#include <Adafruit_LEDBackpack.h>   // Support for the Backpack FeatherWing
#include <Adafruit_GFX.h>           // Adafruit's graphics library
#include <Adafruit_I2CDevice.h>
#include <SPI.h>
#include "ntp_time.h"

#define DISPLAY_ADDRESS 0x70
#define BRIGHTNESS 1

uint8_t brightness = BRIGHTNESS;

// Create display object
Adafruit_7segment clockDisplay = Adafruit_7segment();

void setupDisplay() {
  clockDisplay.begin(DISPLAY_ADDRESS);
  clockDisplay.setBrightness(brightness);
}

void displayTime() {
  int displayHour = hour();
  int displayMinute = minute();
  int displayValue = displayHour*100 + displayMinute;

  // Print the time on the display
  clockDisplay.print(displayValue, DEC);

  // Add zero padding when in 24 hour mode and it's midnight.
  // In this case the print function above won't have leading 0's
  // which can look confusing.  Go in and explicitly add these zeros.
  if (displayHour == 0) {
    clockDisplay.writeDigitNum(1, 0);
    if (displayMinute < 10) {
      clockDisplay.writeDigitNum(3, 0);
    }
  }
}

void changeBrightness(bool increase) {
  increase ? brightness = (brightness+2) % 15 : brightness = (brightness-2) % 15;
}

void adjustBrightness() {
  int currentHour = hour();
  if (currentHour > 9 && currentHour < 17) {
    brightness = 11;
  } else {
    brightness = 1;
  }
}

void displayColon(bool on) {
    clockDisplay.setBrightness(brightness);
	  clockDisplay.drawColon(on);
	  clockDisplay.writeDisplay();
}