Initial commit: WebCB - Web-based CB radio app

server/index.js

@@ -0,0 +1,122 @@
+import express from 'express';
+import { createServer } from 'http';
+import { Server } from 'socket.io';
+import { fileURLToPath } from 'url';
+import { dirname, join } from 'path';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const app = express();
+const httpServer = createServer(app);
+const io = new Server(httpServer, {
+  cors: { origin: '*' }
+});
+
+app.use(express.static(join(__dirname, '../client')));
+
+const CHANNEL_NAMES = {
+  1: 'Europa 1', 2: 'Europa 2', 3: 'Europa 3', 4: 'Funker TG',
+  8: 'Notruf', 9: 'Notruf', 19: 'Bande (LKW/Auto)', 27: 'WW Band'
+};
+
+const channels = Array.from({ length: 40 }, (_, i) => ({
+  id: i + 1,
+  users: []
+}));
+
+const usedNames = new Set();
+
+function makeUniqueName(name) {
+  let finalName = name;
+  let counter = 1;
+  while (usedNames.has(finalName.toLowerCase())) {
+    finalName = `${name}${counter}`;
+    counter++;
+  }
+  usedNames.add(finalName.toLowerCase());
+  return finalName;
+}
+
+io.on('connection', (socket) => {
+  let currentChannel = null;
+  let username = '';
+
+  socket.on('check_name', (name, callback) => {
+    if (!name || name.trim().length < 2) {
+      callback({ available: false, message: 'Mindestens 2 Zeichen' });
+      return;
+    }
+    if (usedNames.has(name.toLowerCase())) {
+      callback({ available: false, suggested: makeUniqueName(name) });
+    } else {
+      callback({ available: true });
+    }
+  });
+
+  socket.on('join', ({ name, channel }) => {
+    username = makeUniqueName(name);
+    currentChannel = channel;
+
+    if (currentChannel) {
+      channels[currentChannel - 1].users.push({ id: socket.id, name: username, isTransmitting: false });
+    }
+
+    socket.emit('init', { channels, CHANNEL_NAMES, myName: username });
+    socket.broadcast.emit('user_update', { name: username, channel: currentChannel, joined: true });
+  });
+
+  socket.on('join_channel', ({ channel }) => {
+    socket.join(`channel-${channel}`);
+    if (currentChannel && currentChannel !== channel) {
+      socket.leave(`channel-${currentChannel}`);
+      channels[currentChannel - 1].users = channels[currentChannel - 1].users.filter(u => u.id !== socket.id);
+    }
+    currentChannel = channel;
+    if (!channels[channel - 1].users.find(u => u.id === socket.id)) {
+      channels[channel - 1].users.push({ id: socket.id, name: username, isTransmitting: false });
+    }
+    io.emit('channel_update', { channels });
+  });
+
+  socket.on('leave_channel', () => {
+    if (currentChannel) {
+      socket.leave(`channel-${currentChannel}`);
+      channels[currentChannel - 1].users = channels[currentChannel - 1].users.filter(u => u.id !== socket.id);
+      currentChannel = null;
+      io.emit('channel_update', { channels });
+    }
+  });
+
+  socket.on('transmitting', (isTransmitting) => {
+    if (currentChannel) {
+      const user = channels[currentChannel - 1].users.find(u => u.id === socket.id);
+      if (user) user.isTransmitting = isTransmitting;
+      io.emit('channel_update', { channels });
+    }
+  });
+
+  socket.on('audio', (audioData) => {
+    if (currentChannel) {
+      socket.broadcast.to(`channel-${currentChannel}`).emit('audio', audioData);
+    }
+  });
+
+  socket.on('slang', ({ channel, text, user }) => {
+    io.to(`channel-${channel}`).emit('slang', { text, user });
+  });
+
+  socket.on('disconnect', () => {
+    if (username) {
+      usedNames.delete(username.toLowerCase());
+    }
+    if (currentChannel) {
+      channels[currentChannel - 1].users = channels[currentChannel - 1].users.filter(u => u.id !== socket.id);
+      io.emit('channel_update', { channels });
+      io.emit('user_update', { name: username, channel: currentChannel, joined: false });
+    }
+  });
+});
+
+const PORT = process.env.PORT || 3001;
+httpServer.listen(PORT, () => {
+  console.log(`WebCB Server läuft auf http://localhost:${PORT}`);
+});

server/package.json

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+{
+  "name": "webcb-server",
+  "version": "1.0.0",
+  "type": "module",
+  "scripts": {
+    "start": "node index.js"
+  },
+  "dependencies": {
+    "express": "^4.18.2",
+    "socket.io": "^4.7.2"
+  }
+}