/*
  power- 162
    1- 48
      2- 24
        3- 122
*/


#include <IRremote.h>

#define RECV_PIN  13    // Signal Pin of IR receiver
const int ledPins[] = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11};  // Define an array of LED pin numbers
const int numLeds = sizeof(ledPins) / sizeof(ledPins[0]);  // Calculate the number of LEDs


unsigned long previousMillis = 0;  // Variable to store the previous time
unsigned long interval = 100;      // Interval between LED state changes (in milliseconds)
int ledStates[] = {LOW, LOW, LOW, LOW, LOW};  // Array to store the state of each LED
int currentLed = 0;  // Index of the currently active LED

///////////////////////////////////////////
String irdata = "";                       //
String power = "162";                     //power button
String func_one = "48";                   //button number  1
String func_two = "24";                   //button number  2
String func_three = "122";                //button number  3
String func_four = "16";                  //button number  4
//////////////////////////////////////////

bool power_on = false;
bool reverseDirection = false;


IRrecv irrecv(RECV_PIN);

void setup() {
  Serial.begin(9600);

  // Set LED pins as OUTPUT
  for (int i = 0; i < numLeds; i++) {
    pinMode(ledPins[i], OUTPUT);
  }
  irrecv.enableIRIn(); // Start the receiver
}

void loop() {
  if (irrecv.decode()) {
    irdata = irrecv.decodedIRData.command;
    Serial.println(irdata);
    irrecv.resume();
  }

  if (irdata == power) {
    power_on = !power_on;
    led_power();
    irdata = "";
  }

  if (irdata == func_one && power_on) {
    led_one();
  }

  if (irdata == func_two && power_on) {
    led_two();
  }

  if (irdata == func_three && power_on) {
    led_three();
  }

  if (irdata == func_four && power_on) {
    led_four();
  }

}


void led_one() {
  unsigned long currentMillis = millis();  // Get the current time

  // Check if it's time to change the state of the LEDs
  if (currentMillis - previousMillis >= interval) {
    // Save the current time as the previous time for the next iteration
    previousMillis = currentMillis;

    // Turn off the current LED
    digitalWrite(ledPins[currentLed], LOW);

    // Generate a random number to select the next LED
    int nextLed = random(numLeds);

    // Make sure we don't select the same LED again
    while (nextLed == currentLed) {
      nextLed = random(numLeds);
    }

    // Update the current LED
    currentLed = nextLed;

    // Turn on the new LED
    digitalWrite(ledPins[currentLed], HIGH);
  }

}

void led_two() {
  unsigned long currentMillis = millis();  // Get the current time

  // Check if it's time to change the state of the LEDs
  if (currentMillis - previousMillis >= interval) {
    // Save the current time as the previous time for the next iteration
    previousMillis = currentMillis;

    // Turn off the previous LED
    digitalWrite(ledPins[currentLed], LOW);

    // Move to the next LED
    currentLed = (currentLed + 1) % numLeds;

    // Turn on the current LED
    digitalWrite(ledPins[currentLed], HIGH);
  }
}


void led_three() {
  unsigned long currentMillis = millis();  // Get the current time

  // Check if it's time to change the state of the LEDs
  if (currentMillis - previousMillis >= interval) {
    // Save the current time as the previous time for the next iteration
    previousMillis = currentMillis;

    // Turn off all LEDs
    for (int i = 0; i < numLeds; i++) {
      digitalWrite(ledPins[i], LOW);
    }

    // Turn on the next LED
    digitalWrite(ledPins[currentLed], HIGH);

    // Calculate the index of the LED on the other end
    int oppositeLed = (numLeds - 1) - currentLed;

    // Turn on the LED on the other end
    digitalWrite(ledPins[oppositeLed], HIGH);

    // Move to the next LED
    currentLed = (currentLed + 1) % numLeds;
  }
}


void led_four() {
  unsigned long currentMillis = millis();  // Get the current time

  // Check if it's time to change the state of the LEDs
  if (currentMillis - previousMillis >= interval) {
    // Save the current time as the previous time for the next iteration
    previousMillis = currentMillis;

    // Turn off all LEDs
    for (int i = 0; i < numLeds; i++) {
      digitalWrite(ledPins[i], LOW);
    }

    // Turn on the LEDs for the first set (pins 2 to 11)
    digitalWrite(ledPins[currentLed], HIGH);
    //digitalWrite(ledPins[currentLed + numLeds], HIGH);

    // Move to the next LED position for the first set
    if (currentLed < numLeds - 1 && !reverseDirection) {
      // Move forward
      currentLed++;
    } else {
      // Change direction and move backward
      reverseDirection = true;
      currentLed--;

      // If reached the first LED, change direction to forward again
      if (currentLed == 0) {
        reverseDirection = false;
      }
    }
  }
}


void led_power() {
  if (power_on) {
    for (int i = 0; i < numLeds; i++) {
      digitalWrite(ledPins[i], HIGH);
    }
  } else {
    for (int i = 0; i < numLeds; i++) {
      digitalWrite(ledPins[i], LOW);
    }
  }
}