.github/CODEOWNERS

@@ -1 +0,0 @@
-* @jotoho

.gitignore

@@ -31,12 +31,10 @@ hs_err_pid*
 build
 
 # Ignore gradle wrapper
-gradlew
+/gradle
-gradlew.bat
+/gradlew
+/gradlew.bat
 
 # Ignore manual compilation results
 /de/jotoho/
 /META-INF
-/.idea/*
-!/.idea/codeStyles/
-*.zst

.idea/codeStyles/Project.xml

@@ -1,84 +0,0 @@
-<component name="ProjectCodeStyleConfiguration">
-  <code_scheme name="Project" version="173">
-    <option name="LINE_SEPARATOR" value="&#10;" />
-    <option name="RIGHT_MARGIN" value="100" />
-    <option name="WRAP_WHEN_TYPING_REACHES_RIGHT_MARGIN" value="true" />
-    <option name="ENABLE_SECOND_REFORMAT" value="true" />
-    <option name="SOFT_MARGINS" value="80" />
-    <JavaCodeStyleSettings>
-      <option name="ANNOTATION_PARAMETER_WRAP" value="5" />
-      <option name="ALIGN_MULTILINE_ANNOTATION_PARAMETERS" value="true" />
-      <option name="ALIGN_MULTILINE_TEXT_BLOCKS" value="true" />
-      <option name="JD_ADD_BLANK_AFTER_PARM_COMMENTS" value="true" />
-      <option name="JD_ADD_BLANK_AFTER_RETURN" value="true" />
-      <option name="JD_P_AT_EMPTY_LINES" value="false" />
-      <option name="JD_KEEP_INVALID_TAGS" value="false" />
-      <option name="JD_KEEP_EMPTY_LINES" value="false" />
-      <option name="JD_DO_NOT_WRAP_ONE_LINE_COMMENTS" value="true" />
-      <option name="JD_PARAM_DESCRIPTION_ON_NEW_LINE" value="true" />
-    </JavaCodeStyleSettings>
-    <JetCodeStyleSettings>
-      <option name="CONTINUATION_INDENT_IN_PARAMETER_LISTS" value="false" />
-      <option name="CONTINUATION_INDENT_IN_ARGUMENT_LISTS" value="false" />
-      <option name="CONTINUATION_INDENT_FOR_CHAINED_CALLS" value="false" />
-      <option name="CONTINUATION_INDENT_IN_SUPERTYPE_LISTS" value="false" />
-      <option name="WRAP_EXPRESSION_BODY_FUNCTIONS" value="1" />
-    </JetCodeStyleSettings>
-    <codeStyleSettings language="JAVA">
-      <option name="KEEP_BLANK_LINES_IN_DECLARATIONS" value="1" />
-      <option name="KEEP_BLANK_LINES_IN_CODE" value="1" />
-      <option name="KEEP_BLANK_LINES_BETWEEN_PACKAGE_DECLARATION_AND_HEADER" value="0" />
-      <option name="KEEP_BLANK_LINES_BEFORE_RBRACE" value="0" />
-      <option name="ALIGN_MULTILINE_CHAINED_METHODS" value="true" />
-      <option name="ALIGN_MULTILINE_PARAMETERS_IN_CALLS" value="true" />
-      <option name="ALIGN_MULTILINE_BINARY_OPERATION" value="true" />
-      <option name="ALIGN_MULTILINE_ASSIGNMENT" value="true" />
-      <option name="ALIGN_MULTILINE_TERNARY_OPERATION" value="true" />
-      <option name="ALIGN_MULTILINE_THROWS_LIST" value="true" />
