/*
 *     FileUtilAcceptance.java  September 13, 2002
 *
 *     Hirornori Washizaki (washi@fuka.info.waseda.ac.jp)
 */

import joint.FileUtil;

import java.io.File;
import java.util.ArrayList;

public class FileUtilAcceptance {
  
  private static final String SEP = File.separator;
  private static File[] candidates = {
    new File("child" + SEP + "child1.xxx"), 
    new File("child" + SEP + "child2.xxx"), 
    new File("child" + SEP + "child3.yyy"),
    new File("child" + SEP + "grand" + SEP + "grand1.xxx"), 
    new File("child" + SEP + "grand" + SEP + "grand2.yyy"), 
    new File("child" + SEP + "grand" + SEP + "grand3.yyy"), 
  };
  
  public static void main(String[] args) throws Exception {
    FileUtil fileUtil = new FileUtil();
    init();
    
    /**
     * scenario_1
     *
     * (expected results)
     * ---- scenario_1: child/* (start) -----
     * /home/washi/work/java/myprojects/joint/child/child1.xxx
     * /home/washi/work/java/myprojects/joint/child/child2.xxx
     * /home/washi/work/java/myprojects/joint/child/child3.yyy
     * ---- scenario_1: child/* (end) -----
     */
    executeScenario(fileUtil, false, "child" + SEP + "*", 
          "scenario_1: child/*", 
          new File[] { candidates[0], candidates[1], candidates[2]});

    /**
     * scenario_2
     *
     * (expected results)
     * ---- scenario_2: child/../child/grand/* (start) -----
     * /home/washi/work/java/myprojects/joint/child/grand/grand1.xxx
     * /home/washi/work/java/myprojects/joint/child/grand/grand2.yyy
     * /home/washi/work/java/myprojects/joint/child/grand/grand3.yyy
     * ---- scenario_2: child/../child/grand/* (end) -----
     */
    executeScenario(fileUtil, false, 
              "child" + SEP + ".." + SEP + "child" + SEP + "grand" 
              + SEP + "*", "scenario_2: child/../child/grand/*", 
              new File[] { candidates[3], candidates[4], candidates[5]});

    /**
     * scenario_3
     *
     * (expected results)
     * ---- scenario_3: child/*.yyy (start) -----
     * /home/washi/work/java/myprojects/joint/child/child3.yyy
     * ---- scenario_3: child/*.yyy (end) -----
     */
    executeScenario(fileUtil, false, "child" + SEP + "*.yyy", 
                    "scenario_3: child/*.yyy", 
                    new File[] { candidates[2] });
    
    /**
     * scenario_4
     *
     * (expected results)
     * ---- scenario_4 child/*.yyy expanded (start) -----
     * /home/washi/work/java/myprojects/joint/child/grand/grand2.yyy
     * /home/washi/work/java/myprojects/joint/child/grand/grand3.yyy
     * /home/washi/work/java/myprojects/joint/child/child3.yyy
     * ---- scenario_4 child/*.yyy expanded (end) -----
     */
    executeScenario(fileUtil, true, "child" + SEP + "*.yyy", 
              "scenario_4: child/*.yyy expanded", 
              new File[] { candidates[2], candidates[4], candidates[5]});
    
    return;
  }
  
  private static void executeScenario(FileUtil fileUtil, boolean expand, 
                                      String statement, String title, 
                                      File[] expects) throws Exception {
    fileUtil.setExpand(expand);
    fileUtil.setStatement(statement);
    File[] results = fileUtil.getFiles();
    if(!compareFiles(expects, results)) {
      throw new Exception("Failed " + title);
    }
    printFiles(title, results);
  }
  
  private static boolean compareFiles(File[] first, File[] second) 
                                                throws Exception {
    ArrayList diffList = new ArrayList();
    if(first == second) return true;
    if(first == null || second == null 
       || first.length != second.length) {
      return false;
    }
    for(int i = 0; i < first.length; i++) {
      diffList.add(first[i].getCanonicalPath());
    }
    for(int i = 0; i < second.length; i++) {
      diffList.remove(second[i].getCanonicalPath());
    }
    return (diffList.size() == 0) ? true : false;
  }

  private static void init() throws Exception {
    File childDirectory = new File("child");
    File grandDirectory = new File("child" + SEP + "grand");
    childDirectory.mkdir();
    grandDirectory.mkdir();
    for(int i = 0; i < candidates.length; i++) {
      candidates[i].createNewFile();
    }
  }
  
  private static void printFiles(String title, File[] files) 
                                           throws Exception {
    p("---- " + title + " (start) -----");
    for(int i = 0; i < files.length; i++) {
      p(files[i].getCanonicalPath());
    }
    p("---- " + title + " (end) -----");
  }
  
  private static final void p(String text) {
    System.out.println(text);
  }
  
}