package org.lsst.ccs.bootstrap.resources;
   
   import java.io.File;
   import java.util.ArrayList;
   import java.util.List;
   
   /**
    * A Resource Directory.
    * It contains a list of resources.
   * 
   * @author turri
   */
  public class ResourceDirectory {
      
      private File resourceDirectoryFile = null;
      private List<String> resources = new ArrayList<>();
      private String fileSeparator = System.getProperty("file.separator");
      private boolean isDistributionDir = false;
  
      ResourceDirectory(String resourceDirectoryPath, boolean isDistributionDir) {
          resourceDirectoryFile = new File(resourceDirectoryPath);
          this.isDistributionDir = isDistributionDir;
          loadResources(resourceDirectoryFile, fileSeparator);
      }
  
      
      private void loadResources(File parent, String relPath) {
          if (parent.exists() && parent.isDirectory()) {
              String[] listOfResources = parent.list();
              for( String resource : listOfResources ) {
                  
                  File f = new File(parent,resource);
                  if ( f.isDirectory() ) {
                      loadResources(f,relPath+resource+fileSeparator);
                  } else {
                      String resourceName = relPath+resource;
                      if ( resourceName.startsWith(fileSeparator) ) {
                          resourceName = resourceName.substring(1);
                      }
                      resources.add(resourceName);
                  }
              }
          } else {
              throw new IllegalArgumentException("The provided path: "+parent.getAbsolutePath()+" does not exist");
          }
      }
      
      public boolean isDistributionDir() {
          return isDistributionDir;
      }
      
      public boolean hasResource(String resourceName) {
          return resources.contains(resourceName);
      }
      
      public String getResouceDirectoryPath() {
          String resourceDirPath = resourceDirectoryFile.getAbsolutePath();
          if ( ! resourceDirPath.endsWith(fileSeparator) ) {
              resourceDirPath += fileSeparator;
          }
          return resourceDirPath;
      }
  
      public List<String> getResources() {
          return resources;
      }
      
      
  }