/*
 * Created on 16-Jan-2006
 * Created by Paul Gardner
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

package com.biglybt.ui.swt.views;

import java.net.URL;
import java.util.*;
import java.util.List;

import com.biglybt.ui.swt.mainwindow.Colors;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ScrolledComposite;
import org.eclipse.swt.dnd.*;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.*;

import com.biglybt.core.download.DownloadManager;
import com.biglybt.core.internat.LocaleTorrentUtil;
import com.biglybt.core.internat.MessageText;
import com.biglybt.core.torrent.TOTorrent;
import com.biglybt.core.torrent.TOTorrentAnnounceURLGroup;
import com.biglybt.core.torrent.TOTorrentAnnounceURLSet;
import com.biglybt.core.tracker.client.TRTrackerAnnouncer;
import com.biglybt.core.tracker.client.TRTrackerScraperResponse;
import com.biglybt.core.util.AERunnable;
import com.biglybt.core.util.Debug;
import com.biglybt.pif.download.DownloadTypeComplete;
import com.biglybt.pif.download.DownloadTypeIncomplete;
import com.biglybt.pif.ui.UIPluginViewToolBarListener;
import com.biglybt.pif.ui.tables.TableManager;
import com.biglybt.ui.swt.Messages;
import com.biglybt.ui.swt.TorrentUtil;
import com.biglybt.ui.swt.Utils;
import com.biglybt.ui.swt.components.BufferedLabel;
import com.biglybt.ui.swt.mdi.TabbedEntry;
import com.biglybt.ui.swt.pif.UISWTView;
import com.biglybt.ui.swt.pif.UISWTViewEvent;
import com.biglybt.ui.swt.pifimpl.UISWTViewCoreEventListener;
import com.biglybt.ui.swt.utils.DragDropUtils;
import com.biglybt.ui.swt.views.table.impl.FakeTableCell;

import com.biglybt.ui.common.ToolBarItem;
import com.biglybt.ui.common.table.TableCellCore;
import com.biglybt.ui.common.table.TableColumnCore;
import com.biglybt.ui.common.table.impl.TableColumnManager;
import com.biglybt.ui.selectedcontent.SelectedContent;
import com.biglybt.ui.selectedcontent.SelectedContentManager;
import com.biglybt.util.DataSourceUtils;

public class TorrentInfoView
	implements UISWTViewCoreEventListener, UIPluginViewToolBarListener, DragSourceListener
{
	public static final String MSGID_PREFIX = "TorrentInfoView";

	private DownloadManager			download_manager;

	private Composite 		outer_panel;

	private Font 			headerFont;
	private FakeTableCell[] cells;

	private Composite parent;

	private UISWTView swtView;

	private void
	initialize(
		Composite composite)
	{
		this.parent = composite;

		// cheap trick to allow datasource changes.  Normally we'd just
		// refill the components with new info, but I didn't write this and
		// I don't want to waste my time :) [tux]
		
		Utils.disposeComposite( parent, false );
		

		if (download_manager == null) {
			ViewUtils.setViewRequiresOneDownload(composite);
			return;
		}
		
		Composite panel = Utils.createScrolledComposite( composite );

		GridLayout  layout = new GridLayout();
		layout.marginHeight = 0;
		layout.marginWidth = 0;
		layout.numColumns = 1;
		panel.setLayout(layout);

		//int userMode = COConfigurationManager.getIntParameter("User Mode");

			// header
		
		boolean showHeader = true;
		if (swtView instanceof TabbedEntry) {
			showHeader = ((TabbedEntry) swtView).getMDI().getAllowSubViews();
		}

		if (showHeader) {
			Composite cHeader = new Composite(panel, SWT.BORDER);
			GridLayout configLayout = new GridLayout();
			configLayout.marginHeight = 3;
			configLayout.marginWidth = 0;
			cHeader.setLayout(configLayout);
			GridData gridData = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_CENTER);
			cHeader.setLayoutData(gridData);
	
			Display d = panel.getDisplay();
			cHeader.setBackground(Colors.getSystemColor(d, SWT.COLOR_LIST_SELECTION));
			cHeader.setForeground(Colors.getSystemColor(d, SWT.COLOR_LIST_SELECTION_TEXT));
	
