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package dev.plutorocks;
import net.minecraft.client.MinecraftClient;
import net.minecraft.text.MutableText;
import net.minecraft.text.Text;
import net.minecraft.util.Formatting;
import java.io.*;
import java.net.Socket;
import java.nio.charset.StandardCharsets;
public class IrcClient {
private final String host;
private final int port;
private final String channel;
private final String nick;
private volatile boolean running = false;
private volatile boolean connected = false;
private Socket socket;
private BufferedWriter writer;
public IrcClient(String host, int port, String channel, String nick) {
this.host = host;
this.port = port;
this.channel = channel.startsWith("#") ? channel : "#" + channel;
this.nick = nick;
}
/**
* start the IRC thread.
*/
public void connect() {
if (running) return;
running = true;
Thread thread = new Thread(this::runLoop, "MinecraftIRC-Thread");
thread.setDaemon(true);
thread.start();
}
public boolean isConnected() {
return connected;
}
public void disconnect() {
running = false;
try {
if (socket != null && !socket.isClosed()) {
socket.close();
}
} catch (IOException ignored) {}
connected = false;
}
private void runLoop() {
try (Socket sock = new Socket(host, port);
BufferedReader reader = new BufferedReader(
new InputStreamReader(sock.getInputStream(), StandardCharsets.UTF_8));
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(sock.getOutputStream(), StandardCharsets.UTF_8))) {
this.socket = sock;
this.writer = writer;
this.connected = true;
sendRaw("NICK " + nick);
sendRaw("USER " + nick + " 0 * :" + nick);
sendRaw("JOIN " + channel);
sendClientChat(
Text.literal("[IRC] ").formatted(Formatting.AQUA)
.append(Text.literal("Connected to " + host + " " + channel + " as " + nick)
.formatted(Formatting.GRAY))
);
String line;
while (running && (line = reader.readLine()) != null) {
handleLine(line);
}
if (running) {
sendClientChat(
Text.literal("[IRC] ").formatted(Formatting.AQUA)
.append(Text.literal("Disconnected from server. Use /irc connect to reconnect.")
.formatted(Formatting.GRAY))
);
}
} catch (IOException e) {
sendClientChat(
Text.literal("[IRC] ").formatted(Formatting.AQUA)
.append(Text.literal("Connection error: " + e.getMessage()
+ " (use /irc connect to try again)")
.formatted(Formatting.GRAY))
);
} finally {
connected = false;
running = false;
}
}
private void handleLine(String line) {
// respond to server PINGs
if (line.startsWith("PING")) {
String payload = line.length() > 5 ? line.substring(5) : "";
sendRaw("PONG " + payload);
return;
}
// only care about PRIVMSG
if (!line.contains(" PRIVMSG ")) {
return;
}
int prefixEnd = line.indexOf(' ');
if (!line.startsWith(":") || prefixEnd <= 1) {
return;
}
String prefix = line.substring(1, prefixEnd);
String nick = prefix;
int bang = prefix.indexOf('!');
if (bang != -1) {
nick = prefix.substring(0, bang);
}
String[] split = line.split(" :", 2);
if (split.length < 2) {
return;
}
String trailing = split[1];
String commandPart = split[0];
String[] cmdParts = commandPart.split(" ");
if (cmdParts.length < 3) {
return;
}
String target = cmdParts[2];
if (!target.equalsIgnoreCase(this.channel)
&& !target.equalsIgnoreCase(this.nick)) {
return;
}
MutableText prefixText = Text.literal("[IRC] ")
.formatted(Formatting.AQUA);
MutableText nickText = Text.literal("<" + nick + "> ")
.formatted(Formatting.WHITE);
MutableText msgText = Text.literal(trailing)
.formatted(Formatting.WHITE);
sendClientChat(prefixText.append(nickText).append(msgText));
}
/**
* sends a message to the configured channel
*/
public void sendChannelMessage(String message) {
if (!connected) return;
sendRaw("PRIVMSG " + channel + " :" + message);
}
/**
* low-level raw IRC send
*/
private synchronized void sendRaw(String line) {
if (writer == null) return;
try {
writer.write(line);
writer.write("\r\n");
writer.flush();
} catch (IOException e) {
sendClientChat(
Text.literal("[IRC] ").formatted(Formatting.AQUA)
.append(Text.literal("Send error: " + e.getMessage())
.formatted(Formatting.GRAY))
);
disconnect();
}
}
private void sendClientChat(Text text) {
MinecraftClient client = MinecraftClient.getInstance();
if (client == null) return;
client.execute(() -> {
if (client.inGameHud != null) {
client.inGameHud.getChatHud().addMessage(text);
}
});
}
}
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