package types;

public class BooleanSupport {
  
  interface Operation {
    
    boolean op (boolean op1, boolean op2);
    
  }
      
  interface Formatter {
    
    String format (boolean value);
    
  }

  public static class And implements Operation {
    
    public boolean op (boolean value1, boolean value2) {
      return value1 & value2;
    }
  }
  
  public static class Or implements Operation {
    
    public boolean op (boolean value1, boolean value2) {
      return value1 | value2;
    }
  }
  
  public static class Xor implements Operation {
    
    public boolean op (boolean value1, boolean value2) {
      return value1 ^ value2;
    }
  }
  
  public static class SimpleFormatter implements Formatter {
    
    public String format (boolean value) {
      return value ? "T" : "F";
    }
  }
  
  public static class DefaultFormatter implements Formatter {
    
    public String format (boolean value) {
      return value + "";
    }
  }
  
  public static class Table {
    
    private static final String spaces = "          ";
    private static final String dashes = "----------";
    private Operation operation;
    private Formatter formatter;
    private String title;
    private int size1;
    private int size2;

    public Table (Operation operation, String title, Formatter formatter) {
      this.operation = operation;
      this.formatter = formatter;
      this.title = title;
      int lengthOfTrue = formatter.format (true).length ();
      int lengthOfFalse = formatter.format (false).length ();
      size2 = Math.max (lengthOfTrue, lengthOfFalse) + 2;
      size1 = Math.max (title.length () + 2, size2);
    }
    
    public String toString () {
      return line () 
          + row (title, formatter.format (true), formatter.format (false)) + line ()
          + row (formatter.format (true)
              , formatter.format (operation.op (true, true))
              , formatter.format (operation.op (true, false))) + line ()
          + row (formatter.format (false)
              , formatter.format (operation.op (false, true))
              , formatter.format (operation.op (false, false))) + line () + "\n";
    }

    private String row (String text1, String text2, String text3) {
      return row (text1, text2, text3, spaces, ":");
    }

    private String line () {
      return row ("-", "-", "-", dashes, "+");
    }

    private String row (String text1, String text2, String text3
        , String fillWith, String separator) {
      return format (text1, size1, fillWith)
          + separator + format (text2, size2, fillWith)
          + separator + format (text3, size2, fillWith) + "|\n";
    }
    
    private String format (String text, int size, String fillWith) {
      text += fillWith.substring (0, (size - text.length ()) / 2);
      return fillWith.substring (0, size - text.length ()) + text;
    }

  }
}