-      <option name="ALIGN_MULTILINE_EXTENDS_LIST" value="true" />
-      <option name="ALIGN_MULTILINE_ARRAY_INITIALIZER_EXPRESSION" value="true" />
-      <option name="CALL_PARAMETERS_WRAP" value="5" />
-      <option name="METHOD_PARAMETERS_WRAP" value="5" />
-      <option name="RESOURCE_LIST_WRAP" value="5" />
-      <option name="EXTENDS_LIST_WRAP" value="1" />
-      <option name="THROWS_LIST_WRAP" value="1" />
-      <option name="EXTENDS_KEYWORD_WRAP" value="1" />
-      <option name="THROWS_KEYWORD_WRAP" value="1" />
-      <option name="METHOD_CALL_CHAIN_WRAP" value="2" />
-      <option name="BINARY_OPERATION_WRAP" value="1" />
-      <option name="TERNARY_OPERATION_WRAP" value="5" />
-      <option name="TERNARY_OPERATION_SIGNS_ON_NEXT_LINE" value="true" />
-      <option name="KEEP_SIMPLE_BLOCKS_IN_ONE_LINE" value="true" />
-      <option name="KEEP_SIMPLE_METHODS_IN_ONE_LINE" value="true" />
-      <option name="KEEP_SIMPLE_LAMBDAS_IN_ONE_LINE" value="true" />
-      <option name="KEEP_SIMPLE_CLASSES_IN_ONE_LINE" value="true" />
-      <option name="FOR_STATEMENT_WRAP" value="5" />
-      <option name="ARRAY_INITIALIZER_WRAP" value="5" />
-      <option name="ARRAY_INITIALIZER_LBRACE_ON_NEXT_LINE" value="true" />
-      <option name="ARRAY_INITIALIZER_RBRACE_ON_NEXT_LINE" value="true" />
-      <option name="ASSIGNMENT_WRAP" value="1" />
-      <option name="WRAP_COMMENTS" value="true" />
-      <option name="ASSERT_STATEMENT_WRAP" value="1" />
-      <option name="WRAP_LONG_LINES" value="true" />
-      <option name="PARAMETER_ANNOTATION_WRAP" value="5" />
-      <option name="VARIABLE_ANNOTATION_WRAP" value="5" />
-      <option name="ENUM_CONSTANTS_WRAP" value="5" />
-      <option name="KEEP_BUILDER_METHODS_INDENTS" value="true" />
-      <indentOptions>
-        <option name="CONTINUATION_INDENT_SIZE" value="4" />
-      </indentOptions>
-    </codeStyleSettings>
-    <codeStyleSettings language="kotlin">
-      <option name="ALIGN_MULTILINE_PARAMETERS_IN_CALLS" value="true" />
-      <option name="ALIGN_MULTILINE_EXTENDS_LIST" value="true" />
-      <option name="CALL_PARAMETERS_WRAP" value="5" />
-      <option name="METHOD_PARAMETERS_WRAP" value="5" />
-      <option name="EXTENDS_LIST_WRAP" value="5" />
-      <option name="METHOD_CALL_CHAIN_WRAP" value="5" />
-      <option name="ASSIGNMENT_WRAP" value="5" />
-      <option name="PARAMETER_ANNOTATION_WRAP" value="5" />
-      <option name="VARIABLE_ANNOTATION_WRAP" value="5" />
-      <option name="ENUM_CONSTANTS_WRAP" value="5" />
-    </codeStyleSettings>
-  </code_scheme>
-</component>

