// This file was generated by Mendix Business Modeler.
//
// WARNING: Only the following code will be retained when actions are regenerated:
// - the import list
// - the code between BEGIN USER CODE and END USER CODE
// - the code between BEGIN EXTRA CODE and END EXTRA CODE
// Other code you write will be lost the next time you deploy the project.
// Special characters, e.g., é, ö, à, etc. are supported in comments.

package hourregistration.actions;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
import org.apache.commons.io.IOUtils;
import system.proxies.FileDocument;
import com.mendix.core.Core;
import com.mendix.systemwideinterfaces.core.IContext;
import com.mendix.webui.CustomJavaAction;
import com.mendix.systemwideinterfaces.core.IMendixObject;

/**
 *
 */
public class Java_ZipDocuments extends CustomJavaAction<IMendixObject>
{
	private java.util.List<IMendixObject> __ListOfDocuments;
	private java.util.List<system.proxies.FileDocument> ListOfDocuments;
	private String NameOfZip;

	public Java_ZipDocuments(IContext context, java.util.List<IMendixObject> ListOfDocuments, String NameOfZip)
	{
		super(context);
		this.__ListOfDocuments = ListOfDocuments;
		this.NameOfZip = NameOfZip;
	}

	@Override
	public IMendixObject executeAction() throws Exception
	{
		this.ListOfDocuments = new java.util.ArrayList<system.proxies.FileDocument>();
		if (__ListOfDocuments != null)
			for (IMendixObject __ListOfDocumentsElement : __ListOfDocuments)
				this.ListOfDocuments.add(system.proxies.FileDocument.initialize(getContext(), __ListOfDocumentsElement));

		// BEGIN USER CODE



		if(NameOfZip == null || NameOfZip ==""){
			throw new Exception("Filename not defined.");
		}

	    IMendixObject newFileDocument = Core.instantiate(getContext(), "System.FileDocument");
	    zipFileDocuments(newFileDocument, this.ListOfDocuments, getContext());
	    return newFileDocument;
		// END USER CODE
	}

	/**
	 * Returns a string representation of this action
	 */
	@Override
	public String toString()
	{
		return "Java_ZipDocuments";
	}

	// BEGIN EXTRA CODE
	private void zipFileDocuments(IMendixObject destinationZipFile, List<system.proxies.FileDocument> filesToZip, IContext context)
			throws IOException {
			    File tempFile = File.createTempFile("BulkZipFileDocument"+System.currentTimeMillis(), "tmp");
			    ZipOutputStream zipfile = new ZipOutputStream(new FileOutputStream(tempFile));
			    int i = 1;
			    for (FileDocument file : filesToZip) {
			    	file.setName(context, i + file.getName());
			    	i++;
			        InputStream fileInputStream = Core.getFileDocumentContent(context, file.getMendixObject());
			        zipfile.putNextEntry(new ZipEntry(file.getName()));
			        IOUtils.copy(fileInputStream, zipfile);
			        fileInputStream.close();
			    }
			    zipfile.close();
			    InputStream zipInputStream = new FileInputStream(tempFile);
			    Core.storeFileDocumentContent(context, destinationZipFile, NameOfZip, zipInputStream);
			    tempFile.delete();
			}
	// END EXTRA CODE
}