From 9586cbf9780e6d2ce045ff532f0e49ed10cf4c1a Mon Sep 17 00:00:00 2001
From: ~purplebored <purplebored@posteo.com>
Date: Mon, 5 May 2025 23:16:51 +0200
Subject: [PATCH] Updated the bridge to support multiple servers and chanles

---
 bot.js             | 107 +++++++++++++++++++++++++++------------------
 example.config.xml |  37 +++++++++++-----
 2 files changed, 92 insertions(+), 52 deletions(-)

diff --git a/bot.js b/bot.js
index 2e41047..a85a7b4 100644
--- a/bot.js
+++ b/bot.js
@@ -18,66 +18,89 @@ try {
   process.exit(1);
 }
 
-// Extract configuration
 const DISCORD_TOKEN = config.Discord.Token;
-const DISCORD_CHANNEL_ID = config.Discord.ChannelId;
-const IRC_SERVER = config.IRC.Server;
-const IRC_PORT = parseInt(config.IRC.Port, 10);
-const IRC_CHANNEL = config.IRC.Channel;
-const IRC_NICK = config.IRC.Nick;
+const bridges = Array.isArray(config.Bridges.Bridge)
+? config.Bridges.Bridge
+: [config.Bridges.Bridge];
 
-// Discord client setup
+// Create Discord client
 const discordClient = new Client({
   checkUpdate: false,
   intents: [Intents.FLAGS.GUILDS, Intents.FLAGS.GUILD_MESSAGES]
 });
 
-// IRC client setup
-const ircClient = new irc.Client(IRC_SERVER, IRC_NICK, {
-  channels: [IRC_CHANNEL],
-  port: IRC_PORT,
-  autoConnect: false
-});
+// Map to hold IRC clients and their config
+const ircClients = new Map();
 
-// Function to start IRC connection
-function startIRC() {
-  console.log('Attempting to connect to IRC...');
-  ircClient.connect(5, () => {
-    console.log(`Connected to IRC server ${IRC_SERVER}`);
+// Helper function to create and connect an IRC client for each bridge
+function createIRCClient(bridge) {
+  const ircConfig = bridge.IRC;
+  const discordChannelId = bridge.Discord.ChannelId;
+
+  const server = ircConfig.Server;
+  const port = parseInt(ircConfig.Port, 10);
+  const nick = ircConfig.Nick;
+  const channel = ircConfig.Channel;
+
+  const client = new irc.Client(server, nick, {
+    channels: [channel],
+    port: port,
+    autoConnect: false
   });
+
+  client.on('error', (message) => {
+    console.error(`IRC error on ${server} (${channel}):`, message);
+  });
+
+  client.on('message', (from, to, message) => {
+    // Avoid echoing own messages
+    if (from === nick) return;
+
+    const ircMessage = `<${from}> ${message}`;
+    const discordChannel = discordClient.channels.cache.get(discordChannelId);
+    if (discordChannel) {
+      discordChannel.send(ircMessage).catch(console.error);
+    } else {
+      console.warn(`Discord channel ${discordChannelId} not found.`);
+    }
+  });
+
+  return { client, server, channel, nick, discordChannelId };
 }
 
-// Handle IRC connection errors
-ircClient.addListener('error', (message) => {
-  console.error('IRC error:', message);
-});
+// Initialize all IRC clients
+for (const bridge of bridges) {
+  const { client, server, channel, nick } = createIRCClient(bridge);
+  ircClients.set(client, { server, channel, nick, discordChannelId: bridge.Discord.ChannelId });
+}
 
-// Handle IRC messages and forward them to Discord
-ircClient.addListener('message', (from, to, message) => {
-  console.log(`Received IRC message from ${from}: ${message}`);
-  if (from === IRC_NICK) return;
+// Connect all IRC clients once Discord is ready
+discordClient.once('ready', () => {
+  console.log(`Logged in as ${discordClient.user.tag}`);
 
-  const ircMessage = `<${from}> ${message}`;
-  const discordChannel = discordClient.channels.cache.get(DISCORD_CHANNEL_ID);
-  if (discordChannel) {
-    discordChannel.send(ircMessage);
+  for (const [ircClient, info] of ircClients.entries()) {
+    console.log(`Connecting to IRC server ${info.server} on channel ${info.channel}...`);
+    ircClient.connect(5, () => {
+      console.log(`Connected to IRC server ${info.server} channel ${info.channel}`);
+    });
   }
 });
 
-// Handle Discord messages and forward them to IRC
-discordClient.on('messageCreate', message => {
-  if (message.author.bot || message.channel.id !== DISCORD_CHANNEL_ID) return;
-  if (message.author.id === discordClient.user.id) return;
+// Forward Discord messages to corresponding IRC channel
+discordClient.on('messageCreate', (message) => {
+  if (message.author.bot) return;
 
-  const discordMessage = `<${message.author.username}> ${message.content}`;
-  console.log(`Forwarding Discord message to IRC: ${discordMessage}`);
-  ircClient.say(IRC_CHANNEL, discordMessage);
-});
+  // Find the IRC client(s) that correspond to this Discord channel
+  for (const [ircClient, info] of ircClients.entries()) {
+    if (message.channel.id === info.discordChannelId) {
+      // Avoid echoing messages sent by the bot itself
+      if (message.author.id === discordClient.user.id) return;
 
-// Handle Discord ready event
-discordClient.on('ready', () => {
-  console.log(`Logged in as ${discordClient.user.tag}`);
-  startIRC();
+      const discordMessage = `<${message.author.username}> ${message.content}`;
+      console.log(`Forwarding Discord message to IRC [${info.server} ${info.channel}]: ${discordMessage}`);
+      ircClient.say(info.channel, discordMessage);
+    }
+  }
 });
 
 // Login to Discord
diff --git a/example.config.xml b/example.config.xml
index 59e649c..00b732e 100644
--- a/example.config.xml
+++ b/example.config.xml
@@ -1,13 +1,30 @@
-<?xml version="1.0" encoding="utf-8"?>
 <BridgeConfig>
     <Discord>
-        <Token>YOUR_DISCORD_TOKEN_HERE</Token>
-        <ChannelId>YOUR_DISCORD_CHANNEL_ID_HERE</ChannelId>
+        <Token>YOUR_DISCORD_TOKEN</Token>
     </Discord>
-    <IRC>
-        <Server>IRC_SERVER_HERE</Server>
-        <Port>IRC_PORT_HERE</Port>
-        <Channel>IRC_CHANNEL_HERE</Channel>
-        <Nick>Bridge nick over on the IRC side</Nick>
-    </IRC>
-</BridgeConfig>
\ No newline at end of file
+    <Bridges>
+        <Bridge>
+            <IRC>
+                <Server>irc.example1.net</Server>
+                <Port>6667</Port>
+                <Nick>MyIRCBot1</Nick>
+                <Channel>#channel1</Channel>
+            </IRC>
+            <Discord>
+                <ChannelId>DISCORD_CHANNEL_ID_1</ChannelId>
+            </Discord>
+        </Bridge>
+        <Bridge>
+            <IRC>
+                <Server>irc.example2.org</Server>
+                <Port>6667</Port>
+                <Nick>MyIRCBot2</Nick>
+                <Channel>#channel2</Channel>
+            </IRC>
+            <Discord>
+                <ChannelId>DISCORD_CHANNEL_ID_2</ChannelId>
+            </Discord>
+        </Bridge>
+        <!-- Add more Bridge entries as needed -->
+    </Bridges>
+</BridgeConfig>