498 lines
20 KiB
Java
498 lines
20 KiB
Java
import java.io.BufferedReader;
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import java.io.InputStreamReader;
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import java.io.IOException;
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import java.math.BigDecimal;
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import java.math.MathContext;
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import java.math.RoundingMode;
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import java.nio.charset.StandardCharsets;
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import java.text.DecimalFormat;
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import java.time.format.DateTimeFormatter;
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import java.time.LocalTime;
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import java.time.temporal.ChronoUnit;
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import java.util.Arrays;
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import java.util.concurrent.TimeUnit;
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import java.util.List;
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import java.util.Objects;
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import java.util.regex.Pattern;
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import java.util.stream.Collectors;
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public class LoadingBar {
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private static final String TIME_FORMAT = "HH:mm";
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private static final DateTimeFormatter TIME_FORMATTER = DateTimeFormatter.ofPattern(TIME_FORMAT);
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private static final Pattern TIME_PATTERN = Pattern.compile("(?>[01]\\d|2[0-4]):[0-5]\\d");
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private static final Pattern LUNCH_DURATION_PATTERN = Pattern.compile("\\d+");
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private static final Pattern OFFSET_PATTERN = Pattern.compile("[+-]\\d+");
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private static final DecimalFormat PERCENTAGE_FORMAT = new DecimalFormat("00.00");
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private static final int MIN_LUNCH_DURATION = 30;
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private static final LocalTime LATEST_LUNCH_TIME = LocalTime.of(13, 30);
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private static final int MINS_PER_HOUR = 60;
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private static final BigDecimal MINS_PER_HOUR_BD = BigDecimal.valueOf(MINS_PER_HOUR);
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private static final long DEFAULT_NUMBER_WORK_MINS_BEFORE_LUNCH = 5L * MINS_PER_HOUR;
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private static final int MAX_NUMBER_WORK_MINS_WITHOUT_LUNCH = 6 * MINS_PER_HOUR;
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private static final long MAX_NUMBER_WORK_MINS = 8L * MINS_PER_HOUR;
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private static final int LINE_LENGTH = 100;
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private static final MathContext MC_INTEGER = new MathContext(1, RoundingMode.HALF_EVEN);
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private static final BigDecimal ONE_HUNDRED_PERCENT = BigDecimal.valueOf(100);
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private enum DaySection {
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MITTAG("-m", "Mittag"),
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ZAPFENSTREICH("-z", "Zapfenstreich");
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private final String param;
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private final String description;
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DaySection(String param, String description) {
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this.param = param;
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this.description = description;
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}
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public static DaySection byParam(String param) {
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return Arrays.stream(DaySection.values()).filter((DaySection section) -> section.getParam().equals(param)).findFirst().orElse(null);
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}
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public String getParam() {
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return param;
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}
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public String getDescription() {
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return description;
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}
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}
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private final LocalTime startTime;
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private LocalTime endTime;
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private long totalMinutes;
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private BigDecimal totalMinutesBD;
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private LoadingBar(LocalTime startTime) {
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this.startTime = startTime;
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}
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private void setEndTime(LocalTime endTime) {
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this.endTime = endTime;
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this.totalMinutes = startTime.until(endTime, ChronoUnit.MINUTES);
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this.totalMinutesBD = BigDecimal.valueOf(totalMinutes);
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}
