#include <RTClib.h>

#include <Adafruit_DotStar.h>

#include <MAX7313.h>
#include "Wire.h"

#if defined(ARDUINO_ARCH_SAMD)
// for Zero, output on USB Serial console, remove line below if using programming port to program the Zero!
   #define Serial Serial
#endif

#define NUMPIXELS 1 // Number of LEDs in strip

// Here's how to control the LEDs from any two pins:
#define DATAPIN   7
#define CLOCKPIN   8

RTC_PCF8523 rtc;

char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};

Adafruit_DotStar dot = Adafruit_DotStar(
  NUMPIXELS, DATAPIN, CLOCKPIN, DOTSTAR_BGR);

WCN_MAX7313 maxim0;
WCN_MAX7313 maxim1;
WCN_MAX7313 maxim2;
WCN_MAX7313 maxim3;

byte segment[]  = { 0b11011110, //0
                    0b00000110, //1
                    0b11101010, //2
                    0b01101110, //3
                    0b00110110, //4
                    0b01111100, //5
                    0b11111100, //6
                    0b00001110, //7
                    0b11111110, //8
                    0b01111110};//9

int decimalState = LOW;             // ledState used to set the LED
unsigned long previousMillis = 0;        // will store last time LED was updated
const long interval = 1000;           // interval at which to blink (milliseconds)

void setup() {
    
    //Serial.begin(9600);

    Serial.begin(57600);
    if (! rtc.begin()) 
    {
      Serial.println("Couldn't find RTC");
      while (1);
    }
    if (! rtc.initialized()) 
    {
      Serial.println("RTC is NOT running!");
      // following line sets the RTC to the date & time this sketch was compiled
      rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
      // This line sets the RTC with an explicit date & time, for example to set
      // January 21, 2014 at 3am you would call:
      // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
    }

    
    
    maxim0.begin(0x27);
    maxim1.begin(0x20);
    maxim2.begin(0x21);
    maxim3.begin(0x25);
    
    
    delay(100);
    
    maxim0.pinMode(0,OUTPUT);
    maxim0.pinMode(1,OUTPUT);
    maxim0.pinMode(2,OUTPUT);
    maxim0.pinMode(3,OUTPUT);
    maxim0.pinMode(4,OUTPUT);
    maxim0.pinMode(5,OUTPUT);
    maxim0.pinMode(6,OUTPUT);
    maxim0.pinMode(7,OUTPUT);
    
    maxim1.pinMode(0,OUTPUT);
    maxim1.pinMode(1,OUTPUT);
    maxim1.pinMode(2,OUTPUT);
    maxim1.pinMode(3,OUTPUT);
    maxim1.pinMode(4,OUTPUT);
    maxim1.pinMode(5,OUTPUT);
    maxim1.pinMode(6,OUTPUT);
    maxim1.pinMode(7,OUTPUT);
    
    maxim2.pinMode(0,OUTPUT);
    maxim2.pinMode(1,OUTPUT);
    maxim2.pinMode(2,OUTPUT);
    maxim2.pinMode(3,OUTPUT);
    maxim2.pinMode(4,OUTPUT);
    maxim2.pinMode(5,OUTPUT);
    maxim2.pinMode(6,OUTPUT);
    maxim2.pinMode(7,OUTPUT);
    
    maxim3.pinMode(0,OUTPUT);
    maxim3.pinMode(1,OUTPUT);
    maxim3.pinMode(2,OUTPUT);
    maxim3.pinMode(3,OUTPUT);
    maxim3.pinMode(4,OUTPUT);
    maxim3.pinMode(5,OUTPUT);
    maxim3.pinMode(6,OUTPUT);
    maxim3.pinMode(7,OUTPUT);


    maxim0.allOutputOff();
    maxim1.allOutputOff();
    maxim2.allOutputOff();
    maxim3.allOutputOff();

    dot.begin(); // Initialize pins for output
    dot.show();  // Turn all LEDs off ASAP
    dot.setPixelColor(0,150,0,255);
    dot.show();  // Turn all LEDs off ASAP


}

void loop() {

  DateTime now = rtc.now();

  uint8_t hour = now.hour();
  uint8_t hour12 = now.hour()%12 == 0? 12 : now.hour()%12;
  uint8_t minute = now.minute();

