// Copyright 2016 David Conran

/// @file
/// @brief Support for Gree A/C protocols.
/// @see https://github.com/ToniA/arduino-heatpumpir/blob/master/GreeHeatpumpIR.h

// Supports:
//   Brand: Ultimate,  Model: Heat Pump
//   Brand: EKOKAI,  Model: A/C
//   Brand: RusClimate,  Model: EACS/I-09HAR_X/N3 A/C
//   Brand: RusClimate,  Model: YAW1F remote
//   Brand: Green,  Model: YBOFB remote
//   Brand: Green,  Model: YBOFB2 remote
//   Brand: Gree,  Model: YAA1FBF remote
//   Brand: Gree,  Model: YB1F2F remote
//   Brand: Amana,  Model: PBC093G00CC A/C
//   Brand: Amana,  Model: YX1FF remote

#ifndef IR_GREE_H_
#define IR_GREE_H_

#define __STDC_LIMIT_MACROS
#include <stdint.h>
#ifndef UNIT_TEST
#include <Arduino.h>
#endif
#include "IRremoteESP8266.h"
#include "IRsend.h"
#ifdef UNIT_TEST
#include "IRsend_test.h"
#endif

/// Native representation of a Gree A/C message.
union GreeProtocol{
  uint8_t remote_state[kGreeStateLength];  ///< The state in native IR code form
  struct {
    // Byte 0
    uint8_t Mode      :3;
    uint8_t Power     :1;
    uint8_t Fan       :2;
    uint8_t SwingAuto :1;
    uint8_t Sleep     :1;
    // Byte 1
    uint8_t Temp        :4;
    uint8_t TimerHalfHr :1;
    uint8_t TimerTensHr :2;
    uint8_t TimerEnabled:1;
    // Byte 2
    uint8_t TimerHours:4;
    uint8_t Turbo     :1;
    uint8_t Light     :1;
    uint8_t ModelA    :1;  // model==YAW1F
    uint8_t Xfan      :1;
    // Byte 3
    uint8_t :2;
    uint8_t TempExtraDegreeF:1;
    uint8_t UseFahrenheit   :1;
    uint8_t unknown1        :4;  // value=0b0101
    // Byte 4
    uint8_t Swing:4;
    uint8_t :0;
    // Byte 5
    uint8_t DisplayTemp :2;
    uint8_t IFeel       :1;
    uint8_t unknown2    :3;  // value = 0b100
    uint8_t WiFi        :1;
    uint8_t :0;
    // Byte 6
    uint8_t :8;
    // Byte 7
    uint8_t :4;
    uint8_t Sum:4;
  };
};

// Constants

const uint8_t kGreeAuto = 0;
const uint8_t kGreeCool = 1;
const uint8_t kGreeDry  = 2;
const uint8_t kGreeFan  = 3;
const uint8_t kGreeHeat = 4;

const uint8_t kGreeFanAuto = 0;
const uint8_t kGreeFanMin  = 1;
const uint8_t kGreeFanMed  = 2;
const uint8_t kGreeFanMax  = 3;

const uint8_t kGreeMinTempC = 16;  // Celsius
const uint8_t kGreeMaxTempC = 30;  // Celsius
const uint8_t kGreeMinTempF = 61;  // Fahrenheit
const uint8_t kGreeMaxTempF = 86;  // Fahrenheit
const uint16_t kGreeTimerMax = 24 * 60;

const uint8_t kGreeSwingLastPos    = 0b0000;
const uint8_t kGreeSwingAuto       = 0b0001;
const uint8_t kGreeSwingUp         = 0b0010;
const uint8_t kGreeSwingMiddleUp   = 0b0011;
const uint8_t kGreeSwingMiddle     = 0b0100;
const uint8_t kGreeSwingMiddleDown = 0b0101;
const uint8_t kGreeSwingDown       = 0b0110;
const uint8_t kGreeSwingDownAuto   = 0b0111;
const uint8_t kGreeSwingMiddleAuto = 0b1001;
const uint8_t kGreeSwingUpAuto     = 0b1011;

const uint8_t kGreeDisplayTempOff     = 0b00;  // 0
const uint8_t kGreeDisplayTempSet     = 0b01;  // 1
const uint8_t kGreeDisplayTempInside  = 0b10;  // 2
const uint8_t kGreeDisplayTempOutside = 0b11;  // 3

