#include <FastLED.h>
#include "RTClib.h"
#include <Wire.h>

#define LED_PIN 7
#define NUM_LEDS 4

const byte interruptMode = 2;
const byte interruptTime = 3;

CRGB leds[NUM_LEDS];
RTC_DS1307 rtc;

uint8_t hour;
uint8_t minute;
uint8_t second;
uint8_t Mode;
uint8_t SetTime;
uint8_t blink = 5;
uint32_t BlinkTimer;
uint32_t ResetTime;
uint32_t lastTime;
uint32_t lastTimeMode;
int ModePin = 10;
int TimePin = 11;
bool SwitchMode = false;
bool SwitchTime = false;

void setup() {
  Serial.begin(9600);
  FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);
  pinMode(ModePin, INPUT_PULLUP);
  pinMode(TimePin, INPUT_PULLUP);

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

  pinMode(interruptMode, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(interruptMode), Modeinterrupt, CHANGE);

  pinMode(interruptTime, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(interruptTime), Timeinterrupt, CHANGE);

  Serial.println("Setting the time...");
  rtc.adjust(DateTime(2023, 4, 27, 0, 0, 0));  // Set initial time if RTC is reset
}

void loop() {
  // Get current time from RTC
  DateTime now = rtc.now();
  hour = now.hour();
  minute = now.minute();
  second = now.second();

  // Serial Monitor output
  Serial.print(hour, DEC);
  Serial.print(':');
  Serial.print(minute, DEC);
  Serial.print(':');
  Serial.print(second, DEC);
  Serial.print(':');
  Serial.print(Mode, DEC);
  Serial.print(':');
  Serial.print(SetTime, DEC);
  Serial.println();

  // Mode Switch
  switch (Mode) {
    case 0:  // Show the Time
      Clock();
      ResetTime = millis() + 30000;
      break;
    case 1:  // Setting the minute
      BlinkMinute();
      TimeSetMinute1();
      if (ResetTime < millis()) {
        Mode = 0;
      }
      break;
    case 2:  // Setting the minute x10
      BlinkMinute();
      TimeSetMinute10();
      if (ResetTime < millis()) {
        Mode = 0;
      }
      break;
    case 3:  // Setting the hours
      BlinkHour();
      TimeSetHour();
      if (ResetTime < millis()) {
        Mode = 0;
      }
      break;
    case 4:  // Lightshow if you press both Buttons shortly after exiting mode 3
      Lightshow();
      break;
  }
}

void TimeSetMinute1() {
  if (SetTime == 1) {
    rtc.adjust(DateTime(rtc.now().year(), rtc.now().month(), rtc.now().day(), rtc.now().hour(), (rtc.now().minute() + 1) % 60, rtc.now().second()));
    SetTime = 0;
  }
}

void TimeSetMinute10() {
  if (SetTime == 1) {
    rtc.adjust(DateTime(rtc.now().year(), rtc.now().month(), rtc.now().day(), rtc.now().hour(), (rtc.now().minute() + 10) % 60, rtc.now().second()));
    SetTime = 0;
  }
}

void TimeSetHour() {
  if (SetTime == 1) {
    rtc.adjust(DateTime(rtc.now().year(), rtc.now().month(), rtc.now().day(), (rtc.now().hour() + 1) % 24, rtc.now().minute(), rtc.now().second()));
    SetTime = 0;
  }
}

void Timeinterrupt() {
  if (millis() > (lastTime + 500)) {
    if (Mode != 0) {
      if (SwitchTime == false) {
        SetTime = 1;
      } else {
        SwitchTime = false;
      }
      lastTime = millis();
    }
  }
}

void Modeinterrupt() {
  if (digitalRead(interruptMode) == HIGH) {
    if (millis() > (lastTimeMode + 1000)) {
      if (SwitchMode == false) {
        Mode++;
        Mode = Mode % 5;  // Number of Modes
        delay(400);
      } else {
        SwitchMode = false;
      }
      lastTimeMode = millis();
    }
  }
}

