Java LocalDateTime Calculate WizzAirDatetimeCorrection(LocalDateTime aLocalDateTime)

Description

Wizz Air Datetime Correction

License

Apache License

Declaration

public static LocalDateTime WizzAirDatetimeCorrection(LocalDateTime aLocalDateTime) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.time.*;

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

public class Main {
    public static LocalDateTime WizzAirDatetimeCorrection(LocalDateTime aLocalDateTime) {
        // TODO: why must I add 1 more hour to get the right time?

        ZonedDateTime lZDT = aLocalDateTime.atZone(ZoneId.of("Europe/Budapest"));
        ZoneOffset lZO = lZDT.getOffset();
        String lZId = lZO.getId();

        Pattern reg = Pattern.compile("(\\+|-)(\\d{2})\\:(\\d{2})");
        Matcher m = reg.matcher(lZId);

        if (m.find()) {
            String lPrefix = m.group(1).toString().trim();
            String lHours = m.group(2).toString().trim();
            String lMinutes = m.group(3).toString().trim();

            if (lHours.charAt(0) == '0')
                lHours = lHours.substring(1);
            int lIHours = Integer.parseInt(lHours);
            if (lMinutes.charAt(0) == '0')
                lMinutes = lMinutes.substring(1);
            int lIMinutes = Integer.parseInt(lMinutes);

            if (lPrefix.equals("+")) {
                aLocalDateTime = aLocalDateTime.plusHours(lIHours - 1);
                aLocalDateTime = aLocalDateTime.plusMinutes(lIMinutes);
            } else {
                aLocalDateTime = aLocalDateTime.minusHours(lIHours - 1);
                aLocalDateTime = aLocalDateTime.minusMinutes(lIMinutes);
            }//from  w  ww  .  j a va  2 s  . c o m
        }

        return aLocalDateTime;
    }
}

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