.idea/codeStyles/codeStyleConfig.xml

@@ -1,5 +0,0 @@
-<component name="ProjectCodeStyleConfiguration">
-  <state>
-    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
-  </state>
-</component>

AUTHORS.md

@@ -1,16 +0,0 @@
-# waituntil Contributors / Authors
-
-By adding their names to this document, contributors agree to license all of their
-contributions and patches to the waituntil project [under the AGPL version 3 or later.](./LICENSE.md)
-
-Contributors may choose to supply either their complete legal name, online pseudonym or both.
-At least one is required.
-
-The email, website and notes fields are optional but contributors are encouraged
-to supply at least one reliable method of communication.
-
-## Maintainer(s)
-
-| full name | pseudonym | email | website | notes |
-|-|:-:|-:|-:|-|
-| Jonas Tobias Hopusch | jotoho | [contact@jotoho.de](mailto:contact@jotoho.de) | [www.jotoho.de](https://www.jotoho.de/) | original creator |

README.md

@@ -1,38 +1,12 @@
 # waituntil
 
-A basic tool for delaying work in the terminal to a specific time. This software was originally
+This simple tool doubles as a programming exercise for me, as I attempt to learn Kotlin from my perspective as a Java developer and a (hopefully) useful tool for personal use. I will expand this README with details as the project evolves.
-written in Kotlin and then recently ported to Java.
-
-Usage:
-
-```sh
-java -jar ./waituntil.jar 10:30 ; reboot # Replace reboot with your command
-```
-
-The example above would make the program wait until half past ten AM before exiting and allowing
-the next command to run. The timestamp can be passed in the formats `HH:MM` or `HH:MM:SS` and must
-be in the 24-hour system. Passing dates is not supported but entering a time that has already passed
-will make the software wait until that time on the following day.
-
-## Contributing / Submitting Feedback
-
-The [canonical home of this project](https://gitea.jotoho.de/jotoho/waituntil/) is 
-[on my personal Gitea-instance](https://gitea.jotoho.de/) but since it has registration
-turned off, collaborating there is difficult.
-
-If you have not been given an account on [gitea.jotoho.de](https://gitea.jotoho.de/)
-then you can alternatively send me feedback, bug reports or patches [via email to
-contact@jotoho.de](mailto:contact@jotoho.de).
-Should that fail, there may be alternative ways to contact me listed on
-[my personal website.](https://www.jotoho.de/)
-
-In the future, I may also decide to create a mirror for this project on GitHub, gitlab.com or similar.
 
