(* COCANWIKI - a wiki written in Objective CAML.
 * Written by Richard W.M. Jones <rich@merjis.com>.
 * Copyright (C) 2004 Merjis Ltd.
 * $Id: edit_contact.ml,v 1.3 2005/03/31 14:24:04 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 split_re = Pcre.regexp "[\\r\\n,;]+"

let run r (q : cgi) (dbh : Dbi.connection) hostid _ _ =
  let id = int_of_string (q#param "id") in

  let name = trim (q#param "name") in
  let subject = trim (q#param "subject") in

  let emails = try q#param "emails" with Not_found -> "" in

  let emails = Pcre.split ~rex:split_re emails in
  let emails = List.map trim emails in
  let emails = List.filter ((<>) "") emails in

  if name = "" then (
    error ~back_button:true ~title:"Name field missing"
      q "You must name your contact form.";
    return ()
  );

  if subject = "" then (
    error ~back_button:true ~title:"Subject line missing"
      q "You must give a subject line, which appears on contact emails.";
    return ()
  );

  if emails = [] then (
    error ~back_button:true ~title:"No email addresses"
      q ("There are no email addresses listed for this contact form.  You " ^
	 "must list at least one valid email address.");
    return ()
  );

  (* Need to verify that the contact belongs to the host. *)
  let sth = dbh#prepare_cached "select 1 from contacts
                                 where hostid = ? and id = ?" in
  sth#execute [`Int hostid; `Int id];

  assert (sth#fetch1int () = 1);

  (* Update the database. *)
  let sth = dbh#prepare_cached "update contacts set name = ?, subject = ?
                                 where hostid = ? and id = ?" in
  sth#execute [`String name; `String subject; `Int hostid; `Int id];

  let sth =
    dbh#prepare_cached "delete from contact_emails where contactid = ?" in
  sth#execute [`Int id];

  let sth = dbh#prepare_cached "insert into contact_emails (contactid, email)
                                values (?, ?)" in
  List.iter (fun email ->
	       sth#execute [`Int id; `String email]) emails;

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

  let buttons = [
    ok_button "/_bin/contacts.cmo";
    { Template.StdPages.label = "   View contact form   ";
      Template.StdPages.link = "/_bin/contact_show.cmo";
      Template.StdPages.method_ = None;
      Template.StdPages.params = [ "id", string_of_int id ] } ] in
  ok ~title:"Contact form edited" ~buttons
    q "The contact form was edited."

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