/*
 * Copyright 2016 Dius Computing Pty Ltd. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the
 *   distribution.
 * - Neither the name of the copyright holders nor the names of
 *   its contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * @author Johny Mattsson <jmattsson@dius.com.au>
 */
#include "module.h"
#include "lauxlib.h"
#include "lextra.h"
#include "wifi_common.h"

static int wifi_getmode (lua_State *L)
{
  wifi_mode_t mode;
  esp_err_t err = esp_wifi_get_mode (&mode);
  if (err != ESP_OK)
    return luaL_error (L, "failed to get mode, code %d", err);
  lua_pushinteger (L, mode);
  return 1;
}

static int wifi_getchannel (lua_State *L)
{
  uint8_t primary;
  wifi_second_chan_t secondary;
  esp_err_t err = esp_wifi_get_channel (&primary, &secondary);
  if (err != ESP_OK)
    return luaL_error (L, "failed to get channel, code %d", err);
  lua_pushinteger (L, primary);
  lua_pushinteger (L, secondary);
  return 2;
}

static int wifi_mode (lua_State *L)
{
  int mode = luaL_checkinteger (L, 1);
  bool save = luaL_optbool (L, 2, DEFAULT_SAVE);
  SET_SAVE_MODE(save);
  esp_err_t err;
  switch (mode)
  {
    case WIFI_MODE_NULL:
    case WIFI_MODE_STA:
    case WIFI_MODE_AP:
    case WIFI_MODE_APSTA:
      return ((err = esp_wifi_set_mode (mode)) == ESP_OK) ?
        0 : luaL_error (L, "failed to set mode, code %d", err);
    default:
      return luaL_error (L, "invalid wifi mode %d", mode);
  }
}


static int wifi_start (lua_State *L)
{
  esp_err_t err = esp_wifi_start ();
  return (err == ESP_OK) ?
    0 : luaL_error(L, "failed to start wifi, code %d", err);
}


static int wifi_stop (lua_State *L)
{
  esp_err_t err = esp_wifi_stop ();
  return (err == ESP_OK) ?
    0 : luaL_error (L, "failed to stop wifi, code %d", err);
}



extern void wifi_ap_init (void);
extern void wifi_sta_init (void);
static int wifi_init (lua_State *L)
{
  wifi_ap_init ();
  wifi_sta_init ();

  wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
  esp_err_t err = esp_wifi_init (&cfg);
  return (err == ESP_OK) ?
    0 : luaL_error (L, "failed to init wifi, code %d", err);
}


extern const LUA_REG_TYPE wifi_sta_map[];
extern const LUA_REG_TYPE wifi_ap_map[];

static const LUA_REG_TYPE wifi_map[] =
{
  { LSTRKEY( "getchannel"),   LFUNCVAL( wifi_getchannel )     },
  { LSTRKEY( "getmode" ),     LFUNCVAL( wifi_getmode )        },
  { LSTRKEY( "mode" ),        LFUNCVAL( wifi_mode )           },
  { LSTRKEY( "start" ),       LFUNCVAL( wifi_start )          },
  { LSTRKEY( "stop" ),        LFUNCVAL( wifi_stop )           },

  { LSTRKEY( "sta" ),         LROVAL( wifi_sta_map )          },
  { LSTRKEY( "ap" ),          LROVAL( wifi_ap_map )           },


  { LSTRKEY( "NULLMODE" ),    LNUMVAL( WIFI_MODE_NULL )       },
  { LSTRKEY( "STATION" ),     LNUMVAL( WIFI_MODE_STA )        },
  { LSTRKEY( "SOFTAP" ),      LNUMVAL( WIFI_MODE_AP )         },
  { LSTRKEY( "STATIONAP" ),   LNUMVAL( WIFI_MODE_APSTA )      },

  { LSTRKEY( "AUTH_OPEN" ),           LNUMVAL( WIFI_AUTH_OPEN )         },
  { LSTRKEY( "AUTH_WEP" ),            LNUMVAL( WIFI_AUTH_WEP )          },
  { LSTRKEY( "AUTH_WPA_PSK" ),        LNUMVAL( WIFI_AUTH_WPA_PSK )      },
  { LSTRKEY( "AUTH_WPA2_PSK" ),       LNUMVAL( WIFI_AUTH_WPA2_PSK )     },
  { LSTRKEY( "AUTH_WPA_WPA2_PSK" ),   LNUMVAL( WIFI_AUTH_WPA_WPA2_PSK ) },

  { LSTRKEY( STR_WIFI_SECOND_CHAN_NONE ),  LNUMVAL( WIFI_SECOND_CHAN_NONE )  },
  { LSTRKEY( STR_WIFI_SECOND_CHAN_ABOVE ), LNUMVAL( WIFI_SECOND_CHAN_ABOVE )  },
  { LSTRKEY( STR_WIFI_SECOND_CHAN_BELOW ), LNUMVAL( WIFI_SECOND_CHAN_BELOW )  },

  { LNILKEY, LNILVAL }
};

NODEMCU_MODULE(WIFI, "wifi", wifi_map, wifi_init);