(* COCANWIKI - a wiki written in Objective CAML.
 * Written by Richard W.M. Jones <rich@merjis.com>.
 * Copyright (C) 2004 Merjis Ltd.
 * $Id: send_feedback.ml,v 1.10 2006/07/31 09:49:43 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 ExtString

open Cocanwiki
open Cocanwiki_template
open Cocanwiki_ok

let run r (q : cgi) dbh hostid {hostname = hostname} user =
  let template = get_template dbh hostid "send_feedback.txt" in

  if q#param_true "cancel" then
    (* Request cancelled. *)
    q#redirect ("http://" ^ hostname);

  (* Get the feedback email for this host. *)
  let to_addr = List.hd (
    PGSQL(dbh)
      "select feedback_email from hosts where id = $hostid"
  ) in
  let to_addr = Option.get to_addr in

  (* Get the fields. *)
  let page = q#param "page" in
  let name = q#param "name" in
  let email = q#param "email" in
  let feedback = q#param "feedback" in

  template#set "page" page;
  template#set "name" name;
  template#set "email" email;
  template#set "feedback" feedback;

  (* Get the IP address for logging purposes. *)
  let ip =
    try Connection.remote_ip (Request.connection r) with Not_found -> "" in

  (* Get the User-Agent string.  Consider in future rejecting spammers
   * who don't set User-Agent.
   *)
  let ua =
    try Table.get (Request.headers_in r) "User-Agent" with Not_found -> "" in

  (* Get the user details, if any. *)
  let username =
    match user with
	Anonymous -> "anonymous"
      | User (userid, username, _, _) ->
	  sprintf "%s (%ld)" username userid in

  template#set "ip" ip;
  template#set "ua" ua;
  template#set "username" username;
  template#set "hostname" hostname;

  (* Send the feedback email. *)
  let subject = "Wiki feedback: Feedback about " ^ page ^ " page" in
  let body = template#to_string in

  let to_addrs = [ "", to_addr ] in
  let content_type =
    "text/plain", ["charset", Mimestring.mk_param "UTF-8"] in

  let msg = Netsendmail.compose ~subject ~to_addrs ~content_type body in
  Netsendmail.sendmail msg;

  (* Confirm. *)
  ok ~title:"Thank you for your feedback" ~buttons:[ok_button "/"]
    dbh hostid q "An email has been sent to the site administrators."

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