added playertime command

src/main/java/eu/mhsl/craftattack/spawn/appliances/playtime/Playtime.java

@@ -0,0 +1,31 @@
+package eu.mhsl.craftattack.spawn.appliances.playtime;
+
+import eu.mhsl.craftattack.spawn.appliance.Appliance;
+import eu.mhsl.craftattack.spawn.appliance.ApplianceCommand;
+import eu.mhsl.craftattack.spawn.util.text.DataSizeConverter;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.NamedTextColor;
+import net.kyori.adventure.util.Ticks;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.Statistic;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+import java.util.Objects;
+
+public class Playtime extends Appliance {
+    public Component getFormattedPlayerTime(OfflinePlayer player){
+        int playtimeInTicks = player.getStatistic(Statistic.PLAY_ONE_MINUTE);
+        String playtime = DataSizeConverter.formatSecondsToHumanReadable(playtimeInTicks / Ticks.TICKS_PER_SECOND);
+        return Component.text()
+            .append(Component.text("Der Spieler ", NamedTextColor.GRAY))
+            .append(Component.text(Objects.requireNonNull(player.getName())))
+            .append(Component.text(" hat eine Spielzeit von ", NamedTextColor.GRAY))
+            .append(Component.text(playtime, NamedTextColor.GOLD))
+            .build();
+    }
+    @Override
+    protected @NotNull List<ApplianceCommand<?>> commands() {
+        return List.of(new PlaytimeCommand());
+    }
+}

src/main/java/eu/mhsl/craftattack/spawn/appliances/playtime/PlaytimeCommand.java

@@ -0,0 +1,31 @@
+package eu.mhsl.craftattack.spawn.appliances.playtime;
+
+import eu.mhsl.craftattack.spawn.appliance.ApplianceCommand;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.NamedTextColor;
+import org.bukkit.Bukkit;
+import org.bukkit.OfflinePlayer;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+
+public class PlaytimeCommand extends ApplianceCommand.PlayerChecked<Playtime> {
+    public PlaytimeCommand() {
+        super("playtime");
+    }
+
+    @Override
+    protected void execute(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) throws Exception {
+        String playerName = getPlayer().getName();
+        if(args.length == 1) {
+            playerName = args[0];
+        }
+
+        OfflinePlayer player = Bukkit.getOfflinePlayer(playerName);
+        if (!player.hasPlayedBefore()) {
+            sender.sendMessage(Component.text("Der Spieler existiert nicht!", NamedTextColor.RED));
+            return;
+        }
+        sender.sendMessage(getAppliance().getFormattedPlayerTime(player));
+    }
+}

src/main/java/eu/mhsl/craftattack/spawn/util/text/DataSizeConverter.java

@@ -38,4 +38,18 @@ public class DataSizeConverter {
         hours %= 60;
         return String.format("%dd%dh%dm%ds", days, hours, minutes, seconds);
     }
+
+    public static String formatSecondsToHumanReadable(int seconds) {
+        if (seconds < 0) return "unsupported";
+
+        int minutes = seconds / 60;
+        int hours = minutes / 60;
+        int days = hours / 24;
+
+        seconds %= 60;
+        minutes %= 60;
+        hours %= 60;
+
+        return String.format("%dd %dh %dm %ds", days, hours, minutes, seconds);
+    }
 }

src/main/resources/plugin.yml

@@ -42,3 +42,4 @@ commands:
   yearRank:
   msg:
   r:
+  playtime: