#define bt_start A0 //Tombol HIJAU
#define bt_stage A1 //Finish, bukan tombol MERAH
#define bt_load A2 //Tombol Load Nilai KUNING
#define bt_error A4 //bukan tombol BIRU

#define G_led 8
#define R_led 9

#define buzzer A3

int hh = 0, mm = 0, ss = 0, ms = 0, statStage1, statStage2, berhasil;
bool timerStart = false;
const byte LDR_PIN = A4;  // LDR Sensor pin
//----------------------------

#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <EEPROM.h>
#include <SPI.h>

char bufferRead[10];
String output, load;
// Define the number of devices we have in the chain and the hardware interface
// NOTE: These pin numbers will probably not work with your hardware and may
// need to be adapted
//#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
#define MAX_DEVICES 8

#define CLK_PIN 13
#define DATA_PIN 11
#define CS_PIN 3

// Hardware SPI connection
MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);
// Arbitrary output pins
// MD_Parola P = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);

void setup(void) {
  P.begin();
  pinMode(LDR_PIN, INPUT_PULLUP);
  Serial.begin(9600);

  //Setting Stopwatch
  pinMode(bt_start, INPUT_PULLUP);
  pinMode(bt_stage, INPUT_PULLUP);
  pinMode(bt_error, INPUT_PULLUP);
  pinMode(bt_load, INPUT_PULLUP);

  pinMode(R_led, OUTPUT);   // declare Red LED as output
  pinMode(G_led, OUTPUT);   // declare Green LED as output
  pinMode(buzzer, OUTPUT);  // declare Buzzer as output

  noInterrupts();  // disable all interrupts
  TCCR1A = 0;      // set entire TCCR1A register to 0  //set timer1 interrupt at 1kHz  // 1 ms
  TCCR1B = 0;      // same for TCCR1B
  TCNT1 = 0;       // set timer count for 1khz increments
  OCR1A = 1999;    // = (16*10^6) / (1000*8) - 1
  //had to use 16 bit timer1 for this bc 1999>255, but could switch to timers 0 or 2 with larger prescaler
  // turn on CTC mode
  TCCR1B |= (1 << WGM12);  // Set CS11 bit for 8 prescaler
  TCCR1B |= (1 << CS11);   // enable timer compare interrupt
  TIMSK1 |= (1 << OCIE1A);
  interrupts();
  //-----------------------------
}

void loop(void) {

  //atur cahaya dot matrix
  //byte ledIntensity = ledIntensitySelect(analogRead(LDR_PIN));
  P.setIntensity(10);  // value between 0 and 15 for brightness

  //cek_tombol
  if (digitalRead(bt_start) == 0) {
    P.print("Stage 1");
    delay(1000);
    buzzerStart();
    statStage1 = 1;
    timerStart = true;  // Start stopwatch
    delay(100);
  }

  //Stage 1 dan Error
  if (digitalRead(bt_error) == 0 && statStage1 == 1) {
    saveEEPROM();
    timerStart = false;  // Stop stopwatch
    output = loadEEPROM();
    P.print(output);
    //buzzerStop();
    P.print("Coba Lagi :(");
    berhasil = 0;
    delay(6000);
    statStage1 = 0;
    ms = 0, ss = 0, mm = 0, hh = 0;  // Reset stopwatch
  }

  //Stage 1 dan finish
  if (digitalRead(bt_stage) == 0 && statStage1 == 1) {
    saveEEPROM();
    timerStart = false;  // Stop stopwatch
    output = loadEEPROM();
    P.print(output);
    // buzzerStop();
    P.print("Ke Stage 2");
    delay(3000);
    P.print("1");
    delay(1000);
    P.print("2");
    delay(1000);
    P.print("3 Mulai!!!!!!");
    berhasil = 1;
    delay(1000);
    statStage1 = 0;
    statStage2 = 1;
  }

  //Stage 2
  if (statStage2 == 1) {
    output = loadEEPROM();
    timerStart = true;
  }

  //Stage 2 dan Error
  if (digitalRead(bt_error) == 0 && statStage2 == 1) {
    saveEEPROM();
    timerStart = false;  // Stop stopwatch
    output = loadEEPROM();
    P.print(output);
    //buzzerStop();
    P.print("Coba Lagi :(");
    berhasil = 0;
    delay(4000);
    statStage2 = 0;
    ms = 0, ss = 0, mm = 0, hh = 0;  // Reset stopwatch
  }

  //Stage 2 dan Finish
  if (digitalRead(bt_stage) == 0 && statStage2 == 1) {
    saveEEPROM();
    timerStart = false;
    P.print("Hebaat!");
    berhasil = 2;
    delay(6000);
    statStage2 = 0;
    output = loadEEPROM();
    P.print(output);
    delay(1000);
    P.print("");
    delay(1000);
    P.print(output);
    delay(1000);
    P.print("");
    delay(1000);
    P.print(output);
    delay(1000);
    P.print("");
    delay(1000);
    P.print(output);
    delay(5000);
    ms = 0, ss = 0, mm = 0, hh = 0;  // Reset stopwatch
    buzzerStop();
  }

