package com.atlassian.plugin.util;
   
   import com.atlassian.plugin.util.zip.UrlUnzipper;
   import org.slf4j.Logger;
   import org.slf4j.LoggerFactory;
   
   import java.io.File;
   import java.io.IOException;
   import java.net.URL;
  
  public class FileUtils {
      private static final Logger log = LoggerFactory.getLogger(FileUtils.class);
  
      /**
       * Extract the zip from the URL into the destination directory, but only if the contents haven't already been
       * unzipped. If the directory contains different contents than the zip, the directory is cleaned out
       * and the files are unzipped.
       *
       * @param zipUrl  The zip url
       * @param destDir The destination directory for the zip contents
       */
      public static void conditionallyExtractZipFile(URL zipUrl, File destDir) {
          try {
              UrlUnzipper unzipper = new UrlUnzipper(zipUrl, destDir);
              unzipper.conditionalUnzip();
          } catch (IOException e) {
              log.error("Found {}, but failed to read file", zipUrl, e);
          }
      }
  }