Revamped in-game Discord mention system.

Signed-off-by: DroppingAnvil <dr0pping.4nvi1@gmail.com>

src/main/java/com/massivecraft/factions/discord/FactionChatHandler.java

@@ -58,12 +58,37 @@ public class FactionChatHandler extends ListenerAdapter {
         } else {
             webhookClient = textChannel.createWebhook(Conf.webhookName).complete().newClient().build();
         }
-        if (message.contains("@")) {
+        if (message.contains("@") && message.contains("#")) {
             List<String> x = new ArrayList<>(Arrays.asList(message.split(" ")));
             for (String y : x) {
-                if (y.contains("@")) {
+                if (y.contains("@") && y.contains("#")) {
-                    if (!Discord.jda.getUsersByName(y.replace("@", ""), false).isEmpty() && Discord.jda.getUsersByName(y.replace("@", ""), false).size() < 2) {
+                    String[] target = y.replace("@", "").split("#");
-                        x.set(x.indexOf(y), Discord.jda.getUsersByName(y.replace("@", ""), false).get(0).getAsMention());
+                    for (User u : Discord.jda.getUsersByName(target[0], false)) {
+                        if (u.getDiscriminator().equals(target[1])) {
+                            x.set(x.indexOf(y), u.getAsMention());
+                        }
+                    }
+                } else if (y.contains("@")) {
+                    List<Integer> ii = new ArrayList<>();
+                    int i = x.indexOf(y);
+                    String mention = "";
+                    while (i <= x.size() - 1) {
+                        mention = mention + " " + x.get(i);
+                        ii.add(i);
+                        if (mention.contains("#")) {break;}
+                        i++;
+                    }
+                    if (mention.contains("#")) {
+                        String[] mentionA = mention.replace(" @", "").split("#");
+
+                        for (User u : Discord.jda.getUsersByName(mentionA[0], false)) {
+                            if (u.getDiscriminator().equals(mentionA[1])) {
+                                for (Integer l : ii) {
+                                    x.set(l, "");
+                                }
+                                x.set(ii.get(0), u.getAsMention());
+                            }
+                        }
                     }
                 }
             }

src/main/java/com/massivecraft/factions/listeners/FactionsPlayerListener.java

@@ -5,6 +5,7 @@ import com.massivecraft.factions.cmd.CmdFGlobal;
 import com.massivecraft.factions.cmd.CmdFly;
 import com.massivecraft.factions.cmd.CmdSeeChunk;
 import com.massivecraft.factions.cmd.logout.LogoutHandler;
+import com.massivecraft.factions.discord.Discord;
 import com.massivecraft.factions.event.FPlayerEnteredFactionEvent;
 import com.massivecraft.factions.event.FPlayerJoinEvent;
 import com.massivecraft.factions.event.FPlayerLeaveEvent;
@@ -26,6 +27,9 @@ import com.massivecraft.factions.zcore.util.TagUtil;
 import com.massivecraft.factions.zcore.util.TextUtil;
 import net.coreprotect.CoreProtect;
 import net.coreprotect.CoreProtectAPI;
+import net.dv8tion.jda.core.entities.Member;
+import net.dv8tion.jda.core.entities.TextChannel;
+import net.dv8tion.jda.core.entities.User;
 import org.bukkit.*;
 import org.bukkit.block.Block;
 import org.bukkit.entity.Player;
@@ -1024,9 +1028,51 @@ public class FactionsPlayerListener implements Listener {
             }
         }
     }
+
     @EventHandler
     public void onDisconnect(PlayerQuitEvent e) {
         FPlayer fPlayer = FPlayers.getInstance().getByPlayer(e.getPlayer());
         if (fPlayer.isInFactionsChest()) fPlayer.setInFactionsChest(false);
     }
+
+    @EventHandler
+    public void onTab(PlayerChatTabCompleteEvent e) {
+        if (!Discord.useDiscord) {
+            return;
+        }
+        String[] msg = e.getChatMessage().split(" ");
+        if (msg.length == 0 | !msg[msg.length - 1].contains("@")) {
+            return;
+        }
+        FPlayer fp = FPlayers.getInstance().getByPlayer(e.getPlayer());
+        if (fp == null | fp.getChatMode() != ChatMode.FACTION) {
+            return;
+        }
+        Faction f = fp.getFaction();
+        if (f == null | f.isSystemFaction()) {
+            return;
+        }
+        if (f.getGuildId() == null | f.getFactionChatChannelId() == null) {
+            return;
+        }
+        if (Discord.jda.getGuildById(f.getGuildId()) == null | Discord.jda.getGuildById(f.getGuildId()).getTextChannelById(f.getFactionChatChannelId()) == null) {
+            return;
+        }
+        TextChannel t = Discord.jda.getGuildById(f.getGuildId()).getTextChannelById(f.getFactionChatChannelId());
+        String target = msg[msg.length - 1].replace("@", "");
+        List<String> targets = new ArrayList<>();
+        if (target.equals("")) {
+            for (Member m : t.getMembers()) {
+                targets.add("@" + m.getUser().getName() + "#" + m.getUser().getDiscriminator());
+            }
+        } else {
+            for (Member m : t.getMembers()) {
+                if (m.getEffectiveName().contains(target) | m.getUser().getName().contains(target)){
+                    targets.add("@" + m.getUser().getName() + "#" + m.getUser().getDiscriminator());
+                }
+            }
+        }
+        e.getTabCompletions().clear();
+        e.getTabCompletions().addAll(targets);
+    }
 }