/*******************************************************************************
 * Copyright (c) 2000, 2015 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.core.search;

import static org.eclipse.jdt.internal.core.JavaModelManager.trace;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.search.IJavaSearchScope;
import org.eclipse.jdt.core.search.SearchDocument;
import org.eclipse.jdt.core.search.SearchParticipant;
import org.eclipse.jdt.internal.core.search.processing.JobManager;
import org.eclipse.jdt.internal.core.util.Util;

public class JavaSearchDocument extends SearchDocument {

	private IFile file;
	protected byte[] byteContents;
	protected char[] charContents;

	public JavaSearchDocument(String documentPath, SearchParticipant participant) {
		super(documentPath, participant);
	}
	public JavaSearchDocument(java.util.zip.ZipEntry zipEntry, IPath zipFilePath, byte[] contents, SearchParticipant participant) {
		this(zipFilePath + IJavaSearchScope.JAR_FILE_ENTRY_SEPARATOR + zipEntry.getName(), contents, participant);
	}

	public JavaSearchDocument(String documentPath, byte[] contents, SearchParticipant participant) {
		super(documentPath, participant);
		this.byteContents = contents;
	}

	@Override
	public byte[] getByteContents() {
		if (this.byteContents != null) return this.byteContents;
		try {
			return Util.getResourceContentsAsByteArray(getFile());
		} catch (JavaModelException e) {
			if (BasicSearchEngine.VERBOSE || JobManager.VERBOSE) { // used during search and during indexing
				trace("", e); //$NON-NLS-1$
			}
			return null;
		}
	}
	@Override
	public char[] getCharContents() {
		if (this.charContents != null) return this.charContents;
		try {
			return Util.getResourceContentsAsCharArray(getFile());
		} catch (JavaModelException e) {
			if (BasicSearchEngine.VERBOSE || JobManager.VERBOSE) { // used during search and during indexing
				trace("", e); //$NON-NLS-1$
			}
			return null;
		}
	}
	@Override
	public String getEncoding() {
		// Return the encoding of the associated file
		IFile resource = getFile();
		if (resource != null) {
			try {
				return resource.getCharset();
			}
			catch(CoreException ce) {
				try {
					return ResourcesPlugin.getWorkspace().getRoot().getDefaultCharset();
				} catch (CoreException e) {
					// use no encoding
				}
			}
		}
		return null;
	}
	private IFile getFile() {
		if (this.file == null)
			this.file = ResourcesPlugin.getWorkspace().getRoot().getFile(new Path(getPath()));
		return this.file;
	}
	@Override
	public String toString() {
		return "SearchDocument for " + getPath(); //$NON-NLS-1$
	}
}
