#include <Wire.h>
#include <DS3231.h>
#include <TM1637Display.h>
#include <OneButton.h>
#include <Encoder.h>

// Definice pinů
#define LIGHT_SENSOR A6

#define DISPLAY_CLK 3
#define DISPLAY_DIO 2

#define ROTARY_S1 5
#define ROTARY_S2 4
#define ROTARY_KEY 6
#define BUZZER 7

#define ALARM_COUNT 3

DS3231 rtc;
TM1637Display display(DISPLAY_CLK, DISPLAY_DIO);
OneButton button(ROTARY_S2, true);
Encoder myEnc(ROTARY_S1, ROTARY_KEY);

byte LED_BRIGHT;
int LIGHT;
bool debug = true;
long oldPosition  = -999;
long newPosition;

int timeToSet;
signed char TimeMode = 0; //mode casu::0 = display,1 = set time hours,2 = set time minutes,3 = set alarm hours,4 = set alarm minutes
int AlarmMinutes = -1; //-1 = neulozeno
int AlarmHours = -1; //-1 = neulozeno

byte alarmDay;
byte alarmHour;
byte alarmHourNew;
byte alarmMinute;
byte alarmMinuteNew;
byte alarmSecond;
byte alarmBits;
bool alarmDayIsDay;
bool alarmH12;
bool alarmPM;

void LongClickHandler() {
  if (debug) {
    Serial.println("DEBUG: Hold Detected");}
  switch (TimeMode) {
    case 0:
      TimeMode = 1;
      Serial.println("DEBUG: 0 > 1");     
      break; 
    case 1:
      //alarmHourNew = newPosition;
      Serial.println("DEBUG: 1");
      break; 
    case 2:
      //alarmMinuteNew= newPosition;
      Serial.println("DEBUG: 2");      
    case 3:
      return;
      
    case 4:
      return;
      
  }
}

void setup() {  
  Wire.begin();
  if (debug) {
    Serial.begin(9600);
    Serial.println("DEBUG MODE ENABLED");
  }
  
  TimeMode = 0;
  pinMode(ROTARY_S2, INPUT_PULLUP);
  pinMode(BUZZER, OUTPUT);

  rtc.setClockMode(false);
  alarmDay = rtc.getDate();
  alarmHour = rtc.getHour(alarmH12, alarmPM);
  alarmMinute = rtc.getMinute();
  alarmSecond = INTF0;
  alarmBits = 0b00001110; 
  alarmDayIsDay = false;

  button.setPressMs(3000);
  button.attachLongPressStart(LongClickHandler);
  Serial.println("DEBUG: Setup Completed");
}

void loop() {
  button.tick();
  newPosition = myEnc.read() / 2;
  if (newPosition != oldPosition) {
    oldPosition = newPosition;
    timeToSet = map(newPosition,0,24,0,24);
    Serial.println(timeToSet); //encoder veci lul
  }

  LIGHT = analogRead(LIGHT_SENSOR);
  LED_BRIGHT = map(LIGHT, 100, 700, 1, 7);
  display.setBrightness(LED_BRIGHT);

  switch (TimeMode) {
  case 0:
    display.showNumberDecEx(alarmHour * 100 + alarmMinute, 0b11100000, true);  
    break;
  case 1:
    alarmHourNew = timeToSet; 
    display.showNumberDecEx(alarmHourNew * 100 + alarmMinuteNew, 0b11100000, true);  
    break;
  case 2:
    alarmMinuteNew = timeToSet;
    break;
  case 3:

    break;
  case 4:

    break;
  }
   
}