
       return ()
   | [] -> ()
   | _ -> assert false
  );

  let can_edit = q#param_true "can_edit" in
  let can_manage_users = q#param_true "can_manage_users" in
  let can_manage_contacts = q#param_true "can_manage_contacts" in
  let can_manage_site = q#param_true "can_manage_site" in
  let can_edit_global_css = q#param_true "can_edit_global_css" in
  let can_import_mail = q#param_true "can_import_mail" in
  let can_edit_macros = q#param_true "can_edit_macros" in
  let force_password_change = q#param_true "force_password_change" in

  (* Create the user account. *)
  PGSQL(dbh)
    "insert into users (name, password,
                        hostid, can_edit, can_manage_users,
                        can_manage_contacts, can_manage_site,
                        can_edit_global_css, can_import_mail,
                        can_edit_macros,
                        force_password_change)
     values ($username, $password, $hostid, $can_edit, $can_manage_users,
             $can_manage_contacts, $can_manage_site,
             $can_edit_global_css, $can_import_mail,
             $can_edit_macros,
             $force_password_change)";

  PGOCaml.commit dbh;

  let buttons = [ ok_button "/_users" ] in

  ok ~title:"Account created" ~buttons
    dbh hostid q ("An account was created for " ^ username ^ ".")

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