/*
  xdrv_05_irremote.ino - infra red support for Sonoff-Tasmota

  Copyright (C) 2019  Heiko Krupp, Lazar Obradovic and Theo Arends

  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 3 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.  If not, see <http://www.gnu.org/licenses/>.
*/

#if defined(USE_IR_REMOTE) && !defined(USE_IR_REMOTE_FULL)
/*********************************************************************************************\
 * IR Remote send and receive using IRremoteESP8266 library
\*********************************************************************************************/

#define XDRV_05             5

#include <IRremoteESP8266.h>

enum IrErrors { IE_NO_ERROR, IE_INVALID_RAWDATA, IE_INVALID_JSON, IE_SYNTAX_IRSEND, IE_SYNTAX_IRHVAC };

const char kIrRemoteCommands[] PROGMEM = "|"  // No prefix
#ifdef USE_IR_HVAC
  D_CMND_IRHVAC "|"
#endif
  D_CMND_IRSEND ;

void (* const IrRemoteCommand[])(void) PROGMEM = {
#ifdef USE_IR_HVAC
  &CmndIrHvac,
#endif
  &CmndIrSend };

// Based on IRremoteESP8266.h enum decode_type_t
static const uint8_t MAX_STANDARD_IR = SHARP;   // this is the last code mapped to decode_type_t
enum IrVendors { IR_BASE = MAX_STANDARD_IR,
#ifdef USE_IR_SEND_PIONEER
                 IR_PIONEER,
#endif  // USE_IR_SEND_PIONEER
};
const char kIrRemoteProtocols[] PROGMEM =
  "UNKNOWN|RC5|RC6|NEC|SONY|PANASONIC|JVC|SAMSUNG|WHYNTER|AIWA_RC_T501|LG|SANYO|MITSUBISHI|DISH|SHARP"
  // now allow for other codes beyond the first series;
#ifdef USE_IR_SEND_PIONEER
  "|PIONEER"
#endif  // USE_IR_SEND_PIONEER
  ;

/*********************************************************************************************\
 * IR Send
\*********************************************************************************************/

#include <IRsend.h>

IRsend *irsend = nullptr;
bool irsend_active = false;

void IrSendInit(void)
{
  irsend = new IRsend(pin[GPIO_IRSEND]); // an IR led is at GPIO_IRSEND
  irsend->begin();
}

#ifdef USE_IR_RECEIVE
/*********************************************************************************************\
 * IR Receive
\*********************************************************************************************/

const bool IR_RCV_SAVE_BUFFER = false;         // false = do not use buffer, true = use buffer for decoding
const uint32_t IR_TIME_AVOID_DUPLICATE = 500;  // Milliseconds

#include <IRrecv.h>

IRrecv *irrecv = nullptr;

unsigned long ir_lasttime = 0;

void IrReceiveUpdateThreshold()
{
  if (irrecv != nullptr) {
    if (Settings.param[P_IR_UNKNOW_THRESHOLD] < 6) { Settings.param[P_IR_UNKNOW_THRESHOLD] = 6; }
    irrecv->setUnknownThreshold(Settings.param[P_IR_UNKNOW_THRESHOLD]);
  }
}

void IrReceiveInit(void)
{
  // an IR led is at GPIO_IRRECV
  irrecv = new IRrecv(pin[GPIO_IRRECV], IR_RCV_BUFFER_SIZE, IR_RCV_TIMEOUT, IR_RCV_SAVE_BUFFER);
  irrecv->setUnknownThreshold(Settings.param[P_IR_UNKNOW_THRESHOLD]);
  irrecv->enableIRIn();                  // Start the receiver

  //  AddLog_P(LOG_LEVEL_DEBUG, PSTR("IrReceive initialized"));
}

void IrReceiveCheck(void)
{
  char sirtype[14];  // Max is AIWA_RC_T501
  int8_t iridx = 0;

  decode_results results;

  if (irrecv->decode(&results)) {
    char hvalue[65];  // Max 256 bits

    iridx = results.decode_type;
    if ((iridx < 0) || (iridx > 14)) { iridx = 0; }  // UNKNOWN

    if (iridx) {
      if (results.bits > 64) {
        // This emulates IRutils resultToHexidecimal and may needs a larger IR_RCV_BUFFER_SIZE
        uint32_t digits2 = results.bits / 8;
        if (results.bits % 8) { digits2++; }
        ToHex_P((unsigned char*)results.state, digits2, hvalue, sizeof(hvalue));  // Get n-bit value as hex 56341200
      } else {
        Uint64toHex(results.value, hvalue, results.bits);  // Get 64bit value as hex 00123456
      }
    } else {
      Uint64toHex(results.value, hvalue, 32);  // UNKNOWN is always 32 bits hash
    }

    AddLog_P2(LOG_LEVEL_DEBUG, PSTR(D_LOG_IRR "Echo %d, RawLen %d, Overflow %d, Bits %d, Value 0x%s, Decode %d"),
              irsend_active, results.rawlen, results.overflow, results.bits, hvalue, results.decode_type);

    unsigned long now = millis();
//    if ((now - ir_lasttime > IR_TIME_AVOID_DUPLICATE) && (UNKNOWN != results.decode_type) && (results.bits > 0)) {
    if (!irsend_active && (now - ir_lasttime > IR_TIME_AVOID_DUPLICATE)) {
      ir_lasttime = now;

