// Copyright 2019 David Conran

/// @file
/// @brief Amcor A/C protocol.
/// @see https://github.com/crankyoldgit/IRremoteESP8266/issues/834
/// @remark Kudos to ldellus; For the breakdown and mapping of the bit values.
// Supports:
//   Brand: Amcor,  Model: ADR-853H A/C
//   Brand: Amcor,  Model: TAC-495 remote
//   Brand: Amcor,  Model: TAC-444 remote

#ifndef IR_AMCOR_H_
#define IR_AMCOR_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 Amcor A/C message.
union AmcorProtocol{
  uint8_t raw[kAmcorStateLength];  // The state of the IR remote.
  struct {
    // Byte 0
    uint8_t       :8;  // Typically 0x01
    // Byte 1
    uint8_t Mode  :3;
    uint8_t       :1;
    uint8_t Fan   :3;
    uint8_t       :1;
    // Byte 2
    uint8_t       :1;
    uint8_t Temp  :6;
    uint8_t       :1;
    // Byte 3
    uint8_t       :8;
    // Byte 4
    uint8_t       :8;
    // Byte 5
    uint8_t       :4;
    uint8_t Power :4;
    // Byte 6
    uint8_t Max   :2;
    uint8_t       :4;
    uint8_t Vent  :2;
    // Byte 7
    uint8_t Sum   :8;
  };
};

// Constants

// Fan Control
const uint8_t kAmcorFanMin =   0b001;
const uint8_t kAmcorFanMed =   0b010;
const uint8_t kAmcorFanMax =   0b011;
const uint8_t kAmcorFanAuto =  0b100;
// Modes
const uint8_t kAmcorCool =     0b001;
const uint8_t kAmcorHeat =     0b010;
const uint8_t kAmcorFan =      0b011;  // Aka "Vent"
const uint8_t kAmcorDry =      0b100;
const uint8_t kAmcorAuto =     0b101;

// Temperature
const uint8_t kAmcorMinTemp = 12;  // Celsius
const uint8_t kAmcorMaxTemp = 32;  // Celsius

// Power
const uint8_t kAmcorPowerOn =   0b0011;  // 0x3
const uint8_t kAmcorPowerOff =  0b1100;  // 0xC

// Max Mode (aka "Lo" in Cool and "Hi" in Heat)
const uint8_t kAmcorMax = 0b11;

// "Vent" Mode
const uint8_t kAmcorVentOn =  0b11;


// Classes

/// Class for handling detailed Amcor A/C messages.
class IRAmcorAc {
 public:
  explicit IRAmcorAc(const uint16_t pin, const bool inverted = false,
                     const bool use_modulation = true);

  void stateReset();
#if SEND_AMCOR
  void send(const uint16_t repeat = kAmcorDefaultRepeat);
  /// 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_AMCOR
  void begin();
  static uint8_t calcChecksum(const uint8_t state[],
                              const uint16_t length = kAmcorStateLength);
  static bool validChecksum(const uint8_t state[],
                            const uint16_t length = kAmcorStateLength);
  void setPower(const bool state);
  bool getPower(void) const;
  void on(void);
  void off(void);
  void setTemp(const uint8_t temp);
  uint8_t getTemp(void) const;
  void setMax(const bool on);
  bool getMax(void) const;
  void setFan(const uint8_t speed);
  uint8_t getFan(void) const;
  void setMode(const uint8_t mode);
  uint8_t getMode(void) const;
  uint8_t* getRaw(void);
  void setRaw(const uint8_t state[]);
  static uint8_t convertMode(const stdAc::opmode_t mode);
  static uint8_t convertFan(const stdAc::fanspeed_t speed);
  static stdAc::opmode_t toCommonMode(const uint8_t mode);
  static stdAc::fanspeed_t toCommonFanSpeed(const uint8_t speed);
  stdAc::state_t toCommon(void) const;
  String toString(void) const;
#ifndef UNIT_TEST

 private:
  IRsend _irsend;
#else
  /// @cond IGNORE
  IRsendTest _irsend;
  /// @endcond
#endif
  AmcorProtocol _;
  void checksum(void);
};
#endif  // IR_AMCOR_H_
