(* COCANWIKI scripts.
 * Written by Richard W.M. Jones <rich@merjis.com>.
 * Copyright (C) 2004 Merjis Ltd.
 * $Id: cocanwiki_emailnotify.ml,v 1.2 2004/09/07 14:58:34 rich Exp $
 *)

open Apache
open Registry
open Cgi
open Printf

(* This is where we coordinate email notification from various
 * scripts which create or update the wiki.
 *)
let email_notify ~subject ~body (dbh : Dbi.connection) hostid =
  (* Is anyone listed for email notification at this host? *)
  let sth = dbh#prepare_cached "select email, name from email_notify
	                         where hostid = ?" in
  sth#execute [`Int hostid];

  let to_addr = sth#map (function
			   | [`String email; `String name] ->
			       name ^ " <" ^ email ^ ">"
			   | [`String email; `Null] ->
			       email
			   | _ -> assert false) in

  if to_addr <> [] then (
    (* Prepare the body of the message.  The assumption is that
     * this takes time and database access, so we defer the creation
     * of the body until we know that someone needs to be notified.
     *)
    let body = body () in

    let subject = "Wiki notice: " ^ subject in

    (* Send the email. *)
    Sendmail.send_mail ~subject ~to_addr ~body ()
  )