feat: emit updates from relay-worker

packages/worker-relay/src/interface.ts

@@ -5,7 +5,7 @@ import { v4 as uuid } from "uuid";
 export class WorkerRelayInterface {
   #worker: Worker;
   #log = (msg: any) => console.debug(msg);
-  #commandQueue: Map<string, (v: unknown) => void> = new Map();
+  #commandQueue: Map<string, (v: unknown, ports: ReadonlyArray<MessagePort>) => void> = new Map();
 
   constructor(path: string) {
     this.#log(`Module path: ${path}`);
@@ -14,7 +14,7 @@ export class WorkerRelayInterface {
       const cmd = e.data as WorkerMessage<any>;
       if (cmd.cmd === "reply") {
         const q = this.#commandQueue.get(cmd.id);
-        q?.(cmd);
+        q?.(cmd, e.ports);
         this.#commandQueue.delete(cmd.id);
       }
     };
@@ -37,7 +37,7 @@ export class WorkerRelayInterface {
   }
 
   async req(req: ReqCommand) {
-    return await this.#workerRpc<ReqCommand, Array<NostrEvent>>("req", req);
+    return await this.#workerRpc<ReqCommand, { results: Array<NostrEvent>; port?: Readonly<MessagePort> }>("req", req);
   }
 
   async count(req: ReqCommand) {
@@ -48,6 +48,10 @@ export class WorkerRelayInterface {
     return await this.#workerRpc<void, Record<string, number>>("summary");
   }
 
+  async close(id: string) {
+    return await this.#workerRpc<string, boolean>("close", id);
+  }
+
   #workerRpc<T, R>(cmd: string, args?: T, timeout = 30_000) {
     const id = uuid();
     const msg = {
@@ -58,13 +62,14 @@ export class WorkerRelayInterface {
     this.#worker.postMessage(msg);
     return new Promise<R>((resolve, reject) => {
       let t: ReturnType<typeof setTimeout>;
-      this.#commandQueue.set(id, v => {
+      this.#commandQueue.set(id, (v, ports) => {
         clearTimeout(t);
         const cmdReply = v as WorkerMessage<R>;
-        resolve(cmdReply.args);
+        resolve({ ...cmdReply.args, port: ports.length > 0 ? ports[0] : undefined });
       });
       t = setTimeout(() => {
         reject("timeout");
+        this.#commandQueue.delete(id);
       }, timeout);
     });
   }