 ## Copyright / Licensing
 
 ```
 waituntil - a tool for delaying command execution until the specified time
-Copyright (C) 2022 Jonas Tobias Hopusch
+Copyright (C) 2021 Jonas Tobias Hopusch
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU Affero General Public License as

app/build.gradle.kts

@@ -0,0 +1,55 @@
+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ * This generated file contains a sample Kotlin application project to get you started.
+ * For more details take a look at the 'Building Java & JVM projects' chapter in the Gradle
+ * User Manual available at https://docs.gradle.org/7.2/userguide/building_java_projects.html
+ */
+
+plugins {
+    // Apply the org.jetbrains.kotlin.jvm Plugin to add support for Kotlin.
+    id("org.jetbrains.kotlin.jvm") version "1.+"
+
+    // Apply the application plugin to add support for building a CLI application in Java.
+    application
+}
+
+repositories {
+    // Use Maven Central for resolving dependencies.
+    mavenCentral()
+}
+
+dependencies {
+    // Align versions of all Kotlin components
+    implementation(platform("org.jetbrains.kotlin:kotlin-bom"))
+
+    // Use the Kotlin JDK 8 standard library.
+    implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
+
+    // This dependency is used by the application.
+    implementation("com.google.guava:guava:30.1.1-jre")
+
+    // Use the Kotlin test library.
+    testImplementation("org.jetbrains.kotlin:kotlin-test")
+
+    // Use the Kotlin JUnit integration.
+    testImplementation("org.jetbrains.kotlin:kotlin-test-junit")
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_16
+    targetCompatibility = JavaVersion.VERSION_16
+}
+
+tasks {
+    compileKotlin {
+        kotlinOptions {
+            jvmTarget = "16"
+        }
+    }
+}
+
+application {
+    // Define the main class for the application.
+    mainClass.set("de.jotoho.waituntil.StartKt")
+}

app/src/main/kotlin/de/jotoho/waituntil/start.kt

@@ -0,0 +1,101 @@
+package de.jotoho.waituntil
+
+import java.util.Locale
+import java.time.format.DateTimeFormatter
+import java.time.format.FormatStyle
+import java.util.TimeZone
+import java.time.Instant
+import java.time.LocalTime
+import java.time.LocalDate
+import java.time.ZonedDateTime
+import java.time.temporal.ChronoUnit
+
+// This file contains the main function and other utility function necessary for interpreting the terminal arguments.
+// See README.md and LICENSE.md for license information
+// Author: Jonas Tobias Hopusch (@jotoho)
+
+val langGerman: String = Locale.GERMAN.getLanguage();
+val applicationOutputLanguage: String = if (Locale.getDefault().getLanguage().equals(Locale.GERMAN.getLanguage()))
+                                    Locale.GERMAN.getLanguage()
+                                    else Locale.ENGLISH.getLanguage();
+
+fun waitUntilTimeStamp(timestamp: ZonedDateTime) {
+    Thread.sleep(
+        Math.max(Instant.now().until(timestamp, ChronoUnit.MILLIS), 0)
+        );
+
+    val formattedTimeStamp: String = DateTimeFormatter.ofLocalizedDateTime(FormatStyle.LONG)
+                                        .withZone(TimeZone.getDefault().toZoneId())
+                                        .format(Instant.now());
+
+    when (applicationOutputLanguage) {
+        langGerman -> System.err.println("Erfolgreich bis $formattedTimeStamp gewartet!");
+        else -> {
+            System.err.println("Successfully waited until $formattedTimeStamp");
+        }
+    }
+}
+
+fun calculateAndAnnounceTargetTime(userTimeInputRaw: String): ZonedDateTime {
+    val userTimeInputRelative = LocalTime.parse(userTimeInputRaw);
+    val userTimeInputAbsolute = ZonedDateTime.of(LocalDate.now(), userTimeInputRelative, TimeZone.getDefault().toZoneId());
+
+    val userTimeInputFinal = if (Instant.now().isBefore(userTimeInputAbsolute.toInstant())) userTimeInputAbsolute else userTimeInputAbsolute.plusDays(1);
+
+    val formattedTimeStamp = userTimeInputFinal.format(
+        DateTimeFormatter.ofLocalizedDateTime(FormatStyle.LONG)
+    );
+
+    when (applicationOutputLanguage) {
+        langGerman -> System.err.println("Dieses Program wird bis zum $formattedTimeStamp warten.");
+        else -> {
+            println("WaitUntil will suspend until $formattedTimeStamp");
+        }
+    }
+
+    return userTimeInputFinal;
+}
+
+fun main(args: Array<String>) {
+    val optionDictionary = mapOf(Pair("-h", "--help"));
+
+    val options = HashSet<String>();
+    val words = HashSet<String>();
+
+    for (arg in args) {
+        if (arg.startsWith("--")) {
+            options.add(arg.substring(startIndex=2))
+        }
+        else if (arg.startsWith('-')) {
+            val translation = optionDictionary.get(arg);
+            if (translation != null)
+                options.add(translation.substring(startIndex=2));
+            else
+                System.err.println("Short-hand '$arg' does not exist. Ignoring!");
+        }
+        else
+            words.add(arg);
+    }
+
+    if (options.contains("help")) {
+        when (applicationOutputLanguage) {
+            langGerman -> println("Hilfe kommt noch. (Nicht implementiert)");
