snort/packages/app/src/Feed/ThreadFeed.ts

68 lines
2.2 KiB
TypeScript

import { useEffect, useMemo, useState } from "react";
import { u256, EventKind } from "@snort/nostr";
import { appendDedupe, NostrLink } from "Util";
import { FlatNoteStore, RequestBuilder } from "System";
import useRequestBuilder from "Hooks/useRequestBuilder";
import useLogin from "Hooks/useLogin";
export default function useThreadFeed(link: NostrLink) {
const [trackingEvents, setTrackingEvent] = useState<u256[]>([link.id]);
const [trackingATags, setTrackingATags] = useState<string[]>([]);
const [allEvents, setAllEvents] = useState<u256[]>([link.id]);
const pref = useLogin().preferences;
const sub = useMemo(() => {
const sub = new RequestBuilder(`thread:${link.id.substring(0, 8)}`);
sub.withOptions({
leaveOpen: true,
});
sub.withFilter().ids(trackingEvents);
sub
.withFilter()
.kinds(
pref.enableReactions
? [EventKind.Reaction, EventKind.TextNote, EventKind.Repost, EventKind.ZapReceipt]
: [EventKind.TextNote, EventKind.ZapReceipt, EventKind.Repost]
)
.tag("e", allEvents);
if (trackingATags.length > 0) {
const parsed = trackingATags.map(a => a.split(":"));
sub
.withFilter()
.kinds(parsed.map(a => Number(a[0])))
.authors(parsed.map(a => a[1]))
.tag(
"d",
parsed.map(a => a[2])
);
}
return sub;
}, [trackingEvents, trackingATags, allEvents, pref]);
const store = useRequestBuilder<FlatNoteStore>(FlatNoteStore, sub);
useEffect(() => {
setTrackingATags([]);
setTrackingEvent([link.id]);
setAllEvents([link.id]);
}, [link.id]);
useEffect(() => {
if (store.data) {
const mainNotes = store.data?.filter(a => a.kind === EventKind.TextNote || a.kind === EventKind.Polls) ?? [];
const eTags = mainNotes.map(a => a.tags.filter(b => b[0] === "e").map(b => b[1])).flat();
const eTagsMissing = eTags.filter(a => !mainNotes.some(b => b.id === a));
setTrackingEvent(s => appendDedupe(s, eTagsMissing));
setAllEvents(s => appendDedupe(s, eTags));
const aTags = mainNotes.map(a => a.tags.filter(b => b[0] === "a").map(b => b[1])).flat();
setTrackingATags(s => appendDedupe(s, aTags));
}
}, [store]);
return store;
}