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605 lines
19 KiB
JavaScript
605 lines
19 KiB
JavaScript
import {nip19} from 'nostr-tools';
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import {zeroLeadingBitsCount} from './utils/crypto';
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import {elem, elemCanvas, elemShrink, parseTextContent, updateElemHeight} from './utils/dom';
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import {bounce, dateTime, formatTime} from './utils/time';
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import {getHost, getNoxyUrl, isWssUrl} from './utils/url';
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import {powEvent} from './system';
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import {sub24hFeed, subNote, subProfile} from './subscriptions'
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import {publish} from './relays';
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import {getReplyTo, hasEventTag, isMention, sortByCreatedAt, sortEventCreatedAt, validatePow} from './events';
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import {clearView, getViewContent, getViewElem, setViewElem, view} from './view';
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import {closeSettingsView, config, toggleSettingsView} from './settings';
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import {getReactions, getReactionContents, handleReaction, handleUpvote} from './reactions';
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// curl -H 'accept: application/nostr+json' https://relay.nostr.ch/
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function onEvent(evt, relay) {
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switch (evt.kind) {
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case 0:
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handleMetadata(evt, relay);
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break;
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case 1:
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handleTextNote(evt, relay);
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break;
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case 2:
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handleRecommendServer(evt, relay);
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break;
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case 3:
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// handleContactList(evt, relay);
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break;
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case 7:
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handleReaction(evt, relay);
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default:
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// console.log(`TODO: add support for event kind ${evt.kind}`/*, evt*/)
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}
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}
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const textNoteList = []; // could use indexDB
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const eventRelayMap = {}; // eventId: [relay1, relay2]
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const renderNote = (evt, i, sortedFeeds) => {
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if (getViewElem(evt.id)) { // note already in view
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return;
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}
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const article = createTextNote(evt, eventRelayMap[evt.id]);
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if (i === 0) {
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getViewContent().append(article);
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} else {
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getViewElem(sortedFeeds[i - 1].id).before(article);
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}
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setViewElem(evt.id, article);
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};
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const hasEnoughPOW = ([tag, , commitment], eventId) => {
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return tag === 'nonce' && commitment >= config.filterDifficulty && zeroLeadingBitsCount(eventId) >= config.filterDifficulty;
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};
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const renderFeed = bounce(() => {
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const now = Math.floor(Date.now() * 0.001);
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textNoteList
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// dont render notes from the future
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.filter(note => note.created_at <= now)
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// if difficulty filter is configured dont render notes with too little pow
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.filter(note => !config.filterDifficulty || note.tags.some(tag => hasEnoughPOW(tag, note.id)))
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.sort(sortByCreatedAt)
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.reverse()
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.forEach(renderNote);
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}, 17); // (16.666 rounded, an arbitrary value to limit updates to max 60x per s)
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function handleTextNote(evt, relay) {
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if (eventRelayMap[evt.id]) {
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eventRelayMap[evt.id] = [relay, ...(eventRelayMap[evt.id])];
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} else {
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eventRelayMap[evt.id] = [relay];
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const evtWithNip19 = {
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nip19: {
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note: nip19.noteEncode(evt.id),
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npub: nip19.npubEncode(evt.pubkey),
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},
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...evt
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};
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if (evt.tags.some(hasEventTag)) {
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handleReply(evtWithNip19, relay);
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} else {
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textNoteList.push(evtWithNip19);
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}
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}
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if (!getViewElem(evt.id)) {
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renderFeed();
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}
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}
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const replyList = [];
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function handleReply(evt, relay) {
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if (
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getViewElem(evt.id) // already rendered probably received from another relay
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|| evt.tags.some(isMention) // ignore mentions for now
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) {
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return;
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}
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const replyTo = getReplyTo(evt);
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const evtWithReplyTo = {replyTo, ...evt};
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replyList.push(evtWithReplyTo);
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renderReply(evtWithReplyTo, relay);
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}
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function renderReply(evt, relay) {
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const parent = getViewElem(evt.replyTo);
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if (!parent) { // root article has not been rendered
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return;
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}
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let replyContainer = parent.querySelector('.mobx-replies');
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if (!replyContainer) {
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replyContainer = elem('div', {className: 'mobx-replies'});
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parent.append(replyContainer);
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}
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const reply = createTextNote(evt, relay);
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replyContainer.append(reply);
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setViewElem(evt.id, reply);
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}
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const restoredReplyTo = localStorage.getItem('reply_to');
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config.rerenderFeed = () => {
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clearView();
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renderFeed();
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};
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setInterval(() => {
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document.querySelectorAll('time[datetime]').forEach(timeElem => {