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public static void main(String[] args) throws IOException {
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if (args.length == 0) {
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askParametersAndRun();
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} else {
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parseParametersAndRun(args);
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}
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}
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private static void askParametersAndRun() throws IOException {
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var br = new BufferedReader(new InputStreamReader(System.in, StandardCharsets.UTF_8));
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print("Ankunftszeit: ");
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var startTime = LocalTime.parse(br.readLine(), TIME_FORMATTER).truncatedTo(ChronoUnit.MINUTES);
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var lb = new LoadingBar(startTime);
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if (lb.hasMittagspauseArrived()) {
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handleMittagspause(br, lb);
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lb.showLoadingBar();
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}
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handleZapfenstreich(br, lb);
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lb.showLoadingBar();
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}
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private static void println(Object o) {
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System.out.println(o);
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}
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private static void print(Object o) {
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System.out.print(o);
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}
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private static void handleMittagspause(BufferedReader br, LoadingBar lb) throws IOException {
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print("Mittagspause verschieben um (optional): ");
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String mittagspauseOffsetRaw = br.readLine();
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if (mittagspauseOffsetRaw != null && !mittagspauseOffsetRaw.isBlank()) {
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var mittagspauseOffset = Integer.parseInt(mittagspauseOffsetRaw);
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lb.initMittagspause(mittagspauseOffset);
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return;
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}
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print("Mittagspause um (optional): ");
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String manualMittagspauseRaw = br.readLine();
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if (manualMittagspauseRaw != null && !manualMittagspauseRaw.isBlank()) {
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var manualMittagspause = LocalTime.parse(manualMittagspauseRaw, TIME_FORMATTER).truncatedTo(ChronoUnit.MINUTES);
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lb.initMittagspause(manualMittagspause);
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} else {
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lb.initMittagspause();
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}
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}
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private static void handleZapfenstreich(BufferedReader br, LoadingBar lb) throws IOException {
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print("Mittagspause hat gedauert (optional): ");
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String mittagspauseDurationRaw = br.readLine();
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Integer mittagspauseDuration = null;
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if (mittagspauseDurationRaw != null && !mittagspauseDurationRaw.isBlank()) {
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mittagspauseDuration = Integer.valueOf(mittagspauseDurationRaw);
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}
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LocalTime vorlaeufigeEndzeit = lb.startTime.plusMinutes(MAX_NUMBER_WORK_MINS)
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.plusMinutes(mittagspauseDuration != null ? mittagspauseDuration : MIN_LUNCH_DURATION);
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println("Endzeit: " + TIME_FORMATTER.format(vorlaeufigeEndzeit));
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print("Feierabend verschieben um (optional): ");
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String zapfenstreichOffsetRaw = br.readLine();
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Integer zapfenstreichOffset = null;
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if (zapfenstreichOffsetRaw != null && !zapfenstreichOffsetRaw.isBlank()) {
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zapfenstreichOffset = Integer.valueOf(zapfenstreichOffsetRaw);
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lb.initZapfenstreich(mittagspauseDuration, zapfenstreichOffset);
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return;
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}
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print("Manuelle Uhrzeit Feierabend (optional): ");
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String manualZapfenstreichRaw = br.readLine();
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LocalTime manualZapfenstreich = null;
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if (manualZapfenstreichRaw != null && !manualZapfenstreichRaw.isBlank()) {
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manualZapfenstreich = LocalTime.parse(manualZapfenstreichRaw, TIME_FORMATTER).truncatedTo(ChronoUnit.MINUTES);
