package org.argeo.app.swt.docbook;

import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;
import java.util.Map;

import org.argeo.api.acr.Content;
import org.argeo.api.acr.spi.ProvidedContent;
import org.argeo.app.docbook.DbkAcrUtils;
import org.argeo.app.docbook.DbkAttr;
import org.argeo.app.docbook.DbkType;
import org.argeo.cms.swt.CmsSwtUtils;
import org.argeo.cms.swt.Selected;
import org.argeo.cms.swt.acr.SwtSection;
import org.argeo.cms.swt.acr.SwtSectionPart;
import org.argeo.cms.swt.widgets.StyledControl;
import org.argeo.cms.ux.acr.ContentPart;
import org.argeo.util.naming.NamingUtils;
import org.eclipse.swt.SWT;
import org.eclipse.swt.browser.Browser;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Text;

public class DbkVideo extends StyledControl implements SwtSectionPart, ContentPart {
	private static final long serialVersionUID = -8753232181570351880L;
	private SwtSection section;

	private int width = 640;
	private int height = 360;

	private boolean editable;

	public DbkVideo(Composite parent, int style, Content node) {
		this(SwtSection.findSection(parent), parent, style, node);
	}

	DbkVideo(SwtSection section, Composite parent, int style, Content node) {
		super(parent, style);
		editable = !(SWT.READ_ONLY == (style & SWT.READ_ONLY));
		this.section = section;
		setStyle(DbkType.videoobject.name());
		setData(node);
	}

	@Override
	protected Control createControl(Composite box, String style) {
		Content mediaobject = getNode();
		Composite wrapper = new Composite(box, SWT.NONE);
		wrapper.setLayout(CmsSwtUtils.noSpaceGridLayout());

		Composite browserC = new Composite(wrapper, SWT.NONE);
		browserC.setLayout(CmsSwtUtils.noSpaceGridLayout());
		GridData gd = new GridData(SWT.CENTER, SWT.FILL, true, true);
		gd.widthHint = getWidth();
		gd.heightHint = getHeight();
		browserC.setLayoutData(gd);
//		wrapper.setLayoutData(CmsUiUtils.fillAll());
		Browser browser = new Browser(browserC, SWT.NONE);

		if (editable) {
			Composite editor = new Composite(wrapper, SWT.BORDER);
			editor.setLayout(new GridLayout(3, false));
			editor.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
			String fileref = DbkAcrUtils.getMediaFileref(mediaobject);
			Text text = new Text(editor, SWT.SINGLE);
			if (fileref != null)
				text.setText(fileref);
			else
				text.setMessage("Embed URL of the video");
			text.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
			Button updateB = new Button(editor, SWT.FLAT);
			updateB.setText("Update");
			updateB.addSelectionListener(new Selected() {

				@Override
				public void widgetSelected(SelectionEvent e) {
					Content videodata = mediaobject.child(DbkType.videoobject).child(DbkType.videodata);
					String txt = text.getText();
					URI uri;
					try {
						uri = new URI(txt);
					} catch (URISyntaxException e1) {
						text.setText("");
						text.setMessage("Invalid URL");
						return;
					}

					// Transform watch URL in embed
					// YouTube
					String videoId = null;
					if ("www.youtube.com".equals(uri.getHost()) || "youtube.com".equals(uri.getHost())
							|| "youtu.be".equals(uri.getHost())) {
						if ("www.youtube.com".equals(uri.getHost()) || "youtube.com".equals(uri.getHost())) {
							if ("/watch".equals(uri.getPath())) {
								Map<String, List<String>> map = NamingUtils.queryToMap(uri);
								videoId = map.get("v").get(0);
							}
						} else if ("youtu.be".equals(uri.getHost())) {
							videoId = uri.getPath().substring(1);
						}
						if (videoId != null) {
							try {
								uri = new URI("https://www.youtube.com/embed/" + videoId);
								text.setText(uri.toString());
							} catch (URISyntaxException e1) {
								throw new IllegalStateException(e1);
							}
						}
					}

					// Vimeo
					if ("vimeo.com".equals(uri.getHost())) {
						videoId = uri.getPath().substring(1);
						if (videoId != null) {
							try {
								uri = new URI("https://player.vimeo.com/video/" + videoId);
								text.setText(uri.toString());
							} catch (URISyntaxException e1) {
								throw new IllegalStateException(e1);
							}
						}
					}

					videodata.put(DbkAttr.fileref, uri.toString());
					// TODO better integrate it in the edition lifecycle
//					videodata.getSession().save();
					load(browser);

				}
			});

			Button deleteB = new Button(editor, SWT.FLAT);
			deleteB.setText("Delete");
			deleteB.addSelectionListener(new Selected() {

				@Override
				public void widgetSelected(SelectionEvent e) {
					mediaobject.remove();
//					mediaobject.getSession().save();
					dispose();
					getSection().getParent().layout(true, true);

				}
			});
		}

		// TODO caption
		return browser;
	}

	public void load(Control control) {
		if (control instanceof Browser) {
			Browser browser = (Browser) control;
//			getNode().getSession();
			String fileref = DbkAcrUtils.getMediaFileref(getContent());
			if (fileref != null) {
				// TODO manage self-hosted videos
				// TODO for YouTube videos, check whether the URL starts with
				// https://www.youtube.com/embed/ and not https://www.youtube.com/watch?v=
				StringBuilder html = new StringBuilder();
				html.append(
						"<iframe frameborder=\"0\" allow=\"autoplay; fullscreen; picture-in-picture\" allowfullscreen=\"true\"");
				// TODO make size configurable
				html.append("width=\"").append(width).append("\" height=\"").append(height).append("\" ");
				html.append("src=\"").append(fileref).append("\" ");
				html.append("/>");
				browser.setText(html.toString());
			}
		}
	}

	@Override
	protected void setContainerLayoutData(Composite composite) {
		composite.setLayoutData(new GridData(SWT.CENTER, SWT.FILL, true, true));
	}

	@Override
	protected void setControlLayoutData(Control control) {
		control.setLayoutData(CmsSwtUtils.fillAll());
	}

	@Override
	public Content getContent() {
		return (Content) getData();
	}

	@Override
	public String getPartId() {
		return ((ProvidedContent) getContent()).getSessionLocalId();
	}

	@Override
	public SwtSection getSection() {
		return section;
	}

	public int getWidth() {
		return width;
	}

	public int getHeight() {
		return height;
	}

}