package com.nokia.cdt.debug.cw.symbian.tests;

import java.io.File;

import java.io.FilenameFilter;

import java.io.IOException;

import java.net.URL;

import junit.framework.TestCase;

import org.eclipse.core.runtime.FileLocator;

import org.eclipse.core.runtime.Path;

import org.eclipse.core.runtime.Platform;

import org.eclipse.core.runtime.Plugin;

import org.osgi.framework.Bundle;

import org.osgi.framework.BundleContext;

/**

 * The activator class controls the plug-in life cycle

 */

public class TestsPlugin extends Plugin {

	// The plug-in ID

	public static final String PLUGIN_ID = "com.nokia.cdt.debug.cw.symbian.tests";

	// The shared instance

	private static TestsPlugin plugin;

	/**

	 * The constructor

	 */

	public TestsPlugin() {

	}

	/*

	 * (non-Javadoc)

	 * @see org.eclipse.core.runtime.Plugins#start(org.osgi.framework.BundleContext)

	 */

	public void start(BundleContext context) throws Exception {

		super.start(context);

		plugin = this;

	}

	/*

	 * (non-Javadoc)

	 * @see org.eclipse.core.runtime.Plugin#stop(org.osgi.framework.BundleContext)

	 */

	public void stop(BundleContext context) throws Exception {

		plugin = null;

		super.stop(context);

	}

	/**

	 * Returns the shared instance

	 *

	 * @return the shared instance

	 */

	public static TestsPlugin getDefault() {

		return plugin;

	}

	/************* Utility methods **********************/

	public static String[] getFileNamesInFolder(final String folderName, final String fileExtention) {

		File folder = new File(folderName);

		String[] files = folder.list(new FilenameFilter() {

			public boolean accept(File dir, String name) {

				return name.endsWith(fileExtention);

			}

		});

		return files;

	}

	public static String[] getFileFullNamesInFolder(final String folderName, final String fileExtention) {

		String[] files = getFileNamesInFolder(folderName, fileExtention);

		for (int i=0; i < files.length; i++) {

			files[i] = folderName + "\\" + files[i];

		}

		return files;

	}

	/**

	 * Get location of this plugin.

	 * 

	 * @return

	 * @throws IOException

	 */

    public static String getPluginPath() throws IOException {

        if (!Platform.isRunning()) {

            // get file relative to CWD (i.e. this project)

            File f = new File(".");

            f = f.getCanonicalFile();

            return f.getAbsolutePath();

        } else {

        	if (getDefault() == null)

				return null;

			Bundle bundle = getDefault().getBundle();

			if (bundle == null)

				return null;

			URL url = FileLocator.find(bundle, new Path("."), null);

			if (url == null)

				TestCase.fail("could not find URL for bundle: " + bundle);

			url = FileLocator.resolve(url);

			TestCase.assertEquals("file", url.getProtocol());

			return url.getPath();

        }

    }

	 /**

		 * Load a file relative to this plugin in the running workbench

		 * 

		 * @param file

		 * @return File

		 * @throws IOException

		 */

    public static File pluginRelativeFile(String fileName) throws IOException {

        String bundlePath = getPluginPath();

        if (bundlePath == null)

        	return null;

        return new File(bundlePath, fileName);

    }

    /**

     *  Find a file relative to the project.  Works if running

     *  in the workbench or standalone.

     *  @param file the relative path (from the project) to the file

     *  @return File

     */

    public static File projectRelativeFile(String file) throws Exception {

        File f;

        if (!Platform.isRunning()) {

            // get file relative to CWD (i.e. this project)

            f = new File(file);

            f = f.getCanonicalFile();

        } else {

            // get file relative to running plugin (still this project)

            f = pluginRelativeFile(file);

        }

        if (f == null)

            TestCase.fail("Cannot find file " + file + " relative to project");

        return f;

    }

}