package org.openslx.dozmod.gui.window;

import java.util.List;

import org.apache.log4j.Logger;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.wizard.WizardDialog;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.openslx.bwlp.thrift.iface.LectureSummary;
import org.openslx.dozmod.gui.MainWindow;
import org.openslx.dozmod.gui.helper.LectureListComparator;
import org.openslx.dozmod.gui.helper.LectureListFilter;
import org.openslx.dozmod.gui.helper.TableHelper;
import org.openslx.dozmod.gui.window.layout.LectureListWindowLayout;
import org.openslx.dozmod.gui.wizard.LectureWizard;
import org.openslx.dozmod.thrift.LectureCache;
import org.openslx.dozmod.thrift.UserCache;
import org.openslx.dozmod.util.FormatHelper;

public class LectureListWindow extends LectureListWindowLayout {

	private final static Logger LOGGER = Logger.getLogger(LectureListWindow.class);

	public final LectureListWindow me = this;

	public LectureListWindow(final Shell mainShell) {
		super(mainShell);

		// Comparator for column sorting
		LectureListComparator comparator = new LectureListComparator();
		tableViewer.setComparator(comparator);
		// creating the columns with sorting functionality through comparator
		TableHelper.createLectureTableColumns(tableViewer);

		// filter the objects in the table depending on the search field
		searchTextField.addKeyListener(new KeyAdapter() {
			public void keyReleased(KeyEvent ke) {
				filter.setSearchText(searchTextField.getText());
				tableViewer.refresh();
			}
		});

		// apply object filtering
		filter = new LectureListFilter();
		tableViewer.addFilter(filter);

		// the listeners to set the detailed info of the selected lecture
		tableViewer.addSelectionChangedListener(new ISelectionChangedListener() {
			@Override
			public void selectionChanged(SelectionChangedEvent event) {
				IStructuredSelection selection = (IStructuredSelection) tableViewer.getSelection();
				LectureSummary lecture = (LectureSummary) selection.getFirstElement();
				if (lecture == null)
					return;
				// Fill detail information fields
				// Lecture name
				setFieldText(lectureName, lecture.getLectureName());
				// id of the lecture
				setFieldText(idInfo, lecture.getLectureId());
				// id of the image linked to the lecture
				setFieldText(imageBaseId, lecture.getImageBaseId());
				// the owner of the selected lecture
				setFieldText(ownerInfo, FormatHelper.userName(UserCache.find(lecture.getOwnerId())));
				// set the time, the lecture has last been used
				lastusedInfo.setText(FormatHelper.longDate(lecture.getLastUsed()));
				// set the start time of the lecture
				startTime.setText(FormatHelper.longDate(lecture.getStartTime()));
				// set the end time of the lecture
				endTime.setText(FormatHelper.longDate(lecture.getEndTime()));
			}

			private void setFieldText(Text control, String content) {
				if (content == null) {
					control.setText("<null>");
				} else {
					control.setText(content);
				}
			}
		});

		newButton.addSelectionListener(new SelectionAdapter() {
			@Override
			public void widgetSelected(SelectionEvent e) {
				new WizardDialog(mainShell, new LectureWizard(false)).open();
			}
		});

		editButton.addSelectionListener(new SelectionAdapter() {
			@Override
			public void widgetSelected(SelectionEvent e) {

			}
		});

		// delete lecture
		deleteButton.addSelectionListener(new SelectionAdapter() {
		});

		// return to mainMenu
		backButton.addSelectionListener(new SelectionAdapter() {
			@Override
			public void widgetSelected(SelectionEvent e) {
				MainWindow.showPage(MainMenuWindow.class);
			}
		});
	}

	private boolean refreshList() {
		List<LectureSummary> lectureList = LectureCache.get(false);
		tableViewer.setInput(lectureList);
		tableViewer.refresh();
		return true;
	}

	@Override
	public boolean hide() {
		return true;
	}

	@Override
	public void show() {
		refreshList();
	}

}