#include <ButtonDebounce.h>

#include <SoftwareSerial.h>
#define lightSensor A1
#define tempSensor A0
#define RED_PIN 11
#define GREEN_PIN 10
#define BLUE_PIN 9
#define DEBOUNCE_INTERVAL 60
#define AUTOMATIC 0
#define MANUAL 1

#define NR_LED_STATES 3
#define LED_OFF 255
#define LED_HIGH 0
#define LED_MED 80
#define LED_LOW 160

#define LIGHT_LOW_MED 100
#define LIGHT_MED_HIGH 300
#define TEMP_LOW_MED 190
#define TEMP_MED_HIGH 210

#define NR_TEMP_STATES 3
#define COLD 0
#define TEMPERATE 1
#define HOT 2

int brightness = 0;
int temperature = TEMPERATE;
int red = 0;
int green = 0;
int blue = 0;
bool poweredOn = false;
int operationMode = MANUAL;
int temperatureRaw;

ButtonDebounce powerButton(7, DEBOUNCE_INTERVAL);
ButtonDebounce brightnessButton(6, DEBOUNCE_INTERVAL);
ButtonDebounce heatButton(5, DEBOUNCE_INTERVAL);
SoftwareSerial HM10(2, 3); // RX = 2, TX = 3

char appData;
String inData = "";

void setBrightnessByLight() {
    int Lvalue = analogRead(lightSensor);// read the light

    if (Lvalue < LIGHT_LOW_MED) {
      brightness = 2;
    } else if (Lvalue > LIGHT_MED_HIGH) {
      brightness = 0;
    } else {
      brightness = 1;
    }
}


int getBrightnessValue() {
  switch (brightness) {
    case 0:
      return LED_LOW;
    case 1:
      return LED_MED;
    case 2:
      return LED_HIGH;
    default:
      return LED_OFF;
  }
}

void setTemperature() {
    int Tvalue = analogRead(tempSensor);// read the light

    if (Tvalue < TEMP_LOW_MED) {
      temperature = HOT;
    } else if (Tvalue > TEMP_MED_HIGH) {
      temperature = COLD;
    } else {
      temperature = TEMPERATE;
    }
}

void calculateLightValues() {
  int brightnessValue = getBrightnessValue();

  red = temperature == COLD ? LED_OFF : brightnessValue;
  green = temperature == TEMPERATE ? brightnessValue : LED_OFF;
  blue = temperature == HOT ? LED_OFF : brightnessValue;
}
void onPowerButtonChange(const int state) {
  if (state % 2 == 0) {
    poweredOn = !poweredOn;
    if (!poweredOn) {
      analogWrite(RED_PIN, 255);
      analogWrite(GREEN_PIN, 255);
      analogWrite(BLUE_PIN, 255);
    } else {
      operationMode = AUTOMATIC;
    }
  }
}

void onBrightnessButtonChange(const int state) {
  if (state % 2 == 0) {
    operationMode = MANUAL;
    brightness = (brightness + 1) % 3;
  }
}

void onHeatButtonChange(const int state) {
  if (state % 2 == 0) {
    operationMode = MANUAL;
    temperature = (temperature + 1) % 3;
  }
}

void setup() {
  HM10.begin(9600); // set HM10 serial at 9600 baud rate sau 57600 sau 115200

  pinMode(RED_PIN, OUTPUT);
  pinMode(GREEN_PIN, OUTPUT);
  pinMode(BLUE_PIN, OUTPUT);


  powerButton.setCallback(onPowerButtonChange);
  brightnessButton.setCallback(onBrightnessButtonChange);
  heatButton.setCallback(onHeatButtonChange);

  analogWrite(RED_PIN, 255);
  analogWrite(GREEN_PIN, 255);
  analogWrite(BLUE_PIN, 255);
  pinMode(2, INPUT);
  pinMode(3, OUTPUT);
}
void handleBluetoothCommand(char command) {
  switch (command) {
    case 'm':
      operationMode = AUTOMATIC;
      break;

    case 'M':
      operationMode = MANUAL;
      break;
      
    case 'b':
      operationMode = MANUAL;
      brightness = (brightness + 1) % 3;
      break;

    case 'B':
      operationMode = MANUAL;
      brightness = brightness == 0 ? 2 : (brightness - 1);
      break;

    case 't':
      operationMode = MANUAL;
      temperature = (temperature + 1) % 3;
      break;

    case 'T':
      operationMode = MANUAL;
      temperature = temperature == 0 ? 2 : (temperature - 1);
      break;

    case 'p':
    case 'P':
      poweredOn = !poweredOn;
      if (!poweredOn) {
        analogWrite(RED_PIN, 255);
        analogWrite(GREEN_PIN, 255);
        analogWrite(BLUE_PIN, 255);
      } else {
        operationMode = AUTOMATIC;
      }
      break;
    default:;
   }

//  if ( inData == "r") {
//    analogWrite(RED_PIN, 255); // switch OFF r LED
//  }
//
//  if ( inData == "R") {
//    analogWrite(RED_PIN, 0); // switch ON r LED
//  }
//
//  if ( inData == "g") {
//    analogWrite(GREEN_PIN, 255); // switch OFF g LED
//  }
//
//  if ( inData == "G") {
//    analogWrite(GREEN_PIN, 0); // switch ON g LED
//  }
//
//  if ( inData == "b") {
//    analogWrite(BLUE_PIN, 255); // switch OFF b LED
//  }
//
//  if ( inData == "B") {
//    analogWrite(BLUE_PIN, 0); // switch ON b LED
//  }

}

void loop() {

  powerButton.update();
  brightnessButton.update();
  heatButton.update();

  HM10.listen();  // listen the HM10 port

  while (HM10.available() > 0) {   // if HM10 sends something then read
    appData = HM10.read();
    inData = String(appData);  // save the data in string format
    Serial.write(appData);
  }

  handleBluetoothCommand(inData[0]);
  if (!poweredOn) {
    return;
  }

  if (operationMode == AUTOMATIC) {
    setBrightnessByLight();
    setTemperature();
  }

  calculateLightValues();
  
  analogWrite(RED_PIN, red);
  analogWrite(GREEN_PIN, green);
  analogWrite(BLUE_PIN, blue);

}