#include <FastLED.h>
#include <TinyWireM.h>

byte read_DS3231[7];
unsigned long millisCapture = millis(), myDelay = 30000;
boolean colon_ONOFF = false;


#define LED_PIN     4
#define NUM_LEDS    32
#define BRIGHTNESS  255
#define LED_TYPE    WS2811
#define COLOR_ORDER GRB
CRGB leds[NUM_LEDS];
uint8_t gHue = 0;

int num_0[] = {2, 3, 5, 6, 7, 8};
int num_1[] = {3, 5};
int num_2[] = {2, 4, 5, 6, 8};
int num_3[] = {2, 3, 4, 5, 6};
int num_4[] = {3, 4, 5, 7};
int num_5[] = {2, 3, 4, 6, 7};
int num_6[] = {2, 3, 4, 6, 7, 8};
int num_7[] = {3, 5, 6};
int num_8[] = {2, 3, 4, 5, 6, 7, 8};
int num_9[] = {2, 3, 4, 5, 6, 7};

int num_10[] = {10, 11};

int* digit[10] = {num_0, num_1, num_2, num_3, num_4, num_5, num_6, num_7, num_8, num_9};
int digit_size[10] = {6, 2, 5, 5, 4, 5, 6, 3, 7, 6};
int bloom_sequence[32] = {17, 16, 14, 19, 15, 21, 13, 18, 11, 20, 9, 22, 12, 24, 10, 23, 7, 26, 8, 28, 6, 25, 4, 27, 2, 29, 5, 31, 3, 30, 1, 0};


void setup() {
  TinyWireM.begin();
  
  FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );
  FastLED.setBrightness(BRIGHTNESS);
  FastLED.clear();
}

void loop() {
  //write to set pointer register to seconds
  //-----------------------------------------
  TinyWireM.beginTransmission(0x68);
  TinyWireM.send(0x00);                 //point to Seconds register
  TinyWireM.endTransmission();
  //----------
  //read time
  //----------
  TinyWireM.requestFrom(0x68, 3);
  if(TinyWireM.available())
  {
    read_DS3231[0] = TinyWireM.receive(); //read seconds
    read_DS3231[1] = TinyWireM.receive(); //read minutes
    read_DS3231[2] = TinyWireM.receive(); //read hours
  }
  
  int minute = read_DS3231[1];
  int hour = read_DS3231[2];

  minute = (minute%16) + (minute/16)*10 ;
  hour = (hour%16) + (hour/16)*10 ;
  
  char period = hour>11?'P':'A';
  hour = hour>11?hour-12:hour;
  //minute = minute - 12;
  //hour = hour - 6;
  static uint8_t startIndex = 0;
  startIndex = startIndex + 1;

  int* m0 = digit[minute%10];
  int m0_size = digit_size[minute%10];
  int* m1 = digit[minute/10];
  int m1_size = digit_size[minute/10];
  int* h0 = digit[hour%10];
  int h0_size = digit_size[hour%10];
  int* h1 = digit[hour/10];
  int h1_size = digit_size[hour/10];

  int print_digit_size =1+ m0_size + m1_size + 2 + h0_size + h1_size;
  int print_digit[print_digit_size];

  print_digit[0] = period=='A'?1:0;
  for(int i=0; i<m0_size; i++){
    print_digit[1+i] = m0[i];
  }
  for(int i=0; i<m1_size; i++){
    print_digit[1+m0_size+i] = m1[i] + 7;
  }
  print_digit[1+m0_size+m1_size] = 16; 
  print_digit[1+m0_size+m1_size+1] = 17; 
  for(int i=0; i<h0_size; i++){
    print_digit[1+m0_size+m1_size+2+i] = h0[i] + 16;
  }
  for(int i=0; i<h1_size; i++){
    print_digit[1+m0_size+m1_size+2+h0_size+i] = h1[i] + 23;
  }
  // int digit_to_print[print_digit_size];
  // int itr = 0;
  // for(int i=0; i<32 ; i++){
  //   for(int j=0; j<print_digit_size; j++){
  //     if(bloom_sequence[i]==print_digit[j]){
  //       digit_to_print[itr] = bloom_sequence[i];
  //       itr++;
  //       break;
  //       }
  //     }
  //   }
  

  show_digit(print_digit, print_digit_size, startIndex);

  FastLED.show();
  FastLED.delay(750/60);
  FastLED.clear();
}

void show_digit(int digit_array[], int array_size, uint8_t colorIndex){
  for(int i=0; i<array_size; i++){
    int index = digit_array[i];
    leds[index] = ColorFromPalette( RainbowColors_p, colorIndex, BRIGHTNESS, LINEARBLEND);
    colorIndex += 3;
  }
}