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lb.initZapfenstreich(mittagspauseDuration, manualZapfenstreich);
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} else {
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lb.initZapfenstreich(mittagspauseDuration);
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}
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}
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private static void parseParametersAndRun(String[] args) {
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LoadingBar lb = getLoadingBarFromCLI(args);
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lb.showLoadingBar();
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}
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private static LoadingBar getLoadingBarFromCLI(String[] args) {
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String nextArg = args[0];
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if ("--help".equals(nextArg)) {
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printHelp();
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System.exit(1);
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}
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verifyMinimumNumberOfArgs(args);
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verifyTimeFormat(nextArg, "Erstes Argument");
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var startTime = LocalTime.parse(nextArg, TIME_FORMATTER).truncatedTo(ChronoUnit.MINUTES);
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nextArg = args[1];
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var section = DaySection.byParam(nextArg);
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verifyDaySection(section, nextArg);
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return section == DaySection.MITTAG ? getLoadingBarMittagspause(args, startTime) : getLoadingBarZapfenstreich(args, startTime);
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}
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private static LoadingBar getLoadingBarMittagspause(String[] args, LocalTime startTime) {
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var lb = new LoadingBar(startTime);
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if (args.length == 2) {
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lb.initMittagspause();
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return lb;
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}
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String nextArg = args[2];
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if (OFFSET_PATTERN.matcher(nextArg).matches()) {
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lb.initMittagspause(Integer.parseInt(nextArg));
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return lb;
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}
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verifyTimeFormat(nextArg, "Argument nach " + DaySection.MITTAG.getParam());
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var manualMittagspause = LocalTime.parse(nextArg, TIME_FORMATTER).truncatedTo(ChronoUnit.MINUTES);
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lb.initMittagspause(manualMittagspause);
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return lb;
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}
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private static LoadingBar getLoadingBarZapfenstreich(String[] args, LocalTime startTime) {
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var lb = new LoadingBar(startTime);
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if (args.length == 2) {
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lb.initZapfenstreich();
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return lb;
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}
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String nextArg = args[2];
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LocalTime maxZapfenstreich = null;
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int endTimeOffset = 0;
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Integer lunchDuration = null;
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if (TIME_PATTERN.matcher(nextArg).matches()) {
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maxZapfenstreich = LocalTime.parse(nextArg, TIME_FORMATTER).truncatedTo(ChronoUnit.MINUTES);
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} else if (OFFSET_PATTERN.matcher(nextArg).matches()) {
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endTimeOffset = Integer.parseInt(nextArg);
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} else {
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verifyDurationFormat(nextArg, "Argument nach " + DaySection.ZAPFENSTREICH.getParam());
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lunchDuration = Integer.parseInt(nextArg);
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}
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if (args.length == 3) {
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if (maxZapfenstreich == null && endTimeOffset == 0) {
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lb.initZapfenstreich(lunchDuration);
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} else if (maxZapfenstreich == null) {
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lb.initZapfenstreich(lunchDuration, endTimeOffset);
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} else {
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lb.initZapfenstreich(lunchDuration, maxZapfenstreich);
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}
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return lb;
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}
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nextArg = args[3];
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if (lunchDuration == null) {
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println("Letztes Argument darf nur auf Mittagspausendauer folgen.");
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System.exit(1);
