#include "RTClib.h"
#include <TimerOne.h>
#include <Keypad.h>
RTC_DS1307 rtc;
const uint8_t ROWS = 4;
const uint8_t COLS = 3;
char keys[ROWS][COLS] = {
  { '1', '2', '3'},
  { '4', '5', '6'},
  { '7', '8', '9'},
  { '*', '0', '#'}
};


uint8_t colPins[COLS] = { 5, 4, 3 }; // Pins connected to C1, C2, C3, C4
uint8_t rowPins[ROWS] = { 9, 8, 7, 6 }; // Pins connected to R1, R2, R3, R4

Keypad keypad1(makeKeymap(keys), rowPins, colPins, ROWS, COLS);



Clock myClock(0, 0, 0, 0);


int sec = 59;
unsigned long t1;
unsigned long period;
bool _update1 = false;
bool _update2 = false;
int hour = 23;
int minute = 59;
int misec = 99;
void showTime()
{
  Serial.print(myClock._hour);
  Serial.print(":");
  Serial.print(myClock._minute);
  Serial.print(":");
  Serial.print(myClock._second);
}

void setup()
{
  // 初始化串口
  Serial.begin(9600);
  Serial.println(" ");

  // 初始化LCD 2004 顯示器
  myClock.init_LCD();
  lcd.backlight();
  Timer1.initialize(10000); // us單位
  Timer1.attachInterrupt(abc);
  //Timer1.initialize(10000);
  //Timer1.attachInterrupt(def);
  // 設定時鐘初始時間
  myClock.setTime(1, 2, 3, 1);
  myClock.getTime();

  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    abort();
  }

}

void loop()
{
  DateTime now = rtc.now();


  char key = keypad1.getKey();

  if (key != NO_KEY) {
    //Serial.println(key);
    lcd.setCursor(0, 0);
    lcd.print(key);
  }
  // 讀取Serial monitor輸入
      
      Serial.print(now.hour(), DEC);
      Serial.print(':');
      Serial.print(now.minute(), DEC);
      Serial.print(':');
      Serial.print(now.second(), DEC);
      Serial.println();
      myClock.setTime(now.hour(), now.minute(), now.second(), 2);
    
    if (_update1)
  {
    lcd.setCursor(0, 3);
    lcd.print(hour);
    lcd.print(":");
    lcd.print(minute);
    lcd.print(":");
    if (sec < 10){
      lcd.print("0");
      lcd.print(sec);
    }
    else
      lcd.print(sec);
    lcd.print(".");
    lcd.print(misec);
    _update1=false;
  }

  

  myClock.updateTime();
  myClock.displayTime();
  myClock.getTime();

  delay(1000);
}


void abc(){
  if (misec > 0)
    misec--;
  else{
    misec = 99;
    if (sec > 0){
      sec--;
    }
    else{
      sec = 59;
      if (minute > 0){
        minute--;
      }
      else{
        minute = 59;
        hour--;
      }
    }
  }
  _update1 = true;
}
// LCD 2004 顯示器初始化

LiquidCrystal_I2C lcd(0x27, 20, 4);

// 宣告時鐘類別

Clock::Clock(int h, int m, int s, int d) {
  _hour = h;
  _minute = m;
  _second = s;
  _mode = d;
}


void Clock::init_LCD() {
  lcd.init();
  lcd.backlight();
}

// 取得時鐘時間
void Clock::getTime() {
  Serial.print(_hour);
  Serial.print(":");
  Serial.print(_minute);
  Serial.print(":");
  Serial.println(_second);
}

// 設定時鐘時間

void Clock::setTime(int h, int m, int s, int d) {
  _hour = h;
  _minute = m;
  _second = s;
  _mode = d;
}

// 顯示時鐘時間

void Clock::displayTime() {
  lcd.setCursor(0,0);
      lcd.print("myClock:S1152040");
  
  lcd.setCursor(0,2);
  
  if (_hour < 10)
  {
    lcd.print("0");
    lcd.print(_hour);
  }
  if (_hour >= 10)
  {
    lcd. print(_hour);
  }

  lcd.print(":");

  if (_minute < 10)
  {
    lcd.print("0");
    lcd.print(_minute);
  }
  if (_minute >= 10)
  {
    lcd.print(_minute);
  }
  lcd.print(":");

  if (_second < 10)
  {
    lcd.print("0");
    lcd.print(_second);
  }
  if (_second >= 10)
  {
    lcd.print(_second);
  }

  lcd.print(" ");

  lcd.setCursor(0, 1);
  if (_mode == 1)
  {
    lcd.print("Manual");
  }
  else if (_mode == 2)
  {
    lcd.print("2023/04/16");
  }
}


// 更新時鐘時間

void Clock::updateTime() {
  _second++;

  if (_second >= 60) {
    lcd.setCursor(0,13);
    lcd.print(" ");
    _second = 0;
    _minute++;

    if (_minute >= 60) {
      lcd.setCursor(0,10);
      lcd.print(" ");
      _minute = 0;
      _hour++;

      if (_hour >= 24) {
        lcd.setCursor(0,7);
        lcd.print(" ");
        _hour = 0;

      }
    }
  }
};