2023-01-20 11:11:50 +00:00
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import './Text.css'
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2023-01-27 21:37:04 +00:00
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import { useMemo, useCallback } from "react";
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2023-01-06 11:05:27 +00:00
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import { Link } from "react-router-dom";
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2023-01-14 01:39:20 +00:00
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import ReactMarkdown from "react-markdown";
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2023-01-27 21:37:04 +00:00
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import { visit, SKIP } from "unist-util-visit";
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2023-01-06 11:05:27 +00:00
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2023-02-03 16:43:21 +00:00
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import { UrlRegex, MentionRegex, InvoiceRegex, HashtagRegex } from "Const";
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2023-01-20 11:11:50 +00:00
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import { eventLink, hexToBech32 } from "Util";
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import Invoice from "Element/Invoice";
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import Hashtag from "Element/Hashtag";
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2023-01-14 14:37:31 +00:00
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2023-01-20 11:11:50 +00:00
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import Tag from "Nostr/Tag";
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2023-01-27 21:38:41 +00:00
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import { MetadataCache } from "State/Users";
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2023-01-20 11:11:50 +00:00
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import Mention from "Element/Mention";
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2023-02-03 16:43:21 +00:00
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import HyperText from 'Element/HyperText';
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import { HexKey } from 'Nostr';
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2023-01-06 11:05:27 +00:00
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2023-02-03 16:43:21 +00:00
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export type Fragment = string | JSX.Element;
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2023-01-06 20:38:51 +00:00
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2023-02-03 16:43:21 +00:00
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export interface TextFragment {
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body: Fragment[],
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tags: Tag[],
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users: Map<string, MetadataCache>
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}
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2023-02-03 16:43:21 +00:00
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export interface TextProps {
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content: string,
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creator: HexKey,
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tags: Tag[],
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users: Map<string, MetadataCache>
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}
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2023-02-03 16:43:21 +00:00
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export default function Text({ content, tags, creator, users }: TextProps) {
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2023-02-03 16:43:21 +00:00
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function extractLinks(fragments: Fragment[]) {
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return fragments.map(f => {
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if (typeof f === "string") {
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return f.split(UrlRegex).map(a => {
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if (a.startsWith("http")) {
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return <HyperText link={a} creator={creator} />
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}
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return a;
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});
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}
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return f;
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}).flat();
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}
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2023-01-12 09:48:39 +00:00
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2023-02-03 16:43:21 +00:00
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function extractMentions(frag: TextFragment) {
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return frag.body.map(f => {
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if (typeof f === "string") {
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return f.split(MentionRegex).map((match) => {
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let matchTag = match.match(/#\[(\d+)\]/);
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if (matchTag && matchTag.length === 2) {
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let idx = parseInt(matchTag[1]);
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let ref = frag.tags?.find(a => a.Index === idx);
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if (ref) {
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switch (ref.Key) {
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case "p": {
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return <Mention pubkey={ref.PubKey!} />
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}
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case "e": {
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let eText = hexToBech32("note", ref.Event!).substring(0, 12);
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return <Link key={ref.Event} to={eventLink(ref.Event!)} onClick={(e) => e.stopPropagation()}>#{eText}</Link>;
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}
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case "t": {
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return <Hashtag tag={ref.Hashtag!} />
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}
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}
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}
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return <b style={{ color: "var(--error)" }}>{matchTag[0]}?</b>;
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} else {
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return match;
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}
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});
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}
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return f;
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}).flat();
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}
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2023-01-12 09:48:39 +00:00
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2023-02-03 16:43:21 +00:00
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function extractInvoices(fragments: Fragment[]) {
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return fragments.map(f => {
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if (typeof f === "string") {
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return f.split(InvoiceRegex).map(i => {
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if (i.toLowerCase().startsWith("lnbc")) {
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return <Invoice key={i} invoice={i} />
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} else {
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return i;
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}
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});
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}
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return f;
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}).flat();
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}
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2023-02-03 16:43:21 +00:00
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function extractHashtags(fragments: Fragment[]) {
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return fragments.map(f => {
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if (typeof f === "string") {
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return f.split(HashtagRegex).map(i => {
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if (i.toLowerCase().startsWith("#")) {
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return <Hashtag tag={i.substring(1)} />
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} else {
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return i;
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}
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});
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}
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return f;
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}).flat();
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}
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2023-02-03 16:43:21 +00:00
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function transformLi(frag: TextFragment) {
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let fragments = transformText(frag)
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return <li>{fragments}</li>
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}
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2023-01-16 17:48:25 +00:00
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2023-02-03 16:43:21 +00:00
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function transformParagraph(frag: TextFragment) {
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const fragments = transformText(frag)
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if (fragments.every(f => typeof f === 'string')) {
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return <p>{fragments}</p>
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}
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return <>{fragments}</>
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}
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2023-01-16 17:48:25 +00:00
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2023-02-03 16:43:21 +00:00
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function transformText(frag: TextFragment) {
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if (frag.body === undefined) {
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debugger;
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}
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let fragments = extractMentions(frag);
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fragments = extractLinks(fragments);
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fragments = extractInvoices(fragments);
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fragments = extractHashtags(fragments);
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return fragments;
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}
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const components = useMemo(() => {
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return {
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p: (x: any) => transformParagraph({ body: x.children ?? [], tags, users }),
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a: (x: any) => <HyperText link={x.href} creator={creator} />,
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li: (x: any) => transformLi({ body: x.children ?? [], tags, users }),
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};
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}, [content]);
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2023-01-27 21:37:04 +00:00
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const disableMarkdownLinks = useCallback(() => (tree: any) => {
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visit(tree, (node, index, parent) => {
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if (
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parent &&
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typeof index === 'number' &&
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(node.type === 'link' ||
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node.type === 'linkReference' ||
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node.type === 'image' ||
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node.type === 'imageReference' ||
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node.type === 'definition')
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) {
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node.type = 'text';
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node.value = content.slice(node.position.start.offset, node.position.end.offset).replace(/\)$/, ' )');
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return SKIP;
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}
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})
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}, [content]);
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return <ReactMarkdown
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className="text"
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components={components}
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remarkPlugins={[disableMarkdownLinks]}
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>{content}</ReactMarkdown>
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2023-01-14 01:39:20 +00:00
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}
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