package de.test.trafficlightcountdown;

import java.text.DateFormat;
import java.text.NumberFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.concurrent.TimeUnit;

import android.app.Activity;
import android.net.ParseException;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import de.werneritsolutions.trafficlightcountdown.R;

public class TrafficLightCountdownActivity extends Activity
{
  TextView day,hour,min,sec;
  int iDay,iHour,iMin,iSec;
  MyCount counter;
  Date endDate = null;
  Date startDate = null;
  NumberFormat myFormat = NumberFormat.getInstance();

  @Override
  public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    final SimpleDateFormat outputFormat = new SimpleDateFormat("HH:mm:ss");
    day=(TextView)findViewById(R.id.day);
    hour=(TextView)findViewById(R.id.hour);
    min=(TextView)findViewById(R.id.min);
    sec=(TextView)findViewById(R.id.sec);
    myFormat.setMinimumIntegerDigits(2);

    Date now = new Date();
    final String currentDate = outputFormat.format(now);
    String nextDate = null;
    try
    {
      nextDate = eventFinder(now);
    }
    catch (Exception e1)
    {
      e1.printStackTrace();
    }

    Button btnStart=(Button)findViewById(R.id.btnstart);

    btnStart.setOnClickListener(new View.OnClickListener()
    {
      public void onClick(View arg0)
      {
        try
        {
          try
          {
            endDate = outputFormat.parse(nextDate);
          }
          catch (java.text.ParseException e)
          {
            e.printStackTrace();
          }
          try
          {
            startDate=outputFormat.parse(currentDate);
          }
          catch (java.text.ParseException e)
          {
            e.printStackTrace();
          }
          long diffInMis= endDate.getTime() - startDate.getTime();
          if(diffInMis<0)
          {
            Toast.makeText(getBaseContext(), "Please, Enter valid Time...",Toast.LENGTH_SHORT).show();
          }
          else
          {
            long diff = TimeUnit.MILLISECONDS.toSeconds(diffInMis);
            iDay=(int) (diff/(60*60*24));
            long lday= (diff%(60*60*24));
            iHour=(int)(lday/3600);
            long lhour= (lday%(60*60));
            iMin=(int)(lhour/60);
            long lmin= (lhour%(60));
            iSec=(int)(lmin);
            hour.setText(String.valueOf(myFormat.format(iHour)).toString());
            min.setText(":"+String.valueOf(myFormat.format(iMin)).toString());
            sec.setText(":"+String.valueOf(myFormat.format(iSec)).toString());
            counter = new MyCount(iSec*1000,1000);
            counter.start();
          }
        }
        catch (ParseException e)
        {
          e.printStackTrace();
        }
      };
    });

    Button btnStop=(Button)findViewById(R.id.btnstop);
    btnStop.setOnClickListener(new View.OnClickListener()
    {
      public void onClick(View arg0)
      {
        counter.cancel();
        hour.setText("00");
        min.setText(":"+"00");
        sec.setText(":"+"00");
      }
    });
  }

  static public String eventFinder(Date cdt) throws Exception
  {
    Date currentDateTime = cdt;

    String[] eventTimes = {
        "22:15:41",
        "22:23:07",
        "22:30:33",
        "22:37:59",
        "22:45:25",
        "22:52:51",
        "23:00:17",
        "23:07:43",
        "23:15:09",
        "23:24:35",
        "23:30:01",
        "23:37:27",
        "23:44:53"
    };

    boolean foundMatch = false;
    long diff = -1;
    String timeToKnow = null;

    for(int index = 0; index < eventTimes.length; index++)
    {
      diff = getDateDiffMillis(currentDateTime, currentDateTime, eventTimes[index]);

      if(diff > 0)
      {
        foundMatch = true;
        timeToKnow = eventTimes[index];
        break;
      }
    }

    if(!foundMatch)
    {
      Date tomorrowDateTime = new Date(new Date().getTime() + 86400000L); //+24h als Millisekunden
      diff = getDateDiffMillis(currentDateTime, tomorrowDateTime, eventTimes[0]);
      timeToKnow = eventTimes[0];
    }

    System.out.println(timeToKnow);
    return timeToKnow;
  }

  static public long getDateDiffMillis(Date dateTime, Date eventDate, String eventTime) throws Exception
  {
    long diff = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM, Locale.GERMANY).parse(DateFormat.getDateInstance(DateFormat.MEDIUM, Locale.GERMANY).format(eventDate) +" "+ eventTime).getTime() - dateTime.getTime();
    return diff;
  }

  public class MyCount extends CountDownTimer
  {
    public MyCount(long millisInFuture, long countDownInterval)
    {
      super(millisInFuture, countDownInterval);
    }
    @Override
    public void onFinish()
    {
      counter = new MyCount(60000,1000);
      counter.start();
      iMin-=1;
      if(iMin>-1)
      {
        min.setText(":"+String.valueOf(myFormat.format(iMin)).toString());
      }
      else
      {
        iMin=59;
        min.setText(":"+String.valueOf(myFormat.format(iMin)).toString());
        iHour-=1;
        if(iHour>-1)
        {
          hour.setText(String.valueOf(myFormat.format(iHour)).toString());
        }
        else
        {
          iHour=11;
          hour.setText(String.valueOf(myFormat.format(iHour)).toString());
          iDay-=1;
          if(iDay>-1)
          {
            day.setText(" "+String.valueOf(iDay).toString());
          }
          else
          {
            day.setText("Green!");
            hour.setText("");
            min.setText("");
            sec.setText("");
            counter.cancel();
          }
        }
      }
    }

    @Override
    public void onTick(long millisUntilFinished)
    {
      sec.setText(":"+String.valueOf(myFormat.format(millisUntilFinished/1000)));
    }
  }
}