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/**
 * SPDX-FileCopyrightText: (c) 2000 Liferay, Inc. https://liferay.com
 * SPDX-License-Identifier: LGPL-2.1-or-later OR LicenseRef-Liferay-DXP-EULA-2.0.0-2023-06
 */

package com.liferay.source.formatter.check;

import com.liferay.petra.string.StringBundler;
import com.liferay.portal.kernel.util.StringUtil;
import com.liferay.portal.kernel.util.TextFormatter;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @author Hugo Huijser
 */
public class EmptyCollectionCheck extends BaseFileCheck {

	@Override
	protected String doProcess(
		String fileName, String absolutePath, String content) {

		Matcher matcher = _emptyCollectionPattern.matcher(content);

		if (!matcher.find()) {
			return content;
		}

		String replacement = StringBundler.concat(
			"Collections.empty",
			TextFormatter.format(matcher.group(1), TextFormatter.J), "()");

		return StringUtil.replace(content, matcher.group(), replacement);
	}

	private static final Pattern _emptyCollectionPattern = Pattern.compile(
		"Collections\\.EMPTY_(LIST|MAP|SET)");

}