      char svalue[64];
      if (Settings.flag.ir_receive_decimal) {
        ulltoa(results.value, svalue, 10);
      } else {
        snprintf_P(svalue, sizeof(svalue), PSTR("\"0x%s\""), hvalue);
      }
      ResponseTime_P(PSTR(",\"" D_JSON_IRRECEIVED "\":{\"" D_JSON_IR_PROTOCOL "\":\"%s\",\"" D_JSON_IR_BITS "\":%d"),
        GetTextIndexed(sirtype, sizeof(sirtype), iridx, kIrRemoteProtocols), results.bits);
      if (iridx) {
        ResponseAppend_P(PSTR(",\"" D_JSON_IR_DATA "\":%s"), svalue);
      } else {
        ResponseAppend_P(PSTR(",\"" D_JSON_IR_HASH "\":%s"), svalue);
      }

      if (Settings.flag3.receive_raw) {
        ResponseAppend_P(PSTR(",\"" D_JSON_IR_RAWDATA "\":["));
        uint16_t i;
        for (i = 1; i < results.rawlen; i++) {
          if (i > 1) { ResponseAppend_P(PSTR(",")); }
          uint32_t usecs;
          for (usecs = results.rawbuf[i] * kRawTick; usecs > UINT16_MAX; usecs -= UINT16_MAX) {
            ResponseAppend_P(PSTR("%d,0,"), UINT16_MAX);
          }
          ResponseAppend_P(PSTR("%d"), usecs);
          if (strlen(mqtt_data) > sizeof(mqtt_data) - 40) { break; }  // Quit if char string becomes too long
        }
        uint16_t extended_length = results.rawlen - 1;
        for (uint32_t j = 0; j < results.rawlen - 1; j++) {
          uint32_t usecs = results.rawbuf[j] * kRawTick;
          // Add two extra entries for multiple larger than UINT16_MAX it is.
          extended_length += (usecs / (UINT16_MAX + 1)) * 2;
        }
        ResponseAppend_P(PSTR("],\"" D_JSON_IR_RAWDATA "Info\":[%d,%d,%d]"), extended_length, i -1, results.overflow);
      }

      ResponseJsonEndEnd();
      MqttPublishPrefixTopic_P(RESULT_OR_TELE, PSTR(D_JSON_IRRECEIVED));

      XdrvRulesProcess();
#ifdef USE_DOMOTICZ
      if (iridx) {
        unsigned long value = results.value | (iridx << 28);  // [Protocol:4, Data:28]
        DomoticzSensor(DZ_COUNT, value);                      // Send data as Domoticz Counter value
      }
#endif  // USE_DOMOTICZ
    }

    irrecv->resume();
  }
}
#endif // USE_IR_RECEIVE


#ifdef USE_IR_HVAC
/*********************************************************************************************\
 * IR Heating, Ventilation and Air Conditioning
\*********************************************************************************************/

enum IrHvacVendors { VNDR_TOSHIBA, VNDR_MITSUBISHI, VNDR_LG, VNDR_FUJITSU, VNDR_MIDEA };
const char kIrHvacVendors[] PROGMEM = "Toshiba|Mitsubishi|LG|Fujitsu|Midea" ;

const char kFanSpeedOptions[] = "A12345S";
const char kHvacModeOptions[] = "HDCA";

#ifdef USE_IR_HVAC_TOSHIBA
/*-------------------------------------------------------------------------------------------*\
 * Toshiba
\*-------------------------------------------------------------------------------------------*/

const uint16_t HVAC_TOSHIBA_HDR_MARK = 4400;
const uint16_t HVAC_TOSHIBA_HDR_SPACE = 4300;
const uint16_t HVAC_TOSHIBA_BIT_MARK = 543;
const uint16_t HVAC_TOSHIBA_ONE_SPACE = 1623;
const uint16_t HVAC_MISTUBISHI_ZERO_SPACE = 472;
const uint16_t HVAC_TOSHIBA_RPT_MARK = 440;
const uint16_t HVAC_TOSHIBA_RPT_SPACE = 7048; // Above original iremote limit
const uint8_t HVAC_TOSHIBA_DATALEN = 9;

uint8_t IrHvacToshiba(const char *HVAC_Mode, const char *HVAC_FanMode, bool HVAC_Power, int HVAC_Temp)
{
  uint16_t rawdata[2 + 2 * 8 * HVAC_TOSHIBA_DATALEN + 2];
  uint8_t data[HVAC_TOSHIBA_DATALEN] = {0xF2, 0x0D, 0x03, 0xFC, 0x01, 0x00, 0x00, 0x00, 0x00};

  char *p;
  uint8_t mode;

  if (HVAC_Mode == nullptr) {
    p = (char *)kHvacModeOptions; // default HVAC_HOT
  }
  else {
    p = strchr(kHvacModeOptions, toupper(HVAC_Mode[0]));
  }
  if (!p) {
    return IE_SYNTAX_IRHVAC;
  }
  data[6] = (p - kHvacModeOptions) ^ 0x03; // HOT = 0x03, DRY = 0x02, COOL = 0x01, AUTO = 0x00

  if (!HVAC_Power) {
    data[6] = (uint8_t)0x07; // Turn OFF HVAC
  }

  if (HVAC_FanMode == nullptr) {
    p = (char *)kFanSpeedOptions; // default FAN_SPEED_AUTO
  }
  else {
    p = strchr(kFanSpeedOptions, toupper(HVAC_FanMode[0]));
  }
  if (!p) {
    return IE_SYNTAX_IRHVAC;
  }
  mode = p - kFanSpeedOptions + 1;
  if ((1 == mode) || (7 == mode)) {
    mode = 0;
  }
  mode = mode << 5; // AUTO = 0x00, SPEED = 0x40, 0x60, 0x80, 0xA0, 0xC0, SILENT = 0x00
  data[6] = data[6] | mode;

  uint8_t Temp;
  if (HVAC_Temp > 30) {
    Temp = 30;
  }
  else if (HVAC_Temp < 17) {
    Temp = 17;
  }
  else {
    Temp = HVAC_Temp;
  }
  data[5] = (uint8_t)(Temp - 17) << 4;

  data[HVAC_TOSHIBA_DATALEN - 1] = 0;
  for (uint32_t x = 0; x < HVAC_TOSHIBA_DATALEN - 1; x++) {
    data[HVAC_TOSHIBA_DATALEN - 1] = (uint8_t)data[x] ^ data[HVAC_TOSHIBA_DATALEN - 1]; // CRC is a simple bits addition
  }

  int i = 0;
  uint8_t mask = 1;