+            else -> {
+                println("Help is yet to come. (Not implemented)");
+            }
+        }
+    }
+    else if (words.size == 1) {
+        val target = calculateAndAnnounceTargetTime(words.iterator().next());
+        waitUntilTimeStamp(target);
+    }
+    else {
+        when (applicationOutputLanguage) {
+            langGerman -> System.err.println("FATAL: Es wurde exact ein nicht-flag Argument erwartet. (${words.size} erhalten)");
+            else -> {
+                System.err.println("FATAL: Expected one non-flag argument. (Got ${words.size})");
+            }
+        }
+        System.exit(1);
+    }
+}

app/src/test/kotlin/waituntil/AppTest.kt

@@ -0,0 +1,14 @@
+/*
+ * This Kotlin source file was generated by the Gradle 'init' task.
+ */
+package de.jotoho.waituntil
+
+import kotlin.test.Test
+import kotlin.test.assertNotNull
+
+class AppTest {
+    @Test fun appHasAGreeting() {
+        val classUnderTest = App()
+        assertNotNull(classUnderTest.greeting, "app should have a greeting")
+    }
+}

build.gradle.kts

@@ -1,53 +0,0 @@
-import java.io.ByteArrayOutputStream
-import java.io.OutputStream
-
-plugins {
-    // Apply the application plugin to add support for building a CLI application in Java.
-    application
-    java
-
-    id("com.github.johnrengelman.shadow") version "7.1.2"
-}
-
-repositories {
-    // Use Maven Central for resolving dependencies.
-    mavenCentral()
-}
-
-dependencies {
-    implementation(group = "commons-cli", name = "commons-cli", version = "1.5.0")
-}
-
-fun versionBanner(): String {
-    val os = ByteArrayOutputStream()
-    project.exec {
-        commandLine = "git describe --tags --always --dirty --abbrev".split(" ")
-        standardOutput = os
-        errorOutput = OutputStream.nullOutputStream()
-    }
-    return String(os.toByteArray()).trim()
-}
-
-group = "de.jotoho"
-version = versionBanner()
-
-java {
-    sourceCompatibility = JavaVersion.VERSION_17
-    targetCompatibility = JavaVersion.VERSION_17
-}
-
-tasks.jar {
-    manifest {
-        attributes("Implementation-Title" to project.name,
-                   "Implementation-Version" to project.version,
-                   "Main-Class" to "de.jotoho.waituntil.Main"
-            //"Main-Module" to "de.jotoho.waituntil.main"
-        )
-    }
-}
-
-application {
-    // Define the main class for the application.
-    mainClass.set("de.jotoho.waituntil.Main")
-    //mainModule.set("de.jotoho.waituntil.main")
-}

compile.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+kotlinc app/src/main/kotlin/de/jotoho/waituntil/start.kt -jvm-target 16 -include-runtime -d waituntil.jar

gradle/wrapper/gradle-wrapper.properties

@@ -1 +0,0 @@
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-bin.zip

run.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+java -jar waituntil.jar $*

settings.gradle.kts

@@ -7,4 +7,5 @@
  * in the user manual at https://docs.gradle.org/7.2/userguide/multi_project_builds.html
  */
 
-rootProject.name = "waituntil"
+rootProject.name = "de.jotoho.waituntil"
+include("app")

src/main/java/de/jotoho/waituntil/AppOptions.java

@@ -1,39 +0,0 @@
-package de.jotoho.waituntil;
-
-/*
-    waituntil - a tool for delaying command execution until the specified time
-    Copyright (C) 2022 Jonas Tobias Hopusch
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Affero General Public License as
-    published by the Free Software Foundation, either version 3 of the
-    License, or (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU Affero General Public License for more details.
-
-    You should have received a copy of the GNU Affero General Public License
-    along with this program.  If not, see <https://www.gnu.org/licenses/>.
-*/
-
-import org.apache.commons.cli.Option;
-import org.apache.commons.cli.Options;
-
-final class AppOptions {
-    public final Option help = Option.builder()
-                                     .argName("h")
-                                     .longOpt("help")
-                                     .desc("Shows this help message and exits")
-                                     .build();
-
-    public final Option version = Option.builder()
-                                        .argName("v")
-                                        .longOpt("version")
-                                        .desc("Shows version information and exits")
-                                        .build();
-
-    public final Options options = new Options().addOption(help)
-                                                .addOption(version);
-}

src/main/java/de/jotoho/waituntil/GlobalConf.java

@@ -1,30 +0,0 @@
-package de.jotoho.waituntil;
-
-/*
-    waituntil - a tool for delaying command execution until the specified time
-    Copyright (C) 2022 Jonas Tobias Hopusch
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Affero General Public License as
-    published by the Free Software Foundation, either version 3 of the
-    License, or (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU Affero General Public License for more details.
-
