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

#define LED_PIN     5
#define NUM_LEDS    98
#define BRIGHTNESS  64
#define LED_TYPE    WS2812
#define COLOR_ORDER GRB
#define DS3231_I2C_ADDRESS 0x68

CRGB leds[NUM_LEDS];
CRGB primaryColor = CRGB::White;

byte second, minute, hour, dayOfWeek, dayOfMonth, month, year;

byte count;

// Convert normal decimal numbers to binary coded decimal
byte decToBcd(byte val)
{
  return( (val/10*16) + (val%10) );
}

// Convert binary coded decimal to normal decimal numbers
byte bcdToDec(byte val)
{
  return( (val/16*10) + (val%16) );
}

void setup()
{
  Wire.begin();
  Serial.begin(9600);
  FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS);
  FastLED.setBrightness(  BRIGHTNESS );
  count = 0;
  // set the initial time here:
  // DS3231 seconds, minutes, hours, day, date, month, year
  //setDS3231time(30,13,0,5,8,11,18);
}
void setDS3231time(byte second, byte minute, byte hour, byte dayOfWeek, byte
dayOfMonth, byte month, byte year)
{
  // sets time and date data to DS3231
  Wire.beginTransmission(DS3231_I2C_ADDRESS);
  Wire.write(0); // set next input to start at the seconds register
  Wire.write(decToBcd(second)); // set seconds
  Wire.write(decToBcd(minute)); // set minutes
  Wire.write(decToBcd(hour)); // set hours
  Wire.write(decToBcd(dayOfWeek)); // set day of week (1=Sunday, 7=Saturday)
  Wire.write(decToBcd(dayOfMonth)); // set date (1 to 31)
  Wire.write(decToBcd(month)); // set month
  Wire.write(decToBcd(year)); // set year (0 to 99)
  Wire.endTransmission();
}

void readDS3231time(byte *second, byte *minute, byte *hour, byte *dayOfWeek,
byte *dayOfMonth, byte *month, byte *year)
{
  Wire.beginTransmission(DS3231_I2C_ADDRESS);
  Wire.write(0); // set DS3231 register pointer to 00h
  Wire.endTransmission();
  Wire.requestFrom(DS3231_I2C_ADDRESS, 7);
  // request seven bytes of data from DS3231 starting from register 00h
  *second = bcdToDec(Wire.read() & 0x7f);
  *minute = bcdToDec(Wire.read());
  *hour = bcdToDec(Wire.read() & 0x3f);
  *dayOfWeek = bcdToDec(Wire.read());
  *dayOfMonth = bcdToDec(Wire.read());
  *month = bcdToDec(Wire.read());
  *year = bcdToDec(Wire.read());
}

void displayTime()
{
  //byte second, minute, hour, dayOfWeek, dayOfMonth, month, year;
  // retrieve data from DS3231
  readDS3231time(&second, &minute, &hour, &dayOfWeek, &dayOfMonth, &month,
  &year);
  // send it to the serial monitor
  Serial.print(hour, DEC);
  // convert the byte variable to a decimal number when displayed
  Serial.print(":");
  if (minute<10)
  {
    Serial.print("0");
  }
  Serial.print(minute, DEC);
  Serial.print(":");
  if (second<10)
  {
    Serial.print("0");
  }
  Serial.print(second, DEC);
  Serial.print(" ");
  Serial.print(dayOfMonth, DEC);
  Serial.print("/");
  Serial.print(month, DEC);
  Serial.print("/");
  Serial.print(year, DEC);
  Serial.print(" Day of week: ");
  switch(dayOfWeek){
  case 1:
    Serial.println("Sunday");
    break;
  case 2:
    Serial.println("Monday");
    break;
  case 3:
    Serial.println("Tuesday");
    break;
  case 4:
    Serial.println("Wednesday");
    break;
  case 5:
    Serial.println("Thursday");
    break;
  case 6:
    Serial.println("Friday");
    break;
  case 7:
    Serial.println("Saturday");
    break;
  }
}
void loop()
{
  displayTime(); // display the real-time clock data on the Serial Monitor,
  readDS3231time(&second, &minute, &hour, &dayOfWeek, &dayOfMonth, &month,
  &year);
  setLeds();
  FastLED.show();
  delay(1000); // every second
}

void setLeds(){
  clearAllLeds();
  /*
  leds[count] = CRGB::White;
  count++;
  if(count == NUM_LEDS)
    count = 0;
  */

  //byte second, minute, hour, dayOfWeek, dayOfMonth, month, year;
  setIt();
  setIs();
  setMinutes();
  setHours();
  setOclock();
  