  //display_hour((hour/10%10),(hour%10));
  display_hour((hour12/10%10),(hour12%10));
  display_minute((minute/10%10),(minute%10));
  //delay(1000);

  unsigned long currentMillis = millis();
    if (currentMillis - previousMillis >= interval) {
    // save the last time you blinked the LED
    previousMillis = currentMillis;

    // if the LED is off turn it on and vice-versa:
    if (decimalState == LOW) {
      decimalState = HIGH;
      maxim0.analogWrite(0,220);
      maxim1.analogWrite(0,220);
    } else {
      decimalState = LOW;
      maxim0.analogWrite(0,50);
      maxim1.analogWrite(0,50);
    }
  }
  
//
//  Serial.print(now.year(), DEC);
//    Serial.print('/');
//    Serial.print(now.month(), DEC);
//    Serial.print('/');
//    Serial.print(now.day(), DEC);
//    Serial.print(" (");
//    Serial.print(daysOfTheWeek[now.dayOfTheWeek()]);
//    Serial.print(") ");
//    Serial.print(now.hour(), DEC);
//    Serial.print(':');
//    Serial.print(now.minute(), DEC);
//    Serial.print(':');
//    Serial.print(now.second(), DEC);
//    Serial.println();


}

void display_hour(uint8_t  hourL,uint8_t  hourR)
{
      for (int bits = 7; bits > 0; bits--) {
     // Compare bits 7-0 in byte
     if (segment[hourL] & (1 << bits)) {
       maxim3.analogWrite(bits,220);
      }
      else {
        maxim3.analogWrite(bits,50);
      }
    }

    for (int bits = 7; bits > 0; bits--) {
     // Compare bits 7-0 in byte
     if (segment[hourR] & (1 << bits)) {
       maxim2.analogWrite(bits,220);
      }
      else {
        maxim2.analogWrite(bits,50);
      }
    }



}

void display_minute(uint8_t  minuteL, uint8_t  minuteR)
{
      for (int bits = 7; bits > 0; bits--) {
     // Compare bits 7-0 in byte
     if (segment[minuteL] & (1 << bits)) {
       maxim1.analogWrite(bits,220);
      }
      else {
        maxim1.analogWrite(bits,50);
      }
    }
    for (int bits = 7; bits > 0; bits--) {
     // Compare bits 7-0 in byte
     if (segment[minuteR] & (1 << bits)) {
       maxim0.analogWrite(bits,220);
      }
      else {
        maxim0.analogWrite(bits,50);
      }
    }

  
}

void display_digit(byte digit)
{
    for (int bits = 7; bits > -1; bits--) {
     // Compare bits 7-0 in byte
     if (segment[digit] & (1 << bits)) {
       maxim0.analogWrite(bits,200);
       maxim1.analogWrite(bits,200);
       maxim2.analogWrite(bits,200);
       maxim3.analogWrite(bits,200);
      }
      else {
        maxim0.analogWrite(bits,0);
        maxim1.analogWrite(bits,0);
        maxim2.analogWrite(bits,0);
        maxim3.analogWrite(bits,0);
      }
    }
}

void breathe(uint8_t wait)
{
   for (int i = 0;i<255;i++)
   {
      maxim0.analogWrite(1,i);
      maxim1.analogWrite(1,i);
      maxim2.analogWrite(1,i);
      maxim3.analogWrite(1,i);
      delay(wait);
   }
   for (int j = 255;j>-1;j--)
   {
      maxim0.analogWrite(1,j);
      maxim1.analogWrite(1,j);
      maxim2.analogWrite(1,j);
      maxim3.analogWrite(1,j);
      delay(wait);
   }
}
void rainbow(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256; j++) {
    for(i=0; i<dot.numPixels(); i++) {
      dot.setPixelColor(i, Wheel((i+j) & 255));
    }
    dot.show();
    delay(wait);
  }
}

// Input a value 0 to 255 to get a color value.
// The colours are a transition r - g - b - back to r.
uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return dot.Color(255 - WheelPos * 3, 0, WheelPos * 3);
  }
  if(WheelPos < 170) {
    WheelPos -= 85;
    return dot.Color(0, WheelPos * 3, 255 - WheelPos * 3);
  }
  WheelPos -= 170;
  return dot.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}