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/*
 * Copyright 2014 Guidewire Software, Inc.
 */

package gw.fs.physical.fast;

import gw.fs.physical.IFileMetadata;
import gw.lang.UnstableAPI;

import java.io.File;
import java.util.HashSet;
import java.util.Set;

@UnstableAPI
public class FastFileMetadata implements IFileMetadata {
  private File _file;

  public FastFileMetadata(File file) {
    _file = file;
  }

  @Override
  public String name() {
    return _file.getName();
  }

  @Override
  public long length() {
    return _file.length();
  }

  @Override
  public long lastModifiedTime() {
    return _file.lastModified();
  }

  @Override
  public boolean exists() {
    return _file.exists();
  }

  @Override
  public boolean isFile() {
    return !isDir();
  }

  @Override
  public boolean isDir() {
    String name = _file.getName();
    if (isAssumedFileSuffix(getFileSuffix(name))) {
      return false;
    } else {
      return _file.isDirectory();
    }
  }

  private static String getFileSuffix(String name) {
    int dotIndex = name.lastIndexOf('.');
    if (dotIndex == -1) {
      return null;
    } else {
      return name.substring(dotIndex + 1);
    }
  }

  private static final Set FILE_SUFFIXES;

  static {
    FILE_SUFFIXES = new HashSet();
    FILE_SUFFIXES.add("class");
    FILE_SUFFIXES.add("eti");
    FILE_SUFFIXES.add("etx");
    FILE_SUFFIXES.add("gif");
    FILE_SUFFIXES.add("gr");
    FILE_SUFFIXES.add("grs");
    FILE_SUFFIXES.add("gs");
    FILE_SUFFIXES.add("gst");
    FILE_SUFFIXES.add("gsx");
    FILE_SUFFIXES.add("gti");
    FILE_SUFFIXES.add("gx");
    FILE_SUFFIXES.add("jar");
    FILE_SUFFIXES.add("java");
    FILE_SUFFIXES.add("pcf");
    FILE_SUFFIXES.add("png");
    FILE_SUFFIXES.add("properties");
    FILE_SUFFIXES.add("tti");
    FILE_SUFFIXES.add("ttx");
    FILE_SUFFIXES.add("txt");
    FILE_SUFFIXES.add("wsdl");
    FILE_SUFFIXES.add("xml");
    FILE_SUFFIXES.add("xsd");
  }

  private static boolean isAssumedFileSuffix(String suffix) {
    return FILE_SUFFIXES.contains(suffix);
  }
}