  //header
  rawdata[i++] = HVAC_TOSHIBA_HDR_MARK;
  rawdata[i++] = HVAC_TOSHIBA_HDR_SPACE;

  //data
  for (uint32_t b = 0; b < HVAC_TOSHIBA_DATALEN; b++) {
    for (mask = B10000000; mask > 0; mask >>= 1) { //iterate through bit mask
      if (data[b] & mask) { // Bit ONE
        rawdata[i++] = HVAC_TOSHIBA_BIT_MARK;
        rawdata[i++] = HVAC_TOSHIBA_ONE_SPACE;
      }
      else { // Bit ZERO
        rawdata[i++] = HVAC_TOSHIBA_BIT_MARK;
        rawdata[i++] = HVAC_MISTUBISHI_ZERO_SPACE;
      }
    }
  }

  //trailer
  rawdata[i++] = HVAC_TOSHIBA_RPT_MARK;
  rawdata[i++] = HVAC_TOSHIBA_RPT_SPACE;

//  noInterrupts();
  irsend->sendRaw(rawdata, i, 38);
  irsend->sendRaw(rawdata, i, 38);
//  interrupts();

  return IE_NO_ERROR;
}
#endif  // USE_IR_HVAC_TOSHIBA

#ifdef USE_IR_HVAC_MIDEA
/*-------------------------------------------------------------------------------------------*\
 * Midea / Komeco
\*-------------------------------------------------------------------------------------------*/

// http://veillard.com/embedded/midea.html
// https://github.com/sheinz/esp-midea-ir/blob/master/midea-ir.c

const uint16_t HVAC_MIDEA_HDR_MARK = 4420;    // 8T high
const uint16_t HVAC_MIDEA_HDR_SPACE = 4420;   // 8T low
const uint16_t HVAC_MIDEA_BIT_MARK = 553;     // 1T
const uint16_t HVAC_MIDEA_ONE_SPACE = 1660;   // 3T low
const uint16_t HVAC_MIDEA_ZERO_SPACE = 553;   // 1T high
const uint16_t HVAC_MIDEA_RPT_MARK = 553;     // 1T
const uint16_t HVAC_MIDEA_RPT_SPACE = 5530;   // 10T
const uint8_t HVAC_MIDEA_DATALEN = 3;

uint8_t IrHvacMidea(const char *HVAC_Mode, const char *HVAC_FanMode, bool HVAC_Power, int HVAC_Temp)
{
  uint16_t rawdata[2 + 2 * 2 * 8 * HVAC_MIDEA_DATALEN + 2]; // START + 2* (2 * 3 BYTES) + STOP
  uint8_t data[HVAC_MIDEA_DATALEN] = {0xB2, 0x00, 0x00};

  char *p;
  uint8_t mode;

  if (!HVAC_Power) { // Turn OFF HVAC
    data[1] = 0x7B;
    data[2] = 0xE0;
  } else {
    // FAN
    if (HVAC_FanMode == nullptr) {
      p = (char*)kFanSpeedOptions; // default auto
    }
    else {
      p = (char*)HVAC_FanMode;
    }

    switch(p[0]) {
      case '1': data[1] = 0xBF; break; // off
      case '2': data[1] = 0x9F; break; // low
      case '3': data[1] = 0x5F; break; // med
      case '4': data[1] = 0x3F; break; // high
      case '5': data[1] = 0x1F; break; // auto
      case 'A': data[1] = 0x1F; break; // auto
      default: return IE_SYNTAX_IRHVAC;
    }

    // TEMPERATURE
    uint8_t Temp;
    if (HVAC_Temp > 30) {
      Temp = 30;
    }
    else if (HVAC_Temp < 17) {
      Temp = 17;
    }
    else {
      Temp = HVAC_Temp-17;
    }
    if (10 == Temp) { // Temp is encoded as gray code; except 27 and 28. Go figure...
      data[2] = 0x90;
    } else if (11 == Temp) {
      data[2] = 0x80;
    } else {
      Temp = (Temp >> 1) ^Temp;
      data[2] = (Temp << 4);
    }

    // MODE
    if (HVAC_Mode == nullptr) {
      p = (char*)kHvacModeOptions + 3; // default to auto
    }
    else {
      p = (char*)HVAC_Mode;
    }
    switch(toupper(p[0])) {
      case 'D': data[2] = 0xE4; break; // for fan Temp must be 0XE
      case 'C': data[2] = 0x0 | data[2]; break;
      case 'A': data[2] = 0x8 | data[2]; data[1] = 0x1F; break; // for auto Fan must be 0x1
      case 'H': data[2] = 0xC | data[2]; break;
      default: return IE_SYNTAX_IRHVAC;
    }
  }

  int i = 0;
  uint8_t mask = 1;

  //header
  rawdata[i++] = HVAC_MIDEA_HDR_MARK;
  rawdata[i++] = HVAC_MIDEA_HDR_SPACE;