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timeElem.textContent = formatTime(new Date(timeElem.dateTime));
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});
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}, 10000);
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const fetchQue = [];
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let fetchPending;
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const fetchNext = (href, id, relay) => {
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const noxy = getNoxyUrl('meta', href, id, relay);
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const previewId = noxy.searchParams.toString();
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if (fetchPending) {
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fetchQue.push({href, id, relay});
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return previewId;
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}
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fetchPending = fetch(noxy.href)
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.then(data => {
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if (data.status === 200) {
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return data.json();
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}
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// fetchQue.push({href, id, relay}); // could try one more time
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return Promise.reject(data);
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})
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.then(meta => {
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const container = document.getElementById(previewId);
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const content = [];
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if (meta.images[0]) {
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content.push(elem('img', {className: 'preview-image', loading: 'lazy', src: getNoxyUrl('data', meta.images[0], id, relay).href}));
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}
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if (meta.title) {
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content.push(elem('h2', {className: 'preview-title'}, meta.title));
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}
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if (meta.descr) {
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content.push(elem('p', {className: 'preview-descr'}, meta.descr))
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}
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if (content.length) {
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container.append(elem('a', {href, rel: 'noopener noreferrer', target: '_blank'}, content));
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container.classList.add('preview-loaded');
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}
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})
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.finally(() => {
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fetchPending = false;
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if (fetchQue.length) {
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const {href, id, relay} = fetchQue.shift();
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return fetchNext(href, id, relay);
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}
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})
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.catch(err => err.text && err.text())
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.then(errMsg => errMsg && console.warn(errMsg));
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return previewId;
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};
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function linkPreview(href, id, relay) {
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if ((/\.(gif|jpe?g|png)$/i).test(href)) {
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return elem('div', {},
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[elem('img', {className: 'preview-image-only', loading: 'lazy', src: getNoxyUrl('data', href, id, relay).href})]
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);
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}
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const previewId = fetchNext(href, id, relay);
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return elem('div', {
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className: 'preview',
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id: previewId
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});
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}
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const writeInput = document.querySelector('textarea[name="message"]');
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function createTextNote(evt, relay) {
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const {host, img, name, time, userName} = getMetadata(evt, relay);
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const replies = replyList.filter(({replyTo}) => replyTo === evt.id);
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// const isLongContent = evt.content.trimRight().length > 280;
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// const content = isLongContent ? evt.content.slice(0, 280) : evt.content;
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const reactions = getReactions(evt.id);
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const didReact = reactions.length && !!reactions.find(reaction => reaction.pubkey === config.pubkey);
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const replyFeed = replies[0] ? replies.sort(sortByCreatedAt).map(e => setViewElem(e.id, createTextNote(e, relay))) : [];
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const [content, {firstLink}] = parseTextContent(evt.content);
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const body = elem('div', {className: 'mbox-body'}, [
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elem('header', {
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className: 'mbox-header',
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title: `User: ${userName}\n${time}\n\nUser pubkey: ${evt.pubkey}\n\nRelay: ${host}\n\nEvent-id: ${evt.id}
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${evt.tags.length ? `\nTags ${JSON.stringify(evt.tags)}\n` : ''}
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${evt.content}`
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}, [
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elem('a', {className: `mbox-username${name ? ' mbox-kind0-name' : ''}`, href: `/${evt.nip19.npub}`, data: {nav: true}}, name || userName),
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' ',
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elem('a', {href: `/${evt.nip19.note}`, data: {nav: true}}, formatTime(time)),
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]),
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elem('div', {/* data: isLongContent ? {append: evt.content.slice(280)} : null*/}, [
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...content,
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(firstLink && validatePow(evt)) ? linkPreview(firstLink, evt.id, relay) : '',
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]),
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elem('div', {className: 'buttons'}, [
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elem('button', {name: 'reply', type: 'button'}, [
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elem('img', {height: 24, width: 24, src: '/assets/comment.svg'})
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]),
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elem('button', {name: 'star', type: 'button'}, [
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elem('img', {
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alt: didReact ? '✭' : '✩', // ♥
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height: 24, width: 24,
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src: `/assets/${didReact ? 'star-fill' : 'star'}.svg`,
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title: getReactionContents(evt.id).join(' '),
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}),
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elem('small', {data: {reactions: ''}}, reactions.length || ''),
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]),
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]),
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]);
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if (restoredReplyTo === evt.id) {
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appendReplyForm(body.querySelector('.buttons'));
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requestAnimationFrame(() => updateElemHeight(writeInput));
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}
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return renderArticle([
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elem('div', {className: 'mbox-img'}, [img]), body,
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replies[0] ? elem('div', {className: 'mobx-replies'}, replyFeed.reverse()) : '',
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], {data: {id: evt.id, pubkey: evt.pubkey, relay}});
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}
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function handleRecommendServer(evt, relay) {
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if (getViewElem(evt.id) || !isWssUrl(evt.content)) {
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return;
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}