			Label lHeader = new Label(cHeader, SWT.NULL);
			lHeader.setBackground(Colors.getSystemColor(d, SWT.COLOR_LIST_SELECTION));
			lHeader.setForeground(Colors.getSystemColor(d, SWT.COLOR_LIST_SELECTION_TEXT));
			FontData[] fontData = lHeader.getFont().getFontData();
			fontData[0].setStyle(SWT.BOLD);
			int fontHeight = (int)(fontData[0].getHeight() * 1.2);
			fontData[0].setHeight(fontHeight);
			headerFont = new Font(d, fontData);
			lHeader.setFont(headerFont);
			lHeader.setText( " " + MessageText.getString( "authenticator.torrent" ) + " : " + download_manager.getDisplayName().replaceAll("&", "&&"));
			gridData = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_CENTER);
			lHeader.setLayoutData(gridData);
		}

		Composite gTorrentInfo = new Composite(panel, SWT.NULL);
		GridData gridData = new GridData(GridData.VERTICAL_ALIGN_FILL | GridData.HORIZONTAL_ALIGN_FILL);
		gTorrentInfo.setLayoutData(gridData);
		layout = new GridLayout();
		layout.numColumns = 2;
		gTorrentInfo.setLayout(layout);

			// torrent encoding


		Label label = new Label(gTorrentInfo, SWT.NULL);
		gridData = new GridData();
		label.setLayoutData(gridData);
		label.setText( MessageText.getString( "TorrentInfoView.torrent.encoding" ) + ": " );

		TOTorrent	torrent = download_manager.getTorrent();
		BufferedLabel blabel = new BufferedLabel(gTorrentInfo, SWT.NULL);
		gridData = new GridData();
		blabel.setLayoutData(gridData);

		if ( torrent == null ){
			
			blabel.setText("");
			
		}else{
			
			int tt = torrent.getTorrentType();
			
			boolean v1 = tt==TOTorrent.TT_V1 || tt==TOTorrent.TT_V1_V2;
			boolean v2 = tt==TOTorrent.TT_V2 || tt==TOTorrent.TT_V1_V2;
			
			blabel.setText( LocaleTorrentUtil.getCurrentTorrentEncoding( torrent ) + "; V1=" + (v1?"Y":"N") + ", V2=" + (v2?"Y":"N"));
		}
			// trackers

		label = new Label(gTorrentInfo, SWT.NULL);
		gridData = new GridData();
		label.setLayoutData(gridData);
		label.setText( MessageText.getString( "label.tracker" ) + ": " );

		String	trackers = "";

		if ( torrent != null ){

			TOTorrentAnnounceURLGroup group = torrent.getAnnounceURLGroup();

			TOTorrentAnnounceURLSet[]	sets = group.getAnnounceURLSets();

			List<String>	tracker_list = new ArrayList<>();

			URL	url = torrent.getAnnounceURL();

			tracker_list.add( url.getHost() + (url.getPort()==-1?"":(":"+url.getPort())));

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

				TOTorrentAnnounceURLSet	set = sets[i];

				URL[]	urls = set.getAnnounceURLs();

				for (int j=0;j<urls.length;j++){

					url = urls[j];

					String	str = url.getHost() + (url.getPort()==-1?"":(":"+url.getPort()));

					if ( !tracker_list.contains(str )){

						tracker_list.add(str);
					}
				}
			}

			TRTrackerAnnouncer announcer = download_manager.getTrackerClient();

			URL	active_url = null;

			if ( announcer != null ){

				active_url = announcer.getTrackerURL();

			}else{

				TRTrackerScraperResponse scrape = download_manager.getTrackerScrapeResponse();

				if ( scrape != null ){

					active_url = scrape.getURL();
				}
			}

			if ( active_url == null ){

				active_url = torrent.getAnnounceURL();
			}

			trackers = active_url.getHost() + (active_url.getPort()==-1?"":(":"+active_url.getPort()));

			tracker_list.remove( trackers );

			if ( tracker_list.size() > 0 ){

				trackers += " (";

				for (int i=0;i<tracker_list.size();i++){

					trackers += (i==0?"":", ") + tracker_list.get(i);
				}

				trackers += ")";
			}
		}

		blabel = new BufferedLabel(gTorrentInfo, SWT.WRAP);
		blabel.setLayoutData(Utils.getWrappableLabelGridData(1, GridData.FILL_HORIZONTAL));
		blabel.setText( trackers );