-    You should have received a copy of the GNU Affero General Public License
-    along with this program.  If not, see <https://www.gnu.org/licenses/>.
-*/
-
-import java.util.Locale;
-
-public record GlobalConf() {
-    public static final String langGerman = "de";
-    public static final String applicationOutputLanguage = (Locale.getDefault()
-                                                                  .getLanguage()
-                                                                  .equals(Locale.GERMAN.getLanguage()))
-                                                           ? Locale.GERMAN.getLanguage()
-                                                           : Locale.ENGLISH.getLanguage();
-}

src/main/java/de/jotoho/waituntil/Main.java

@@ -1,115 +0,0 @@
-package de.jotoho.waituntil;
-
-/*
-    waituntil - a tool for delaying command execution until the specified time
-    Copyright (C) 2022 Jonas Tobias Hopusch
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Affero General Public License as
-    published by the Free Software Foundation, either version 3 of the
-    License, or (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU Affero General Public License for more details.
-
-    You should have received a copy of the GNU Affero General Public License
-    along with this program.  If not, see <https://www.gnu.org/licenses/>.
-*/
-
-import org.apache.commons.cli.CommandLine;
-import org.apache.commons.cli.DefaultParser;
-import org.apache.commons.cli.Options;
-import org.apache.commons.cli.ParseException;
-
-import static de.jotoho.waituntil.GlobalConf.applicationOutputLanguage;
-import static java.lang.System.Logger.Level;
-
-// This file contains the main function and other utility function necessary
-// for interpreting the terminal arguments.
-// See README.md and LICENSE.md for license information
-// Author: Jonas Tobias Hopusch (@jotoho)
-
-public final class Main {
-    private static final System.Logger logger = System.getLogger("main");
-
-    private static void printVersionInformation() {
-        final var thisPackage = Main.class.getPackage();
-        final var appVersion = thisPackage.getImplementationVersion() != null
-                               ? thisPackage.getImplementationVersion()
-                               : "version unknown";
-
-        System.out.println("waituntil " + appVersion);
-        System.out.println("""
-                           Project Repository: https://gitea.jotoho.de/jotoho/waituntil
-
-                           This program is free software: you can redistribute it and/or modify it under the terms of the
-                           GNU General Public License as published by the Free Software Foundation, either version 3 of the
-                           License, or (at your option) any later version.
-
-                           This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
-                           without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-                           See the GNU General Public License for more details.""");
-    }
-
-    private static void printHelpInformation() {
-        switch (applicationOutputLanguage) {
-            case GlobalConf.langGerman -> logger.log(Level.ERROR,
-                                                     "Hilfe kommt noch. (Nicht " +
-                                                     "implementiert)");
-            default -> logger.log(Level.ERROR, "Help is yet to come. (Not implemented)");
-        }
-    }
-
-    private static CommandLine parseArgs(final Options options, final String[] args)
-        throws ParseException {
-        return DefaultParser.builder()
-                            .setStripLeadingAndTrailingQuotes(true)
-                            .build()
-                            .parse(options, args);
-    }
-
-    public synchronized static void main(final String[] args) {
-        // Retrieve defined CLI options
-        final var appOptions = new AppOptions();
-
-        try {
-            // Parse CLI
-            final var parsedArguments = parseArgs(appOptions.options, args);
-            final var userData = parsedArguments.getArgs();
-
-            // Differentiate between usage scenarios
-            if (parsedArguments.hasOption(appOptions.help)) {
-                printHelpInformation();
-            } else if (parsedArguments.hasOption(appOptions.version)) {
-                printVersionInformation();
-            } else if (userData.length == 0) {
-                switch (applicationOutputLanguage) {
-                    case GlobalConf.langGerman -> logger.log(Level.ERROR,
-                                                             "Es wurde keine Uhrzeit " +
-                                                             "angegeben.");
-                    default -> logger.log(Level.ERROR, "No target time was provided.");
-                }
-                System.exit(1);
-            } else if (userData.length > 1) {
-                switch (applicationOutputLanguage) {
-                    case GlobalConf.langGerman -> logger.log(Level.ERROR,
