jank impl of random player colors

.gitignore

@@ -4,10 +4,7 @@ target/
 !**/src/test/**/target/
 
 ### IntelliJ IDEA ###
-.idea/modules.xml
-.idea/jarRepositories.xml
-.idea/compiler.xml
-.idea/libraries/
+.idea
 *.iws
 *.iml
 *.ipr

src/main/java/cc/fascinated/Aetheria.java

@@ -1,8 +1,8 @@
 package cc.fascinated;
 
 import cc.fascinated.command.CommandManager;
+import cc.fascinated.playercolors.ColorManager;
 import cc.fascinated.worldsize.WorldSizeManager;
-import cc.fascinated.worldsize.impl.WorldSizeCommand;
 import org.bukkit.plugin.java.JavaPlugin;
 
 public class Aetheria extends JavaPlugin {
@@ -22,5 +22,6 @@ public class Aetheria extends JavaPlugin {
     public void onEnable() {
         new CommandManager();
         new WorldSizeManager();
+        new ColorManager();
     }
 }

src/main/java/cc/fascinated/command/CommandManager.java

@@ -2,7 +2,6 @@ package cc.fascinated.command;
 
 import cc.fascinated.Aetheria;
 import cc.fascinated.command.impl.TotalJoinsCommand;
-import org.bukkit.Bukkit;
 
 import java.util.Objects;
 

src/main/java/cc/fascinated/playercolors/ColorManager.java

@@ -0,0 +1,136 @@
+package cc.fascinated.playercolors;
+
+import cc.fascinated.Aetheria;
+import io.papermc.paper.event.player.AsyncChatEvent;
+import it.unimi.dsi.fastutil.HashCommon;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.NamedTextColor;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.event.player.PlayerQuitEvent;
+import org.bukkit.scoreboard.Scoreboard;
+import org.bukkit.scoreboard.Team;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+
+public class ColorManager implements Listener {
+
+    /**
+     * Cache of the chat colors for each player
+     */
+    private final Map<Player, NamedTextColor> chatColors = new HashMap<>();
+
+    /**
+     * List of possible colors that can be randomly picked
+     */
+    private final List<NamedTextColor> validColors = List.of(
+            NamedTextColor.RED,
+            NamedTextColor.GREEN,
+            NamedTextColor.BLUE,
+            NamedTextColor.YELLOW,
+            NamedTextColor.AQUA,
+            NamedTextColor.DARK_AQUA,
+            NamedTextColor.GRAY,
+            NamedTextColor.LIGHT_PURPLE,
+            NamedTextColor.WHITE
+    );
+
+    public ColorManager() {
+        Aetheria.INSTANCE.getServer().getPluginManager().registerEvents(this, Aetheria.INSTANCE);
+
+        Scoreboard scoreboard = Bukkit.getScoreboardManager().getMainScoreboard();
+        for (NamedTextColor color : validColors) {
+            if (scoreboard.getTeam(color.toString().toLowerCase()) != null) {
+                // Unregister the old team
+                Objects.requireNonNull(scoreboard.getTeam(color.toString().toLowerCase())).unregister();
+            }
+            scoreboard.registerNewTeam(color.toString().toLowerCase()).color(color);
+        }
+
+        for (Player player : Bukkit.getOnlinePlayers()) {
+            setChatColor(player);
+        }
+    }
+
+    /**
+     * Gets a random color for the player
+     * based on their uuid
+     *
+     * @param player the player to get the color for
+     * @return the color for the player
+     */
+    private NamedTextColor getColorForPlayer(Player player) {
+        return chatColors.computeIfAbsent(player, (e) -> {
+            int hash = HashCommon.mix(player.getUniqueId().hashCode());
+            int index = HashCommon.mix(hash) & 0xF;
+
+            return validColors.get(index);
+        });
+    }
+
+    /**
+     * Set the color for a player
+     *
+     * @param player the player to set the color for
+     */
+    public void setChatColor(Player player) {
+        Scoreboard scoreboard = Bukkit.getScoreboardManager().getMainScoreboard();
+        Team team = scoreboard.getTeam(getColorForPlayer(player).toString().toLowerCase());
+        if (team == null) {
+            return;
+        }
+        if (team.getEntries().contains(player.getName())) {
+            return;
+        }
+        team.addEntry(player.getName());
+    }
+
+    @EventHandler
+    public void onJoin(PlayerJoinEvent event) {
+        Player player = event.getPlayer();
+
+        setChatColor(player);
+    }
+
+    @EventHandler
+    public void onLeave(PlayerQuitEvent event) {
+        Player player = event.getPlayer();
+
+        Scoreboard scoreboard = Bukkit.getScoreboardManager().getMainScoreboard();
+        Team team = scoreboard.getTeam(getColorForPlayer(player).toString().toLowerCase());
+        if (team == null) {
+            return;
+        }
+        if (!team.getEntries().contains(player.getName())) {
+            return;
+        }
+        team.removeEntry(player.getName());
+        chatColors.remove(player);
+    }
+
+    @EventHandler
+    public void onChat(AsyncChatEvent event) {
+        Player player = event.getPlayer();
+
+        NamedTextColor color = chatColors.get(player);
+        if (color == null) {
+            return;
+        }
+
+        event.renderer((source, sourceDisplayName, message, viewer) -> {
+            return Component.text()
+                    .append(Component.text("<"))
+                    .append(player.displayName().color(color))
+                    .append(Component.text(">"))
+                    .append(Component.space())
+                    .append(message)
+                    .asComponent();
+        });
+    }
+}

src/main/java/cc/fascinated/utils/TimeUtils.java

@@ -4,7 +4,6 @@ import lombok.*;
 import lombok.experimental.UtilityClass;
 import org.jetbrains.annotations.Nullable;
 
-import java.text.SimpleDateFormat;
 import java.util.concurrent.TimeUnit;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;