metrolink.MetrolinkCalculator.java Source code

Introduction

Here is the source code for metrolink.MetrolinkCalculator.java

Source

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package metrolink;

import java.time.LocalTime;
import java.time.temporal.ChronoUnit;
import java.util.Arrays;
import java.util.List;

import metrolink.core.entities.StopTime;
import org.springframework.stereotype.Component;

/**
 *
 * @author Scott Meyer
 */

public class MetrolinkCalculator {

    private static final long ONEDAYINMINUTES = 1440;

    public long getNextArrivalTime(List<StopTime> stopTimes, String time) {
        LocalTime[] timeArray = new LocalTime[stopTimes.size()];
        for (int i = 0; i < stopTimes.size(); i++) {
            timeArray[i] = convertTime(stopTimes.get(i).getArrivalTime());
        }
        Arrays.sort(timeArray);
        LocalTime convertedTime = convertTime(time);
        LocalTime timeResult = null;
        for (LocalTime currentTime : timeArray) {
            //            System.out.println( currentTime );
            if (currentTime.compareTo(convertedTime) >= 0) {
                timeResult = currentTime;
                break;
            }
        }
        if (timeResult == null) {
            timeResult = timeArray[0];
        }
        long difference = convertedTime.until(timeResult, ChronoUnit.MINUTES);
        if (difference < 0) {
            difference += ONEDAYINMINUTES;
        }
        return difference;
    }

    private LocalTime convertTime(String time) {
        String[] values = time.split(":");
        int hour = Integer.parseInt(values[0]);
        int minute = Integer.parseInt(values[1]);
        int second = 0;

        if (hour >= 24) {
            hour = hour - 24;
        }

        return LocalTime.of(hour, minute, second);
    }

}