Copyright (c) 2000, 2011 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
/*******************************************************************************
 * Copyright (c) 2000, 2011 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.corext.refactoring;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import org.eclipse.core.runtime.Assert;

import org.eclipse.core.resources.IResource;

import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.search.SearchMatch;

import org.eclipse.jdt.internal.corext.util.SearchUtils;

public class SearchResultGroup {

	private final IResource fResouce;
	private final List<SearchMatch> fSearchMatches;

	public SearchResultGroup(IResource res, SearchMatch[] matches){
		Assert.isNotNull(matches);
		fResouce= res;
		fSearchMatches= new ArrayList<>(Arrays.asList(matches));
	}

	public void add(SearchMatch match) {
		Assert.isNotNull(match);
		fSearchMatches.add(match);
	}

	public IResource getResource() {
		return fResouce;
	}

	public SearchMatch[] getSearchResults() {
		return fSearchMatches.toArray(new SearchMatch[fSearchMatches.size()]);
	}

	public static IResource[] getResources(SearchResultGroup[] searchResultGroups){
		Set<IResource> resourceSet= new HashSet<>(searchResultGroups.length);
		for (int i= 0; i < searchResultGroups.length; i++) {
			resourceSet.add(searchResultGroups[i].getResource());
		}
		return resourceSet.toArray(new IResource[resourceSet.size()]);
	}

	public ICompilationUnit getCompilationUnit(){
		if (getSearchResults() == null || getSearchResults().length == 0)
			return null;
		return SearchUtils.getCompilationUnit(getSearchResults()[0]);
	}

	@Override
	public String toString() {
		StringBuilder buf= new StringBuilder(fResouce.getFullPath().toString());
		buf.append('\n');
		for (int i= 0; i < fSearchMatches.size(); i++) {
			SearchMatch match= fSearchMatches.get(i);
			buf.append("  ").append(match.getOffset()).append(", ").append(match.getLength()); //$NON-NLS-1$//$NON-NLS-2$
			buf.append(match.getAccuracy() == SearchMatch.A_ACCURATE ? "; acc" : "; inacc"); //$NON-NLS-1$//$NON-NLS-2$
			if (match.isInsideDocComment())
				buf.append("; inDoc"); //$NON-NLS-1$
			if (match.getElement() instanceof IJavaElement)
				buf.append("; in: ").append(((IJavaElement) match.getElement()).getElementName()); //$NON-NLS-1$
			buf.append('\n');
		}
		return buf.toString();
	}
}