POW everything

packages/app/src/Feed/EventPublisher.ts

@@ -1,6 +1,10 @@
 import useLogin from "Hooks/useLogin";
+import { DefaultPowWorker } from "index";
 
 export default function useEventPublisher() {
-  const { publisher } = useLogin();
+  const { publisher, preferences } = useLogin();
+  if (preferences.pow) {
+    publisher?.pow(preferences.pow, DefaultPowWorker);
+  }
   return publisher;
 }

packages/app/src/Login/Preferences.ts

@@ -66,6 +66,11 @@ export interface UserPreferences {
    * Auto-zap every post
    */
   autoZap: boolean;
+
+  /**
+   * Proof-of-Work to apply to all events
+   */
+  pow?: number;
 }
 
 export const DefaultPreferences = {

packages/app/src/Pages/settings/Preferences.tsx

@@ -157,6 +157,24 @@ const PreferencesPage = () => {
           </div>
         </div>
       </div>
+      <div className="card flex">
+        <div className="flex f-col f-grow">
+          <div>
+            <FormattedMessage defaultMessage="Proof of Work" />
+          </div>
+          <small>
+            <FormattedMessage defaultMessage="Amount of work to apply to all published events" />
+          </small>
+        </div>
+        <div>
+          <input
+            type="number"
+            defaultValue={perf.pow}
+            min={0}
+            onChange={e => updatePreferences(login, { ...perf, pow: parseInt(e.target.value || "0") })}
+          />
+        </div>
+      </div>
       <div className="card flex">
         <div className="flex f-col f-grow">
           <div>

packages/app/src/chat/nip24.ts

@@ -1,17 +1,9 @@
 import { ExternalStore, dedupe } from "@snort/shared";
-import {
-  EventKind,
-  NostrPrefix,
-  encodeTLVEntries,
-  TLVEntryType,
-  TLVEntry,
-  decodeTLV,
-  PowWorker,
-  NostrEvent,
-} from "@snort/system";
+import { EventKind, NostrPrefix, encodeTLVEntries, TLVEntryType, TLVEntry, decodeTLV, NostrEvent } from "@snort/system";
 import { GiftWrapCache } from "Cache/GiftWrapCache";
 import { UnwrappedGift } from "Db";
 import { Chat, ChatSystem, ChatType, lastReadInChat } from "chat";
+import { DefaultPowWorker } from "index";
 
 export class Nip24ChatSystem extends ExternalStore<Array<Chat>> implements ChatSystem {
   #cache: GiftWrapCache;
@@ -107,17 +99,10 @@ export class Nip24ChatSystem extends ExternalStore<Array<Chat>> implements ChatS
         const messages: Array<Promise<NostrEvent>> = [];
         const powTarget = 4 * 4; // 4-char zero
         for (const pt of participants) {
-          const recvSealedN = pub.giftWrap(
-            await pub.sealRumor(gossip, pt.id),
-            pt.id,
-            powTarget,
-            new PowWorker("/pow.js")
-          );
+          const recvSealedN = pub.giftWrap(await pub.sealRumor(gossip, pt.id), pt.id, powTarget);
           messages.push(recvSealedN);
         }
-        messages.push(
-          pub.giftWrap(await pub.sealRumor(gossip, pub.pubKey), pub.pubKey, powTarget, new PowWorker("/pow.js"))
-        );
+        messages.push(pub.giftWrap(await pub.sealRumor(gossip, pub.pubKey), pub.pubKey, powTarget, DefaultPowWorker));
         return await Promise.all(messages);
       },
       sendMessage: (ev, system) => {

packages/app/src/index.tsx

@@ -6,7 +6,7 @@ import { StrictMode } from "react";
 import * as ReactDOM from "react-dom/client";
 import { Provider } from "react-redux";
 import { createBrowserRouter, RouterProvider } from "react-router-dom";
-import { EventPublisher, NostrSystem, ProfileLoaderService, Nip7Signer } from "@snort/system";
+import { EventPublisher, NostrSystem, ProfileLoaderService, Nip7Signer, PowWorker } from "@snort/system";
 
 import * as serviceWorkerRegistration from "serviceWorkerRegistration";
 import { IntlProvider } from "IntlProvider";
@@ -60,6 +60,11 @@ export const System = new NostrSystem({
  */
 export const ProfileLoader = new ProfileLoaderService(System, UserCache);
 
+/**
+ * Singleton POW worker
+ */
+export const DefaultPowWorker = new PowWorker("/pow.js");
+
 // @ts-expect-error Setting webpack nonce
 window.__webpack_nonce__ = "ZmlhdGphZiBzYWlkIHNub3J0LnNvY2lhbCBpcyBwcmV0dHkgZ29vZCwgd2UgbWFkZSBpdCE=";
 

packages/app/src/service-worker.ts

@@ -1,5 +1,4 @@
 /// <reference lib="webworker" />
-import {} from ".";
 declare const self: ServiceWorkerGlobalScope;
 
 import { clientsClaim } from "workbox-core";

packages/system/src/event-publisher.ts

@@ -28,6 +28,8 @@ type EventBuilderHook = (ev: EventBuilder) => EventBuilder;
 export class EventPublisher {
   #pubKey: string;
   #signer: EventSigner;
+  #pow?: number;
+  #miner?: PowMiner;
 
   constructor(signer: EventSigner, pubKey: string) {
     this.#signer = signer;
@@ -59,14 +61,21 @@ export class EventPublisher {
     return this.#pubKey;
   }
 
+  /**
+   * Apply POW to every event
+   */
+  pow(target:number, miner?: PowMiner) {
+    this.#pow = target;
+    this.#miner = miner;
+  }
+
   #eb(k: EventKind) {
     const eb = new EventBuilder();
     return eb.pubKey(this.#pubKey).kind(k);
   }
 
   async #sign(eb: EventBuilder) {
-    const ev = eb.build();
-    return await this.#signer.sign(ev);
+    return await (this.#pow ? eb.pow(this.#pow, this.#miner) : eb).buildAndSign(this.#signer);
   }
 
   async nip4Encrypt(content: string, otherKey: string) {