103 lines
3.3 KiB
TypeScript
103 lines
3.3 KiB
TypeScript
import { useMemo } from "react";
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import { Link } from "react-router-dom";
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import { TaggedRawEvent, u256 } from "../nostr";
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import { default as NEvent } from "../nostr/Event";
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import EventKind from "../nostr/EventKind";
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import { eventLink } from "../Util";
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import Note from "./Note";
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import NoteGhost from "./NoteGhost";
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export interface ThreadProps {
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this?: u256,
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notes?: TaggedRawEvent[]
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}
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export default function Thread(props: ThreadProps) {
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const thisEvent = props.this;
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const notes = props.notes ?? [];
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const parsedNotes = notes.map(a => new NEvent(a));
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// root note has no thread info
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const root = useMemo(() => parsedNotes.find(a => a.Thread === null), [notes]);
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const chains = useMemo(() => {
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let chains = new Map<u256, NEvent[]>();
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parsedNotes?.filter(a => a.Kind === EventKind.TextNote).sort((a, b) => b.CreatedAt - a.CreatedAt).forEach((v) => {
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let replyTo = v.Thread?.ReplyTo?.Event ?? v.Thread?.Root?.Event;
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if (replyTo) {
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if (!chains.has(replyTo)) {
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chains.set(replyTo, [v]);
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} else {
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chains.get(replyTo)!.push(v);
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}
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} else if (v.Tags.length > 0) {
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console.log("Not replying to anything: ", v);
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}
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});
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return chains;
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}, [notes]);
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const brokenChains = useMemo(() => {
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return Array.from(chains?.keys()).filter(a => !parsedNotes?.some(b => b.Id === a));
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}, [chains]);
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const mentionsRoot = useMemo(() => {
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return parsedNotes?.filter(a => a.Kind === EventKind.TextNote && a.Thread)
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}, [chains]);
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function renderRoot() {
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if (root) {
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return <Note
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data-ev={root}
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related={notes}
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isThread />
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} else {
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return <NoteGhost>
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Loading thread root.. ({notes?.length} notes loaded)
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</NoteGhost>
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}
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}
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function renderChain(from: u256) {
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if (from && chains) {
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let replies = chains.get(from);
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if (replies) {
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return (
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<div className="indented">
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{replies.map(a => {
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return (
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<>
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<Note data-ev={a}
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key={a.Id}
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related={notes}
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highlight={thisEvent === a.Id} />
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{renderChain(a.Id)}
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</>
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)
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})}
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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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return (
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<>
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{renderRoot()}
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{root ? renderChain(root.Id) : null}
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{root ? null : <>
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<h3>Other Replies</h3>
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{brokenChains.map(a => {
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return (
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<>
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<NoteGhost key={a}>
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Missing event <Link to={eventLink(a)}>{a.substring(0, 8)}</Link>
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</NoteGhost>
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{renderChain(a)}
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</>
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)
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})}
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</>}
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</>
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);
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} |