  //data
  for (int b = 0; b < HVAC_MIDEA_DATALEN; b++) { // Send value
    for (mask = B10000000; mask > 0; mask >>= 1) {
      if (data[b] & mask) { // Bit ONE
        rawdata[i++] = HVAC_MIDEA_BIT_MARK;
        rawdata[i++] = HVAC_MIDEA_ONE_SPACE;
      }
      else { // Bit ZERO
        rawdata[i++] = HVAC_MIDEA_BIT_MARK;
        rawdata[i++] = HVAC_MIDEA_ZERO_SPACE;
      }
    }
    for (mask = B10000000; mask > 0; mask >>= 1) { // Send complement
      if (data[b] & mask) { // Bit ONE
        rawdata[i++] = HVAC_MIDEA_BIT_MARK;
        rawdata[i++] = HVAC_MIDEA_ZERO_SPACE;
      }
      else { // Bit ZERO
        rawdata[i++] = HVAC_MIDEA_BIT_MARK;
        rawdata[i++] = HVAC_MIDEA_ONE_SPACE;
      }
    }

  }

  //trailer
  rawdata[i++] = HVAC_MIDEA_RPT_MARK;
  rawdata[i++] = HVAC_MIDEA_RPT_SPACE;

  // this takes ~180 ms :
  irsend->sendRaw(rawdata, i, 38);
  irsend->sendRaw(rawdata, i, 38);

  return IE_NO_ERROR;
}
#endif  // USE_IR_HVAC_MIDEA

#ifdef USE_IR_HVAC_MITSUBISHI
/*-------------------------------------------------------------------------------------------*\
 * Mitsubishi
\*-------------------------------------------------------------------------------------------*/

#include <ir_Mitsubishi.h>

uint8_t IrHvacMitsubishi(const char *HVAC_Mode, const char *HVAC_FanMode, bool HVAC_Power, int HVAC_Temp)
{
  char *p;
  uint8_t mode;

  IRMitsubishiAC mitsubir(pin[GPIO_IRSEND]);

  mitsubir.stateReset();

  if (HVAC_Mode == nullptr) {
    p = (char *)kHvacModeOptions; // default HVAC_HOT
  }
  else {
    p = strchr(kHvacModeOptions, toupper(HVAC_Mode[0]));
  }
  if (!p) {
    return IE_SYNTAX_IRHVAC;
  }
  mode = (p - kHvacModeOptions + 1) << 3; // HOT = 0x08, DRY = 0x10, COOL = 0x18, AUTO = 0x20
  mitsubir.setMode(mode);

  mitsubir.setPower(HVAC_Power);

  if (HVAC_FanMode == nullptr) {
    p = (char *)kFanSpeedOptions; // default FAN_SPEED_AUTO
  }
  else {
    p = strchr(kFanSpeedOptions, toupper(HVAC_FanMode[0]));
  }
  if (!p) {
    return IE_SYNTAX_IRHVAC;
  }
  mode = p - kFanSpeedOptions; // AUTO = 0, SPEED = 1 .. 5, SILENT = 6
  mitsubir.setFan(mode);

  mitsubir.setTemp(HVAC_Temp);
  mitsubir.setVane(MITSUBISHI_AC_VANE_AUTO);
  mitsubir.send();

//  AddLog_P2(LOG_LEVEL_DEBUG, PSTR("IRHVAC: Mitsubishi Power %d, Mode %d, FanSpeed %d, Temp %d, VaneMode %d"),
//    mitsubir->getPower(), mitsubir->getMode(), mitsubir->getFan(), mitsubir->getTemp(), mitsubir->getVane());

  return IE_NO_ERROR;
}
#endif  // USE_IR_HVAC_MITSUBISHI

#ifdef USE_IR_HVAC_LG
/*-------------------------------------------------------------------------------------------*\
 * LG
\*-------------------------------------------------------------------------------------------*/

const uint8_t HVAC_LG_DATALEN = 7;

uint8_t IrHvacLG(const char *HVAC_Mode, const char *HVAC_FanMode, bool HVAC_Power, int HVAC_Temp)
{
  uint32_t LG_Code;
  uint8_t data[HVAC_LG_DATALEN];
  static bool hvacOn = false;
  char *p;
  uint8_t mode;
  uint8_t Temp;

  // Constant data
  data[0] = 0x08;
  data[1] = 0x08;
  data[2] = 0x00;

  if (!HVAC_Power) {
    data[2] = (uint8_t)0x0C; // Turn OFF HVAC, code 0x88C0051
    data[3] = (uint8_t)0x00;
    data[4] = (uint8_t)0x00;
    data[5] = (uint8_t)0x05;
    data[6] = (uint8_t)0x01;
    hvacOn = false;
  }

  else {

    // Set code for HVAC Mode - data[3]
    if (HVAC_Mode == nullptr) {
      p = (char *)kHvacModeOptions; // default HVAC_HOT
    }
    else {
      p = strchr(kHvacModeOptions, toupper(HVAC_Mode[0]));
    }
    if (!p) {
      return IE_SYNTAX_IRHVAC;
    }
    mode = (p - kHvacModeOptions) ^ 0x03; // HOT = 0x03, DRY = 0x02, COOL = 0x01, AUTO = 0x00
    switch (mode) {
      case 0: // AUTO
        data[3] = 11;
        break;
      case 1: // COOL
        data[3] = 8;
        break;
      case 2: // DRY
        data[3] = 9;
        break;
      case 3: // HOT
        data[3] = 12;
        break;
    }
    if (!hvacOn) {
      data[3] = data[3] & 7; // reset bit3
      hvacOn = true;
    }

//    AddLog_P2(LOG_LEVEL_DEBUG, PSTR("IRHVAC: HvacMode %s, ModeVal %d, Code %d"), p, mode, data[3]);