void Clock() {
  // Hour Rings (1 & 2)
  switch (hour) {
    case 0: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(4, 4, 4); break;
    case 1: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(25, 5, 0); break;
    case 2: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(255, 0, 0); break;
    case 3: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(255, 64, 0); break;
    case 4: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(255, 196, 0); break;
    case 5: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(0, 255, 0); break;
    case 6: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(0, 0, 255); break;
    case 7: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(200, 0, 255); break;
    case 8: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(48, 48, 48); break;
    case 9: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(255, 255, 255); break;
    case 10: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(4, 4, 4); break;
    case 11: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(25, 5, 0); break;
    case 12: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(255, 0, 0); break;
    case 13: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(255, 64, 0); break;
    case 14: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(255, 196, 0); break;
    case 15: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(0, 255, 0); break;
    case 16: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(0, 0, 255); break;
    case 17: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(196, 0, 255); break;
    case 18: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(48, 48, 48); break;
    case 19: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(255, 255, 255); break;
    case 20: leds[3] = CRGB(255, 0, 0); leds[2] = CRGB(4, 4, 4); break;
    case 21: leds[3] = CRGB(255, 0, 0); leds[2] = CRGB(25, 5, 0); break;
    case 22: leds[3] = CRGB(255, 0, 0); leds[2] = CRGB(255, 0, 0); break;
    case 23: leds[3] = CRGB(255, 0, 0); leds[2] = CRGB(255, 64, 0); break;
  }
 