  //---------------------

  //out ke dot matrix
  output = outputStrClock();
  P.print(output);

  if (statStage1 == 0 && statStage2 == 0) {
    P.print("Yuk Mainkan!!!");
    int n = 0;
    while (n < 2000) {
      n++;
      delay(1);
      if (digitalRead(bt_start) == 0) {
        statStage1 = 1;
        n=2020;
      }
      dataAkhir();
    }
    P.print("Gratis...");

    n = 0;
    while (n < 2000) {
      n++;
      delay(1);
      if (digitalRead(bt_start) == 0) {
        statStage1 = 1; 
        n = 2020;
      }
      dataAkhir();
    }
  }

  //Status LED
  if (timerStart == true) {
    digitalWrite(G_led, HIGH);  // Turn LED on.
    digitalWrite(R_led, LOW);   // Turn LED off.
  } else {
    digitalWrite(G_led, LOW);   // Turn LED off.
    digitalWrite(R_led, HIGH);  // Turn LED on.
  }

  digitalWrite(buzzer, LOW);
}

String outputStrClock() {
  String _output;
  _output = (hh / 10) % 10;
  _output.concat(hh % 10);
  _output.concat(":");
  _output.concat((mm / 10) % 10);
  _output.concat(mm % 10);
  _output.concat(":");
  _output.concat((ss / 10) % 10);
  _output.concat(ss % 10);
  _output.concat(":");
  _output.concat((ms / 100) % 10);
  _output.concat((ms / 10) % 10);
  _output.concat(ms % 10);
  return _output;
}

void saveEEPROM() {
  EEPROM.put(0, (hh / 10) % 10);
  EEPROM.put(1, hh % 10);
  EEPROM.put(3, (mm / 10) % 10);
  EEPROM.put(4, mm % 10);
  EEPROM.put(6, (ss / 10) % 10);
  EEPROM.put(7, ss % 10);
  EEPROM.put(9, (ms / 100) % 10);
  EEPROM.put(10, (ms / 10) % 10);
  EEPROM.put(11, ms % 10);
}

String loadEEPROM() {
  String _load;
  _load = EEPROM.read(0);
  _load.concat(EEPROM.read(1));
  _load.concat(":");
  _load.concat(EEPROM.read(3));
  _load.concat(EEPROM.read(4));
  _load.concat(":");
  _load.concat(EEPROM.read(6));
  _load.concat(EEPROM.read(7));
  _load.concat(":");
  _load.concat(EEPROM.read(9));
  _load.concat(EEPROM.read(10));
  _load.concat(EEPROM.read(11));
  return _load;
}

void buzzerStart() {
  digitalWrite(buzzer, HIGH);
  delay(1000);
  digitalWrite(buzzer, LOW);
  delay(1000);
  digitalWrite(buzzer, HIGH);
  delay(1000);
  digitalWrite(buzzer, LOW);
  delay(1000);
  digitalWrite(buzzer, HIGH);
  delay(1000);
  digitalWrite(buzzer, LOW);
}

void buzzerStop() {
  digitalWrite(buzzer, HIGH);
  delay(200);
  digitalWrite(buzzer, LOW);
  delay(200);
  digitalWrite(buzzer, HIGH);
  delay(200);
  digitalWrite(buzzer, LOW);
  delay(200);
  digitalWrite(buzzer, HIGH);
  delay(200);
  digitalWrite(buzzer, LOW);
  delay(200);
  digitalWrite(buzzer, HIGH);
  delay(200);
  digitalWrite(buzzer, LOW);
  delay(200);
  digitalWrite(buzzer, HIGH);
  delay(200);
  digitalWrite(buzzer, LOW);
  delay(200);
  delay(10000);
}

void buzzerLoad() {
  digitalWrite(buzzer, HIGH);
  delay(100);
  digitalWrite(buzzer, LOW);
  delay(100);
  digitalWrite(buzzer, HIGH);
  delay(100);
  digitalWrite(buzzer, LOW);
  delay(100);
  digitalWrite(buzzer, HIGH);
  delay(100);
  digitalWrite(buzzer, LOW);
  delay(100);
  digitalWrite(buzzer, HIGH);
  delay(100);
  digitalWrite(buzzer, LOW);
  delay(100);
  digitalWrite(buzzer, HIGH);
  delay(100);
  digitalWrite(buzzer, LOW);
  delay(100);
  delay(5000);
}


byte ledIntensitySelect(int light) {
  byte _value = 0;
  if (light >= 0 && light <= 127) {
    _value = 15;
  } else if (light >= 128 && light <= 319) {
    _value = 10;
  } else if (light >= 320 && light <= 512) {
    _value = 5;
  }
  return _value;
};

ISR(TIMER1_COMPA_vect) {
  if (timerStart == true) {
    ms = ms + 1;
    if (ms > 999) {
      ms = 0;
      ss = ss + 1;
      if (ss > 59) {
        ss = 0;
        mm = mm + 1;
      }
      if (mm > 59) {
        mm = 0;
        hh = hh + 1;
      }
    }
  }
}

void dataAkhir() {
  if (digitalRead(bt_load) == 0 && statStage1 == 0 && statStage2 == 0) {
    output = loadEEPROM();
    if(berhasil == 2){
       P.print("Catatan Akhir");
       delay(3000);
       P.print(output);
       delay(3000);
    }
  }
}