    // Set code for HVAC temperature - data[4]
    if (HVAC_Temp > 30) {
      Temp = 30;
    }
    else if (HVAC_Temp < 18) {
      Temp = 18;
    }
    else {
      Temp = HVAC_Temp;
    }
    data[4] = (uint8_t)(Temp - 15);

    // Set code for HVAC fan mode - data[5]
    if (HVAC_FanMode == nullptr) {
      p = (char *)kFanSpeedOptions; // default FAN_SPEED_AUTO
    }
    else {
      p = strchr(kFanSpeedOptions, toupper(HVAC_FanMode[0]));
    }
    if (!p) {
      return IE_SYNTAX_IRHVAC;
    }
    mode = p - kFanSpeedOptions;
    if ((mode == 0) || (mode > 3)) {
      data[5] = 5; // Auto = 0x05
    }
    else {
      data[5] = (mode * 2) - 2; // Low = 0x00, Mid = 0x02, High = 0x04
    }

//    AddLog_P2(LOG_LEVEL_DEBUG, PSTR("IRHVAC: FanMode %s, ModeVal %d, Code %d"), p, mode, data[5]);

    // Set CRC code - data[6]
    data[6] = (data[3] + data[4] + data[5]) & 0x0f; // CRC

  }
  // Build LG IR code
  LG_Code = data[0] << 4;
  for (uint32_t i = 1; i < 6; i++) {
    LG_Code = (LG_Code + data[i]) << 4;
  }
  LG_Code = LG_Code + data[6];

//  AddLog_P2(LOG_LEVEL_DEBUG, PSTR("IRHVAC: LG_Code %d"), LG_Code);

  // Send LG IR Code
  irsend->sendLG(LG_Code, 28);

  return IE_NO_ERROR;
}
#endif  // USE_IR_HVAC_LG

#ifdef USE_IR_HVAC_FUJITSU
/*-------------------------------------------------------------------------------------------*\
 * Fujitsu
\*-------------------------------------------------------------------------------------------*/

#include <ir_Fujitsu.h>

uint8_t IrHvacFujitsu(const char *HVAC_Mode, const char *HVAC_FanMode, bool HVAC_Power, int HVAC_Temp)
{
  const char kFujitsuHvacModeOptions[] = "HDCAF";

//  AddLog_P2(LOG_LEVEL_DEBUG, PSTR("FUJITSU: mode:%s, fan:%s, power:%u, temp:%u"), HVAC_Mode, HVAC_FanMode, HVAC_Power, HVAC_Temp);

  IRFujitsuAC ac(pin[GPIO_IRSEND]);

  if (0 == HVAC_Power) {
    ac.off();
    ac.send();
    return IE_NO_ERROR;
  }

  uint8_t modes[5] = {FUJITSU_AC_MODE_HEAT, FUJITSU_AC_MODE_DRY, FUJITSU_AC_MODE_COOL, FUJITSU_AC_MODE_AUTO, FUJITSU_AC_MODE_FAN};
  uint8_t fanModes[7] = {FUJITSU_AC_FAN_AUTO, FUJITSU_AC_FAN_LOW, FUJITSU_AC_FAN_MED, FUJITSU_AC_FAN_HIGH, FUJITSU_AC_FAN_HIGH, FUJITSU_AC_FAN_HIGH, FUJITSU_AC_FAN_QUIET};
  ac.setCmd(FUJITSU_AC_CMD_TURN_ON);
  ac.setSwing(FUJITSU_AC_SWING_VERT);

  char *p;
  if (nullptr == HVAC_Mode) {
    p = (char *)kFujitsuHvacModeOptions;
  }
  else {
    p = strchr(kFujitsuHvacModeOptions, toupper(HVAC_Mode[0]));
  }
  if (!p) {
    return IE_SYNTAX_IRHVAC;
  }
  ac.setMode(modes[p - kFujitsuHvacModeOptions]);

  if (HVAC_FanMode == nullptr) {
    p = (char *)kFanSpeedOptions; // default FAN_SPEED_AUTO
  }
  else {
    p = strchr(kFanSpeedOptions, toupper(HVAC_FanMode[0]));
  }
  if (!p) {
    return IE_SYNTAX_IRHVAC;
  }
  ac.setFanSpeed(fanModes[p - kFanSpeedOptions]);

  ac.setTemp(HVAC_Temp);
  ac.send();

  return IE_NO_ERROR;
}
#endif  // USE_IR_HVAC_FUJITSU

/*-------------------------------------------------------------------------------------------*/

uint32_t IrRemoteCmndIrHvacJson(void)
{
  // IrHvac { "Vendor": "<Toshiba|Mitsubishi>", "Power": <0|1>, "Mode": "<Hot|Cold|Dry|Auto>", "FanSpeed": "<1|2|3|4|5|Auto|Silence>", "Temp": <17..30> }
  const char *HVAC_Mode;
  const char *HVAC_FanMode;
  const char *HVAC_Vendor;
  char parm_uc[12];
  int HVAC_Temp = 21;
  bool HVAC_Power = true;

  char dataBufUc[XdrvMailbox.data_len];
  UpperCase(dataBufUc, XdrvMailbox.data);
  RemoveSpace(dataBufUc);
  if (strlen(dataBufUc) < 8) {
    return IE_INVALID_JSON;
  }

  StaticJsonBuffer<164> jsonBufer;
  JsonObject &root = jsonBufer.parseObject(dataBufUc);
  if (!root.success()) {
    return IE_INVALID_JSON;
  }

