(* COCANWIKI - a wiki written in Objective CAML.
 * Written by Richard W.M. Jones <rich@merjis.com>.
 * Copyright (C) 2004 Merjis Ltd.
 * $Id: create.ml,v 1.8 2004/09/23 11:56:47 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_emailnotify
open Cocanwiki_ok

let run r (q : cgi) (dbh : Dbi.connection) hostid {hostname = hostname} user =
  (* Get the page title. *)
  let title = q#param "title" in

  let url =
    match Wikilib.generate_url_of_title dbh hostid title with
	Wikilib.GenURL_OK url -> url
      | Wikilib.GenURL_TooShort | Wikilib.GenURL_BadURL ->
	  error ~back_button:true ~title:"Bad page name"
	    q "The page name supplied is too short or invalid.";
	  return ()
      | Wikilib.GenURL_Duplicate url ->
	  q#redirect ("http://" ^ hostname ^ "/" ^ url);
	  return () in

  (* Description field must contain something. *)
  let description = q#param "description" in
  if description = "" then (
    error ~back_button:true ~title:"Description field missing"
      q "You must write a brief description for search engines and
         directories.";
    return ()
  );

  (* Get the IP address of the user, if available. *)
  let logged_ip =
    try `String (Connection.remote_ip (Request.connection r))
    with Not_found -> `Null in

  let logged_user =
    match user with
      | User (id, _, _) -> `Int id
      | _ -> `Null in

  (* Create the page. *)
  let sth = dbh#prepare_cached "insert into pages (hostid, url, title,
                                  description, logged_ip, logged_user)
                                values (?, ?, ?, ?, ?, ?)" in
  sth#execute [`Int hostid; `String url; `String title; `String description;
	       logged_ip; logged_user];

  let pageid = sth#serial "pages_id_seq" in

  (* Create a single section. *)
  let content = "Write some content here." in

  let sth = dbh#prepare_cached "insert into contents (pageid, ordering,
                                  sectionname, content) values (?, 1, ?, ?)" in
  sth#execute [`Int pageid; `Null; `String content];

  (* Commit. *)
  dbh#commit ();

  (* Email notification, if anyone is listed for this host. *)
  let subject = "Page " ^ url ^ " has been created" in
  let body = fun () ->
    "Page: http://" ^ hostname ^ "/" ^ url ^ "\n" in

  email_notify ~subject ~body dbh hostid;

  (* Redirect to the editing page. *)
  q#redirect ("http://" ^ hostname ^ "/" ^ url ^ "/edit")

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