(* COCANWIKI - a wiki written in Objective CAML.
 * Written by Richard W.M. Jones <rich@merjis.com>.
 * Copyright (C) 2004 Merjis Ltd.
 * $Id: cocanwiki_create_host.ml,v 1.8 2006/09/11 09:39:33 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

let create_host dbh canonical_hostname hostnames template
    title username password force_password_change email =
  PGSQL(dbh) "set constraints hosts_hostname_cn deferred";
  PGSQL(dbh)
    "insert into hosts (canonical_hostname) values ($canonical_hostname)";

  let hostid = PGOCaml.serial4 dbh "hosts_id_seq" in

  let insert name =
    PGSQL(dbh) "insert into hostnames (hostid, name) values ($hostid, $name)"
  in
  insert canonical_hostname;
  List.iter insert hostnames;

  (* Are we creating a blank site or copying a template? *)
  if template = 0l then (
    (* Blank site. *)
    PGSQL(dbh) "insert into pages (hostid, url, title,
                  description) values ($hostid, 'index', $title, $title)"
  ) else (
    (* Copy from template. *)

    (* XXX - See tools/copy_host for a more reliable way to do this - XXX. *)

    (* Use low-level PG'OCaml calls to make a duplicate of the
     * old hosts row where id = template.
     *
     * But don't duplicate id (it's the new site number), or
     * canonical_hostname (the hostname has changed) or
     * is_template (new site is a copy of a template, not a template).
     *)
    let query = "select * from hosts where id = $1" in
    PGOCaml.prepare dbh ~query ();
    let types = Option.get (snd (PGOCaml.describe_statement dbh ())) in
    let params = [Some (Int32.to_string template)] in
    let fields = List.hd (PGOCaml.execute dbh ~params ()) in

    List.iter (
      fun (field, {PGOCaml.name = name}) ->
	if name <> "id" && name <> "canonical_hostname" &&
	  name <> "is_template" then (
	    let query =
	      sprintf "update hosts set %s = $1 where id = $2" name in
	    PGOCaml.prepare dbh ~query ();
	    let params = [ field; Some (Int32.to_string hostid) ] in
	    ignore (PGOCaml.execute dbh ~params ())
	  )
    ) (List.combine fields types);

    (* Copy pages. *)
    PGSQL(dbh)
      "insert into pages (hostid, url, title, description, keywords,
                          redirect, css, noodp)
       select $hostid, url, title, description, keywords, redirect, css,
              noodp
         from pages
        where hostid = $template and url is not null";

    (* Copy page contents. *)
    PGSQL(dbh)
      "insert into contents (pageid, ordering, sectionname, content,
                             divname, divclass, jsgo)
       select (select id from pages where hostid = $hostid and url = p.url),
              c.ordering, c.sectionname, c.content, c.divname, c.divclass,
              c.jsgo
         from contents c, pages p
        where c.pageid = p.id and p.hostid = $template and p.url is not null";

    (* Copy files and images. *)
    PGSQL(dbh)
      "insert into files (hostid, name, content, title, mime_type)
       select $hostid, name, content, title, mime_type
         from files
        where hostid = $template and name is not null";

    PGSQL(dbh)
      "insert into images (hostid, name, image, width, height, alt, title,
                           longdesc, class, mime_type, thumbnail,
                           tn_width, tn_height, tn_mime_type)
       select $hostid, name, image, width, height, alt, title, longdesc, class,
              mime_type, thumbnail, tn_width, tn_height, tn_mime_type
         from images
        where hostid = $template and name is not null";

    (* Copy sitemenu. *)
    PGSQL(dbh)
      "insert into sitemenu (hostid, url, label, ordering)
       select $hostid, url, label, ordering from sitemenu
        where hostid = $template";

    (* Copy contacts. *)
    PGSQL(dbh)
      "insert into contacts (hostid, name, subject)
       select $hostid, name, subject from contacts where hostid = $template";

    PGSQL(dbh)
      "insert into contact_emails (contactid, email)
       select (select id from contacts
               where hostid = $hostid and name = c.name), ce.email
           from contact_emails ce, contacts c
          where ce.contactid = c.id and c.hostid = $template";

    (* XXX Macros. *)

    (* Set the title of the index page. *)
    PGSQL(dbh)
      "update pages set title = $title
        where hostid = $hostid and url = 'index'"
  );

  (* Create the administrator user. *)
  PGSQL(dbh)
    "insert into users (hostid, name, password,
                        force_password_change, email, can_manage_users)
     values ($hostid, $username, $password, $force_password_change,
             $?email, true)";

  hostid