 
  //////////////////////////////////////////Ring 3 & 4//////////////////////////////////////////
  switch (minute) {
    case 0: leds[1] = CRGB(4, 4, 4); leds[0] = CRGB(4, 4, 4); FastLED.show(); break;
    case 1: leds[1] = CRGB(4, 4, 4); leds[0] = CRGB(25, 5, 0); FastLED.show(); break;
    case 2: leds[1] = CRGB(4, 4, 4); leds[0] = CRGB(255, 0, 0); FastLED.show(); break;
    case 3: leds[1] = CRGB(4, 4, 4); leds[0] = CRGB(255, 64, 0); FastLED.show(); break;
    case 4: leds[1] = CRGB(4, 4, 4); leds[0] = CRGB(255, 196, 0); FastLED.show(); break;
    case 5: leds[1] = CRGB(4, 4, 4); leds[0] = CRGB(0, 255, 0); FastLED.show(); break;
    case 6: leds[1] = CRGB(4, 4, 4); leds[0] = CRGB(0, 0, 255); FastLED.show(); break;
    case 7: leds[1] = CRGB(4, 4, 4); leds[0] = CRGB(200, 0, 255); FastLED.show(); break;
    case 8: leds[1] = CRGB(4, 4, 4); leds[0] = CRGB(48, 48, 48); FastLED.show(); break;
    case 9: leds[1] = CRGB(4, 4, 4); leds[0] = CRGB(255, 255, 255); FastLED.show(); break;
    case 10: leds[1] = CRGB(25, 5, 0); leds[0] = CRGB(4, 4, 4); FastLED.show(); break;
    case 11: leds[1] = CRGB(25, 5, 0); leds[0] = CRGB(25, 5, 0); FastLED.show(); break;
    case 12: leds[1] = CRGB(25, 5, 0); leds[0] = CRGB(255, 0, 0); FastLED.show(); break;
    case 13: leds[1] = CRGB(25, 5, 0); leds[0] = CRGB(255, 64, 0); FastLED.show(); break;
    case 14: leds[1] = CRGB(25, 5, 0); leds[0] = CRGB(255, 196, 0); FastLED.show(); break;
    case 15: leds[1] = CRGB(25, 5, 0); leds[0] = CRGB(0, 255, 0); FastLED.show(); break;
    case 16: leds[1] = CRGB(25, 5, 0); leds[0] = CRGB(0, 0, 255); FastLED.show(); break;
    case 17: leds[1] = CRGB(25, 5, 0); leds[0] = CRGB(196, 0, 255); FastLED.show(); break;
    case 18: leds[1] = CRGB(25, 5, 0); leds[0] = CRGB(48, 48, 48); FastLED.show(); break;
    case 19: leds[1] = CRGB(25, 5, 0); leds[0] = CRGB(255, 255, 255); FastLED.show(); break;
    case 20: leds[1] = CRGB(255, 0, 0); leds[0] = CRGB(4, 4, 4); FastLED.show(); break;
    case 21: leds[1] = CRGB(255, 0, 0); leds[0] = CRGB(25, 5, 0); FastLED.show(); break;
    case 22: leds[1] = CRGB(255, 0, 0); leds[0] = CRGB(255, 0, 0); FastLED.show(); break;
    case 23: leds[1] = CRGB(255, 0, 0); leds[0] = CRGB(255, 64, 0); FastLED.show(); break;
    case 24: leds[1] = CRGB(255, 0, 0); leds[0] = CRGB(255, 196, 0); FastLED.show(); break;
    case 25: leds[1] = CRGB(255, 0, 0); leds[0] = CRGB(0, 255, 0); FastLED.show(); break;
    case 26: leds[1] = CRGB(255, 0, 0); leds[0] = CRGB(0, 0, 255); FastLED.show(); break;
    case 27: leds[1] = CRGB(255, 0, 0); leds[0] = CRGB(200, 0, 255); FastLED.show(); break;
    case 28: leds[1] = CRGB(255, 0, 0); leds[0] = CRGB(48, 48, 48); FastLED.show(); break;
    case 29: leds[1] = CRGB(255, 0, 0); leds[0] = CRGB(255, 255, 255); FastLED.show(); break;
    case 30: leds[1] = CRGB(255, 64, 0);leds[0] = CRGB(4, 4, 4); FastLED.show(); break;
    case 31: leds[1] = CRGB(255, 64, 0); leds[0] = CRGB(25, 5, 0); FastLED.show(); break;
    case 32: leds[1] = CRGB(255, 64, 0); leds[0] = CRGB(255, 0, 0); FastLED.show(); break;
    case 33: leds[1] = CRGB(255, 64, 0); leds[0] = CRGB(255, 64, 0); FastLED.show(); break;
    case 34: leds[1] = CRGB(255, 64, 0); leds[0] = CRGB(255, 196, 0); FastLED.show(); break;
    case 35: leds[1] = CRGB(255, 64, 0); leds[0] = CRGB(0, 255, 0); FastLED.show(); break;
    case 36: leds[1] = CRGB(255, 64, 0); leds[0] = CRGB(0, 0, 255); FastLED.show(); break;
    case 37: leds[1] = CRGB(255, 64, 0); leds[0] = CRGB(196, 0, 255); FastLED.show(); break;
    case 38: leds[1] = CRGB(255, 64, 0); leds[0] = CRGB(48, 48, 48); FastLED.show(); break;
    case 39: leds[1] = CRGB(255, 64, 0); leds[0] = CRGB(255, 255, 255); FastLED.show(); break;
    case 40: leds[1] = CRGB(255, 196, 0); leds[0] = CRGB(4, 4, 4); FastLED.show(); break;
    case 41: leds[1] = CRGB(255, 196, 0); leds[0] = CRGB(25, 4, 0); FastLED.show(); break;
    case 42: leds[1] = CRGB(255, 196, 0); leds[0] = CRGB(255, 0, 0); FastLED.show(); break;
    case 43: leds[1] = CRGB(255, 196, 0); leds[0] = CRGB(255, 64, 0); FastLED.show(); break;
    case 44: leds[1] = CRGB(255, 196, 0); leds[0] = CRGB(255, 196, 0); FastLED.show(); break;
    case 45: leds[1] = CRGB(255, 196, 0); leds[0] = CRGB(0, 255, 0); FastLED.show(); break;
    case 46: leds[1] = CRGB(255, 196, 0); leds[0] = CRGB(0, 0, 255); FastLED.show(); break;
    case 47: leds[1] = CRGB(255, 196, 0); leds[0] = CRGB(196, 0, 255); FastLED.show(); break;
    case 48: leds[1] = CRGB(255, 196, 0); leds[0] = CRGB(48, 48, 48); FastLED.show(); break;
    case 49: leds[1] = CRGB(255, 196, 0); leds[0] = CRGB(255, 255, 255); FastLED.show(); break;
    case 50: leds[1] = CRGB(0, 255, 0); leds[0] = CRGB(4, 4, 4); FastLED.show(); break;
    case 51: leds[1] = CRGB(0, 255, 0); leds[0] = CRGB(25, 5, 0); FastLED.show(); break;
    case 52: leds[1] = CRGB(0, 255, 0); leds[0] = CRGB(255, 0, 0); FastLED.show(); break;
    case 53: leds[1] = CRGB(0, 255, 0); leds[0] = CRGB(255, 64, 0); FastLED.show(); break;
    case 54: leds[1] = CRGB(0, 255, 0); leds[0] = CRGB(255, 196, 0); FastLED.show(); break;
    case 55: leds[1] = CRGB(0, 255, 0); leds[0] = CRGB(0, 255, 0); FastLED.show(); break;
    case 56: leds[1] = CRGB(0, 255, 0); leds[0] = CRGB(0, 0, 255); FastLED.show(); break;
    case 57: leds[1] = CRGB(0, 255, 0); leds[0] = CRGB(196, 0, 255); FastLED.show(); break;
    case 58: leds[1] = CRGB(0, 255, 0); leds[0] = CRGB(48, 48, 48); FastLED.show(); break;
    case 59: leds[1] = CRGB(0, 255, 0); leds[0] = CRGB(255, 255, 255); FastLED.show(); break;
  }
  delay(100);
  
