194 lines
5.6 KiB
TypeScript
194 lines
5.6 KiB
TypeScript
import { useCallback, useEffect, useMemo } from "react";
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import { EventKind, NoteCollection, RequestBuilder } from "@snort/system";
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import { useRequestBuilder } from "@snort/system-react";
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import { unixNow } from "@snort/shared";
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import { unwrap, tagFilterOfTextRepost } from "SnortUtils";
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import useTimelineWindow from "Hooks/useTimelineWindow";
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import useLogin from "Hooks/useLogin";
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import { SearchRelays } from "Const";
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import { useReactions } from "./FeedReactions";
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export interface TimelineFeedOptions {
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method: "TIME_RANGE" | "LIMIT_UNTIL";
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window?: number;
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now?: number;
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}
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export interface TimelineSubject {
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type: "pubkey" | "hashtag" | "global" | "ptag" | "post_keyword" | "profile_keyword";
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discriminator: string;
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items: string[];
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relay?: string;
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streams?: boolean;
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}
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export type TimelineFeed = ReturnType<typeof useTimelineFeed>;
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export default function useTimelineFeed(subject: TimelineSubject, options: TimelineFeedOptions) {
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const { now, since, until, older, setUntil } = useTimelineWindow({
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window: options.window,
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now: options.now ?? unixNow(),
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});
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const pref = useLogin().preferences;
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const createBuilder = useCallback(() => {
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if (subject.type !== "global" && subject.items.length === 0) {
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return null;
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}
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const b = new RequestBuilder(`timeline:${subject.type}:${subject.discriminator}`);
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const f = b
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.withFilter()
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.kinds(
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subject.type === "profile_keyword"
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? [EventKind.SetMetadata]
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: [EventKind.TextNote, EventKind.Repost, EventKind.Polls]
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);
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if (subject.relay) {
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f.relay(subject.relay);
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}
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switch (subject.type) {
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case "pubkey": {
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f.authors(subject.items);
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break;
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}
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case "hashtag": {
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f.tag("t", subject.items);
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break;
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}
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case "ptag": {
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f.tag("p", subject.items);
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break;
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}
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case "profile_keyword": {
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f.search(subject.items[0] + " sort:popular");
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SearchRelays.forEach(r => f.relay(r));
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break;
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}
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case "post_keyword": {
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f.search(subject.items[0]);
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SearchRelays.forEach(r => f.relay(r));
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break;
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}
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}
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if (subject.streams && subject.type === "pubkey") {
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b.withFilter()
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.kinds([EventKind.LiveEvent])
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.authors(subject.items)
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.since(now - 60 * 60 * 24);
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b.withFilter().kinds([EventKind.LiveEvent]).tag("p", subject.items);
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}
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return {
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builder: b,
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filter: f,
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};
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}, [subject.type, subject.items, subject.discriminator]);
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const sub = useMemo(() => {
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const rb = createBuilder();
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if (rb) {
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if (options.method === "LIMIT_UNTIL") {
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rb.filter.until(until).limit(200);
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} else {
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rb.filter.since(since).until(until);
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if (since === undefined) {
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rb.filter.limit(50);
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}
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}
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if (pref.autoShowLatest) {
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// copy properties of main sub but with limit 0
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// this will put latest directly into main feed
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rb.builder
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.withOptions({
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leaveOpen: true,
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})
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.withFilter()
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.authors(rb.filter.filter.authors)
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.kinds(rb.filter.filter.kinds)
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.tag("p", rb.filter.filter["#p"])
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.tag("t", rb.filter.filter["#t"])
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.search(rb.filter.filter.search)
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.limit(1)
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.since(now);
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}
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}
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return rb?.builder ?? null;
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}, [until, since, options.method, pref, createBuilder]);
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const main = useRequestBuilder(NoteCollection, sub);
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const subRealtime = useMemo(() => {
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const rb = createBuilder();
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if (rb && !pref.autoShowLatest && options.method !== "LIMIT_UNTIL") {
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rb.builder.withOptions({
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leaveOpen: true,
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});
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rb.builder.id = `${rb.builder.id}:latest`;
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rb.filter.limit(1).since(now);
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}
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return rb?.builder ?? null;
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}, [pref.autoShowLatest, createBuilder]);
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const latest = useRequestBuilder(NoteCollection, subRealtime);
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useEffect(() => {
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// clear store if changing relays
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main.clear();
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latest.clear();
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}, [subject.relay]);
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function getParentEvents() {
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if (main.data) {
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const repostsByKind6 = main.data
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.filter(a => a.kind === EventKind.Repost && a.content === "")
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.map(a => a.tags.find(b => b[0] === "e"))
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.filter(a => a)
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.map(a => unwrap(a)[1]);
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const repostsByKind1 = main.data
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.filter(
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a => (a.kind === EventKind.Repost || a.kind === EventKind.TextNote) && a.tags.some(tagFilterOfTextRepost(a))
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)
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.map(a => a.tags.find(tagFilterOfTextRepost(a)))
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.filter(a => a)
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.map(a => unwrap(a)[1]);
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return [...repostsByKind6, ...repostsByKind1];
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}
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return [];
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}
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const trackingEvents = main.data?.map(a => a.id) ?? [];
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const related = useReactions(`timeline-related:${subject.type}:${subject.discriminator}`, trackingEvents, rb => {
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const trackingParentEvents = getParentEvents();
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if (trackingParentEvents.length > 0) {
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rb.withFilter().ids(trackingParentEvents);
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}
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});
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return {
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main: main.data,
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related: related.data,
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latest: latest.data,
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loading: main.loading(),
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loadMore: () => {
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if (main.data) {
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console.debug("Timeline load more!");
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if (options.method === "LIMIT_UNTIL") {
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const oldest = main.data.reduce((acc, v) => (acc = v.created_at < acc ? v.created_at : acc), unixNow());
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setUntil(oldest);
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} else {
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older();
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}
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}
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},
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showLatest: () => {
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if (latest.data) {
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main.add(latest.data);
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latest.clear();
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}
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},
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};
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}
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