refactor: TS

src/feed/TimelineFeed.ts

@@ -0,0 +1,44 @@
+import { useMemo } from "react";
+import { HexKey } from "../nostr";
+import EventKind from "../nostr/EventKind";
+import { Subscriptions } from "../nostr/Subscriptions";
+import useSubscription from "./Subscription";
+
+export default function useTimelineFeed(pubKeys: HexKey | Array<HexKey>, global: boolean = false) {
+    const subTab = global ? "global" : "follows";
+    const sub = useMemo(() => {
+        if (!Array.isArray(pubKeys)) {
+            pubKeys = [pubKeys];
+        }
+
+        if (!global && (!pubKeys || pubKeys.length === 0)) {
+            return null;
+        }
+
+        let sub = new Subscriptions();
+        sub.Id = `timeline:${subTab}`;
+        sub.Authors = new Set(global ? [] : pubKeys);
+        sub.Kinds = new Set([EventKind.TextNote, EventKind.Repost]);
+        sub.Limit = 20;
+
+        return sub;
+    }, [pubKeys, global]);
+
+    const main = useSubscription(sub, { leaveOpen: true });
+
+    const subNext = useMemo(() => {
+        return null; // TODO: spam
+        if (main.notes.length > 0) {
+            let sub = new Subscriptions();
+            sub.Id = `timeline-related:${subTab}`;
+            sub.Kinds = new Set([EventKind.Reaction, EventKind.Deletion]);
+            sub.ETags = new Set(main.notes.map(a => a.id));
+
+            return sub;
+        }
+    }, [main]);
+
+    const others = useSubscription(subNext, { leaveOpen: true });
+
+    return { main: main.notes, others: others.notes };
+}