AndroidTest.java

private void calculateRoomsRequired(int adults, int children, int infants) {
        int counter = 0;

        if(adults + children + infants == 0) {
            showError("we need atleast a pax to proceed");
            return;
        }

        if(adults + children + infants > MAX_HEADCOUNT) {
            showError("Booking exceeds maximum guests");
            return;
        }

        if(adults + children > 7){
            showError("Booking exceeds maximum adult + children");
            return;
        }

        if(children > MAX_ROOMS_PER_BOOKKING * MAX_CHILDREN){
            showError("Sorry, booking exceeds maximum  children");
            return;
        }

        if(infants > MAX_ROOMS_PER_BOOKKING * MAX_INFANTS){
            showError("Sorry, booking exceeds maximum  infants");
            return;
        }




        if(infants + children > 1 && adults ==0){
            showError("Sorry, we need atleast an adult for supervision");
            return;
        }

        List<Integer> roomDistribution = new ArrayList<>();




        float roomsNeeded = children<=3 ? 1 : children/(float) MAX_CHILDREN;
        if(roomsNeeded % 1 != 0){
            roomsNeeded++;
        }

        for(int i = 0; i < (int) roomsNeeded ; i++){
            roomDistribution.add(0);
        }


        while (children > 0){
            if(counter>=roomDistribution.size()){
                counter=0;
            }
            roomDistribution.set(counter, roomDistribution.get(counter)+1);
            counter++;
            children--;
        }


        roomsNeeded = infants<=3 ? 1 : infants/(float) MAX_INFANTS;
        if(roomsNeeded % 1 != 0){
            roomsNeeded++;
        }


        if(roomDistribution.size() < (int) roomsNeeded){
            int diff = (int)roomsNeeded - roomDistribution.size();
            for(int i = 0; i < diff ; i++){
                roomDistribution.add(0);
            }
        }


        counter=0;
        while (infants > 0){
            if(counter>=roomDistribution.size()){
                counter=0;
            }
            roomDistribution.set(counter, roomDistribution.get(counter)+1);
            counter++;
            infants--;
        }


        if(roomDistribution.size() > adults){
            showError("Sorry, we need more adults as we can't let the kids alone in rooms");
            return;
        }


        if(roomDistribution.size() < MAX_ROOMS_PER_BOOKKING){
            float adultPerRooms = adults/(float) MAX_ADULTS;
                if(adultPerRooms % 1 != 0){
                    adultPerRooms++;
                }
                int diff =  (int) adultPerRooms - roomDistribution.size();
                for(int i = 0; i< diff ;i++){
                    roomDistribution.add(0);
                }
        }



        counter = 0;
        while (adults>0){
            if(counter>=roomDistribution.size()){
                counter = 0;
            }
            roomDistribution.set(counter,roomDistribution.get(counter) + 1);
            adults--;
            counter++;
        }


        for(int i = 0; i<roomDistribution.size(); i++){
            lblRooms.get(i).setBackground(getResources().getDrawable(roomBgs[i]));
            lblRooms.get(i).setText(""+roomDistribution.get(i));
        }
    }