package com.gsmbiz.gsncoupon.util;

import org.apache.commons.lang3.StringUtils;

/**
 * @author jason, Moon (jason.moon.kr@gmail.com)
 * @since 2018-05-11
 */
public class MaskingUtils {
    /**
     * @since 2018-05-11
     * @author jason, Moon (jason.moon.kr@gmail.com)
     * @param source : 마스킹할 문자열
     * @return 마스킹된 문자열
     * <pre>
     *     input: 홍길동, output: 홍*동
     *     input: 최영, output: 최*
     *     input: 반딧불이, output: 반**이
     * </pre>
     */
    public static String maskingName(String source) {
        StringBuilder destination = new StringBuilder();

        if (source.length() == 2) {
            destination.append(source, 0, 1);
            destination.append("*");
        } else {
            destination.append(source, 0, 1);
            destination.append(StringUtils.repeat("*", source.length()-2));
            destination.append(source, source.length() - 1, source.length());
        }

        return destination.toString();
    }

    /**
     * @since 2018-05-11
     * @author jason, Moon (jason.moon.kr@gmail.com)
     * @param source : 마스킹할 문자열
     * @return 마스킹된 문자열
     * <pre>
     *     input: 010-1234-1234, output: 010-****-1234
     *     input: 1234-1234, output: 1234-****
     *     input: 1234-1234-1234-1234, output: 1234-****-****-1234
     * </pre>
     */
    public static String maskingPhoneNumber(String source) {
        String[] sourceArr = source.split("-", -1);

        String[] destination = new String[sourceArr.length];

        if (sourceArr.length == 2) {
            destination[0] = sourceArr[0];
            destination[1] = "*";
        } else {
            for (int i = 0; i < destination.length; i++) {
                if (i == 0) {
                    destination[i] = sourceArr[i];
                } else if (i == destination.length - 1) {
                    destination[i] = sourceArr[i];
                } else {
                    destination[i] = StringUtils.repeat("*", sourceArr[i].length());
                }
            }
        }

        return StringUtils.join(destination, "-");
    }
}