#include <Adafruit_ILI9341.h>
#include <Adafruit_GFX.h>
#include <SPI.h>

#define TFT_CS 15
#define TFT_DC 4
#define TFT_RST -1

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);

int hours = 0, minutes = 0, seconds = 0;
bool running = false;
bool buttonPressed = false;

const int startStopPin = 34;
const int resetPin = 35;

unsigned long previousMillis = 0;
const long interval = 1000;  // Update the display every 1 second

void setup() {
  tft.begin();
  tft.setRotation(3);
  tft.fillScreen(ILI9341_BLACK); // Set the background color to black

  // Create separate round rectangles for hours, minutes, and seconds
  tft.fillRoundRect(20, 50, 80, 100, 10, ILI9341_DARKGREY); // Hours background (left)
  tft.fillRoundRect(120, 50, 80, 100, 10, ILI9341_DARKGREY); // Minutes background (center)
  tft.fillRoundRect(220, 50, 80, 100, 10, ILI9341_DARKGREY); // Seconds background (right)

  // Label
  tft.setCursor(80, 10);
  tft.setTextColor(ILI9341_WHITE); // White text
  tft.setTextSize(3);
  tft.print("Stopwatch");

  // Start/Stop Button
  tft.fillRoundRect(60, 170, 100, 40, 8, running ? ILI9341_RED : ILI9341_GREEN); // Red for Stop, Green for Start
  tft.setCursor(85, 178);
  tft.setTextColor(ILI9341_BLACK);
  tft.setTextSize(2);
  tft.print(running ? "Stop" : "Start");

  // Reset Button
  tft.fillRoundRect(180, 170, 100, 40, 8, ILI9341_BLUE); // Blue for Reset
  tft.setCursor(215, 178);
  tft.setTextColor(ILI9341_WHITE); // White text
  tft.print("Reset");

  // Initial display
  updateDisplay();
}

void updateDisplay() {
  tft.setTextColor(ILI9341_WHITE); // White text
  tft.setTextSize(4);

  // Display hours in the left rectangle
  tft.setCursor(35, 70);
  tft.print(hours < 10 ? "0" : "");
  tft.print(hours);

  // Display minutes in the center rectangle
  tft.setCursor(135, 70);
  tft.print(minutes < 10 ? "0" : "");
  tft.print(minutes);

  // Display seconds in the right rectangle
  tft.setCursor(235, 70);
  tft.print(seconds < 10 ? "0" : "");
  tft.print(seconds);
}

void loop() {
  int startStopState = digitalRead(startStopPin);
  int resetState = digitalRead(resetPin);

  unsigned long currentMillis = millis();

  if (startStopState == HIGH) {
    if (!buttonPressed) {
      buttonPressed = true;
      running = !running;
      tft.fillRoundRect(60, 170, 100, 40, 8, running ? ILI9341_RED : ILI9341_GREEN);
      tft.setCursor(85, 178);
      tft.setTextColor(ILI9341_BLACK);
      tft.setTextSize(2);
      tft.print(running ? "Stop" : "Start");
    }
  } else {
    buttonPressed = false;
  }

  if (resetState == HIGH) {
    if (!running) {
      hours = 0, minutes = 0, seconds = 0;
      updateDisplay();
    }
  }

  if (running && currentMillis - previousMillis >= interval) {
    previousMillis = currentMillis;
    seconds++;
    if (seconds == 60) {
      seconds = 0;
      minutes++;
      if (minutes == 60) {
        minutes = 0;
        hours++;
        if (hours == 24) {
          hours = 0;
        }
      }
    }
    updateDisplay();
  }
}