package pr2;

import java.util.ArrayList;
import java.util.Collections;

public class TemperaturePredictionList implements TemperatureConstants {

   private ArrayList<TemperaturePrediction> list;

   public TemperaturePredictionList() {
      list = new ArrayList<TemperaturePrediction>();
   }

   public int getSize() {
      return list.size();
   }

   public TemperaturePrediction get(int n) {
      if (n >= list.size())
         return null;
      return list.get(n);
   }

   public void addFromDescriptor(String s) {
      TemperaturePrediction tp = 
         TemperaturePrediction.createFromDescriptor(s);
      if (tp != null)
         list.add(tp);
   }

   public TemperaturePrediction findPrediction(int month, int day) {
      for (int i = 0; i < list.size(); i++)
         if ((list.get(i).getMonth() == month)
               && (list.get(i).getDay() == day))
            return list.get(i);
      return null;
   }

   // s is in the form of an entry from a daily-temperature list
   public void setActualTemperature(String s) {
      int month;
      int day;
      int high;
      int low;
      TemperaturePrediction tp;
      MyStringTokenizer stk = new MyStringTokenizer(s);
      if (stk.countTokens() != 4)
         return;
      try {
         month = TemperatureHighsAndLows.stringToMonth(stk.nextToken());
         if (month == -1)
            return;
         day = Integer.parseInt(stk.nextToken());
         low = Integer.parseInt(stk.nextToken());
         high = Integer.parseInt(stk.nextToken());
      } catch (Exception e) {
         return;
      }
      tp = findPrediction(month, day);
      if (tp == null) {
          tp = new TemperaturePrediction(month,day);
          list.add(tp);
      }
      tp.setActualHigh(high);
      tp.setActualLow(low);
   }
   
   public void qualityCheck() {
      for (int i=0;i<list.size();i++)
         list.get(i).qualityCheck();
   }

   public void print() {
      Collections.sort(list);
      for (int i = 0; i < list.size(); i++)
         System.out.println(list.get(i));
   }

}