/*

 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). 

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the License "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description: 

 *

 */

package com.nokia.carbide.cpp.internal.pi.wizards.ui;

import java.io.File;

import java.io.FileFilter;

import java.io.IOException;

import java.text.MessageFormat;

import java.util.ArrayList;

import java.util.List;

import org.eclipse.core.runtime.IPath;

import org.eclipse.core.runtime.Path;

import org.eclipse.jface.viewers.ITableLabelProvider;

import org.eclipse.jface.viewers.LabelProvider;

import org.eclipse.jface.viewers.TableViewer;

import org.eclipse.jface.viewers.Viewer;

import org.eclipse.jface.viewers.ViewerSorter;

import org.eclipse.swt.SWT;

import org.eclipse.swt.graphics.Image;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Group;

import org.eclipse.swt.widgets.Table;

import org.eclipse.swt.widgets.TableColumn;

import org.eclipse.swt.widgets.TableItem;

import com.nokia.carbide.cpp.internal.pi.analyser.StreamFileParser;

import com.nokia.carbide.cpp.internal.pi.plugin.model.ITrace;

import com.nokia.carbide.cpp.internal.pi.utils.PIUtilities;

/**

 * Base group for the profiler data importers

 * 

 */

public abstract class AbstractBaseGroup extends Group {

	abstract class AbstractBaseSorter extends ViewerSorter {

		Table table;

		int column = 0;

		boolean sortAscending;

		public AbstractBaseSorter(Table table, int defaultColumn) {

			this.table = table;

			doSort(defaultColumn);

		}

		public void doSort(int column) {

			sortAscending = !sortAscending;

			// find the TableColumn corresponding to column, and give it a

			// column direction

			TableColumn sortByColumn = table.getColumn(column);

			if (sortByColumn != null) {

				table.setSortColumn(sortByColumn);

				table.setSortDirection(sortAscending ? SWT.UP : SWT.DOWN);

			}

			this.column = column;

		}

		@Override

		abstract public int compare(Viewer viewer, Object e1, Object e2);

	}

	abstract class AbstractLabelProvider extends LabelProvider implements

			ITableLabelProvider {

		public Image getColumnImage(Object element, int columnIndex) {

			return null;

		}

	}

	private List<ProfilerDataPlugins> profilerDataFiles = new ArrayList<ProfilerDataPlugins>();

	protected INewPIWizardSettings wizardSettings;

	/**

	 * Constructor

	 * 

	 * @param parent

	 *            instance of parent Composite

	 * @param wizardSettings

	 *            instance of the INewPIWizardSettings

	 */

	public AbstractBaseGroup(Composite parent,

			INewPIWizardSettings wizardSettings) {

		super(parent, SWT.NONE);

		this.wizardSettings = wizardSettings;

		// set default layout

		this.setLayout(new GridLayout(1, false));

		this.setLayoutData(new GridData(GridData.FILL_BOTH));

		createContent();

	}

	// allow subclassing

	protected void checkSubclass() {

	}

	/**

	 * Implement content for the group

	 */

	protected abstract void createContent();

	protected abstract Table getTable();

	/**

	 * Set this visible and hide given composite

	 * 

	 * @param hideComposite

	 *            to hide

	 */

	public void setVisible(Composite hideComposite) {

		setVisible(true);

		setLocation(hideComposite.getLocation());

		setSize(hideComposite.getSize());

		hideComposite.setVisible(false);

	}

	/**

	 * Add given profile data file into store

	 * 

	 * @param path

	 *            selected profile data file

	 * @throws IllegalArgumentException

	 *             if given file is not valid profile data file

	 */

	public void addProfileDataFile(IPath path) throws IllegalArgumentException {

		boolean exists = false;

		for (ProfilerDataPlugins pdp : profilerDataFiles) {

			if (pdp.getProfilerDataPath().equals(path)) {

				exists = true;

			}

		}

		if (!exists) {

			// check whether selected file a valid profile data file or not

			try {

				File file = path.toFile();

				if (!file.isFile() || file.length() <= 0) {

					throw new IllegalArgumentException();

				}

				new StreamFileParser(file).allTraceType();

				profilerDataFiles.add(new ProfilerDataPlugins(path,

						getPluginsForTraceFile(path)));

			} catch (Exception e) {

				throw new IllegalArgumentException(MessageFormat.format(

						Messages.getString("AbstractBaseGroup.isNotValidProfilerFile"), path //$NON-NLS-1$

