#include <Arduino.h>
#include <FastLED.h>

#define LED_PIN 3             // LED Strip Signal Connection
#define COLOR_UP_BUTTON_PIN 5  // Push Button for changing colors forward
#define RESET_COLOR_BUTTON_PIN 6  // Push Button for resetting color to initial
#define NUM_LEDS 24           // Total number of LEDs in the LED strip. You can safely go up to 80 LEDs.
//#define led Brightness 100
CRGB leds[NUM_LEDS];
int r, g, b;
int numb = 1;
int pres = 0;

int SPEED_KITT1 = 25; //toc do dem led

void setup() {
  Serial.begin(9600);
  FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);
  FastLED.clear();
  pinMode(COLOR_UP_BUTTON_PIN, INPUT_PULLUP);
  pinMode(RESET_COLOR_BUTTON_PIN, INPUT_PULLUP);  

// Sáng hết LED trắng
  for (int i = 0; i < (NUM_LEDS / 2); i++) {
    leds[(NUM_LEDS / 2) + i] = CRGB::White;
    leds[((NUM_LEDS / 2) - 1) - i] = CRGB::White;
    FastLED.show();
    ButtonScan();
    delay(100);
}

// Sáng LED đỏ từ LED đầu tiên và LED cuối cùng đến giữa
for (int i = 0; i < (NUM_LEDS / 2); i++) {
  leds[i] = CRGB::Red; // Sáng từ LED đầu tiên đến giữa
  leds[NUM_LEDS - 1 - i] = CRGB::Red; // Sáng từ LED cuối cùng đến giữa
  FastLED.show();
  ButtonScan();
  delay(100);

}
}

  


void loop() {
  ButtonScan();

  switch (numb) {
    case 1:
      Pattern1(1);
      break;
    case 2:
      Pattern1(2);
      break;
    case 3:
      Pattern1(3);
      break;
    case 4:
      Pattern1(4);
      break;

  }
}

void Pattern1(int ColourTrig) {
  switch (ColourTrig) {
    case 1:
      r = 200;
      g = b = 0;
      break;

    case 2:  
      r = g = b = 255;
      break;

    case 3:      
      b = g = 255;
      r = 0;
      break;

    case 4:
      r = g = b = 0;
      break;

  }

  fadeToBlackBy(leds, NUM_LEDS, 1); //SO cang to duoi cang ngan
  uint8_t u = beat8(SPEED_KITT1, 0); // toc do dem led
  uint8_t pos1 = map(u, 255, 0, 0, NUM_LEDS);
  leds[pos1] = CRGB(r, g, b);
  uint8_t pos2 = map(u, 0, 255, 0, NUM_LEDS);
  leds[pos2] = CRGB(r, g, b);
  FastLED.show();
  ButtonScan();
  delay(30);
}

void ButtonScan() {
  if (digitalRead(COLOR_UP_BUTTON_PIN) == 0) {
    if (pres == 0) {
      numb++;
      pres = 1;
      Serial.println("color");
    }
  } else if (digitalRead(RESET_COLOR_BUTTON_PIN) == 0) {
    if (pres == 0) {
      numb = 1; // Reset to the initial color
      pres = 1;
      Serial.println("reset");
    }
  } else {
    pres = 0;
  }

  if (numb == 22) {
    numb = 1;
  }
}