// Legacy defines.
#define GREE_AUTO kGreeAuto
#define GREE_COOL kGreeCool
#define GREE_DRY kGreeDry
#define GREE_FAN kGreeFan
#define GREE_HEAT kGreeHeat
#define GREE_MIN_TEMP kGreeMinTempC
#define GREE_MAX_TEMP kGreeMaxTempC
#define GREE_FAN_MAX kGreeFanMax
#define GREE_SWING_LAST_POS kGreeSwingLastPos
#define GREE_SWING_AUTO kGreeSwingAuto
#define GREE_SWING_UP kGreeSwingUp
#define GREE_SWING_MIDDLE_UP kGreeSwingMiddleUp
#define GREE_SWING_MIDDLE kGreeSwingMiddle
#define GREE_SWING_MIDDLE_DOWN kGreeSwingMiddleDown
#define GREE_SWING_DOWN kGreeSwingDown
#define GREE_SWING_DOWN_AUTO kGreeSwingDownAuto
#define GREE_SWING_MIDDLE_AUTO kGreeSwingMiddleAuto
#define GREE_SWING_UP_AUTO kGreeSwingUpAuto

// Classes
/// Class for handling detailed Gree A/C messages.
class IRGreeAC {
 public:
  explicit IRGreeAC(
      const uint16_t pin,
      const gree_ac_remote_model_t model = gree_ac_remote_model_t::YAW1F,
      const bool inverted = false, const bool use_modulation = true);
  void stateReset(void);
#if SEND_GREE
  void send(const uint16_t repeat = kGreeDefaultRepeat);
  /// Run the calibration to calculate uSec timing offsets for this platform.
  /// @return The uSec timing offset needed per modulation of the IR Led.
  /// @note This will produce a 65ms IR signal pulse at 38kHz.
  ///   Only ever needs to be run once per object instantiation, if at all.
  int8_t calibrate(void) { return _irsend.calibrate(); }
#endif  // SEND_GREE
  void begin(void);
  void on(void);
  void off(void);
  void setModel(const gree_ac_remote_model_t model);
  gree_ac_remote_model_t getModel(void) const;
  void setPower(const bool on);
  bool getPower(void) const;
  void setTemp(const uint8_t temp, const bool fahrenheit = false);
  uint8_t getTemp(void) const;
  void setUseFahrenheit(const bool on);
  bool getUseFahrenheit(void) const;
  void setFan(const uint8_t speed);
  uint8_t getFan(void) const;
  void setMode(const uint8_t new_mode);
  uint8_t getMode(void) const;
  void setLight(const bool on);
  bool getLight(void) const;
  void setXFan(const bool on);
  bool getXFan(void) const;
  void setSleep(const bool on);
  bool getSleep(void) const;
  void setTurbo(const bool on);
  bool getTurbo(void) const;
  void setIFeel(const bool on);
  bool getIFeel(void) const;
  void setWiFi(const bool on);
  bool getWiFi(void) const;
  void setSwingVertical(const bool automatic, const uint8_t position);
  bool getSwingVerticalAuto(void) const;
  uint8_t getSwingVerticalPosition(void) const;
  uint16_t getTimer(void) const;
  void setTimer(const uint16_t minutes);
  void setDisplayTempSource(const uint8_t mode);
  uint8_t getDisplayTempSource(void) const;
  static uint8_t convertMode(const stdAc::opmode_t mode);
  static uint8_t convertFan(const stdAc::fanspeed_t speed);
  static uint8_t convertSwingV(const stdAc::swingv_t swingv);
  static stdAc::opmode_t toCommonMode(const uint8_t mode);
  static stdAc::fanspeed_t toCommonFanSpeed(const uint8_t speed);
  static stdAc::swingv_t toCommonSwingV(const uint8_t pos);
  stdAc::state_t toCommon(void);
  uint8_t* getRaw(void);
  void setRaw(const uint8_t new_code[]);
  static bool validChecksum(const uint8_t state[],
                            const uint16_t length = kGreeStateLength);
  String toString(void);
#ifndef UNIT_TEST

 private:
  IRsend _irsend;  ///< Instance of the IR send class
#else  // UNIT_TEST
  /// @cond IGNORE
  IRsendTest _irsend;  ///< Instance of the testing IR send class
  /// @endcond
#endif  // UNIT_TEST
  GreeProtocol _;
  gree_ac_remote_model_t _model;
  void checksum(const uint16_t length = kGreeStateLength);
  void fixup(void);
  void setTimerEnabled(const bool on);
  bool getTimerEnabled(void) const;
};

#endif  // IR_GREE_H_