(* COCANWIKI - a wiki written in Objective CAML.
 * Written by Richard W.M. Jones <rich@merjis.com>.
 * Copyright (C) 2004 Merjis Ltd.
 * $Id: delete_file.ml,v 1.10 2006/03/27 18:09:46 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_emailnotify

let run r (q : cgi) dbh hostid { hostname = hostname } user=
  let id = Int32.of_string (q#param "id") in

  if q#param_true "yes" then (
    (* Get the name. *)
    let rows = PGSQL(dbh) "select coalesce (name, name_deleted)
                             from files
                            where hostid = $hostid and id = $id" in
    let name = Option.get (List.hd rows) in

    (* Delete the file. *)
    PGSQL(dbh) "update files
                   set name_deleted = name, name = null
                 where hostid = $hostid and id = $id
                   and name is not null";

    PGOCaml.commit dbh;

    (* Email notify. *)
    let subject = "File " ^ name ^ "#" ^ Int32.to_string id ^
		  " has been deleted." in
    let body = fun () -> "Page: http://" ^ hostname ^ "/_files?deleted=1" in

    email_notify ~body ~subject ~user dbh hostid;

    (* Done. *)
    let buttons = [ ok_button "/_files" ] in
    ok ~title:"File deleted" ~buttons
      dbh hostid q "File was deleted successfully."
  ) else
    q#redirect ("http://" ^ hostname ^ "/_files")

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