/**
 * The be-all end-all of KWIC, as the name implies.
 * 
 * @author Alexander Schaap
 * 
 */
public class MasterControl {
  KWICRecord kr;

  /**
   * Runs this KWIC program.
   * 
   * @return KWIC output
   */
  public String run() {
    // running the program
    kr.input.parse(kr.filename);
    kr.output.print();
    return kr.output.getResult();
  }

  /**
   * Prints human-readable configuration for testing/debug.
   * 
   * @return configuration of modules used in this KWIC instance
   */
  public String config() {
    return "StorageInterface implementation: " + kr.ls.getClass().getName()
        + '\n' + "StorageInterface implementation for shifts: "
        + kr.sls.getClass().getName() + '\n'
        + "StorageInterface implementation for sorted shifts: "
        + kr.ssls.getClass().getName() + '\n'
        + "InputInterface implementation: " + kr.input.getClass().getName()
        + '\n' + "WordCommandInterface implementation: "
        + kr.wc.getClass().getName() + '\n'
        + "CircularShifterInterface implementation: "
        + kr.shift.getClass().getName() + '\n'
        + "AlphabetizerInterface implementation: "
        + kr.alpha.getClass().getName() + '\n'
        + "OutputInterface implementation: " + kr.output.getClass().getName()
        + '\n' + "File: " + kr.filename;
  }

  /**
   * Creates instance of KWIC.
   * 
   * @param kr
   *          record containing all the modules for this KWIC instance
   */
  public MasterControl(KWICRecord kr) {
    this.kr = kr;

    // link things together
    kr.ls.connect(kr.shift);
    kr.sls.connect(kr.alpha);
    //kr.ssls.connect(kr.output);
    kr.input.setWordCommand(kr.wc);
    kr.input.connect(kr.ls);
    kr.shift.connect(kr.sls);
    kr.alpha.connect(kr.ssls);
    kr.output.connect(kr.ssls);
  }

  /**
   * Will parse the first argument as a filename of a file to be parsed.
   * 
   * @param args
   *          either nothing or a number of things starting with a filename;
   *          remaining args are ignored
   */
  public static void main(String[] args) {
    StorageInterface<StorageInterface<WordInterface<?>>> ls = new StorageObservableLinkedList<StorageInterface<WordInterface<?>>>();
    StorageInterface<StorageInterface<StorageInterface<WordInterface<?>>>> sls = new StoragePassthrough<StorageInterface<StorageInterface<WordInterface<?>>>>();
    StorageInterface<StorageInterface<StorageInterface<WordInterface<?>>>> ssls = new StoragePassthrough<StorageInterface<StorageInterface<WordInterface<?>>>>();
    //StorageInterface<StorageInterface<StorageInterface<WordInterface<?>>>> ssls = sls;
    KWICRecord kr = new KWICRecord(ls, sls, ssls, new Input<>(),
        new WordCommandString(), new CircularShifter(),
        new AlphabetizerQuickSort<>(), new Output(), args[0]);
    MasterControl kwic = new MasterControl(kr);
    kwic.run();
  }
}