MikvaCalculation.java

public void MikvaCalculation(int year, int month, int day){
    Calendar calendar = new GregorianCalendar(year, month, day);
    Calendar diffCal = new GregorianCalendar(year, month, day);
    //get the date of the flow
    mFlow.setSawBlood(calendar.getTime());
    if(mFlow.isBeforeSunset()){//before shkiah...
        day += 4;//add 4 days
        calendar.set(year, month, day);
        mFlow.setHefsekTahara(calendar.getTime());//hefsek tahara
        day += 7;//add 7 days
        calendar.set(year, month, day);
        mFlow.setMikvaNight(calendar.getTime());//mikva night
        day += 18;//add 18 days for day 30
    }else{//after shkiah 
    	day += 5;//plus one more day
        calendar.set(year, month, day);
        mFlow.setHefsekTahara(calendar.getTime());
        day += 7;
        calendar.set(year, month, day);
        mFlow.setMikvaNight(calendar.getTime());
        day += 17;
    }
    //day 30
    calendar.set(year, month, day);
    mFlow.setDay30(calendar.getTime());
    //day 31
    day += 1;
    calendar.set(year, month, day);
    mFlow.setDay31(calendar.getTime());
    int diffInDays = 0;
    if(previousFlow != null){
    	if(previousFlow.getTime() != 0){
        	long diff = mFlow.getSawBlood().getTime() - previousFlow.getTime();
            diffInDays = (int) (diff / (24 * 60 * 60 * 1000));
            diffInDays = figureOutDiff(isPreviousAfterSunset, mFlow.isBeforeSunset(), diffInDays);
            //calculate diff like "32 days since last flow"
            diffCal.add(Calendar.DATE, diffInDays);
            mFlow.setHaflaga(diffCal.getTime());
            diffInDays += 1; // add a day because the day itself counts as a day
            mFlow.setHaflagaDiff(diffInDays);
    	}
    }
    //set the dates in the text views
    sawBloodTV.setText(mFlow.getSawBloodString());
    hefsekTaharaTV.setText(mFlow.getHefsekTaharaString());
    mikvaNightTV.setText(mFlow.getMikvaNightString());
    day30TV.setText(mFlow.getDay30String());
    day31TV.setText(mFlow.getDay31String());
    if(mFlow.getHaflaga() != null){
    	haflagaTV.setText(mFlow.getHaflagaString(diffInDays));
    }
}