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}
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if (maxZapfenstreich == null && !OFFSET_PATTERN.matcher(nextArg).matches()) {
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verifyTimeFormat(nextArg, "Letztes Argument nach " + DaySection.ZAPFENSTREICH.getParam() + " und Mittagspausendauer");
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maxZapfenstreich = LocalTime.parse(nextArg, TIME_FORMATTER).truncatedTo(ChronoUnit.MINUTES);
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lb.initZapfenstreich(lunchDuration, maxZapfenstreich);
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return lb;
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}
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verifyOffsetFormat(nextArg, "Letztes Argument nach " + DaySection.ZAPFENSTREICH.getParam() + " und Enduhrzeit");
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endTimeOffset = Integer.parseInt(nextArg);
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lb.initZapfenstreich(lunchDuration, endTimeOffset);
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return lb;
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}
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private static void verifyMinimumNumberOfArgs(String[] args) {
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if (args.length >= 2) {
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return;
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}
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println("Mindestens 2 Argumente müssen gegeben sein.");
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printHelp();
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System.exit(1);
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}
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private static void verifyTimeFormat(String param, String errMsgPrefix) {
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verifyInputFormat(TIME_PATTERN, param, errMsgPrefix, "Uhrzeitformat (" + TIME_FORMAT + ")", false);
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}
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private static void verifyDurationFormat(String param, String errMsgPrefix) {
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verifyInputFormat(LUNCH_DURATION_PATTERN, param, errMsgPrefix, "Minutenanzahl (ganze Zahl)", true);
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}
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private static void verifyOffsetFormat(String param, String errMsgPrefix) {
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verifyInputFormat(OFFSET_PATTERN, param, errMsgPrefix, "Minutendifferenz (ganze Zahl mit Vorzeichen)", false);
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}
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private static void verifyInputFormat(Pattern pattern, String param, String errMsgPrefix, String firstInputPart, boolean timeInputPossible) {
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if (pattern.matcher(param).matches()) {
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return;
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}
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var possibleTimeInputPart = timeInputPossible ? " oder Uhrzeitformat (" + TIME_FORMAT + ")" : "";
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println(errMsgPrefix + " \"" + param + "\" muss " + firstInputPart + possibleTimeInputPart + " entsprechen.");
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System.exit(1);
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}
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private static void verifyDaySection(DaySection section, String param) {
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if (section != null) {
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return;
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}
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List<String> sectionDescs = Arrays.stream(DaySection.values()).map((DaySection ds) -> ds.getDescription() + " (" + ds.getParam() + ")")
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.collect(Collectors.toList());
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String sectionDescsJoined = String.join(" oder ", sectionDescs);
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println("Argument nach Startzeit \"" + param + "\" muss Angabe für " + sectionDescsJoined + " sein.");
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System.exit(1);
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}
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private static void printHelp() {
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println("Mögliche Argumente für LoadingBar:\n"
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+ "Normalfall Vormittag (Mittagspause <= " + LATEST_LUNCH_TIME + ")\n"
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+ TIME_FORMAT + " " + DaySection.MITTAG.getParam() + "\n"
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+ "Vormittag mit expliziter Mittagspause (<= " + LATEST_LUNCH_TIME + ")\n"
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+ TIME_FORMAT + " " + DaySection.MITTAG.getParam() + " " + TIME_FORMAT + "\n"
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+ "Vormittag mit abweichender Minutenanzahl Arbeitszeit\n"
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+ TIME_FORMAT + " " + DaySection.MITTAG.getParam() + " -+mm\n"
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+ "Normalfall Nachmittag (Mittagspause " + MIN_LUNCH_DURATION + " min)\n"
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+ TIME_FORMAT + " " + DaySection.ZAPFENSTREICH.getParam() + "\n"
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+ "Nachmittag mit expliziter Länge Mittagspause (Mittagspause unter " + MIN_LUNCH_DURATION + " min wird auf " + MIN_LUNCH_DURATION + " min korrigiert)\n"
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+ TIME_FORMAT + " " + DaySection.ZAPFENSTREICH.getParam() + " mm\n"
