#include <DS3231.h>
#include <Wire.h>
#include "SSD1306Ascii.h"
#include "SSD1306AsciiWire.h"
#include <Sunrise.h>
#include <BH1750.h>
BH1750 lightMeter;

// 0X3C+SA0 - 0x3C or 0x3D
#define I2C_ADDRESS 0x3C


//light level to switch on if lower
float lighThreshold = 2000.0f;

int pwmPin = 3;     // set output pin for the LED
SSD1306AsciiWire Oled;
DS3231 Clock;
bool h12;
bool PM;
RTClib RTC;
// create a Sunrise object
Sunrise mySunrise(51.481845, 7.216236, 2);//Bochum                             example:Lisbon, Portugal, Europe - Latitude/Longitude and Timezone   38.79/-9.12, 0


void setup() {
//  Clock.setYear(21);
//  Clock.setMonth(3);
//  Clock.setDate(29);
//  Clock.setHour(8);
//  Clock.setMinute(44);
//  Clock.setSecond(30);


  mySunrise.Actual(); //Actual, Civil, Nautical, Astronomical


  // Start the serial port
  Serial.begin(9600);

  // Start the I2C interface
  Wire.begin();

  Wire.setClock(400000L);
  Oled.begin(&Adafruit128x64, I2C_ADDRESS);
  lightMeter.begin();
  pinMode(pwmPin, OUTPUT);
}

String addZeros(unsigned long t)
{
  String retVal = "";
  if (t == 0) {
    retVal = "00";
  }
  else if (t < 10) {
    retVal = "0" + (String)t;
  }
  else {
    retVal = (String)t;
  }
  return retVal;
}

void loop() {
  Oled.setFont(Callibri14);
  Oled.clear();
  float lux = lightMeter.readLightLevel();
  
  DateTime now = RTC.now();  
  int riseMinutes;// t= minutes past midnight of sunrise (6 am would be 360)
  riseMinutes = mySunrise.Rise(now.month(), now.day()); // (month,day) - january=1
  int setMinutes;// t= minutes past midnight of sunrise (6 am would be 360)
  setMinutes = mySunrise.Set(now.month(), now.day()); // (month,day) - january=1

  long hour = Clock.getHour(h12, PM);
  long minute = Clock.getMinute();
  long second = Clock.getSecond();

  int currentTimeMinutes = (hour*60)+minute;

  if (currentTimeMinutes > riseMinutes && currentTimeMinutes < setMinutes)
  {
    if(lux<133)
    {
        analogWrite(pwmPin, (0));   
        Oled.println("light support ON"); 
    }
    else
    {
      analogWrite(pwmPin, (255));
      Oled.println("light support OFF"); 
    }
      
  }
  else
  {
    analogWrite(pwmPin, (255));
    Oled.println("night mode"); 
  }

  String riseTime = String((riseMinutes/60))+":"+String((riseMinutes%60));
  String setTime = String((setMinutes/60))+":"+String((setMinutes%60));
  Oled.println("T: " + addZeros(hour) + ":" + addZeros(minute) + ":" + addZeros(second) +" "+ now.day() + "." + now.month() + "." + now.year());
  Oled.println("Rise:" + riseTime + " - Set:" + setTime);  
  Oled.println("Light: " + String(lux) + " lx");
  delay(1000);
}