123 lines
4.0 KiB
TypeScript
123 lines
4.0 KiB
TypeScript
import "./Timeline.css";
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import { FormattedMessage } from "react-intl";
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import { useCallback, useMemo } from "react";
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import { useInView } from "react-intersection-observer";
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import { TaggedNostrEvent, EventKind, u256 } from "@snort/system";
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import Icon from "Icons/Icon";
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import { dedupeByPubkey, findTag } from "SnortUtils";
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import ProfileImage from "Element/ProfileImage";
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import useTimelineFeed, { TimelineFeed, TimelineSubject } from "Feed/TimelineFeed";
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import Note from "Element/Note";
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import useModeration from "Hooks/useModeration";
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import { LiveStreams } from "Element/LiveStreams";
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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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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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}
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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 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 { muted, isMuted } = useModeration();
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const { ref, inView } = useInView();
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const filterPosts = useCallback(
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(nts: readonly TaggedNostrEvent[]) => {
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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 || !isMuted(a.pubkey));
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},
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[props.postsOnly, muted, props.ignoreModeration],
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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 relatedFeed = useCallback(
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(id: u256) => {
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return (feed.related ?? []).filter(a => findTag(a, "e") === id);
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},
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[feed.related],
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);
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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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{latestFeed.length > 0 && (
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<>
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<div className="card latest-notes" onClick={() => onShowLatest()} ref={ref}>
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{latestAuthors.slice(0, 3).map(p => {
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return <ProfileImage pubkey={p} showUsername={false} link={""} />;
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})}
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<FormattedMessage
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defaultMessage="{n} new {n, plural, =1 {note} other {notes}}"
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values={{ n: latestFeed.length }}
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/>
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<Icon name="arrowUp" />
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</div>
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{!inView && (
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<div className="card latest-notes latest-notes-fixed pointer fade-in" onClick={() => onShowLatest(true)}>
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{latestAuthors.slice(0, 3).map(p => {
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return <ProfileImage pubkey={p} showUsername={false} link={""} />;
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})}
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<FormattedMessage
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defaultMessage="{n} new {n, plural, =1 {note} other {notes}}"
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values={{ n: latestFeed.length }}
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/>
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<Icon name="arrowUp" />
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</div>
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)}
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</>
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)}
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{mainFeed.map(e => (
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<Note key={e.id} data={e} related={relatedFeed(e.id)} ignoreModeration={props.ignoreModeration} depth={0} />
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))}
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{(props.loadMore === undefined || props.loadMore === true) && (
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<div className="flex f-center">
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<button type="button" onClick={() => feed.loadMore()}>
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<FormattedMessage defaultMessage="Load more" />
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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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