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+ "Nachmittag mit explizitem Feierabend (Mittagspause je nach Minimum (s.u.))\n"
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+ TIME_FORMAT + " " + DaySection.ZAPFENSTREICH.getParam() + " " + TIME_FORMAT + "\n"
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+ "Nachmittag mit abweichender Minutenanzahl Arbeitszeit\n"
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+ TIME_FORMAT + " " + DaySection.ZAPFENSTREICH.getParam() + " -+mm\n"
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+ "Nachmittag mit explizitem Feierabend u. expliziter Länge Mittagspause (Mittagspause unter Minimum (s.u.) wird auf Minimum korrigiert)\n"
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+ TIME_FORMAT + " " + DaySection.ZAPFENSTREICH.getParam() + " mm " + TIME_FORMAT + "\n"
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+ "Nachmittag mit explizitem Feierabend u. abweichender Minutenanzahl Arbeitszeit\n"
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+ TIME_FORMAT + " " + DaySection.ZAPFENSTREICH.getParam() + " " + TIME_FORMAT + " -+mm\n\n"
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+ "Mittagspause minimum in Minuten:\n"
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+ " - bis " + MAX_NUMBER_WORK_MINS_WITHOUT_LUNCH + " min ("
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+ MAX_NUMBER_WORK_MINS_WITHOUT_LUNCH / MINS_PER_HOUR + " std): 0\n"
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+ " - bis " + MAX_NUMBER_WORK_MINS_WITHOUT_LUNCH + " min + "
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+ MIN_LUNCH_DURATION + " min: Arbeitszeit - " + MAX_NUMBER_WORK_MINS_WITHOUT_LUNCH + " min\n"
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+ " - ab " + MAX_NUMBER_WORK_MINS_WITHOUT_LUNCH + " min + " + MIN_LUNCH_DURATION + " min: "
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+ MIN_LUNCH_DURATION + " min\n"
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);
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}
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private boolean hasMittagspauseArrived() {
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return startTime.until(LocalTime.now(), ChronoUnit.MINUTES) < DEFAULT_NUMBER_WORK_MINS_BEFORE_LUNCH;
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}
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private void initMittagspause() {
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LocalTime defaultEndTime = startTime.plusMinutes(DEFAULT_NUMBER_WORK_MINS_BEFORE_LUNCH);
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realInitMittagspause(defaultEndTime);
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}
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private void initMittagspause(int endTimeOffset) {
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LocalTime offsetEndTime = startTime.plusMinutes(DEFAULT_NUMBER_WORK_MINS_BEFORE_LUNCH + endTimeOffset);
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realInitMittagspause(offsetEndTime);
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}
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private void initMittagspause(LocalTime manualEndTime) {
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LocalTime effectiveEndTime = manualEndTime != null ? manualEndTime : startTime.plusMinutes(DEFAULT_NUMBER_WORK_MINS_BEFORE_LUNCH);
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realInitMittagspause(effectiveEndTime);
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}
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private void realInitMittagspause(LocalTime theoreticalEndTime) {
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setEndTime(theoreticalEndTime.isAfter(LATEST_LUNCH_TIME) ? LATEST_LUNCH_TIME : theoreticalEndTime);
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}
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private void initZapfenstreich() {
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LocalTime trueEndTime = startTime.plusMinutes(MAX_NUMBER_WORK_MINS + MIN_LUNCH_DURATION);
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realInitZapfenstreich(MIN_LUNCH_DURATION, trueEndTime);
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}
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private void initZapfenstreich(Integer manualLunchDuration) {
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initZapfenstreich(manualLunchDuration, 0);
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}
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private void initZapfenstreich(Integer manualLunchDuration, int endTimeOffset) {
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long minLunchDuration = getMinLunchDuration(endTimeOffset);
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long realLunchDuration = getRealLunchDuration(manualLunchDuration, minLunchDuration);
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LocalTime trueEndTime = startTime.plusMinutes(MAX_NUMBER_WORK_MINS + realLunchDuration + endTimeOffset);
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realInitZapfenstreich(realLunchDuration, trueEndTime);
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}
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private void initZapfenstreich(Integer manualLunchDuration, LocalTime manualEndTime) {
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LocalTime trueEndTime = manualEndTime;
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long minLunchDuration = getMinLunchDuration(trueEndTime);
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long realLunchDuration = getRealLunchDuration(manualLunchDuration, minLunchDuration);
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if (trueEndTime == null) {
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trueEndTime = startTime.plusMinutes(MAX_NUMBER_WORK_MINS + realLunchDuration);
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}
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realInitZapfenstreich(realLunchDuration, trueEndTime);
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}
