// RGB and R, G, B LED demo
/*
  https://arduinogetstarted.com/tutorials/arduino-button



*/
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C LCD(0x27, 20, 4);

const int pinR = 3;
const int pinG = 5;
const int pinB = 6;
const int pinY = 2;
const int Btn1 = 7;
const int Swt1 = 8;
const int sw00 = 9;


const int potR = A0;
const int potG = A1;
const int potB = A2;

void setup() {
  pinMode(pinR, OUTPUT);
  pinMode(pinG, OUTPUT);
  pinMode(pinB, OUTPUT);
  pinMode(pinY, OUTPUT);
  pinMode(potR, INPUT);
  pinMode(potG, INPUT);
  pinMode(potB, INPUT);
  pinMode(Swt1, INPUT);
  pinMode(Btn1, INPUT_PULLUP);
  pinMode(sw00, INPUT_PULLUP);

  LCD.init();
  LCD.backlight();
  LCD.setCursor(1, 0);
  LCD.print("Starting up ...");
  delay(100);
  LCD.clear();
}

//Button states
int lastState = HIGH;
int currentState;

//when Switch is LOW switch is closed HIGH open
void ButtonCheck()
{
  // read the state of the switch/button:
  currentState = digitalRead(Btn1);
  if (lastState == LOW && currentState == HIGH)
  {
    lastState = currentState;// save the last state
    digitalWrite(pinY, HIGH);
    delay(200);
    digitalWrite(pinY, LOW);
    delay(200);
  }
  else if (lastState == HIGH && currentState == LOW)
  {

    lastState = currentState;// save the last state
    digitalWrite(pinY, HIGH);
    delay(200);
    digitalWrite(pinY, LOW);
    delay(200);
  }
}

//LCD Spinner
/*
void spinner() {
  static int8_t counter = 0;
  const char* glyphs = "\xa1\xa5\xdb";
  LCD.setCursor(15, 1);
  LCD.print(glyphs[counter++]);
  if (counter == strlen(glyphs)) {
    counter = 0;
  }
}
*/

//Writing Light to RGB LED
//reading sliders
int readPot(int pin)
{
  return map(analogRead(pin), 0, 1023, 0, 255);
}
//formating read values
void RGB_color1()
{
  int red_light_value1 = readPot(potR);
  int green_light_value1 = readPot(potG);
  int blue_light_value1 = readPot(potB);

  Write_RGB_Color(red_light_value1, green_light_value1, blue_light_value1);
}
//Color sycle values
void Colorsycle()
{
  delay(1000);
  Write_RGB_Color(255, 0, 0); // Red
  delay(1000);
  Write_RGB_Color(0, 255, 0); // Green
  delay(1000);
  Write_RGB_Color(0, 0, 255); // Blue
  loop();
}
//Writing values
void Write_RGB_Color(int red_light, int green_light, int blue_light)
{
  analogWrite(pinR, red_light);
  analogWrite(pinG, green_light);
  analogWrite(pinB, blue_light);

  LCD.setCursor(0, 1);
  LCD.println(red_light);
  LCD.setCursor(4, 1);
  LCD.println(green_light);
  LCD.setCursor(8, 1);
  LCD.println(blue_light);
  LCD.setCursor(0, 2);
  int red_light1 = (red_light * 100) / 255;
  LCD.println(red_light1);
  LCD.setCursor(4, 2);
  int green_light1 = (green_light * 100) / 255;
  LCD.println(green_light1);
  LCD.setCursor(8, 2);
  int blue_light1 = (blue_light * 100) / 255;
  LCD.println(blue_light1);
}


//Switch
int SWlastState = HIGH;
int SWcurrentState;

void loop()
{
  ButtonCheck(); //check button

  //LCD
  LCD.setCursor(1, 0);
  LCD.println("R");
  LCD.setCursor(5, 0);
  LCD.println("G");
  LCD.setCursor(9, 0);
  LCD.println("B");

  //check switch
  SWcurrentState = digitalRead(sw00);
  if (SWcurrentState == LOW && SWlastState == HIGH)
  {
    Colorsycle();
  }
  else
  {
    RGB_color1();
    SWlastState = SWcurrentState;
  }
  //checked switch + took action

}