//
//    FILE: demo_displayTime.ino
//  AUTHOR: Rob Tillaart
// VERSION: 0.2.0
// PURPOSE: demo
//     URL: http://www.adafruit.com/products/1002
//     URL: https://github.com/RobTillaart/HT16K33


// sketch will work correctly up to 99:99
#include < NTPClient.h >
#include < ESP8266WiFi.h >
#include < WiFiUdp.h >
#include "HT16K33.h"

#define BUTTON D3

const char* ssid       = "MY_SSID";
const char* password   = "MYPASSWORD";
const long utcOffsetInSeconds = 3600;

HT16K33 seg(0x70);

static uint32_t last = 0;

// Define NTP Client to get time
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "pool.ntp.org", utcOffsetInSeconds);

bool pomodoro_mode = false;
int pomodoro_minutes = 25;
int pomodoro_seconds = 0;

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

  // Display init
  seg.begin();
  seg.brightness(7);
  Wire.setClock(100000);
  seg.displayOn();
  seg.setDigits(4);

  seg.displayClear();

  // Try to connect to Wifi network...
  WiFi.begin(ssid, password);

  int i=0;
  while ( WiFi.status() != WL_CONNECTED ) {
    delay ( 500 );
    seg.blink(i);
    Serial.print ( "." );
    if (i > 3) { i=0; }
  }

  Serial.println ( "Connected!" );

  seg.displayClear();
  timeClient.begin();    
  timeClient.update();

  // First time update
  seg.displayColon(true);
  seg.displayTime(timeClient.getHours(), timeClient.getMinutes());  

  last = millis();

  pinMode(BUTTON, INPUT_PULLUP);
  
}

void loop()
{  

  if (digitalRead(BUTTON) == LOW) { Serial.println("CLICK!"); pomodoro_mode = true; delay(100); }

  if ((millis()-last) > (100*1)) // Every minute
  {
    if (pomodoro_mode == true)
    {
      seg.displayTime(pomodoro_minutes, pomodoro_seconds);

      if (pomodoro_seconds == 0)
      {
        if (pomodoro_minutes > 0) { pomodoro_minutes--; pomodoro_seconds = 59; }
        else { pomodoro_mode = false; pomodoro_minutes=25; /* POMODORO END! */ }
      }
      else { pomodoro_seconds--; }
    }
    else
    {
      //timeClient.update();
  
      //Serial.print(daysOfTheWeek[timeClient.getDay()]);
      Serial.print(", ");
      Serial.print(timeClient.getHours());
      Serial.print(":");
      Serial.print(timeClient.getMinutes());
      Serial.print(":");
      Serial.println(timeClient.getSeconds());
      //Serial.println(timeClient.getFormattedTime());   
             
      seg.displayColon(true);
      delay(500);
      seg.displayTime(timeClient.getHours(), timeClient.getMinutes());
    }

    last = millis();
  }      
}