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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.layout.util;

import com.liferay.petra.string.StringPool;
import com.liferay.portal.kernel.portlet.PortalPreferences;
import com.liferay.portal.kernel.util.ListUtil;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author Rubén Pulido
 */
public class PortalPreferencesUtil {

	public static List getSortedPortalPreferencesValues(
		PortalPreferences portalPreferences, String namespace, String key) {

		return ListUtil.fromArray(
			_removeNumberPrefix(
				portalPreferences.getValues(namespace, key, new String[0])));
	}

	public static void updateSortedPortalPreferencesValues(
		PortalPreferences portalPreferences, String namespace, String key,
		String[] sortedValues) {

		portalPreferences.setValues(
			namespace, key, _addNumberPrefix(sortedValues));
	}

	private static String[] _addNumberPrefix(String[] sortedValues) {
		String[] numberedSortedValues = new String[sortedValues.length];

		for (int i = 0; i < sortedValues.length; i++) {
			numberedSortedValues[i] =
				i + StringPool.DOUBLE_DOLLAR + sortedValues[i];
		}

		return numberedSortedValues;
	}

	private static String[] _removeNumberPrefix(String[] numberedValues) {
		String[] sortedValues = new String[numberedValues.length];

		Map numberValuesMap = new HashMap<>();

		for (String numberedValue : numberedValues) {
			numberValuesMap.put(
				numberedValue.substring(
					0, numberedValue.indexOf(StringPool.DOUBLE_DOLLAR)),
				numberedValue.substring(
					numberedValue.indexOf(StringPool.DOUBLE_DOLLAR) + 2));
		}

		for (int i = 0; i < numberedValues.length; i++) {
			sortedValues[i] = numberValuesMap.get(String.valueOf(i));
		}

		return sortedValues;
	}

}