feat: in-memory fallback for storing user profiles (#110)

src/Db/User.ts

@@ -1,39 +0,0 @@
-import { HexKey, TaggedRawEvent, UserMetadata } from "Nostr";
-import { hexToBech32 } from "../Util";
-
-export interface MetadataCache extends UserMetadata {
-    /**
-     * When the object was saved in cache
-     */
-    loaded: number,
-
-    /**
-     * When the source metadata event was created
-     */
-    created: number,
-
-    /**
-     * The pubkey of the owner of this metadata
-     */
-    pubkey: HexKey,
-
-    /**
-     * bech32 encoded pub key
-     */
-    npub: string
-};
-
-export function mapEventToProfile(ev: TaggedRawEvent) {
-    try {
-        let data: UserMetadata = JSON.parse(ev.content);
-        return {
-            pubkey: ev.pubkey,
-            npub: hexToBech32("npub", ev.pubkey),
-            created: ev.created_at,
-            loaded: new Date().getTime(),
-            ...data
-        } as MetadataCache;
-    } catch (e) {
-        console.error("Failed to parse JSON", ev, e);
-    }
-}

src/Db/index.ts

@@ -1,16 +1,20 @@
 import Dexie, { Table } from "dexie";
-import { MetadataCache } from "Db/User";
+import { MetadataCache } from "State/Users";
 import { hexToBech32 } from "Util";
 
+export const NAME = 'snortDB'
+export const VERSION = 2
+
+const STORES = {
+  users: '++pubkey, name, display_name, picture, nip05, npub'
+}
 
 export class SnortDB extends Dexie {
   users!: Table<MetadataCache>;
 
   constructor() {
-    super('snortDB');
-    this.version(2).stores({
-      users: '++pubkey, name, display_name, picture, nip05, npub'
-    }).upgrade(tx => {
+    super(NAME);
+    this.version(VERSION).stores(STORES).upgrade(tx => {
       return tx.table("users").toCollection().modify(user => {
         user.npub = hexToBech32("npub", user.pubkey)
       })