#include <GyverOLED.h>
#include "RTClib.h"
#include <EncButton.h>


// Установка пинов
const int8_t MinPIN = 10;
const int8_t HourPIN = 11;
const int8_t SetPIN = 12;
const int8_t LightPIN = 2;

// Позиции и масштабы текста на дисплее
const int8_t TimeCursorX = 7;
const int8_t TimeCursorY = 30;
const int8_t LightModeCursorX = 90;
const int8_t LightModeCursorY = 0;
const int8_t SetModeCursorX = 0;
const int8_t SetModeCursorY = 0;

const int8_t TimeScale = 4;
const int8_t LightModeScale = 1;
const int8_t SetModeScale = 1;


// Период моргания
const int16_t FlashDalay = 500;

//Количество пунктов меню Set
const int8_t NumOfSetModeStatus = 7;

unsigned long LastMillis = 0;
bool VisibleFlash = 0;
int8_t LightMode = 0;
bool SetMode = false;
int8_t SetModeStatus = 1;

int16_t Year;
int8_t Month;
int8_t Day;
int8_t Hour;
int8_t Minute;
int8_t Second;


RTC_DS1307 rtc;
GyverOLED<SSD1306_128x64, OLED_NO_BUFFER> oled;

EncButton<EB_TICK, MinPIN> MinBtn;
EncButton<EB_TICK, HourPIN> HourBtn;
EncButton<EB_TICK, SetPIN> SetBtn;

void setup() {
rtc.begin();
Serial.begin(9600);
oled.init();
pinMode(MinPIN, INPUT_PULLUP);
pinMode(HourPIN, INPUT_PULLUP);
pinMode(SetPIN, INPUT_PULLUP);
pinMode(LightPIN, OUTPUT);

HourBtn.setStepTimeout(FlashDalay*2);

Show_LightMode();
}

void loop() {

if(SetMode) SetModeMenu();
else {
  SetBtn.tick(); 
  if (SetBtn.held()) SetMode = true;
  if (SetBtn.click()) {
    LightMode++;
    if (LightMode>2) LightMode = 0;
    Show_LightMode();
  };
  Show_Time();
  } 
digitalWrite(LightPIN, LightMode);

}

void Show_SetModeStatus(char* SetModeStatusText) {
oled.setScale(SetModeScale);
oled.setCursorXY(SetModeCursorX, SetModeCursorY);
oled.print(SetModeStatusText);
}

void SetModeMenu() {
switch (SetModeStatus) {
  case 1: Set_Time(); break;
  case 2: Show_SetModeStatus("date"); break;
  case 3: Show_SetModeStatus("year"); break;
  case 4: Show_SetModeStatus("rise del"); break;
  case 5: Show_SetModeStatus("down del"); break;
  case 6: Show_SetModeStatus("night off"); break;
  case 7: Show_SetModeStatus("night on "); break;
};

SetBtn.tick();
if (SetBtn.click()) {
  SetModeStatus++;
  if (SetModeStatus > NumOfSetModeStatus) {
    SetModeStatus = 1;
    SetMode = false; 
    Show_SetModeStatus("          ");
  }; 

};
}

void Show_Time() {
if (PassFlashDelay()) {
  VisibleFlash = !VisibleFlash;
  GetDateTime();
  oled.setScale(TimeScale);
  oled.setCursorXY(TimeCursorX,TimeCursorY);
  if (Hour < 10) oled.print("0");
  oled.print(Hour);
  if (VisibleFlash) oled.print(":");
  else oled.print(" ");
  if (Minute < 10) oled.print("0");
  oled.print(Minute);
}
}

void Show_LightMode() {
  oled.setScale(LightModeScale);
  oled.setCursorXY(LightModeCursorX, LightModeCursorY);
  oled.print("     ");
  oled.setCursorXY(LightModeCursorX, LightModeCursorY);
  switch (LightMode) {
    case 0: oled.print("* off");
    break;

    case 1: oled.print("*auto");
    break;

    case 2: oled.print("*  on");
    break;  
  }
  
}

void Set_Time() {
  Show_SetModeStatus("time");
  GetDateTime();
  if (PassFlashDelay()) {
    VisibleFlash = !VisibleFlash;
    oled.setScale(TimeScale);
    oled.setCursorXY(TimeCursorX,TimeCursorY);
    if (VisibleFlash) {
      if (Hour < 10) oled.print("0");
      oled.print(Hour);
      oled.print(":");
      if (Minute < 10) oled.print("0");
      oled.print(Minute);
    }
    else oled.print(F("  :  "));
  };

  HourBtn.tick();
  if (HourBtn.click()) {
    Hour++;
    if (Hour > 23) Hour = 0;
    rtc.adjust(DateTime(Year, Month, Day, Hour, Minute, Second));
  };
  if (HourBtn.step()) {
    Hour++;
    if (Hour > 23) Hour = 0;
    rtc.adjust(DateTime(Year, Month, Day, Hour, Minute, Second));
  };
}

void GetDateTime() {
  DateTime now = rtc.now();
  Year = now.year();
  Month = now.month();
  Day = now.day();
  Hour = now.hour();
  Minute = now.minute();
  Second = now.second();
}

bool PassFlashDelay() {
  bool r;
  if ((millis() - LastMillis) > FlashDalay) {
    r = true;
    LastMillis = millis();
  }
  else r = false;
  return r;
};