// Code For 30 LED Developed By - UNBOX ELECTRONICS 
//https://www.youtube.com/watch?v=Uyt_0Yl9VnE(Please watch and Subscribe )

#include <DS3232RTC.h>
#include <Time.h>
#include <Wire.h>
#include "FastLED.h"
#define NUM_LEDS 30 //7*4+2 Confirguraiton Number of LED (remember 1 led per segment)
#define COLOR_ORDER BRG  // Define color order for your strip
#define DATA_PIN 9  // Data pin for led comunication
CRGB leds[NUM_LEDS]; // Define LEDs strip
byte digits[10][7] = {{0,1,1,1,1,1,1},  // Digit 0
                     {0,1,0,0,0,0,1},   // Digit 1
                     {1,1,1,0,1,1,0},   // Digit 2
                     {1,1,1,0,0,1,1},   // Digit 3
                     {1,1,0,1,0,0,1},   // Digit 4
                     {1,0,1,1,0,1,1},   // Digit 5
                     {1,0,1,1,1,1,1},   // Digit 6
                     {0,1,1,0,0,0,1},   // Digit 7
                     {1,1,1,1,1,1,1},   // Digit 8
                     {1,1,1,1,0,1,1}};  // Digit 9 | 2D Array for numbers on 7 segment
bool Dot = true;  //Dot state
bool DST = false; //DST state
int ledColor = 0x0000FF; // Color used (in hex)
void setup(){
//  Serial.begin(9600);
//  Wire.begin();
  LEDS.addLeds<WS2812B, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS); // Set LED strip type
  LEDS.setBrightness(255); // Set initial brightness
  pinMode(2, INPUT_PULLUP); // Define DST adjust button pin
  pinMode(4, INPUT_PULLUP); // Define Minutes adjust button pin
  pinMode(5, INPUT_PULLUP); // Define Hours adjust button pin
}
// Get time in a single number, if hours will be a single digit then time will be displayed 155 instead of 0155
int GetTime(){
  tmElements_t Now;
  RTC.read(Now);
  //time_t Now = RTC.Now();// Getting the current Time and storing it into a DateTime object
  int hour=Now.Hour;
  int minutes=Now.Minute;
  int second =Now.Second;
  if (second % 2==0) {Dot = false;}
    else {Dot = true;};
  return (hour*100+minutes);
  };
// Check Light sensor and set brightness accordingly
void BrightnessCheck(){
  const byte sensorPin = 3; // light sensor pin
  const byte brightnessLow = 5; // Low brightness value
  const byte brightnessHigh = 255; // High brightness value
  int sensorValue = digitalRead(sensorPin); // Read sensor
  if (sensorValue == 0) {LEDS.setBrightness(brightnessHigh);}
  else {LEDS.setBrightness(brightnessLow);} 
  };
   
// Convert time to array needet for display

void TimeToArray(){
  int Now = GetTime();  // Get time
  int cursor = 30;
//  Serial.print("Time is: ");Serial.println(Now);
  if (DST){   // if DST is true then add one hour
   Now+=100;
//   Serial.print("DST is ON, time set to : ");Serial.println(Now);
  };
  if (Dot){leds[15]=ledColor;
           leds[14]=ledColor;}   
    else  {leds[15]=0x000000;
           leds[14]=0x000000;
    };
  for(int i=1;i<=4;i++){
    int digit = Now % 10; // get last digit in time
    if (i==1){
//      Serial.print("Digit 4 is : ");Serial.print(digit);Serial.print(" ");
      cursor =22;
      for(int k=0; k<=6;k++){
//        Serial.print(digits[digit][k]);
        if (digits[digit][k]== 1){leds[cursor]=ledColor;}
         else if (digits[digit][k]==0){leds[cursor]=0x000000;};
         cursor ++;
        };
//      Serial.println();
      }
    else if (i==2){
//      Serial.print("Digit 3 is : ");Serial.print(digit);Serial.print(" ");
      cursor -=13;
      for(int k=0; k<=6;k++){
//        Serial.print(digits[digit][k]);
        if (digits[digit][k]== 1){leds[cursor]=ledColor;}
         else if (digits[digit][k]==0){leds[cursor]=0x000000;};
         cursor ++;
        };
//      Serial.println();
      }
    else if (i==3){
//      Serial.print("Digit 2 is : ");Serial.print(digit);Serial.print(" ");
      cursor =6;
      for(int k=0; k<=6;k++){
//        Serial.print(digits[digit][k]);
       if (digits[digit][k]== 1){leds[cursor]=ledColor;}
         else if (digits[digit][k]==0){leds[cursor]=0x000000;};
         cursor ++;
        };
//      Serial.println();
      }
    else if (i==4){
//      Serial.print("Digit1 is : ");Serial.print(digit);Serial.print(" ");
      cursor =0;

      for(int k=0; k<=6;k++){
//        Serial.print(digits[digit][k]);
        if (digits[digit][k]== 1){leds[cursor]=ledColor;}
         else if (digits[digit][k]==0){leds[cursor]=0x000000;};
         cursor ++;
        };
//      Serial.println();
      }
    Now /= 10;
  };
};
void DSTcheck(){
   int buttonDST = digitalRead(2);
//   Serial.print("DST is: ");Serial.println(DST);
   if (buttonDST == LOW){
    if (DST){
      DST=false;
//      Serial.print("Switching DST to: ");Serial.println(DST);
      }
      else if (!DST){
        DST=true;
//        Serial.print("Switching DST to: ");Serial.println(DST);
      };

   delay(500);  
   };
  }
void TimeAdjust(){
  int buttonH = digitalRead(5);
 int buttonM = digitalRead(4);
  if (buttonH == LOW || buttonM == LOW){
    delay(500);
    tmElements_t Now;
    RTC.read(Now);
    int hour=Now.Hour;
    int minutes=Now.Minute;
    int second =Now.Second;
      if (buttonH == LOW){
        if (Now.Hour== 23){Now.Hour=0;}
          else {Now.Hour += 1;};

        }else {
          if (Now.Minute== 59){Now.Minute=0;}

          else {Now.Minute += 1;};
          };
    RTC.write(Now);
    }
  }
void loop()  // Main loop
{
  BrightnessCheck(); // Check brightness
  DSTcheck(); // Check DST
  TimeAdjust(); // Check to se if time is geting modified
  TimeToArray(); // Get leds array with required configuration
  FastLED.show(); // Display leds array
}