/*
 *  dolmetschctl
 *
 *
 *  Copyright (C) 2015 Christian Pointner <equinox@spreadspace.org>
 *
 *  This file is part of dolmetschctl.
 *
 *  dolmetschctl 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 3 of the License, or
 *  any later version.
 *
 *  dolmetschctl 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 dolmetschctl. If not, see <http://www.gnu.org/licenses/>.
 */

#include "config.h"

#include <stdio.h>
#include <error.h>
#include <assert.h>

#include "osc.h"


static void print_error(int num, const char *msg, const char *path)
{
  error(0, 0, "liblo server error %d in path %s: %s", num, path, msg);
}

static int generic_handler(const char *path, const char *types, lo_arg ** argv,
                    int argc, void *data, void *user_data)
{
  int i;

  printf("OSC(%s):%s", path, argc ? " ": " <no arguments>\n");
  for(i = 0; i < argc; i++) {
    printf("arg %d '%c'", i, types[i]);
    lo_arg_pp((lo_type)types[i], argv[i]);
    printf("%s", i >= (argc-1) ? "\n" : ", ");
  }

  return 1;
}


int osc_init(osc_t* o, const char* port)
{
  assert(o != NULL);

  o->server_ = lo_server_new(port, print_error);
  if(!o->server_)
    return -1;

  if(!lo_server_add_method(o->server_, NULL, NULL, generic_handler, NULL))
    return -1;

  return 0;
}


int osc_get_poll_fd_count(osc_t* o)
{
  return 1;
}

int osc_get_poll_fds(osc_t* o, struct pollfd *pfds, int npfds)
{
  assert(o && pfds && npfds == 1);

  pfds[0].fd = lo_server_get_socket_fd(o->server_);
  pfds[0].events = POLLIN;
  pfds[0].revents = 0;

  return 0;
}

int osc_handle_revents(osc_t* o, struct pollfd *pfds, int npfds, mixer_t* x)
{
  assert(o && pfds && npfds == 1);

  if(pfds[0].revents & (POLLERR | POLLHUP | POLLNVAL)) {
    error(0, 0, "OSC: got POLLERR, POLLHUP or POLLNVAL");
    return -1;
  }
  if(!(pfds[0].revents & POLLIN))
    return 0;

  lo_server_recv_noblock(o->server_, 0);

  return 0;
}