add configuration by env var

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+  "dotenv.enableAutocloaking": false
+}

Dockerfile

@@ -8,5 +8,7 @@ ADD package.json package.json
 RUN bun install
 WORKDIR /home/bun/app
 
+ENV PORT 8080
+
 # start server
 CMD bun run ./src/server.ts

package.json

@@ -5,6 +5,9 @@
   "devDependencies": {
     "@types/bun": "latest"
   },
+  "scripts": {
+    "start": "bun run src/server.ts"
+  },
   "peerDependencies": {
     "typescript": "^5.0.0"
   },

src/WebhookServer.ts

@@ -13,6 +13,10 @@ export class WebhookServer {
 
     this.app.use(prettyJSON());
 
+    this.websockets.forEach(ws => {
+      console.log(`SERVER: subscribed to ${ws.name} at /api/${ws.name}`);
+    }); 
+
     this.app.get(`/api/:wsName`, async (c) => {
       const wsName = c.req.param('wsName');
 

src/server.ts

@@ -1,8 +1,31 @@
 import { WebhookServer } from "./WebhookServer";
 import { WebSocketLifecycle } from "./WebSocketLifeCycle";
 
-const socket = new WebSocketLifecycle("wss://ntfy.chromart.cc/buzzer/ws", "buzzer");
+const port: number = process.env.PORT ? parseInt(process.env.PORT): 8080;
-socket.registerWebSocketHandler();
 
-const wsServer = new WebhookServer([socket]);
+const sockets: WebSocketLifecycle[] = [];
-wsServer.listen(8080);
+
+// read all envs like SUB_<NAME>=<URL>
+Object.keys(process.env).forEach(e => {
+  if (!e.startsWith("SUB_")) {
+    return;
+  }
+
+  const name = e.split("_")[1].toLowerCase();
+  const url = process.env[e] as string;
+
+  const socket = new WebSocketLifecycle(url, name);
+  socket.registerWebSocketHandler();
+  
+  sockets.push(socket);
+});
+
+if (sockets.length === 0) {
+  console.warn("There is no sockets registered, exiting");
+  console.warn("USAGE: Please configure urls with environment varibles");
+  console.warn("\tSUB_<name>=<socket url>");
+} else {
+  console.log(`listening on ${sockets.length} websockets`);
+  const wsServer = new WebhookServer(sockets);
+  wsServer.listen(port);
+}