/**
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * 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; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * AUTHORS
 * Maciek Borzecki <maciek.borzecki (at] gmail.com>
 * gyan000 <gyan000 (at] ijaz.fr>
 */

namespace MConnect {

    public class TransferManager : Object {

        public const uint16 PORT_MIN = 9970;
        public const uint16 PORT_MAX = 9975;

        public signal void new_transfer (TransferInterface job);

        public TransferManager () {
        }

        public void push_job (TransferInterface job) {
            debug ("New transfer job.");
            new_transfer (job);
        }

        public SocketService ? make_listener (out uint16 listen_port) {
            var ss = new SocketService ();
            for (var port = PORT_MIN; port <= PORT_MAX; port++) {
                var added = false;
                try {
                    added = ss.add_inet_port (port, null);
                } catch (Error e) {
                    if (e is IOError.ADDRESS_IN_USE) {
                        warning ("Port %u in use, trying another.", port);
                    }
                }
                if (added == true) {
                    debug ("Allocated listener on port %u", port);
                    listen_port = port;
                    return ss;
                }
            }
            ss.close ();
            warning ("Could not find a free port to listen on.");
            return null;
        }
    }
}