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package org.netbeans.modules.visualweb.dataconnectivity.test.utils;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.OutputStream;

import java.util.Arrays;

import java.util.Collections;

import java.util.Enumeration;

import java.util.zip.ZipEntry;

import java.util.zip.ZipInputStream;

import javax.swing.event.ChangeEvent;

import org.netbeans.api.project.Project;

import org.netbeans.api.project.ProjectManager;

import org.netbeans.api.project.ui.OpenProjects;

import org.netbeans.junit.MockServices;

import org.openide.filesystems.FileLock;

import org.openide.filesystems.FileObject;

import org.openide.filesystems.FileUtil;

import org.openide.loaders.DataLoader;

import org.openide.loaders.DataLoaderPool;

import org.openide.util.Lookup;

import org.openide.util.LookupEvent;

import org.openide.util.LookupListener;

/**

 *

 * @author JohnBaker

 */

public class SetupProject {    

    private static String RESOURCEPATH = ".." + System.getProperty("file.separator") + "resources" +  System.getProperty("file.separator");

    public static Project setup(File workDir) throws IOException {

        assert(workDir != null);

        File userDir = new File(workDir, "userdir");

        userDir.mkdir();

        System.getProperties().put("netbeans.user", userDir.getAbsolutePath());   

        System.out.println(userDir.getAbsolutePath());

//        String zipResource = RESOURCEPATH + "VWJavaEE5.zip";

        String zipResource =  "VWJavaEE5.zip";

        System.out.println("resource = " + zipResource);

        String zipPath = SetupProject.class.getResource(zipResource).getPath();

        if (zipPath == null) {

            throw new IOException("Could not load zip resource: " + RESOURCEPATH + zipResource);

        }

        File archiveFile = new File(zipPath);

        FileObject destFileObj = FileUtil.toFileObject(workDir);

        unZipFile(archiveFile, destFileObj);

        if (!destFileObj.isValid()) {

            throw new IOException("FileObject for project directory not valid");

        }

        MockServices.setServices(SetupProject.DefaultPool.class);

        FileObject testApp = destFileObj.getFileObject("VWJavaEE5");

        System.out.println("Children of VWJavaEE5:" + Arrays.toString(testApp.getChildren()));

        Project project = ProjectManager.getDefault().findProject(testApp);

        if (project == null) {

            throw new IOException("Could not load project");

        }

        OpenProjects.getDefault().open(new Project[]{project}, false);

        return project;

    }

    private static void unZipFile(File archiveFile, FileObject destDir) throws IOException {

        FileInputStream fis = new FileInputStream(archiveFile);

        try {

            ZipInputStream str = new ZipInputStream(fis);

            ZipEntry entry;

            while ((entry = str.getNextEntry()) != null) {

                if (entry.isDirectory()) {

                    FileUtil.createFolder(destDir, entry.getName());

                } else {

                    FileObject fo = FileUtil.createData(destDir, entry.getName());

                    FileLock lock = fo.lock();

                    try {

                        OutputStream out = fo.getOutputStream(lock);

                        try {

                            FileUtil.copy(str, out);

                        } finally {

                            out.close();

                        }

                    } finally {

                        lock.releaseLock();

                    }

                }

            }

        } finally {

            fis.close();

        }

    }

 /**

     * Taken from DataLoaderPool.DefaultPool to override NbLoaderPool

     * 

     * Special pool for unit testing etc.

     * Finds all relevant data loaders in default lookup.

     * 

     */

    public static final class DefaultPool extends DataLoaderPool implements LookupListener {

        private final Lookup.Result<DataLoader> result;

        public DefaultPool() {

            result = Lookup.getDefault().lookupResult(DataLoader.class);

            result.addLookupListener(this);

        }

        protected Enumeration<? extends DataLoader> loaders() {

            return Collections.enumeration(result.allInstances());

        }

        public void resultChanged(LookupEvent e) {

            fireChangeEvent(new ChangeEvent(this));

        }

    }

}