reorganize code into smaller files & dirs

packages/app/src/Db/FuzzySearch.ts

@@ -0,0 +1,41 @@
+import Fuse from "fuse.js";
+
+export type FuzzySearchResult = {
+  pubkey: string;
+  name?: string;
+  display_name?: string;
+  nip05?: string;
+};
+
+const fuzzySearch = new Fuse<FuzzySearchResult>([], {
+  keys: ["name", "display_name", { name: "nip05", weight: 0.5 }],
+  threshold: 0.3,
+  // sortFn here?
+});
+
+const profileTimestamps = new Map<string, number>(); // is this somewhere in cache?
+
+export const addEventToFuzzySearch = ev => {
+  if (ev.kind !== 0) {
+    return;
+  }
+  const existing = profileTimestamps.get(ev.pubkey);
+  if (existing) {
+    if (existing > ev.created_at) {
+      return;
+    }
+    fuzzySearch.remove(doc => doc.pubkey === ev.pubkey);
+  }
+  profileTimestamps.set(ev.pubkey, ev.created_at);
+  try {
+    const data = JSON.parse(ev.content);
+    if (ev.pubkey && (data.name || data.display_name || data.nip05)) {
+      data.pubkey = ev.pubkey;
+      fuzzySearch.add(data);
+    }
+  } catch (e) {
+    console.error(e);
+  }
+};
+
+export default fuzzySearch;