  FastLED.show();
}

void Lightshow() {
  for (int Dot = 0; Dot < NUM_LEDS; Dot++) {
    leds[Dot] = CRGB::Blue;
    FastLED.show();
    delay(30);
  }
  for (int Dot = 0; Dot < NUM_LEDS; Dot++) {
    leds[Dot] = CRGB::Green;
    FastLED.show();
    delay(30);
  }
  for (int Dot = 0; Dot < NUM_LEDS; Dot++) {
    leds[Dot] = CRGB::Red;
    FastLED.show();
    delay(30);
  }
}

void BlinkMinute() {
  if (BlinkTimer < millis()) {
    if (blink == 5) {
      blink = 0;
    } else {
      blink = 5;
    }
    BlinkTimer = millis() + 500;
  }
  if (blink == 5) {
    if (minute >= 0 && minute <= 9) leds[1] = CRGB(4, 4, 4);
    if (minute >= 10 && minute <= 19) leds[1] = CRGB(25, 5, 0);
    if (minute >= 20 && minute <= 29) leds[1] = CRGB(255, 0, 0);
    if (minute >= 30 && minute <= 39) leds[1] = CRGB(0, 255, 0);
    if (minute >= 40 && minute <= 49) leds[1] = CRGB(0, 0, 255);
    if (minute >= 50 && minute <= 59) leds[1] = CRGB(255, 255, 255);
  } else {
    leds[1] = CRGB(0, 0, 0);
  }
  FastLED.show();
}

void BlinkHour() {
  if (BlinkTimer < millis()) {
    if (blink == 5) {
      blink = 0;
    } else {
      blink = 5;
    }
    BlinkTimer = millis() + 500;
  }
  if (blink == 5) {
    switch (hour) {
      case 0: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(4, 4, 4); break;
      case 1: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(25, 5, 0); break;
      case 2: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(255, 0, 0); break;
      case 3: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(255, 64, 0); break;
      case 4: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(255, 196, 0); break;
      case 5: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(0, 255, 0); break;
      case 6: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(0, 0, 255); break;
      case 7: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(200, 0, 255); break;
      case 8: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(48, 48, 48); break;
      case 9: leds[3] = CRGB(4, 4, 4); leds[2] = CRGB(255, 255, 255); break;
      case 10: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(4, 4, 4); break;
      case 11: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(25, 5, 0); break;
      case 12: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(255, 0, 0); break;
      case 13: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(255, 64, 0); break;
      case 14: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(255, 196, 0); break;
      case 15: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(0, 255, 0); break;
      case 16: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(0, 0, 255); break;
      case 17: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(196, 0, 255); break;
      case 18: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(48, 48, 48); break;
      case 19: leds[3] = CRGB(25, 5, 0); leds[2] = CRGB(255, 255, 255); break;
      case 20: leds[3] = CRGB(255, 0, 0); leds[2] = CRGB(4, 4, 4); break;
      case 21: leds[3] = CRGB(255, 0, 0); leds[2] = CRGB(25, 5, 0); break;
      case 22: leds[3] = CRGB(255, 0, 0); leds[2] = CRGB(255, 0, 0); break;
      case 23: leds[3] = CRGB(255, 0, 0); leds[2] = CRGB(255, 64, 0); break;
    }
  } else {
    leds[3] = CRGB(0, 0, 0);
    leds[2] = CRGB(0, 0, 0);
  }
  FastLED.show();
}