#include <TM1637Display.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16,2);


// Define TM1637 pins
const int CLK_PIN = 2;
const int DIO_PIN = 3;
bool colon = false;
TM1637Display display(CLK_PIN, DIO_PIN);

// Define button pins
const int startButtonPin = A0;  //ปุ่มเขี่ยว
const int teamAScoreButtonPin = A1;  //ปุ่มแดงเพิ่มสกอร์ทีมA
const int teamBScoreButtonPin = A2;  //ปุ่มน้ำเงินเพิ่มสกอร์ทีมB
const int pauseButtonPin = A3;  //ปุ่มดำ หยุดเวลา
const int resetButtonPin = 6;  //ปุ่มเหลือง reset

// Define variables
int teamAScore = 0;
int teamBScore = 0;
int minutes = 10;
int seconds = 0;
bool isPaused = true;
bool pauseButtonState = false; // New variable to track pause button state

unsigned long pausedTime = 0;

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.clear();
  lcd.setCursor(5,0); //กำหนดตำแหน่งเริ่มต้นตัวอักษรเริ่มต้นที่ตัวที่ 5 แถวที่ 1
  lcd.print("Basketball");
  delay(1800);
  lcd.setCursor(2,1); 
  lcd.print("TEAM A VS TEAM B");
  delay(1600);
  lcd.clear();
  lcd.setCursor(5,1); 
  lcd.print("QUARTER ONE");
  delay(1600);
  lcd.clear();
  lcd.begin(20, 4);
  lcd.print("TeamA: 0  TeamB: 0");
  lcd.setCursor(4, 1);
  lcd.print("Time : 10:00");
  lcd.setCursor(2, 3);
  lcd.print("Press for Start!");

  pinMode(startButtonPin, INPUT_PULLUP);
  pinMode(teamAScoreButtonPin, INPUT_PULLUP);
  pinMode(teamBScoreButtonPin, INPUT_PULLUP);
  pinMode(pauseButtonPin, INPUT_PULLUP);
  pinMode(resetButtonPin, INPUT_PULLUP);

  
  display.setBrightness(0x0f);
  display.showNumberDec(minutes * 100 + seconds, 0b01000000);
}

void loop() {
  if (digitalRead(startButtonPin) == LOW && isPaused) {
    startCountdown();
  }

  // Check if the pause button state has changed
  bool newPauseButtonState = (digitalRead(pauseButtonPin) == LOW);
  if (newPauseButtonState != pauseButtonState) {
    if (newPauseButtonState) {
      // Pause or resume the game
      isPaused = !isPaused;
      if (isPaused) {
        // Stop countdown
        pausedTime = millis();
        lcd.setCursor(2, 3);
        lcd.print("  Game Pause !    ");
    } else {
        // Resume countdown
        unsigned long elapsedTime = millis() - pausedTime;
        pausedTime += elapsedTime; // Update pausedTime to account for paused time
        lcd.setCursor(2,3);
        lcd.print("  Game Running !");
        lcd.setCursor(11, 1);
        lcd.print("   ");
        lcd.setCursor(11, 1);
        lcd.print(minutes);
        lcd.print(":");

        if (seconds < 10) {
          lcd.print("0");
        }
        lcd.print(seconds);
      }
    }
    pauseButtonState = newPauseButtonState;
    delay(500);
  }

  if (!isPaused) {
    if (digitalRead(resetButtonPin) == LOW) {
      resetGame();
    }

    if (digitalRead(teamAScoreButtonPin) == LOW) {
      teamAScore++;
      updateScore();
      delay(80);
    }

    if (digitalRead(teamBScoreButtonPin) == LOW) {
      teamBScore++;
      updateScore();
      delay(80);
    }

    updateDisplay();
    updateCountdown();
  }
}

void startCountdown() {
  isPaused = false;
  lcd.setCursor(4, 1);
  lcd.print("Time :      ");
  lcd.setCursor(0, 3);
  lcd.print("     GAME START!    ");
}

void updateScore() {
  lcd.setCursor(7, 0);
  lcd.print("   ");
  lcd.setCursor(7, 0);
  lcd.print(teamAScore);
  lcd.setCursor(17, 0);
  lcd.print("   ");
  lcd.setCursor(17, 0);
  lcd.print(teamBScore);
}

void updateDisplay() {
  display.showNumberDecEx(minutes * 100 + seconds, 0b01000000);
}

void updateCountdown() {
  static unsigned long lastUpdateTime = 0;
  unsigned long currentTime = millis();
  unsigned long elapsedTime = currentTime - lastUpdateTime;

  if (elapsedTime >= 1000) {
      lastUpdateTime = currentTime;


    if (minutes == 0 && seconds == 0) {
      lcd.setCursor(0, 3);
      lcd.print("Time Out");
      if (teamAScore > teamBScore) {
        lcd.setCursor(13, 3);
        lcd.print("Team A Wins");
      } else if (teamBScore > teamAScore) {
        lcd.setCursor(13, 3);
        lcd.print("Team B Wins");
      } else {
        lcd.setCursor(13, 3);
        lcd.print("Draw");
      }
      display.showNumberDec(0);
      colon = !colon;
      isPaused = true;
    } else {
      if (seconds == 0) {
        seconds = 59;
        minutes--;
      } else {
        seconds--;
      }
      lcd.setCursor(11, 1);
      lcd.print("   ");
      lcd.setCursor(11, 1);
      lcd.print(minutes);
      lcd.print(":");
      if (seconds < 10) {
        lcd.print("0");
      }
      lcd.print(seconds);
      display.showNumberDecEx(minutes * 100 + seconds, colon);
    }
  }
}

void resetGame() {
  isPaused = true;
  teamAScore = 0;
  teamBScore = 0;
  minutes = 10;
  seconds = 0;

  lcd.setCursor(7, 0);
  lcd.print("   ");
  lcd.setCursor(7, 0);
  lcd.print(teamAScore);
  lcd.setCursor(17, 0);
  lcd.print("   ");
  lcd.setCursor(17, 0);
  lcd.print(teamBScore);
  lcd.setCursor(4, 1);
  lcd.print("Time : 10:00");
  lcd.setCursor(0, 3);
  lcd.print("  Press for Start!  ");

  display.showNumberDecEx(minutes * 100 + seconds);
}