-                                                             "Zu viele Argumente " +
-                                                             "wurden angegeben.");
-                    default -> logger.log(Level.ERROR, "Too many arguments provided.");
-                }
-                System.exit(1);
-            } else {
-                final var target = TimeCalculator.calculateAndAnnounceTargetTime(userData[0]);
-                Sleep.waitUntilTimeStamp(target);
-            }
-        } catch (final ParseException e) {
-            System.getLogger("main")
-                  .log(Level.ERROR,
-                       "Parsing of arguments failed and the program cannot continue.",
-                       e);
-            System.exit(1);
-        }
-    }
-}

src/main/java/de/jotoho/waituntil/Sleep.java

@@ -1,53 +0,0 @@
-package de.jotoho.waituntil;
-
-/*
-    waituntil - a tool for delaying command execution until the specified time
-    Copyright (C) 2022 Jonas Tobias Hopusch
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Affero General Public License as
-    published by the Free Software Foundation, either version 3 of the
-    License, or (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU Affero General Public License for more details.
-
-    You should have received a copy of the GNU Affero General Public License
-    along with this program.  If not, see <https://www.gnu.org/licenses/>.
-*/
-
-import java.time.Instant;
-import java.time.ZonedDateTime;
-import java.time.format.DateTimeFormatter;
-import java.time.format.FormatStyle;
-import java.time.temporal.ChronoUnit;
-import java.util.TimeZone;
-
-import static java.lang.System.Logger.Level;
-
-public final class Sleep {
-    public static void waitUntilTimeStamp(ZonedDateTime timestamp) {
-        try {
-            Thread.sleep(Math.max(0,
-                                  Instant.now()
-                                         .until(timestamp, ChronoUnit.MILLIS)));
-        } catch (final InterruptedException ignored) {
-        }
-
-        final String formattedTimeStamp = DateTimeFormatter.ofLocalizedDateTime(FormatStyle.LONG)
-                                                           .withZone(TimeZone.getDefault()
-                                                                             .toZoneId())
-                                                           .format(Instant.now());
-
-        final String msg = switch (GlobalConf.applicationOutputLanguage) {
-            case GlobalConf.langGerman -> "Erfolgreich bis %s gewartet!";
-            default -> "Successfully waited until %s";
-        };
-
-        final String msgWithData = msg.formatted(formattedTimeStamp);
-        System.getLogger("sleep")
-              .log(Level.INFO, msgWithData);
-    }
-}

src/main/java/de/jotoho/waituntil/TimeCalculator.java

@@ -1,58 +0,0 @@
-package de.jotoho.waituntil;
-
-/*
-    waituntil - a tool for delaying command execution until the specified time
-    Copyright (C) 2022 Jonas Tobias Hopusch
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Affero General Public License as
-    published by the Free Software Foundation, either version 3 of the
-    License, or (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU Affero General Public License for more details.
-
-    You should have received a copy of the GNU Affero General Public License
-    along with this program.  If not, see <https://www.gnu.org/licenses/>.
-*/
-
-import java.time.Instant;
-import java.time.LocalDate;
-import java.time.LocalTime;
-import java.time.ZonedDateTime;
-import java.time.format.DateTimeFormatter;
-import java.time.format.FormatStyle;
-import java.util.TimeZone;
-
-import static java.lang.System.Logger.Level;
-
-public final class TimeCalculator {
-
-    public static ZonedDateTime calculateAndAnnounceTargetTime(final String userTimeInputRaw) {
-        final var userTimeInputRelative = LocalTime.parse(userTimeInputRaw);
-        final var userTimeInputAbsolute = ZonedDateTime.of(LocalDate.now(),
-                                                           userTimeInputRelative,
-                                                           TimeZone.getDefault()
-                                                                   .toZoneId());
-
-        final var userTimeInputFinal = (Instant.now()
-                                               .isBefore(userTimeInputAbsolute.toInstant()))
-                                       ? userTimeInputAbsolute
-                                       : userTimeInputAbsolute.plusDays(1);
-
-        final var formattedTimeStamp =
-            userTimeInputFinal.format(DateTimeFormatter.ofLocalizedDateTime(FormatStyle.LONG));
-
-        final String msg = switch (GlobalConf.applicationOutputLanguage) {
-            case GlobalConf.langGerman -> ("Dieses Program wird bis zum %s warten.").formatted(
-                formattedTimeStamp);
-            default -> "WaitUntil will suspend until %s".formatted(formattedTimeStamp);
-        };
-        System.getLogger("timecalculator")
-              .log(Level.INFO, msg);
-
-        return userTimeInputFinal;
-    }
-}