package pr2;

public class TemperatureHighsAndLows implements TemperatureConstants, Comparable<TemperatureHighsAndLows> {
   
   private int month;
   private int day;
   private int[] highs;
   private int[] lows;

   public TemperatureHighsAndLows(int month, int day) {
      this.month = month;
      this.day = day;
      highs = new int[DATA_SIZE];
      lows = new int[DATA_SIZE];
      for (int i = 0; i < DATA_SIZE; i++) {
         highs[i] = UNKNOWN_TEMP;
         lows[i] = UNKNOWN_TEMP;
      }
   }

   public int getMonth() {
      return month;
   }

   public int getDay() {
      return day;
   }
   
   public int getActualLow() {
      return lows[0];
   }
   
   public int getActualHigh() {
      return highs[0];
   }
   
   public int getPredictedLow(int n) {
      if ((n < 1) || (n >= DATA_SIZE))
         return UNKNOWN_TEMP;
       return lows[n];
   }
   
   public int getPredictedHigh(int n) {
      if ((n < 1) || (n >= DATA_SIZE))
            return UNKNOWN_TEMP;
          return highs[n];
   }

   public void setPredictedLow(int n, int temp) {
      if ((n < 1) || (n >= DATA_SIZE))
         return;
      lows[n] = temp;
   }

   public void setPredictedHigh(int n, int temp) {
      if ((n < 1) || (n >= DATA_SIZE))
         return;
      highs[n] = temp;
   }

   public void setActualLow(int temp) {
      lows[0] = temp;
   }

   public void setActualHigh(int temp) {
      highs[0] = temp;
   }

   private String tempToString(int temp) {
      if (temp == UNKNOWN_TEMP)
         return "??";
      return "" + temp;
   }

   public String toString() {
      StringBuilder sb = new StringBuilder();
      sb.append(MONTHS[month - 1] + " " + day + ": High="
            + tempToString(highs[0]) + " Low=" + tempToString(lows[0])
            + " Predicted highs:");
      for (int i = 1; i < highs.length; i++)
         sb.append(" " + tempToString(highs[i]));
      sb.append(" lows:");
      for (int i = 1; i < lows.length; i++)
         sb.append(" " + tempToString(lows[i]));
      return sb.toString();
   }
   
   public void qualityCheck() {
      int temp;
      for (int i=0;i<highs.length;i++)
         if (highs[i] < lows[i]) {
            temp = highs[i];
            highs[i] = lows[i];
            lows[i] = temp;
         }
            
   }
   
   public static int stringToMonth(String s) {
      for (int i = 0; i < MONTHS.length; i++)
         if (s.equals(MONTHS[i]))
            return i + 1;
      return -1;
   }
   
   // not used in this project
   public void convertToDifferences() {
      if (highs[0] != UNKNOWN_TEMP)
         for (int i=1;i<highs.length;i++)
            if (highs[i] != UNKNOWN_TEMP)
               highs[i] = highs[i] - highs[0];
      if (lows[0] != UNKNOWN_TEMP)
         for (int i=1;i<lows.length;i++)
            if (lows[i] != UNKNOWN_TEMP)
               lows[i] = lows[i] - lows[0];
      
   }
   
   public boolean equals(Object other) {
      if (!(other instanceof TemperatureHighsAndLows))
         return false;
      TemperatureHighsAndLows otherTemp = (TemperatureHighsAndLows)other;
      return month == otherTemp.month && day == otherTemp.day;
   }
   
   public int compareTo(TemperatureHighsAndLows otherTemp) {
      if (otherTemp.month != month)
         return month - otherTemp.month;
      return day - otherTemp.day;
   }


}