add "/team prefix" command

VelocityCore/src/de/steamwar/messages/BungeeCore.properties

@@ -498,6 +498,13 @@ TEAM_INFO_SW_USAGE = §8/§7team info §8[§eSW§8|§eSteamWar§8]
 TEAM_INFO_SW_HEADER = §eSteam§8War Server Team
 TEAM_INFO_SW_RANK = {0} §7({1})§8: {2}
 
+#TEAM Prefix
+TEAM_PREFIX_USAGE = §8/§7team prefix §8[§eteam§8|§eSW§8]
+TEAM_PREFIX_CURRENT_TEAM = §7Current chat prefix§8: §eTeam
+TEAM_PREFIX_CURRENT_SW = §7Current chat prefix§8: §eSteamWar
+TEAM_PREFIX_SET_TEAM = §7Your chat prefix is now your §eteam prefix§7.
+TEAM_PREFIX_SET_SW = §7Your chat prefix is now your §eSteamWar prefix§7.
+
 #Team List
 TEAM_LIST_NOT_PAGE = §cNo page number entered
 TEAM_LIST_UNKNOWN_PAGE = §cInvalid page entered

VelocityCore/src/de/steamwar/messages/BungeeCore_de.properties

@@ -470,6 +470,13 @@ TEAM_INFO_SW_USAGE = §8/§7team info §8[§eSW§8|§eSteamWar§8]
 TEAM_INFO_SW_HEADER = §eSteam§8War Serverteam
 TEAM_INFO_SW_RANK = {0} §7({1})§8: {2}
 
+#Team Prefix
+TEAM_PREFIX_USAGE = §8/§7team prefix §8[§eteam§8|§eSW§8]
+TEAM_PREFIX_CURRENT_TEAM = §7Aktueller Chatprefix§8: §eTeam
+TEAM_PREFIX_CURRENT_SW = §7Aktueller Chatprefix§8: §eSteamWar
+TEAM_PREFIX_SET_TEAM = §7Dein Chatprefix ist jetzt dein §eTeamprefix§7.
+TEAM_PREFIX_SET_SW = §7Dein Chatprefix ist jetzt dein §eSteamWar-Prefix§7.
+
 #Team List
 TEAM_LIST_NOT_PAGE = §cKeine Seitenzahl angegeben
 TEAM_LIST_UNKNOWN_PAGE = §cUngültige Seitenzahl angegeben

VelocityCore/src/de/steamwar/velocitycore/commands/TeamCommand.java

@@ -47,6 +47,8 @@ import static de.steamwar.persistent.Storage.teamInvitations;
 
 @Linked
 public class TeamCommand extends SWCommand {
+    private static final String PREFIX_MODE_CONFIG = "chatprefix";
+    private static final String PREFIX_MODE_SW = "SW";
 
     public TeamCommand() {
         super("team");
@@ -362,6 +364,39 @@ public class TeamCommand extends SWCommand {
         return "§e";
     }
 
+    @Register(value = "prefix", description = "TEAM_PREFIX_USAGE")
+    public void prefix(@Validator("canUseTeamPrefix") Chatter sender){
+        boolean swPrefix = PREFIX_MODE_SW.equals(UserConfig.getConfig(sender.user().getId(), PREFIX_MODE_CONFIG));
+        sender.system(swPrefix ? "TEAM_PREFIX_CURRENT_SW" : "TEAM_PREFIX_CURRENT_TEAM");
+    }
+
+    @Register(value = "prefix", description = "TEAM_PREFIX_USAGE")
+    public void prefix(@Validator("canUseTeamPrefix") Chatter sender, PrefixMode mode) {
+        if (mode == PrefixMode.SW) {
+            UserConfig.updatePlayerConfig(sender.user().getId(), PREFIX_MODE_CONFIG, PREFIX_MODE_SW);
+            sender.system("TEAM_PREFIX_SET_SW");
+        } else {
+            UserConfig.updatePlayerConfig(sender.user().getId(), PREFIX_MODE_CONFIG, null);
+            sender.system("TEAM_PREFIX_SET_TEAM");
+        }
+    }
+
+    @Validator("canUseTeamPrefix")
+    public TypeValidator<Chatter> canUseTeamPrefixValidator() {
+        return (sender, value, messageSender) -> {
+            SteamwarUser user = value.user();
+
+            return user.hasPerm(UserPerm.TEAM)
+                    && user.getTeam() != 0
+                    && user.prefix() != UserPerm.emptyPrefix;
+        };
+    }
+
+    private enum PrefixMode {
+        TEAM,
+        SW
+    }
+
     @Register("list")
     public void list(Chatter sender, @Min(intValue = 1) @OptionalValue("1") @ErrorMessage("TEAM_LIST_NOT_PAGE") int page) {
         final int TEAMS_PER_PAGE = 10;