}

void clearAllLeds(){
  for(int i = 0; i < NUM_LEDS; i++){
    leds[i] = CRGB::Black;
  }
}
void setIt(){
  //if(second & B00000001){
    leds[0] = primaryColor;
    leds[1] = primaryColor;
  //}
}

void setIs(){
  leds[2] = primaryColor;
  leds[3] = primaryColor;
}

void setMinutes(){
  if(minute < 3){
    //do nothing
  }
  else if(minute < 8){
    //5 past
    setFive();
    setMinutesLeds();
    setPast();
  }
  else if(minute < 13){
    //10 past
    setTen();
    setMinutesLeds();
    setPast();
  }
  else if(minute < 18){
    //Quarter past
    setQuarter();
    setPast();
  }
  else if(minute < 23){
    //20 past
    setTwenty();
    setMinutesLeds();
    setPast();
  }
  else if(minute < 28){
    //25 past
    setTwenty();
    setFive();
    setMinutesLeds();
    setPast();
  }
  else if(minute < 33){
    //half past
    setHalf();
    setPast();
  }
  else if(minute < 38){
    //25 to
    setTwenty();
    setFive();
    setMinutesLeds();
    setTo();
  }
  else if(minute < 43){
    //20 to
    setTwenty();
    setMinutesLeds();
    setTo(); 
  }
  else if(minute < 48){
    //Quarter to
    setQuarter();
    setTo();
  }
  else if(minute < 53){
    //10 to
    setTen();
    setMinutesLeds();
    setTo();
  }
  else if(minute < 58){
    //5 to
    setFive();
    setMinutesLeds();
    setTo();
  }
  else{
    //minutes = 58 or 59
    //do nothing
  }
}
void setFive(){
//five = leds 24-27
    for(int i = 24; i < 28; i++){
      leds[i] = primaryColor;
    }
}
void setTen(){
//ten = leds 4-6
    for(int i = 4; i < 7; i++){
      leds[i] = primaryColor;
    }
}

void setQuarter(){
//Quarter = leds 17-23
    for(int i = 17; i < 24; i++){
      leds[i] = primaryColor;
    }
}
void setTwenty(){
//twenty = leds 11-16
    for(int i = 11; i < 17; i++){
      leds[i] = primaryColor;
    }
}
void setHalf(){
//half = leds 7-10
    for(int i = 7; i < 11; i++){
      leds[i] = primaryColor;
    }
}

void setMinutesLeds(){
//minutes = leds 28-34
    for(int i = 28; i < 35; i++){
      leds[i] = primaryColor;
    }
}

void setPast(){
//past = leds 43-46
    for(int i = 43; i < 47; i++){
      leds[i] = primaryColor;
    }
}

void setTo(){
//to = leds 41-42
    for(int i = 41; i < 43; i++){
      leds[i] = primaryColor;
    }
}

void setHours(){
  if(hour > 12)
    hour = hour-12;
  if((hour == 1 && minute < 33) || (hour == 12 && minute >= 33) || (hour == 0 && minute >= 33)){
    //set 1
    for(int i = 38; i < 41; i++){
      leds[i] = primaryColor;
    }   
  }
  if((hour == 2 && minute < 33) || (hour == 1 && minute >= 33)){
    //set 2
    for(int i = 35; i < 38; i++){
      leds[i] = primaryColor;
    }
  }
  if((hour == 3 && minute < 33) || (hour == 2 && minute >= 33)){
    //set 3
    for(int i = 47; i < 52; i++){
      leds[i] = primaryCo"telemetry.enableTelemetry": falselor;
    }
  }
  if((hour == 4 && minute < 33) || (hour == 3 && minute >= 33)){
    //set 4
    for(int i = 52; i < 56; i++){
      leds[i] = primaryColor;
    }
  }
  if((hour == 5 && minute < 33) || (hour == 4 && minute >= 33)){
    //set 5
    for(int i = 56; i < 60; i++){
      leds[i] = primaryColor;
    }
  }
  if((hour == 6 && minute < 33) || (hour == 5 && minute >= 33)){
    //set 6
    for(int i = 70; i < 73; i++){
      leds[i] = primaryColor;
    }
  }
  if((hour == 7 && minute < 33) || (hour == 6 && minute >= 33)){
    //set 7
    for(int i = 65; i < 70; i++){
      leds[i] = primaryColor;
    }
  }
  if((hour == 8 && minute < 33) || (hour == 7 && minute >= 33)){
    //set 8
    for(int i = 60; i < 65; i++){
      leds[i] = primaryColor;
    }
  }
  if((hour == 9 && minute < 33) || (hour == 8 && minute >= 33)){
    //set 9
    for(int i = 73; i < 77; i++){
      leds[i] = primaryColor;
    }
  }
  if((hour == 10 && minute < 33) || (hour == 9 && minute >= 33)){
    //set 10
    for(int i = 77; i < 80; i++){
      leds[i] = primaryColor;
    }
  }
  if((hour == 11 && minute < 33) || (hour == 10 && minute >= 33)){
    //set 11
    for(int i = 80; i < 86; i++){
      leds[i] = primaryColor;
    }
  }
  if((hour == 12 && minute < 33) || (hour == 11 && minute >= 33)||(hour == 0 && minute < 33)){
    //set 12
    for(int i = 92; i < 98; i++){
      leds[i] = primaryColor;
    }
  }

}

void setOclock(){
  if((minute < 3) || (minute >= 58)){
    for(int i = 86; i < 92; i++){
      leds[i] = primaryColor;
    }
  }
}