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private long getMinLunchDuration(int endTimeOffset) {
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if (endTimeOffset == 0) {
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return MIN_LUNCH_DURATION;
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}
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long totalDuration = MAX_NUMBER_WORK_MINS + endTimeOffset;
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long effectiveLunchDuration = totalDuration - MAX_NUMBER_WORK_MINS_WITHOUT_LUNCH;
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return getMinLunchDuration(effectiveLunchDuration);
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}
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private long getMinLunchDuration(LocalTime manualEndTime) {
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if (manualEndTime == null) {
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return MIN_LUNCH_DURATION;
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}
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long totalDuration = startTime.until(manualEndTime, ChronoUnit.MINUTES);
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long effectiveLunchDuration = totalDuration - MAX_NUMBER_WORK_MINS_WITHOUT_LUNCH;
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return getMinLunchDuration(effectiveLunchDuration);
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}
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private long getMinLunchDuration(long effectiveLunchDuration) {
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if (effectiveLunchDuration < 0) {
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effectiveLunchDuration = 0;
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}
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return Math.min(effectiveLunchDuration, MIN_LUNCH_DURATION);
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}
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private long getRealLunchDuration(Integer manualLunchDuration, long minLunchDuration) {
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return manualLunchDuration != null && manualLunchDuration >= minLunchDuration ? manualLunchDuration : minLunchDuration;
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}
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private void realInitZapfenstreich(long effectiveLunchDuration, LocalTime effectiveEndTime) {
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if (effectiveLunchDuration > 0) {
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var totalWorkTime = LocalTime.MIDNIGHT.plusMinutes(startTime.until(effectiveEndTime, ChronoUnit.MINUTES) - effectiveLunchDuration);
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print("Arbeitszeit: " + TIME_FORMATTER.format(totalWorkTime) + "; ");
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}
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setEndTime(effectiveEndTime);
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}
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private void showLoadingBar() {
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long passedMinutes = startTime.until(LocalTime.now().truncatedTo(ChronoUnit.MINUTES), ChronoUnit.MINUTES);
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// long passedMinutes = 0; // DEBUG
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if (passedMinutes > totalMinutes) {
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passedMinutes = totalMinutes;
|
|
} else if (passedMinutes < 0) {
|
|
var now = LocalTime.now().truncatedTo(ChronoUnit.SECONDS);
|
|
println("!ACHTUNG! Startzeit \"" + startTime + ":00\" liegt in der Zukunft von jetzt an (" + now + ") gesehen.");
|
|
}
|
|
println(minutesToTimeString(totalMinutesBD) + " gesamt; Endzeit: " + TIME_FORMATTER.format(endTime));
|
|
while (passedMinutes < totalMinutes) {
|
|
print(fillLoadingBar(passedMinutes, true));
|
|
waitUntilNextMinute();
|
|
passedMinutes++;
|
|
}
|
|
println(fillLoadingBar(passedMinutes, false));
|
|
}
|
|
|
|
|
|
private void waitUntilNextMinute() {
|
|
try {
|
|
var now = LocalTime.now();
|
|
var oneMinuteLater = now.plusMinutes(1).truncatedTo(ChronoUnit.MINUTES);
|
|
/* We wait whole seconds to not make it overly complicated.
|
|
That results in cut milliseconds: if we would have to wait 1 second and 526 milliseconds, we wait only 1 second.
|
|
So, adjust for ignored milliseconds, add +1 second as it is better to switch between 00 and 01 as between 59 and 00 */
|
|
TimeUnit.SECONDS.sleep(now.until(oneMinuteLater, ChronoUnit.SECONDS) + 1);
|
|
// TimeUnit.MILLISECONDS.sleep(100L); // DEBUG
|
|
} catch (InterruptedException ie) {
|
|
Thread.currentThread().interrupt();
|
|
throw new RuntimeException(ie);
|
|
}
|
|
}
|
|
|
|
|
|
private String fillLoadingBar(long passedMinutes, boolean progressive) {
|
|
var nonNegativePassedMinutes = BigDecimal.valueOf(passedMinutes < 0 ? 0 : passedMinutes);
|
|
BigDecimal wholePercentage = ONE_HUNDRED_PERCENT
|
|
// kind of reverse dreisatz to avoid having e.g. 99.9999 instead of 100 %
|
|
.multiply(nonNegativePassedMinutes)
|
|
.divide(totalMinutesBD, MathContext.DECIMAL64);
|
|
int numberOfEquals = wholePercentage.intValue();
|
|
var sb = new StringBuilder("[");
|
|
for (int i = 0; i < LINE_LENGTH; i++) {
|
|
if (i < numberOfEquals) {
|
|
sb.append("=");
|
|
} else {
|
|
sb.append("-");
|
|
}
|
|
}
|
|
BigDecimal remainingMinutes = totalMinutesBD.subtract(nonNegativePassedMinutes);
|
|
sb.append("] ").append(PERCENTAGE_FORMAT.format(wholePercentage)).append("% ")
|
|
.append(minutesToTimeString(nonNegativePassedMinutes)).append(" - ").append(minutesToTimeString(remainingMinutes));
|
|
if (progressive) {
|
|
sb.append("\r");
|
|
}
|
|
return sb.toString();
|
|
}
|
|
|
|
|
|
private String minutesToTimeString(BigDecimal minutes) {
|
|
BigDecimal[] hoursAndMinutes = minutes.divideAndRemainder(MINS_PER_HOUR_BD, MC_INTEGER);
|
|
return LocalTime.of(hoursAndMinutes[0].intValue(), hoursAndMinutes[1].intValue()).format(TIME_FORMATTER);
|
|
}
|
|
}
|