Cache all the things

packages/system/src/nostr-link.ts

@@ -1,5 +1,6 @@
-import { bech32ToHex, hexToBech32 } from "@snort/shared";
-import { NostrPrefix, decodeTLV, TLVEntryType, encodeTLV } from ".";
+import { bech32ToHex, hexToBech32, unwrap } from "@snort/shared";
+import { NostrPrefix, decodeTLV, TLVEntryType, encodeTLV, NostrEvent, TaggedNostrEvent } from ".";
+import { findTag } from "./utils";
 
 export interface NostrLink {
   type: NostrPrefix;
@@ -10,6 +11,29 @@ export interface NostrLink {
   encode(): string;
 }
 
+export function createNostrLinkToEvent(ev: TaggedNostrEvent | NostrEvent) {
+  const relays = "relays" in ev ? ev.relays : undefined;
+
+    if (ev.kind >= 30_000 && ev.kind < 40_000) {
+      const dTag = unwrap(findTag(ev, "d"));
+      return createNostrLink(NostrPrefix.Address, dTag, relays, ev.kind, ev.pubkey);
+    }
+    return createNostrLink(NostrPrefix.Event, ev.id, relays, ev.kind, ev.pubkey);
+}
+
+export function linkMatch(link: NostrLink, ev: NostrEvent) {
+  if(link.type === NostrPrefix.Address) {
+    const dTag = findTag(ev, "d");
+    if(dTag && dTag === link.id && unwrap(link.author) === ev.pubkey && unwrap(link.kind) === ev.kind) {
+      return true;
+    }
+  } else if(link.type === NostrPrefix.Event || link.type === NostrPrefix.Note) {
+    return link.id === ev.id;
+  }
+  
+  return false;
+}
+
 export function createNostrLink(prefix: NostrPrefix, id: string, relays?: string[], kind?: number, author?: string) {
   return {
     type: prefix,