  HVAC_Vendor = root[UpperCase_P(parm_uc, PSTR(D_JSON_IRHVAC_VENDOR))];
  HVAC_Power = root[UpperCase_P(parm_uc, PSTR(D_JSON_IRHVAC_POWER))];
  HVAC_Mode = root[UpperCase_P(parm_uc, PSTR(D_JSON_IRHVAC_MODE))];
  HVAC_FanMode = root[UpperCase_P(parm_uc, PSTR(D_JSON_IRHVAC_FANSPEED))];
  HVAC_Temp = root[UpperCase_P(parm_uc, PSTR(D_JSON_IRHVAC_TEMP))];

//        AddLog_P2(LOG_LEVEL_DEBUG, PSTR("IRHVAC: Received Vendor %s, Power %d, Mode %s, FanSpeed %s, Temp %d"), HVAC_Vendor, HVAC_Power, HVAC_Mode, HVAC_FanMode, HVAC_Temp);

  char vendor[20];
  int vendor_code = GetCommandCode(vendor, sizeof(vendor), HVAC_Vendor, kIrHvacVendors);
  irsend_active = true;
  switch (vendor_code) {
#ifdef USE_IR_HVAC_TOSHIBA
    case VNDR_TOSHIBA:
      return IrHvacToshiba(HVAC_Mode, HVAC_FanMode, HVAC_Power, HVAC_Temp);
#endif
#ifdef USE_IR_HVAC_MITSUBISHI
    case VNDR_MITSUBISHI:
      return IrHvacMitsubishi(HVAC_Mode, HVAC_FanMode, HVAC_Power, HVAC_Temp);
#endif
#ifdef USE_IR_HVAC_LG
    case VNDR_LG:
      return IrHvacLG(HVAC_Mode, HVAC_FanMode, HVAC_Power, HVAC_Temp);
#endif
#ifdef USE_IR_HVAC_FUJITSU
    case VNDR_FUJITSU:
      return IrHvacFujitsu(HVAC_Mode, HVAC_FanMode, HVAC_Power, HVAC_Temp);
#endif
#ifdef USE_IR_HVAC_MIDEA
    case VNDR_MIDEA:
      return IrHvacMidea(HVAC_Mode, HVAC_FanMode, HVAC_Power, HVAC_Temp);
#endif
    default:
      irsend_active = false;
  }

  return IE_SYNTAX_IRHVAC;
}

void CmndIrHvac(void)
{
  uint8_t error = IE_SYNTAX_IRHVAC;

  if (XdrvMailbox.data_len) {
    error = IrRemoteCmndIrHvacJson();
  }
  IrRemoteCmndResponse(error);
}

#endif  // USE_IR_HVAC

/*********************************************************************************************\
 * Commands
\*********************************************************************************************/

uint32_t IrRemoteCmndIrSendRaw(void)
{
  // IRsend <freq>,<rawdata>,<rawdata> ...
  // or
  // IRsend raw,<freq>,<zero space>,<bit stream> (one space = zero space *2)
  // IRsend raw,<freq>,<zero space>,<zero space multiplier becoming one space>,<bit stream>
  // IRsend raw,<freq>,<zero space>,<one space>,<bit stream>
  // IRsend raw,<freq>,<header mark>,<header space>,<bit mark>,<zero space>,<one space>,<bit stream>

  char *p;
  char *str = strtok_r(XdrvMailbox.data, ", ", &p);
  if (p == nullptr) {
    return IE_INVALID_RAWDATA;
  }

  // repeat
  uint16_t repeat = XdrvMailbox.index > 0 ? XdrvMailbox.index - 1 : 0;

  uint16_t freq = atoi(str);
  if (!freq && (*str != '0')) {                     // First parameter is any string
    uint16_t count = 0;
    char *q = p;
    for (; *q; count += (*q++ == ','));
    if (count < 2) {
      return IE_INVALID_RAWDATA;
    }   // Parameters must be at least 3

    uint16_t parm[count];
    for (uint32_t i = 0; i < count; i++) {
      parm[i] = strtol(strtok_r(nullptr, ", ", &p), nullptr, 0);
      if (!parm[i]) {
        if (!i) {
          parm[0] = 38000;                          // Frequency default to 38kHz
        } else {
          return IE_INVALID_RAWDATA;                // Other parameters may not be 0
        }
      }
    }

    uint16_t i = 0;
    if (count < 4) {
      // IRsend raw,0,889,000000100110000001001
      uint16_t mark = parm[1] *2;                   // Protocol where 0 = t, 1 = 2t (RC5)
      if (3 == count) {
        if (parm[2] < parm[1]) {
          // IRsend raw,0,889,2,000000100110000001001
          mark = parm[1] * parm[2];                 // Protocol where 0 = t1, 1 = t1*t2 (Could be RC5)
        } else {
          // IRsend raw,0,889,1778,000000100110000001001
          mark = parm[2];                           // Protocol where 0 = t1, 1 = t2 (Could be RC5)
        }
      }
      uint16_t raw_array[strlen(p)];                // Bits
      for (; *p; *p++) {
        if (*p == '0') {
          raw_array[i++] = parm[1];                 // Space
        }
        else if (*p == '1') {
          raw_array[i++] = mark;                    // Mark
        }
      }
      irsend_active = true;
      for (uint32_t r = 0; r <= repeat; r++) {
        irsend->sendRaw(raw_array, i, parm[0]);
        if (r < repeat) {         // if it's not the last message
          irsend->space(40000);   // since we don't know the inter-message gap, place an arbitrary 40ms gap
        }
      }
    }
    else if (6 == count) {                          // NEC Protocol
      // IRsend raw,0,8620,4260,544,411,1496,010101101000111011001110000000001100110000000001100000000000000010001100
      uint16_t raw_array[strlen(p)*2+3];            // Header + bits + end
      raw_array[i++] = parm[1];                     // Header mark
      raw_array[i++] = parm[2];                     // Header space
      uint32_t inter_message_32 = (parm[1] + parm[2]) * 3;  // compute an inter-message gap (32 bits)
      uint16_t inter_message = (inter_message_32 > 65000) ? 65000 : inter_message_32;  // avoid 16 bits overflow
      for (; *p; *p++) {
        if (*p == '0') {
          raw_array[i++] = parm[3];                 // Bit mark
          raw_array[i++] = parm[4];                 // Zero space
        }
        else if (*p == '1') {
          raw_array[i++] = parm[3];                 // Bit mark
          raw_array[i++] = parm[5];                 // One space
        }
      }
      raw_array[i++] = parm[3];                     // Trailing mark
      irsend_active = true;
      for (uint32_t r = 0; r <= repeat; r++) {
        irsend->sendRaw(raw_array, i, parm[0]);
        if (r < repeat) {         // if it's not the last message
          irsend->space(inter_message);   // since we don't know the inter-message gap, place an arbitrary 40ms gap
        }
      }
    }
    else {
      return IE_INVALID_RAWDATA;                    // Invalid number of parameters
    }
  } else {
    if (!freq) { freq = 38000; }                    // Default to 38kHz
    uint16_t count = 0;
    char *q = p;
    for (; *q; count += (*q++ == ','));
    if (0 == count) {
      return IE_INVALID_RAWDATA;
    }

