bonzo-timer_1.8.9/src/main/java/xyz/stachel/bonzotimer/ChatHandler.java

package xyz.stachel.bonzotimer;

import net.minecraft.client.Minecraft;
import net.minecraft.event.ClickEvent;
import net.minecraft.util.ChatComponentText;
import net.minecraft.util.ChatStyle;
import net.minecraft.util.EnumChatFormatting;
import net.minecraftforge.client.event.ClientChatReceivedEvent;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
import org.jetbrains.annotations.NotNull;
import net.minecraftforge.fml.common.gameevent.TickEvent;

import java.util.HashMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ChatHandler {
  private static final String IGN_PATTERN = "([a-zA-Z0-9_]{2,16})";
  private static final String PLAYER_PATTERN = "(?:\\[(?:VIP\\+?|MVP\\+{0,2}|YOUTUBE|MOD|ADMIN)\\] )?" + IGN_PATTERN;
  private static final Pattern PARTY_PATTERN = Pattern.compile("Party > " + PLAYER_PATTERN + ": (.*)");
  private static final Pattern TRANSFER_PATTERN = Pattern.compile("The party was transferred to " + PLAYER_PATTERN +" by " + PLAYER_PATTERN);
  private static final Pattern TRANSFER_LEAVE_PATTERN = Pattern.compile("The party was transferred to " + PLAYER_PATTERN + " because " + PLAYER_PATTERN + "left");
  private static final Pattern PROMOTE_PATTERN = Pattern.compile(PLAYER_PATTERN + " has promoted " + PLAYER_PATTERN + " to Party Leader");
  private static final Pattern LEAVE_PATTERN = Pattern.compile(PLAYER_PATTERN + " has left the party.");
  private static final Pattern LEAP_PATTERN = Pattern.compile("You have teleported to " + IGN_PATTERN + "!");
  private int transferCountdown = 0;
  private boolean autotransferEnabled = false;
  private String oldLeader = null;
  private HashMap<String, Byte> rejoiners = new HashMap<>();

  public void setTransferEnabled(boolean b) {
    this.autotransferEnabled = b;
  }

  @SubscribeEvent
  public void onTick(TickEvent.@NotNull ClientTickEvent event) {
    if (transferCountdown > 1) {
      transferCountdown--;
    } else if (transferCountdown == 1 && Minecraft.getMinecraft().thePlayer != null && this.oldLeader != null) {
      transferCountdown--;
      Minecraft.getMinecraft().thePlayer.sendChatMessage("/p transfer " + this.oldLeader);
    }

    rejoiners.replaceAll((k, v) -> v > 0 ? (byte)(v - 1) : v);
  }

  @SubscribeEvent
  public void onChatReceived(@NotNull ClientChatReceivedEvent event) {
    if (event.type == 2) return;
    final String strippedMessage = event.message.getUnformattedText().replaceAll("§[0-9a-fklmnor]", "").trim();

branched: {

literal: switch (strippedMessage) {
           case "Your Bonzo's Mask saved your life!":
           case "Your ⚚ Bonzo's Mask saved your life!":
             Timer.setInstance(new Timer((byte) 60));
             Minecraft.getMinecraft().thePlayer.sendChatMessage("Bonzo's Mask popped (3s)");
             break branched;
           case "Second Wind Activated! Your Spirit Mask saved your life!":
           case "Second Wind Activated! Your ⚚ Spirit Mask saved your life!":
             Timer.setInstance(new Timer((byte) 60));
             Minecraft.getMinecraft().thePlayer.sendChatMessage("Spirit Mask popped (3s)");
             break branched;
           case "Your Phoenix Pet saved you from certain death!":
             Timer.setInstance(new Timer((byte) 60));
             Minecraft.getMinecraft().thePlayer.sendChatMessage("Phoenix pet popped (3s)");
             break branched;
           default:
             break literal;
         };

         if (autotransferEnabled) {
           final Matcher transfer = TRANSFER_PATTERN.matcher(strippedMessage);
           final Matcher promote = PROMOTE_PATTERN.matcher(strippedMessage);
           String newLeader = "";
           if (transfer.matches()) {
             this.oldLeader = transfer.group(2);
             newLeader = transfer.group(1);
           } else if (promote.matches()) {
             this.oldLeader = promote.group(1);
             newLeader = promote.group(2);
           }

           if (!newLeader.isEmpty() && newLeader.equals(Minecraft.getMinecraft().thePlayer.getName())) {
             this.transferCountdown = 10;
             break branched;
           }
         }

         final Matcher partyChat = PARTY_PATTERN.matcher(strippedMessage);
         if (partyChat.matches()) {
           final String partyMessage = partyChat.group(2);
           final String user = partyChat.group(1);
           switch (partyMessage) {
             case "!warp":
             case "!w":
               Minecraft.getMinecraft().thePlayer.sendChatMessage("/p warp");
               break branched;
             case "!help":
               Minecraft.getMinecraft().thePlayer.sendChatMessage("Commands: !warp, !m7, !f7, !ptme, !allinv, !reinv");
               break branched;
             case "!m7":
               Minecraft.getMinecraft().thePlayer.sendChatMessage("/joindungeon master_catacombs_floor_seven");
               break branched;
             case "!f7":
               Minecraft.getMinecraft().thePlayer.sendChatMessage("/joindungeon catacombs_floor_seven");
               break branched;
             case "!allinvite":
             case "!allinv":
               Minecraft.getMinecraft().thePlayer.sendChatMessage("/p settings allinvite");
               break branched;
             case "!reinv":
               rejoiners.put(user, (byte) 100);
               break branched;
             case "!ptme":
             case "!pt":
               event.message.appendSibling(
                   new ChatComponentText(" [ACCEPT]")
                   .setChatStyle(new ChatStyle()
                     .setChatClickEvent(new ClickEvent(ClickEvent.Action.RUN_COMMAND, "/p transfer " + user))
                     .setColor(EnumChatFormatting.RED).setBold(true))
                   );
               break branched;
             case "?m7":
               Minecraft.getMinecraft().thePlayer.sendChatMessage("Please select the MAGE or BERSERK dungeon class and stay with the tank while trying to reach MILESTONE 3. After reaching milestone 3, please run /hub, you will be warped back later! :D");
               break branched;
             case "?help":
               Minecraft.getMinecraft().thePlayer.sendChatMessage("Helper messages: ?m7");
               break branched;
           }
         }


         final Matcher leave = LEAVE_PATTERN.matcher(strippedMessage);
         if (leave.matches()) {
           final String leaver = leave.group(1).trim();
           if (rejoiners.getOrDefault(leaver, (byte) 0) != 0) {
             Minecraft.getMinecraft().thePlayer.sendChatMessage("/party invite " + leaver);
           }
           break branched;
         };

         final Matcher tansLeave = TRANSFER_LEAVE_PATTERN.matcher(strippedMessage);
         if (transLeave.matches()) {
           final String leaver = transLeave.group(2).trim();
           if (rejoiners.getOrDefault(leaver, (byte) 0) != 0) {
             Minecraft.getMinecraft().thePlayer.sendChatMessage("/party invite " + leaver);
           }
           break branched;
         };

         final Matcher leap = LEAP_PATTERN.matcher(strippedMessage);
         if (leap.matches()) {
           final String target = leap.group(1).trim();
           Minecraft.getMinecraft().thePlayer.sendChatMessage("Gonna touch " + target + ".");
           break branched;
         }
         };
  };
}