			// columns

		Group gColumns = new Group(panel, SWT.NULL);
		Messages.setLanguageText(gColumns, "TorrentInfoView.columns" );
		gridData = new GridData(GridData.FILL_BOTH);
		gColumns.setLayoutData(gridData);
		layout = new GridLayout();
		layout.numColumns = 4;
		gColumns.setLayout(layout);

		Map<String, FakeTableCell>	usable_cols = new HashMap<>();

		TableColumnManager col_man = TableColumnManager.getInstance();

		TableColumnCore[][] cols_sets = {
			col_man.getAllTableColumnCoreAsArray(DownloadTypeIncomplete.class,
					TableManager.TABLE_MYTORRENTS_INCOMPLETE),
			col_man.getAllTableColumnCoreAsArray(DownloadTypeComplete.class,
					TableManager.TABLE_MYTORRENTS_COMPLETE),
		};

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

			TableColumnCore[]	cols = cols_sets[i];

			for (int j=0;j<cols.length;j++){

				TableColumnCore	col = cols[j];

				String id = col.getName();

				if (usable_cols.containsKey(id)) {

					continue;
				}

				FakeTableCell fakeTableCell = null;
				try {
  				fakeTableCell = new FakeTableCell(col, download_manager);
  				fakeTableCell.setOrentation(SWT.LEFT);
  				fakeTableCell.setWrapText(false);
					col.invokeCellAddedListeners(fakeTableCell);
  				// One refresh to see if it throws up
  				fakeTableCell.refresh();
  				usable_cols.put(id, fakeTableCell);
				} catch (Throwable t) {
					//System.out.println("not usable col: " + id + " - " + Debug.getCompressedStackTrace());
					try {
						if (fakeTableCell != null) {
							fakeTableCell.dispose();
						}
					} catch (Throwable t2) {
						//ignore;
					}
				}
			}
		}

		Collection<FakeTableCell> values = usable_cols.values();

		cells = new FakeTableCell[values.size()];

		values.toArray( cells );

		Arrays.sort(
				cells,
				new Comparator<FakeTableCell>()
				{
					@Override
					public int compare(FakeTableCell o1, FakeTableCell o2) {
						TableColumnCore	c1 = (TableColumnCore) o1.getTableColumn();
						TableColumnCore	c2 = (TableColumnCore) o2.getTableColumn();

						String key1 = MessageText.getString(c1.getTitleLanguageKey());
						String key2 = MessageText.getString(c2.getTitleLanguageKey());

						return key1.compareToIgnoreCase(key2);
					}
				});

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

			final FakeTableCell	cell = cells[i];

			label = new Label(gColumns, SWT.NULL);
			gridData = new GridData();
			if ( i%2 == 1 ){
				gridData.horizontalIndent = 16;
			}
			label.setLayoutData(gridData);
			String key = ((TableColumnCore) cell.getTableColumn()).getTitleLanguageKey();
			label.setText(MessageText.getString(key) + ": ");
			Utils.setTT(label,MessageText.getString(key + ".info", ""));
			label.setData("ColumnName", cell.getTableColumn().getName());
			DragSource dragSource = DragDropUtils.createDragSource(label, DND.DROP_MOVE | DND.DROP_COPY);
			dragSource.setTransfer( new Transfer[] { TextTransfer.getInstance() });
			dragSource.addDragListener(this);


			final Composite c = new Composite(gColumns, SWT.DOUBLE_BUFFERED);
			gridData = new GridData( GridData.FILL_HORIZONTAL);
			gridData.heightHint = 16;
			c.setLayoutData(gridData);
			cell.setControl(c);
			cell.invalidate();
			cell.refresh();
			c.addListener(SWT.MouseHover, new Listener() {
				@Override
				public void handleEvent(Event event) {
					Object toolTip = cell.getToolTip();
					if (toolTip instanceof String) {
						String s = (String) toolTip;
						Utils.setTT(c,s);
					}
				}
			});
		}

		refresh();

		composite.layout();
	}

	private void
	refresh()
	{
		if ( cells != null ){

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

				TableCellCore cell = cells[i];
				
				try {
					cell.refresh();
					
					cell.redraw();
					
