// https://wokwi.com/projects/401411534577377281
bool debug = true;
#include "FastLED.h"
#define NUM_LEDS 50
#define LED_DT 12  //data pin 9
#define LED_TYPE WS2811
#define COLOR_ORDER GRB

int potPin = A0;
int potVal = 255;
int potColor = 255;
int potBright = 255;
int potDelay = 255;

uint8_t max_bright = 255;  //half bright set

CRGB leds[NUM_LEDS];

// Add this global variable to track the breathing effect
float huePhase = 0.0;

bool ButtonTriggered = false;
#define Button 3
unsigned long previousMillis = 0;  // will store last time Button was pushed
unsigned long currentMillis = 0;
const long interval = 500;  // delay before another input (milliseconds)
int selectedEffect = 2;



void setup() {
  if (debug) { Serial.begin(115200); }

  attachInterrupt(digitalPinToInterrupt(Button), buttonPressed, CHANGE);
  pinMode(Button, INPUT_PULLUP);  // internal pull-up resistor
    
  pinMode(potPin, INPUT);
  LEDS.addLeds<LED_TYPE, LED_DT, COLOR_ORDER>(leds, NUM_LEDS);
  FastLED.setBrightness(max_bright);
}

void loop() {

  if (ButtonTriggered == true) {
    delay(250);
    ButtonTriggered = false;
    selectedEffect++;
    if (selectedEffect > 2) {
      selectedEffect = 0;
    }
    if (debug) { Serial.println("Trigger is over, back to normal"); }
  }

  switch (selectedEffect) {
    case 0:
      {
        if (debug) { Serial.println("selectedEffect 0 Brightness"); }
        // Breathing effect: smoothly transition hue
        potVal = analogRead(potPin);
        potBright = map(potVal, 0, 1023, 10, 255);
        break;
      }
    case 1:
      {
        if (debug) { Serial.println("selectedEffect 1 Color"); }
        potVal = analogRead(potPin);
        potColor = map(potVal, 0, 1023, 0, 255);
        break;
      }
    case 2:
      if (debug) { Serial.println("selectedEffect 2 Delay"); }
      potVal = analogRead(potPin);
      potDelay = map(potVal, 0, 1023, 0, 255);
      break;
  }
  
  //FastLED.setBrightness(potBright);
  fill_solid(leds, NUM_LEDS, CHSV(potColor, 255, potBright));
  FastLED.show();
  delay(potDelay);


  if (debug) { Serial.println(selectedEffect); }
  if (debug) { Serial.println(potBright); }
  if (debug) { Serial.println(potColor); }
  if (debug) { Serial.println(potDelay); }
}

void buttonPressed() {

  if (debug) { Serial.println("Interrupt on pin 3 was fired"); }
  if (ButtonTriggered == false) {
    ButtonTriggered = true;
  }
}