/*
 * eGov suite of products aim to improve the internal efficiency,transparency,
 *    accountability and the service delivery of the government  organizations.
 *
 *     Copyright (C) <2015>  eGovernments Foundation
 *
 *     The updated version of eGov suite of products as by eGovernments Foundation
 *     is available at http://www.egovernments.org
 *
 *     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 3 of the License, or
 *     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, see http://www.gnu.org/licenses/ or
 *     http://www.gnu.org/licenses/gpl.html .
 *
 *     In addition to the terms of the GPL license to be adhered to in using this
 *     program, the following additional terms are to be complied with:
 *
 *         1) All versions of this program, verbatim or modified must carry this
 *            Legal Notice.
 *
 *         2) Any misrepresentation of the origin of the material is prohibited. It
 *            is required that all modified versions of this material be marked in
 *            reasonable ways as different from the original version.
 *
 *         3) This license does not grant any rights to any user of the program
 *            with regards to rights under trademark law for use of the trade names
 *            or trademarks of eGovernments Foundation.
 *
 *   In case of any queries, you can reach eGovernments Foundation at contact@egovernments.org.
 */

package org.egov.infra.utils;

import org.apache.commons.lang.StringEscapeUtils;
import org.json.simple.JSONObject;

import java.nio.charset.Charset;
import java.util.Arrays;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class StringUtils extends org.apache.commons.lang.StringUtils {

	public static final Pattern SPL_CHAR_PATRN = Pattern.compile("([&;,+=\\[\\]\\{\\}><^\\(\\)#:~`/\\\\!\'\"])");

	/**
	 * Helper method to remove special characters like new line, space and single quote
	 * @return String
	 */
	public static String escapeSpecialChars(final String str) {
		return str.replaceAll("\\s\\s+|\\r\\n", "<br/>").replaceAll("\'", "\\\\'");
	}

	/**
	 * Escape the given string so that it can be safely used inside javascript
	 * @return String the escaped string
	 */
	public static String escapeJavaScript(final String str) {
		return StringEscapeUtils.escapeJavaScript(str);
	}

	public static String escapeJSON(final String str) {
		return JSONObject.escape(str);
	}

	/**
	 * Checks if the given String value contains special characters ([,&,;,,,+,=,{,},>,<,^,(,),#,:,~,`,/,\,!,',",])
	 * @param str a String value
	 * @return boolean hasSpecialChars
	 */
	public static boolean hasSpecialChars(final String str) {
		final Matcher matcher = SPL_CHAR_PATRN.matcher(str);
		return matcher.find();
	}

	public static String emptyIfNull(final String value) {
		return value == null ? EMPTY : value;
	}

	public static String[] toStringArray(final String... values) {
		return values;
	}

	public static List<String> toList(final String... values) {
		return Arrays.asList(values);
	}

	public static String encodeString(String string) {
		return org.apache.commons.lang3.StringUtils.toEncodedString(string.getBytes(), Charset.forName("UTF-8"));
	}

	public static String [] listToStringArray(List<String> values) {
		return values.stream().toArray(String[]::new);
	}

}