80 lines
3 KiB
Java
80 lines
3 KiB
Java
package de.jotoho.waituntil;
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import java.time.Instant;
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import java.time.LocalDate;
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import java.time.LocalTime;
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import java.time.ZonedDateTime;
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import java.time.format.DateTimeFormatter;
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import java.time.format.FormatStyle;
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import java.util.TimeZone;
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import static java.lang.System.Logger.Level;
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/*
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waituntil - a tool for delaying command execution until the specified time
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Copyright (C) 2023 Jonas Tobias Hopusch
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/**
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* A utility class for calculating and announcing a target time based on user input.
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*/
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public final class TimeCalculator {
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private static final String LANG_GERMAN = GlobalConf.langGerman;
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/**
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* Calculates and announces the target time based on the user input.
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*
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* @param userTimeInputRaw the user input representing the desired time
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* @return the calculated target time as a {@link ZonedDateTime} object
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*/
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public static ZonedDateTime calculateAndAnnounceTargetTime(final String userTimeInputRaw) {
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// Parsing user input to obtain the desired time
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final var userTimeInputRelative = LocalTime.parse(userTimeInputRaw);
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final var userTimeInputAbsolute = ZonedDateTime.of(
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LocalDate.now(),
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userTimeInputRelative,
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TimeZone.getDefault().toZoneId()
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);
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// Adjusting the target time if it has already passed for the current day
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final var userTimeInputFinal = (Instant.now().isBefore(userTimeInputAbsolute.toInstant()))
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? userTimeInputAbsolute
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: userTimeInputAbsolute.plusDays(1);
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// Formatting the target time for display
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final var formattedTimeStamp = userTimeInputFinal.format(
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DateTimeFormatter.ofLocalizedDateTime(FormatStyle.LONG)
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);
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// Constructing the appropriate message based on the output language
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final String formattedMessage;
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switch (GlobalConf.applicationOutputLanguage) {
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case LANG_GERMAN:
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formattedMessage = ("Dieses Program wird bis zum %s warten.").formatted(formattedTimeStamp);
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break;
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default:
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formattedMessage = "WaitUntil will suspend until %s".formatted(formattedTimeStamp);
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break;
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}
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// Logging the message
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System.getLogger("timecalculator").log(Level.INFO, formattedMessage);
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return userTimeInputFinal;
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}
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}
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