								.lastSegment()));

			}

		} else {

			throw new IllegalArgumentException(MessageFormat.format(

					Messages.getString("AbstractBaseGroup.profilerFileIsExisted"), path.lastSegment())); //$NON-NLS-1$

		}

	}

	/**

	 * Add all valid profile data file from given directory's path

	 * 

	 * @param path

	 *            directory

	 * @return

	 */

	public void addDirectory(IPath path) throws IllegalArgumentException {

		if (path != null && path.toFile().isDirectory()) {

			boolean addedValidFile = false;

			try {

				File directory = path.toFile();

				if (!directory.isDirectory()) {

					throw new IllegalArgumentException();

				}

				File[] fileArray = directory.listFiles(new FileFilter() {

					public boolean accept(File file) {

						if (file.isFile()) {

							if (file.getPath().endsWith(".dat")) { //$NON-NLS-1$

								return true;

							}

						}

						return false;

					}

				});

				for (File file : fileArray) {

					try {

						addProfileDataFile(new Path(file.toString()));

						addedValidFile = true;

					} catch (Exception e) {

						// do nothing

					}

				}

			} catch (Exception e) {

				throw new IllegalArgumentException(MessageFormat.format(

						Messages.getString("AbstractBaseGroup.failedToImportFromFolder"), path //$NON-NLS-1$

								.toOSString()));

			}

			if (!addedValidFile) {

				throw new IllegalArgumentException(MessageFormat.format(

						Messages.getString("AbstractBaseGroup.notFoundProfilerDataFiles"), path //$NON-NLS-1$

								.toOSString()));

			}

		}

	}

	/**

	 * Remove selected item form given TableViewer

	 * 

	 * @param tableViewer

	 *            instance of the TableViewer

	 */

	public void removeSelectedItem(TableViewer tableViewer) {

		for (TableItem item : tableViewer.getTable().getSelection()) {

			if (item.getData() instanceof IPath) {

				IPath path = (IPath) item.getData();

				for (ProfilerDataPlugins pdp : profilerDataFiles) {

					if (pdp.getProfilerDataPath().equals(path)) {

						profilerDataFiles.remove(pdp);

						break;

					}

				}

			}

		}

	}

	/**

	 * Remove all item

	 */

	public void removeAll() {

		profilerDataFiles.clear();

	}

	/**

	 * Get list of the ProfilerDataPlugins

	 * 

	 * @return list of the ProfilerDataPlugins

	 */

	public List<ProfilerDataPlugins> getProfilerDataFiles() {

		return profilerDataFiles;

	}

	/**

	 * Get selected item from the table

	 * 

	 * @return instance of the ProfilerDataPlugins if found otherwise null is

	 *         returned

	 */

	public ProfilerDataPlugins getSelectedItem() {

		Table table = getTable();

		if (table.getSelectionCount() == 1) {

			IPath path = (IPath) table.getSelection()[0].getData();

			return getProfilerDataPlugins(path);

		}

		return null;

	}

	/**

	 * Updates given TableViewer so that it contains same data that

	 * ProfilerDataPlugins list.

	 * 

	 * @param tableViewer

	 *            instance of the TableViewer

	 */

	public void refreshTable(TableViewer tableViewer) {

		Table table = tableViewer.getTable();

		List<IPath> pathList = new ArrayList<IPath>();

		for (ProfilerDataPlugins pdp : profilerDataFiles) {

			pathList.add(pdp.getProfilerDataPath());

		}

		tableViewer.setInput(pathList);

		table.setSelection(0);

		tableViewer.refresh();

		wizardSettings.validatePage();

	}

	/**

	 * Get plugins list from given file

	 * 

	 * @param profilerPath profiler data file

	 * @return available plugins list from given file

	 * @throws IOException

	 */

	private List<ITrace> getPluginsForTraceFile(IPath profilerPath)

			throws IOException {

		return PIUtilities.getPluginsForTraceFile(profilerPath.toString());

	}

	/**

	 * Get ProfilerDataPlugins by given profiler data file

	 * 

	 * @param path 

	 * @return instance of the ProfilerDataPlugins if found otherwise null is

	 *         returned

	 */

	private ProfilerDataPlugins getProfilerDataPlugins(IPath path) {

		for (ProfilerDataPlugins pdp : profilerDataFiles) {

			if (pdp.getProfilerDataPath().equals(path)) {

				return pdp;

			}

		}

		return null;

	}

}