				}catch (Exception e){
					
					Debug.printStackTrace(e, "Error refreshing cell: " + cells[i].getTableColumn().getName());
				}
			}
		}
	}


	private Composite
	getComposite()
	{
		return outer_panel;
	}

	private String
	getFullTitle()
	{
		return MessageText.getString("TorrentInfoView.title.full");
	}

	private void
	delete()
	{
		if ( headerFont != null ){

			headerFont.dispose();
		}

		if ( cells != null ){

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

				TableCellCore	cell = cells[i];

				cell.dispose();
			}
		}
	}

	private void dataSourceChanged(Object newDataSource) {
		DownloadManager[] dms = DataSourceUtils.getDMs(newDataSource);
		if (dms.length != 1) {
			download_manager = null;
		} else {
			download_manager = dms[0];
		}

		Utils.execSWTThread(new AERunnable() {
			@Override
			public void runSupport() {
				if (parent != null && !parent.isDisposed()) {
					initialize(parent);
				}
			}
		});
	}

	@Override
	public boolean eventOccurred(UISWTViewEvent event) {
    switch (event.getType()) {
      case UISWTViewEvent.TYPE_CREATE:
      	swtView = (UISWTView)event.getData();
      	swtView.setTitle(getFullTitle());
      	swtView.setToolBarListener(this);
        break;

      case UISWTViewEvent.TYPE_DESTROY:
        delete();
        break;

      case UISWTViewEvent.TYPE_INITIALIZE:
        initialize((Composite)event.getData());
        break;

      case UISWTViewEvent.TYPE_LANGUAGEUPDATE:
      	Messages.updateLanguageForControl(getComposite());
      	swtView.setTitle(getFullTitle());
        break;

      case UISWTViewEvent.TYPE_DATASOURCE_CHANGED:
      	dataSourceChanged(event.getData());
        break;

      case UISWTViewEvent.TYPE_FOCUSGAINED:
	      	String id = "DMDetails_Info";
	      	if (download_manager != null) {
	      		if (download_manager.getTorrent() != null) {
	  					id += "." + download_manager.getInternalName();
	      		} else {
	      			id += ":" + download_manager.getSize();
	      		}
						SelectedContentManager.changeCurrentlySelectedContent(id,
								new SelectedContent[] {
									new SelectedContent(download_manager)
						});
					} else {
						SelectedContentManager.changeCurrentlySelectedContent(id, null);
					}
      	break;

      case UISWTViewEvent.TYPE_FOCUSLOST:
    		SelectedContentManager.clearCurrentlySelectedContent();
    		break;

      case UISWTViewEvent.TYPE_REFRESH:
        refresh();
        break;
    }

    return true;
  }

	/* (non-Javadoc)
	 * @see com.biglybt.pif.ui.toolbar.UIToolBarActivationListener#toolBarItemActivated(ToolBarItem, long, java.lang.Object)
	 */
	@Override
	public boolean toolBarItemActivated(ToolBarItem item, long activationType,
	                                    Object datasource) {
		return false; // default handler will handle it
	}

	/* (non-Javadoc)
	 * @see com.biglybt.pif.ui.UIPluginViewToolBarListener#refreshToolBarItems(java.util.Map)
	 */
	@Override
	public void refreshToolBarItems(Map<String, Long> list) {
		Map<String, Long> states = TorrentUtil.calculateToolbarStates(
				SelectedContentManager.getCurrentlySelectedContent(), null);
		list.putAll(states);
	}

	@Override
	public void dragStart(DragSourceEvent event) {
		if (swtView == null || swtView.isContentDisposed()) {
			return;
		}
	}

	@Override
	public void dragSetData(DragSourceEvent event) {
		DragSource dragSource = (DragSource) event.widget;
		Control control = dragSource.getControl();
		event.data = control.getData("ColumnName");
	}

	@Override
	public void dragFinished(DragSourceEvent event) {

	}
}
