package com.trendmicro.grid.acl.ds.dummy;
   
   import com.trendmicro.grid.acl.ds.FileProvider;
   import com.trendmicro.grid.acl.ds.TagQueryExpression;
   import com.trendmicro.grid.acl.ds.datatypes.SharedFileDetails;
   import com.trendmicro.grid.acl.ds.datatypes.SharedFileInformation;
   import com.trendmicro.grid.acl.l0.datatypes.FileIdentiferListPage;
   import com.trendmicro.grid.acl.l0.datatypes.FileIdentifier;
   import com.trendmicro.grid.acl.l0.datatypes.Range;
  import com.trendmicro.grid.acl.metadata.Meta;
  import com.trendmicro.grid.acl.metadata.Metadata;
  import org.springframework.stereotype.Repository;
  
  import java.util.*;
  
  /**
   * Implements a dummy in-memory provider for files.
   *
   * @author juergen_kellerer, 2010-05-07
   * @version 1.0
   */
  @Repository
  public class DummyFileProvider implements FileProvider {
  
  	Metadata dummyMetadata = new Metadata(Arrays.asList(
  			new Meta("dummyKey1").value("DummyValue1"),
  			new Meta("dummyKey2").value(new Date()),
  			new Meta("dummyKey3").value(354324.34D),
  			new Meta("dummyKey4").value("value1", "value2")));
  
  	FileIdentifier id = new FileIdentifier(new byte[20]);
  	SharedFileInformation dummyFileInformation = new SharedFileInformation(
  			new Date(), new Date(), new Date(), new String[]{"tag1", "tag2"}, 3, 631);
  	SharedFileDetails dummyFileDetails = new SharedFileDetails(id, dummyFileInformation, dummyMetadata);
  
  	@Override
  	public Collection<Boolean> isFilesKnown(Collection<FileIdentifier> files) {
  		return isFilesTaggedWith(files, null);
  	}
  
  	@Override
  	public Collection<Boolean> isFilesTaggedWith(Collection<FileIdentifier> files, String[] tags) {
  		Collection<Boolean> result = new ArrayList<Boolean>();
  		for (FileIdentifier file : files)
  			result.add(id.equals(file));
  		return result;
  	}
  
  	public FileIdentiferListPage getFilesTaggedWith(String[] tags, int pageNumber) {
  		return pageNumber > 0 ? null : new FileIdentiferListPage(0, true);
  	}
  
  	@Override
  	public Collection<FileIdentifier> getCanonicalIdentifiers(Collection<FileIdentifier> files) {
  		return files;
  	}
  
  	@Override
  	public FileIdentiferListPage getMatchingFiles(TagQueryExpression expression, Range range, int pageNumber) {
  		return getFilesTaggedWith(null, pageNumber);
  	}
  
  	@Override
  	public Collection<SharedFileInformation> getFileInformationList(Collection<FileIdentifier> files) {
  		Collection<SharedFileInformation> results = new ArrayList<SharedFileInformation>();
  		results.addAll(Collections.nCopies(files.size(), dummyFileInformation));
  
  		return results;
  	}
  
  	@Override
  	public Collection<SharedFileDetails> getFileDetailsList(Collection<FileIdentifier> files) {
  		Collection<SharedFileDetails> results = new ArrayList<SharedFileDetails>();
  		results.addAll(Collections.nCopies(files.size(), dummyFileDetails));
  
  		return results;
  	}
  }