/* File: League.java - March 2011 */
package l08;

/**
 * Illustrate the use of the Comparable interface for Team by simulating
 * a league
 *
 * @author Michael Albert
 *
 */

public class League {

   public static Team[] teams = 
   { new Team("Blues"),
     new Team("Gunners"),
     new Team("Riversiders"),
     new Team("Latics"),
     new Team("Canaries"),
     new Team("Tangerines"),
     new Team("Pool"),
     new Team("Red Devils")
   };

   public static void main(String[] args) {

      Team[] teamsCopy = new Team[teams.length];
      System.arraycopy(teams, 0, teamsCopy, 0, teams.length);

      for(int round = 1; round < teams.length; round++) {
         playRound(round);
         System.out.println();
         java.util.Arrays.sort(teamsCopy);
         for(int k = teamsCopy.length-1; k >= 0; k--) {
            System.out.println(teamsCopy[k]);
         }
         System.out.println();
         System.out.println("---------------------------------");
      }

      System.out.println();
   }

   public static void playRound(int round) {

      System.out.println("Round " + round);

      int[] matches = new int[teams.length];
      int i = 1;
      for(int k = round; k < teams.length; k++) {
         matches[k] = i;
         i++;
      }
      for(int k = 1; k < round; k++) {
         matches[k] = i;
         i++;
      }

      int a = 0;
      int b = teams.length-1;
      while (a < b) {
         play(teams[matches[a]], teams[matches[b]]);
         a++;
         b--;
      }
   }

   public static void play(Team a, Team b) {
      int aGoals = (int) (Math.random()*3.5);
      int bGoals = (int) (Math.random()*3.5);
      a.addResult(aGoals, bGoals);
      b.addResult(bGoals, aGoals);
      System.out.println(a.getName() + " " + aGoals + ", " +
                         b.getName() + " " + bGoals);
   }

}