/*
 * Copyright (C) 2011 Geometer Plus <contact@geometerplus.com>
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

package org.geometerplus.fbreader.formats;

import org.geometerplus.fbreader.bookmodel.BookModel;
import org.geometerplus.fbreader.library.Book;
import org.geometerplus.zlibrary.core.filesystem.ZLFile;
import org.geometerplus.zlibrary.core.image.ZLFileImage;
import org.geometerplus.zlibrary.core.image.ZLImage;
import org.geometerplus.zlibrary.core.image.ZLImageProxy;
import org.geometerplus.zlibrary.core.image.ZLSingleImage;
import org.geometerplus.zlibrary.core.util.MimeType;

final class NativeFormatPluginException extends RuntimeException {
	private static final long serialVersionUID = 8641852378027454752L;

	public NativeFormatPluginException(String message) {
		super(message);
	}
}

public class NativeFormatPlugin extends FormatPlugin {

	// Stores native C++ pointer value
	// No free method because all plugins' instances are freed by 
	//   PluginCollection::deleteInstance method (C++)
	protected final long myNativePointer;

	public NativeFormatPlugin(long ptr) {
		myNativePointer = ptr;
	}


	private static Object ourCoversLock = new Object();

	@Override
	public native boolean acceptsFile(ZLFile file);

	@Override
	public native boolean readMetaInfo(Book book);

	@Override
	public native boolean readModel(BookModel model);

	@Override
	public ZLImage readCover(final ZLFile file) {
		return new ZLImageProxy() {

			@Override
			public int sourceType() {
				return SourceType.DISK;
			}

			@Override
			public String getId() {
				return file.getPath();
			}

			@Override
			public ZLSingleImage getRealImage() {
				// Synchronized block is needed because of use of temporary storage files;
				synchronized (ourCoversLock) {
					return (ZLSingleImage) readCoverInternal(file);
				}
			}
		};
	}

	protected native ZLImage readCoverInternal(ZLFile file);

	public static ZLImage createImage(String mimeType, String fileName, int offset, int length) {
		return new ZLFileImage(MimeType.get(mimeType), ZLFile.createFileByPath(fileName), offset, length);
	}

	// FIXME: temporary implementation; implement as a native code
	@Override
	public String readAnnotation(ZLFile file) {
		FormatPlugin plugin = PluginCollection.Instance().getJavaPlugin(file);
		if (plugin != null) {
			return plugin.readAnnotation(file);
		}
		return null;
	}
}