// Deleting the given set alarm time 
void deleteLastCharacter(){
  if (cursorPos > 0){
    cursorPos--;
    if(cursorPos==2)
    cursorPos=1;
  }
}

// Clearing all the set alarm time
void clearArray(){
  arrayIndex = 0;
  for (int i = 0; i < maxInput; i++){
    inputArray[i] = '\0';
  }
}

// Clears the LCD
void clearLCD(){
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Input");
  lcd.setCursor(0, 1);
  lcd.print("Cleared");
  delay(2000); // Display the error message for 2 seconds
  lcd.clear();
}

// Displays an Error message if the user inputs a higher number of 24-H 
void displayErrorMessage() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Error Time Input");
  lcd.setCursor(0, 1);
  lcd.print("Only 24-H Time");
  delay(2000); // Display the error message for 2 seconds
  lcd.clear();
}

// Displaying the Current Time
//is this code applicable enough to make the time continuous? 
void displayCurrentTime(void *currentTime) {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Current Time:");
  lcd.setCursor(0, 1);
  lcd.print(currentTime.hour(), DEC);
  lcd.print(":");
  lcd.print(currentTime.minute(), DEC);
  lcd.print(":");
  lcd.print(currentTime.second(), DEC);
}

// Setting the Alarm Time (Where they keypad functionalities are) 
void setAlarmTime(void *pvParameters) {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Set Alarm " + String(currentAlarm + 1) + ":");
  lcd.setCursor(0, 1);
  lcd.print("HH:MM");
  
  char key = NO_KEY;
  while (key != '#') {
    key = keypad.getKey();
    
    if(xSemaphoreTake(setAlarm2, portMAX_DELAY) == pdTRUE){
    if (key != NO_KEY){
      if(((inputBuffer[0] - '0') * 10 + (inputBuffer[1] - '0') <= 23) && (((inputBuffer[3] - '0') * 10)<= 50)){
        if (key >= '0' && key <= '9'){
        inputBuffer[cursorPos] = key;
        lcd.setCursor(cursorPos, 1);
        lcd.print(key);
        cursorPos++;
          if (cursorPos == 2){
            cursorPos += 1;  
          }
          if (cursorPos == 5)
          break;
        }

        else if (key == '*') {
          lcd.clear();
          lcd.setCursor(0, 0);
          lcd.print("Set Alarm " + String(currentAlarm + 1) + ":");
          lcd.setCursor(0, 1);
          lcd.print("HH:MM");
          cursorPos = 0;
        }

        else if (key == 'D'){
          deleteLastCharacter();
          lcd.setCursor(cursorPos, 1);
        }

        else if (key == 'C'){
          DateTime now = rtc.now();
          clearArray();
          clearLCD();
          lcd.setCursor(0, 0);
          lcd.print("Current Time:");
          lcd.setCursor(0, 1);
          lcd.print(now.hour(), DEC);
          lcd.print(":");
          lcd.print(now.minute(), DEC);
          lcd.print(":");
          lcd.print(now.second(), DEC);
          vTaskSuspend();
        }
      }
      else{
        DateTime now = rtc.now();
        displayErrorMessage();
        lcd.clear();
        lcd.setCursor(0, 0);
        lcd.print("Current Time:");
        lcd.setCursor(0, 1);
        lcd.print(now.hour(), DEC);
        lcd.print(":");
        lcd.print(now.minute(), DEC);
        lcd.print(":");
        lcd.print(now.second(), DEC);        
      }
    }
    xSemaphoreGive(setAlarm2);
  }
  }
  if (cursorPos == 5) {
    alarms[currentAlarm].hour = (inputBuffer[0] - '0') * 10 + (inputBuffer[1] - '0');
    alarms[currentAlarm].minute = (inputBuffer[3] - '0') * 10 + (inputBuffer[4] - '0');
    alarms[currentAlarm].enabled = true;
    
    lcd.setCursor(0, 1);
    lcd.print("Alarm set   ");
    delay(1000);
    lcd.clear();
    
    currentAlarm++;
    if (currentAlarm >= 3) {
      currentAlarm = 0;
    }
  }
  
  lcd.setCursor(0, 0);
  lcd.print("Press '*' to set");
  lcd.setCursor(0, 1);
  lcd.print("alarm time");
  delay(3000);
  cursorPos = 0;
}

// The Buzzer of the Alarm
void triggerAlarm(void *int alarmIndex) {
  if(xSemaphoreTake(triggerAlarm, portMAX_DELAY) == pdTRUE){
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("ALARM " + String(alarmIndex + 1) + "!");
  xSemaphoreGive(triggerAlarm);
  delay(2000); // Delay to show the alarm message
  delay(100);
  tone(buzzer, 1000, 200);
  delay(100);
  tone(buzzer, 2000, 200);
  delay(100);
  tone(buzzer, 3000, 200);
  delay(100);
  tone(buzzer, 4000, 200);
  delay(100);
  return;// in freeRTOS go back to normal when button clicked?
  }
}