    // IRsend 0,896,876,900,888,894,876,1790,874,872,1810,1736,948,872,880,872,936,872,1792,900,888,1734
    count++;
    if (count < 200) {
      uint16_t raw_array[count];  // It's safe to use stack for up to 200 packets (limited by mqtt_data length)
      for (uint32_t i = 0; i < count; i++) {
        raw_array[i] = strtol(strtok_r(nullptr, ", ", &p), nullptr, 0);  // Allow decimal (20496) and hexadecimal (0x5010) input
      }

//      AddLog_P2(LOG_LEVEL_DEBUG, PSTR("DBG: stack count %d"), count);

      irsend_active = true;
      for (uint32_t r = 0; r <= repeat; r++) {
        irsend->sendRaw(raw_array, count, freq);
      }
    } else {
      uint16_t *raw_array = reinterpret_cast<uint16_t*>(malloc(count * sizeof(uint16_t)));
      if (raw_array == nullptr) {
        return IE_INVALID_RAWDATA;
      }

      for (uint32_t i = 0; i < count; i++) {
        raw_array[i] = strtol(strtok_r(nullptr, ", ", &p), nullptr, 0);  // Allow decimal (20496) and hexadecimal (0x5010) input
      }

//     AddLog_P2(LOG_LEVEL_DEBUG, PSTR("DBG: heap count %d"), count);

      irsend_active = true;
      for (uint32_t r = 0; r <= repeat; r++) {
        irsend->sendRaw(raw_array, count, freq);
      }
      free(raw_array);
    }
  }

  return IE_NO_ERROR;
}

uint32_t IrRemoteCmndIrSendJson(void)
{
  // ArduinoJSON entry used to calculate jsonBuf: JSON_OBJECT_SIZE(3) + 40 = 96
  // IRsend { "protocol": "RC5", "bits": 12, "data":"0xC86" }
  // IRsend { "protocol": "SAMSUNG", "bits": 32, "data": 551502015 }

  char dataBufUc[XdrvMailbox.data_len];
  UpperCase(dataBufUc, XdrvMailbox.data);
  RemoveSpace(dataBufUc);
  if (strlen(dataBufUc) < 8) {
    return IE_INVALID_JSON;
  }

  StaticJsonBuffer<140> jsonBuf;
  JsonObject &root = jsonBuf.parseObject(dataBufUc);
  if (!root.success()) {
    return IE_INVALID_JSON;
  }

  // IRsend { "protocol": "SAMSUNG", "bits": 32, "data": 551502015 }
  // IRsend { "protocol": "NEC", "bits": 32, "data":"0x02FDFE80", "repeat": 2 }
  char parm_uc[10];
  const char *protocol = root[UpperCase_P(parm_uc, PSTR(D_JSON_IR_PROTOCOL))];
  uint16_t bits = root[UpperCase_P(parm_uc, PSTR(D_JSON_IR_BITS))];
  uint64_t data = strtoull(root[UpperCase_P(parm_uc, PSTR(D_JSON_IR_DATA))], nullptr, 0);
  uint16_t repeat = root[UpperCase_P(parm_uc, PSTR(D_JSON_IR_REPEAT))];
  // check if the IRSend<x> is great than repeat
  if (XdrvMailbox.index > repeat + 1) {
    repeat = XdrvMailbox.index - 1;
  }
  if (!(protocol && bits)) {
    return IE_SYNTAX_IRSEND;
  }

  char protocol_text[20];
  int protocol_code = GetCommandCode(protocol_text, sizeof(protocol_text), protocol, kIrRemoteProtocols);

  char dvalue[64];
  char hvalue[20];
  AddLog_P2(LOG_LEVEL_DEBUG, PSTR("IRS: protocol_text %s, protocol %s, bits %d, data %s (0x%s), repeat %d, protocol_code %d"),
    protocol_text, protocol, bits, ulltoa(data, dvalue, 10), Uint64toHex(data, hvalue, bits), repeat, protocol_code);

