refactor: update nip51 support

packages/system/src/nostr-link.ts

@@ -1,4 +1,4 @@
-import { bech32ToHex, hexToBech32, isHex, unwrap } from "@snort/shared";
+import { bech32ToHex, hexToBech32, isHex, removeUndefined, unwrap } from "@snort/shared";
 import {
   decodeTLV,
   encodeTLV,
@@ -12,7 +12,19 @@ import {
 } from ".";
 import { findTag } from "./utils";
 
-export class NostrLink {
+export interface ToNostrEventTag {
+  toEventTag(): Array<string> | undefined;
+}
+
+export class NostrHashtagLink implements ToNostrEventTag {
+  constructor(readonly tag: string) {}
+
+  toEventTag(): string[] | undefined {
+    return ["t", this.tag];
+  }
+}
+
+export class NostrLink implements ToNostrEventTag {
   constructor(
     readonly type: NostrPrefix,
     readonly id: string,
@@ -42,8 +54,8 @@ export class NostrLink {
 
   toEventTag() {
     const relayEntry = this.relays ? [this.relays[0]] : [];
-    if (this.type === NostrPrefix.PublicKey) {
-      return ["p", this.id];
+    if (this.type === NostrPrefix.PublicKey || this.type === NostrPrefix.Profile) {
+      return ["p", this.id, ...relayEntry];
     } else if (this.type === NostrPrefix.Note || this.type === NostrPrefix.Event) {
       return ["e", this.id, ...relayEntry];
     } else if (this.type === NostrPrefix.Address) {
@@ -174,6 +186,18 @@ export class NostrLink {
     throw new Error(`Unknown tag kind ${tag[0]}`);
   }
 
+  static fromTags(tags: Array<Array<string>>) {
+    return removeUndefined(
+      tags.map(a => {
+        try {
+          return NostrLink.fromTag(a);
+        } catch {
+          // ignored, cant be mapped
+        }
+      }),
+    );
+  }
+
   static fromEvent(ev: TaggedNostrEvent | NostrEvent) {
     const relays = "relays" in ev ? ev.relays : undefined;