(* COCANWIKI - a wiki written in Objective CAML.
 * Written by Richard W.M. Jones <rich@merjis.com>.
 * Copyright (C) 2004 Merjis Ltd.
 * $Id: admin.ml,v 1.6 2004/09/09 12:21:22 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_template
open Cocanwiki_date

let template = _get_template "admin/admin.html"

let run r (q : cgi) (dbh : Dbi.connection) _ _ _ =
  (* Select out the alternative hostnames. *)
  let sth = dbh#prepare_cached
	      "select hs.hostid, hs.name from hostnames hs
                where not exists (select 1 from hosts
                                   where id = hs.hostid
                                     and canonical_hostname = hs.name)" in
  sth#execute [];

  let hostnames = sth#map (function [`Int hostid; `String name] ->
			     hostid, name
			     | _ -> assert false) in

  (* Pull out the details of all the wikis on the server. *)
  let sth = dbh#prepare_cached
	      "select h.id, h.canonical_hostname,
                      (select count(*) from pages
                        where hostid = h.id and url is not null),
                      (select max(last_modified_date) from pages
                        where hostid = h.id and url is not null)
                 from hosts h
                order by 2" in
  sth#execute [];

  let table =
    sth#map
      (function [`Int id; `String canonical_hostname;
		 (`Null | `Int _) as page_count;
		 (`Null | `Timestamp _) as last_modified_date] ->
	 let page_count = match page_count with
	     `Null -> 0
	   | `Int n -> n in
	 let last_modified_date = match last_modified_date with
	     `Null -> "-"
	   | `Timestamp date -> printable_date date in

	 let hostnames =
	   List.filter (fun (i, _) -> i = id) hostnames in
	 let hostnames =
	   List.map (fun (_, hostname) ->
		       [ "hostname", Template.VarString hostname ])
	     hostnames in

	 [ "id", Template.VarString (string_of_int id);
	   "canonical_hostname", Template.VarString canonical_hostname;
	   "page_count", Template.VarString (string_of_int page_count);
	   "last_modified_date", Template.VarString last_modified_date;
	   "hostnames", Template.VarTable hostnames ]

	 | _ -> assert false) in

  template#table "hosts" table;

  q#template template

let () =
  register_script run