116 lines
3.8 KiB
TypeScript
116 lines
3.8 KiB
TypeScript
import "./Timeline.css";
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import { FormattedMessage } from "react-intl";
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import { useCallback, useMemo, useState } from "react";
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import { TaggedNostrEvent, EventKind, socialGraphInstance } from "@snort/system";
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import { dedupeByPubkey, findTag } from "@/SnortUtils";
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import useTimelineFeed, { TimelineFeed, TimelineSubject } from "@/Feed/TimelineFeed";
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import useModeration from "@/Hooks/useModeration";
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import { LiveStreams } from "@/Element/LiveStreams";
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import { unixNow } from "@snort/shared";
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import { TimelineRenderer } from "@/Element/Feed/TimelineRenderer";
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import { DisplayAs, DisplayAsSelector } from "@/Element/Feed/DisplayAsSelector";
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import useLogin from "@/Hooks/useLogin";
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export interface TimelineProps {
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postsOnly: boolean;
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subject: TimelineSubject;
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method: "TIME_RANGE" | "LIMIT_UNTIL";
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followDistance?: number;
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ignoreModeration?: boolean;
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window?: number;
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now?: number;
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loadMore?: boolean;
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noSort?: boolean;
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displayAs?: DisplayAs;
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showDisplayAsSelector?: boolean;
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}
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/**
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* A list of notes by "subject"
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*/
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const Timeline = (props: TimelineProps) => {
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const login = useLogin();
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const feedOptions = useMemo(() => {
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return {
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method: props.method,
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window: props.window,
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now: props.now,
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};
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}, [props]);
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const feed: TimelineFeed = useTimelineFeed(props.subject, feedOptions);
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const displayAsInitial = props.displayAs ?? login.feedDisplayAs ?? "list";
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const [displayAs, setDisplayAs] = useState<DisplayAs>(displayAsInitial);
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const { muted, isEventMuted } = useModeration();
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const filterPosts = useCallback(
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(nts: readonly TaggedNostrEvent[]) => {
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const checkFollowDistance = (a: TaggedNostrEvent) => {
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if (props.followDistance === undefined) {
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return true;
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}
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const followDistance = socialGraphInstance.getFollowDistance(a.pubkey);
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return followDistance === props.followDistance;
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};
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const a = [...nts.filter(a => a.kind !== EventKind.LiveEvent)];
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props.noSort || a.sort((a, b) => b.created_at - a.created_at);
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return a
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?.filter(a => (props.postsOnly ? !a.tags.some(b => b[0] === "e") : true))
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.filter(a => (props.ignoreModeration || !isEventMuted(a)) && checkFollowDistance(a));
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},
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[props.postsOnly, muted, props.ignoreModeration, props.followDistance],
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);
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const mainFeed = useMemo(() => {
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return filterPosts(feed.main ?? []);
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}, [feed, filterPosts]);
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const latestFeed = useMemo(() => {
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return filterPosts(feed.latest ?? []).filter(a => !mainFeed.some(b => b.id === a.id));
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}, [feed, filterPosts]);
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const liveStreams = useMemo(() => {
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return (feed.main ?? []).filter(a => a.kind === EventKind.LiveEvent && findTag(a, "status") === "live");
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}, [feed]);
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const latestAuthors = useMemo(() => {
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return dedupeByPubkey(latestFeed).map(e => e.pubkey);
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}, [latestFeed]);
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function onShowLatest(scrollToTop = false) {
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feed.showLatest();
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if (scrollToTop) {
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window.scrollTo(0, 0);
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}
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}
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return (
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<>
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<LiveStreams evs={liveStreams} />
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<DisplayAsSelector
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show={props.showDisplayAsSelector}
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activeSelection={displayAs}
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onSelect={(displayAs: DisplayAs) => setDisplayAs(displayAs)}
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/>
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<TimelineRenderer
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frags={[
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{
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events: mainFeed,
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refTime: mainFeed.at(0)?.created_at ?? unixNow(),
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},
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]}
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related={feed.related ?? []}
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latest={latestAuthors}
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showLatest={t => onShowLatest(t)}
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displayAs={displayAs}
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/>
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{(props.loadMore === undefined || props.loadMore === true) && (
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<div className="flex items-center px-3 py-4">
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<button type="button" onClick={() => feed.loadMore()}>
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<FormattedMessage defaultMessage="Load more" id="00LcfG" />
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</button>
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</div>
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)}
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</>
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);
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};
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export default Timeline;
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