Show team on hover for @name mentions

VelocityCore/src/de/steamwar/velocitycore/chat/ChatChannel.java

@@ -129,7 +129,7 @@ public abstract class ChatChannel {
         for (Chatter receiver : receivers.values()) {
             if (!receiver.chatShown()) continue;
 
-            Component msg = format(receiver, sender, coloredMessage);
+            Component msg = ChatFormat.withMentionHovers(receiver, format(receiver, sender, coloredMessage));
             if (icon(receiver) != null) {
                 Component icon = iconComponent(receiver, ChatManager.getDefault(receiver) == this ? "§e" : "§7");
                 msg = Component.text().append(icon).append(Component.text(" ")).append(msg).build();

VelocityCore/src/de/steamwar/velocitycore/chat/ChatFormat.java

@@ -31,13 +31,17 @@ import de.steamwar.velocitycore.network.NetworkSender;
 import de.steamwar.velocitycore.util.SteamwarPrefix;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.TextComponent;
+import net.kyori.adventure.text.TextReplacementConfig;
 import net.kyori.adventure.text.event.HoverEvent;
 
 import java.util.Arrays;
+import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 
 public class ChatFormat {
 
+    private static final Pattern MENTION = Pattern.compile("@(\\w{1,16})");
+
     private ChatFormat() {}
 
     /**
@@ -126,6 +130,19 @@ public class ChatFormat {
         return SteamwarPrefix.usesSWPrefix(user);
     }
 
+    /**
+     * Shows the team of every mentioned player ({@code @name}) on hover, like at the sender name.
+     */
+    public static Component withMentionHovers(Chatter receiver, Component component) {
+        return component.replaceText(TextReplacementConfig.builder()
+                .match(MENTION)
+                .replacement((match, builder) -> {
+                    SteamwarUser user = SteamwarUser.get(match.group(1));
+                    return user == null ? builder : withTeamHover(receiver, user, builder.build());
+                })
+                .build());
+    }
+
     public static String highlightMentions(String message, String returnColor, Chatter player) {
         if (!message.contains("@")) return message;