Merge pull request 'Update AlertCommand' (#372) from CommandAlert into master

Reviewed-on: SteamWar/BungeeCore#372
Reviewed-by: Lixfel <lixfel@steamwar.de>

src/de/steamwar/bungeecore/commands/AlertCommand.java

@@ -21,49 +21,28 @@ package de.steamwar.bungeecore.commands;
 
 import de.steamwar.bungeecore.Message;
 import de.steamwar.bungeecore.bot.SteamwarDiscordBot;
+import de.steamwar.command.SWCommand;
+import de.steamwar.messages.ChatSender;
 import net.md_5.bungee.api.ChatColor;
 import net.md_5.bungee.api.CommandSender;
 
-public class AlertCommand extends BasicCommand {
+public class AlertCommand extends SWCommand {
 
     public AlertCommand() {
         super("alert", "bungeecore.alert", "broadcast", "bbc");
     }
 
-    @Override
-    public void execute(CommandSender sender, String[] args) {
-        if(args.length == 0){
-            Message.send("USAGE_ALERT", sender);
+    @Register(description = "USAGE_ALERT")
+    public void broadcast(CommandSender sender, @OptionalValue("") @StaticValue("-discord") String sendToDiscord, String... message) {
+        if (message.length == 0) {
+            ChatSender.of(sender).system(new Message("USAGE_ALERT"));
             return;
         }
 
-        String s;
-        boolean discordAnnounce = false;
-        if (args[0].equals("-discord")) {
-            if (args.length == 1) {
-                Message.send("USAGE_ALERT", sender);
-                return;
-            }
-            discordAnnounce = true;
-            s = join(1, args);
-        } else {
-            s = join(0, args);
-        }
-
+        String s = String.join(" ", message);
         Message.broadcast("ALERT", ChatColor.translateAlternateColorCodes('&', s));
-        if (discordAnnounce && SteamwarDiscordBot.instance() != null) {
+        if ("-discord".equals(sendToDiscord) && SteamwarDiscordBot.instance() != null) {
             SteamwarDiscordBot.instance().getAnnouncementListener().announce(s);
         }
     }
-
-    private String join(int startIndex, String... strings) {
-        StringBuilder st = new StringBuilder();
-        for (int i = startIndex; i < strings.length; i++) {
-            if (i != startIndex) {
-                st.append(" ");
-            }
-            st.append(strings[i]);
-        }
-        return st.toString();
-    }
 }