  irsend_active = true;
  switch (protocol_code) {  // Equals IRremoteESP8266.h enum decode_type_t
#ifdef USE_IR_SEND_RC5
    case RC5:
      irsend->sendRC5(data, bits, repeat); break;
#endif
#ifdef USE_IR_SEND_RC6
    case RC6:
      irsend->sendRC6(data, bits, repeat); break;
#endif
#ifdef USE_IR_SEND_NEC
    case NEC:
      irsend->sendNEC(data, (bits > NEC_BITS) ? NEC_BITS : bits, repeat); break;
#endif
#ifdef USE_IR_SEND_SONY
    case SONY:
      irsend->sendSony(data, (bits > SONY_20_BITS) ? SONY_20_BITS : bits, repeat > kSonyMinRepeat ? repeat : kSonyMinRepeat); break;
#endif
#ifdef USE_IR_SEND_PANASONIC
    case PANASONIC:
      irsend->sendPanasonic64(data, bits, repeat); break;
#endif
#ifdef USE_IR_SEND_JVC
    case JVC:
      irsend->sendJVC(data, (bits > JVC_BITS) ? JVC_BITS : bits, repeat > 1 ? repeat : 1); break;
#endif
#ifdef USE_IR_SEND_SAMSUNG
    case SAMSUNG:
      irsend->sendSAMSUNG(data, (bits > SAMSUNG_BITS) ? SAMSUNG_BITS : bits, repeat); break;
#endif
#ifdef USE_IR_SEND_WHYNTER
    case WHYNTER:
      irsend->sendWhynter(data, bits, repeat); break;
#endif
#ifdef USE_IR_SEND_AIWA
    case AIWA_RC_T501:
      irsend->sendAiwaRCT501(data, bits, repeat); break;
#endif
#ifdef USE_IR_SEND_LG
    case LG:
      irsend->sendLG(data, bits, repeat); break;
#endif
#ifdef USE_IR_SEND_SANYO
    case SANYO:
      irsend->sendSanyoLC7461(data, bits, repeat); break;
#endif
#ifdef USE_IR_SEND_MITSUBISHI
    case MITSUBISHI:
      irsend->sendMitsubishi(data, bits, repeat); break;
#endif
#ifdef USE_IR_SEND_DISH
    case DISH:
      irsend->sendDISH(data, (bits > DISH_BITS) ? DISH_BITS : bits, repeat > kDishMinRepeat ? repeat : kDishMinRepeat); break;
#endif
#ifdef USE_IR_SEND_SHARP
    case SHARP:
      irsend->sendSharpRaw(data, bits, repeat); break;
#endif
#ifdef USE_IR_SEND_PIONEER
    case IR_PIONEER:
      irsend->sendPioneer(data, bits, repeat); break;
#endif  // USE_IR_SEND_PIONEER
    default:
      irsend_active = false;
      ResponseCmndChar(D_JSON_PROTOCOL_NOT_SUPPORTED);
  }

  return IE_NO_ERROR;
}

void CmndIrSend(void)
{
  uint8_t error = IE_SYNTAX_IRSEND;

  if (XdrvMailbox.data_len) {
//    error = (strstr(XdrvMailbox.data, "{") == nullptr) ? IrRemoteCmndIrSendRaw() : IrRemoteCmndIrSendJson();
    if (strstr(XdrvMailbox.data, "{") == nullptr) {
      error = IrRemoteCmndIrSendRaw();
    } else {
      error = IrRemoteCmndIrSendJson();
    }
  }
  IrRemoteCmndResponse(error);
}

void IrRemoteCmndResponse(uint32_t error)
{
  switch (error) {
    case IE_INVALID_RAWDATA:
      ResponseCmndChar(D_JSON_INVALID_RAWDATA);
      break;
    case IE_INVALID_JSON:
      ResponseCmndChar(D_JSON_INVALID_JSON);
      break;
    case IE_SYNTAX_IRSEND:
      Response_P(PSTR("{\"" D_CMND_IRSEND "\":\"" D_JSON_NO " " D_JSON_IR_PROTOCOL ", " D_JSON_IR_BITS " " D_JSON_OR " " D_JSON_IR_DATA "\"}"));
      break;
#ifdef USE_IR_HVAC
    case IE_SYNTAX_IRHVAC:
      Response_P(PSTR("{\"" D_CMND_IRHVAC "\":\"" D_JSON_WRONG " " D_JSON_IRHVAC_VENDOR ", " D_JSON_IRHVAC_MODE " " D_JSON_OR " " D_JSON_IRHVAC_FANSPEED "\"}"));
      break;
#endif // USE_IR_HVAC
    default:  // IE_NO_ERROR
      ResponseCmndDone();
  }
}

/*********************************************************************************************\
 * Interface
\*********************************************************************************************/

bool Xdrv05(uint8_t function)
{
  bool result = false;

  if ((pin[GPIO_IRSEND] < 99) || (pin[GPIO_IRRECV] < 99)) {
    switch (function) {
      case FUNC_PRE_INIT:
        if (pin[GPIO_IRSEND] < 99) {
          IrSendInit();
        }
#ifdef USE_IR_RECEIVE
        if (pin[GPIO_IRRECV] < 99) {
          IrReceiveInit();
        }
#endif  // USE_IR_RECEIVE
        break;
      case FUNC_EVERY_50_MSECOND:
#ifdef USE_IR_RECEIVE
        if (pin[GPIO_IRRECV] < 99) {
          IrReceiveCheck();  // check if there's anything on IR side
        }
#endif  // USE_IR_RECEIVE
        irsend_active = false;  // re-enable IR reception
        break;
      case FUNC_COMMAND:
        if (pin[GPIO_IRSEND] < 99) {
          result = DecodeCommand(kIrRemoteCommands, IrRemoteCommand);
        }
        break;
    }
  }
  return result;
}

#endif // defined(USE_IR_REMOTE) && !defined(USE_IR_REMOTE_FULL)