/**
   Arduino Digital Alarm Clock

   Copyright (C) 2020, Uri Shaked.
   Released under the MIT License.

*/

#include <SevSeg.h>
#include "Clock.h"
#include "config.h"

const int COLON_PIN = 13;

Clock clock;
SevSeg sevseg;

void setColon(bool value) {
  digitalWrite(COLON_PIN, value ? LOW : HIGH);
}

byte getHex(byte digit) {
  byte digitCodes[12] = {
    0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D,
    0x7D, 0x07, 0xFF, 0x6F, 0x76, 0x79
  };

  return digitCodes[digit];
}

void displayTime() {
  DateTime now = clock.now();

  byte digit1 = getHex(now.hour() < 12 ? 0 : 1);
  byte digit2 = getHex(now.hour() % 12);
  byte digit3 = getHex(floor((now.minute() * 60 + now.second()) / 72 / 12));
  byte digit4 = getHex(floor((now.minute() * 60 + now.second()) / 72 % 12));

  byte segs[4] = { digit1, digit2, digit3, digit4 };

  sevseg.setSegments(segs);
  setColon(true);
}

void setup() {
  Serial.begin(115200);

  clock.begin();

  pinMode(COLON_PIN, OUTPUT);

  byte digits = 4;
  byte digitPins[] = {2, 3, 4, 5};
  byte segmentPins[] = {6, 7, 8, 9, 10, 11, 12};
  bool resistorsOnSegments = false;
  bool updateWithDelays = false;
  bool leadingZeros = true;
  bool disableDecPoint = true;
  sevseg.begin(DISPLAY_TYPE, digits, digitPins, segmentPins, resistorsOnSegments,
               updateWithDelays, leadingZeros, disableDecPoint);
  sevseg.setBrightness(90);
}

void loop() {
  sevseg.refreshDisplay();

  displayTime();
}