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const art = renderRecommendServer(evt, relay);
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if (textNoteList.length < 2) {
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getViewContent().append(art);
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} else {
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const closestTextNotes = textNoteList
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.filter(note => !config.filterDifficulty || note.tags.some(([tag, , commitment]) => tag === 'nonce' && commitment >= config.filterDifficulty)) // TODO: prob change to hasEnoughPOW
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.sort(sortEventCreatedAt(evt.created_at));
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getViewElem(closestTextNotes[0].id)?.after(art); // TODO: note might not be in the dom yet, recommendedServers could be controlled by renderFeed
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}
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setViewElem(evt.id, art);
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}
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function handleContactList(evt, relay) {
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if (getViewElem(evt.id)) {
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return;
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}
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const art = renderUpdateContact(evt, relay);
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if (textNoteList.length < 2) {
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getViewContent().append(art);
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return;
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}
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const closestTextNotes = textNoteList.sort(sortEventCreatedAt(evt.created_at));
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getViewElem(closestTextNotes[0].id).after(art);
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setViewElem(evt.id, art);
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// const user = userList.find(u => u.pupkey === evt.pubkey);
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// if (user) {
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// console.log(`TODO: add contact list for ${evt.pubkey.slice(0, 8)} on ${relay}`, evt.tags);
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// } else {
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// tempContactList[relay] = tempContactList[relay]
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// ? [...tempContactList[relay], evt]
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// : [evt];
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// }
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}
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function renderUpdateContact(evt, relay) {
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const {img, time, userName} = getMetadata(evt, relay);
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const body = elem('div', {className: 'mbox-body', title: dateTime.format(time)}, [
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elem('header', {className: 'mbox-header'}, [
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elem('small', {}, []),
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]),
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elem('pre', {title: JSON.stringify(evt.content)}, [
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elem('strong', {}, userName),
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' updated contacts: ',
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JSON.stringify(evt.tags),
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]),
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]);
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return renderArticle([img, body], {className: 'mbox-updated-contact', data: {id: evt.id, pubkey: evt.pubkey, relay}});
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}
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function renderRecommendServer(evt, relay) {
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const {img, name, time, userName} = getMetadata(evt, relay);
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const body = elem('div', {className: 'mbox-body', title: dateTime.format(time)}, [
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elem('header', {className: 'mbox-header'}, [
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elem('small', {}, [
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elem('strong', {}, userName)
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]),
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]),
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` recommends server: ${evt.content}`,
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]);
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return renderArticle([
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elem('div', {className: 'mbox-img'}, [img]), body
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], {className: 'mbox-recommend-server', data: {id: evt.id, pubkey: evt.pubkey}});
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}
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function renderArticle(content, props = {}) {
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const className = props.className ? ['mbox', props?.className].join(' ') : 'mbox';
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return elem('article', {...props, className}, content);
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}
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const userList = [];
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// const tempContactList = {};
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function parseContent(content) {
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try {
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return JSON.parse(content);
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} catch(err) {
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console.log(evt);
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console.error(err);
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}
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}
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function handleMetadata(evt, relay) {
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const content = parseContent(evt.content);
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if (content) {
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setMetadata(evt, relay, content);
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}
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}
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function setMetadata(evt, relay, content) {
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let user = userList.find(u => u.pubkey === evt.pubkey);
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const picture = getNoxyUrl('data', content.picture, evt.id, relay).href;
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if (!user) {
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user = {
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metadata: {[relay]: content},
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...(content.picture && {picture}),
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pubkey: evt.pubkey,
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};
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userList.push(user);
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} else {
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user.metadata[relay] = {
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...user.metadata[relay],
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timestamp: evt.created_at,
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...content,
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};
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// use only the first profile pic (for now), different pics on each releay are not supported yet
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if (!user.picture) {
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user.picture = picture;
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}
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}
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// update profile images
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if (user.picture && validatePow(evt)) {
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document.body
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.querySelectorAll(`canvas[data-pubkey="${evt.pubkey}"]`)
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.forEach(canvas => (canvas.parentNode.replaceChild(elem('img', {src: user.picture}), canvas)));
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}
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if (user.metadata[relay].name) {
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document.body
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.querySelectorAll(`[data-id="${evt.pubkey}"] .mbox-username:not(.mbox-kind0-name)`)
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.forEach(username => {
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username.textContent = user.metadata[relay].name;
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username.classList.add('mbox-kind0-name');
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});
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}
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// if (tempContactList[relay]) {
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// const updates = tempContactList[relay].filter(update => update.pubkey === evt.pubkey);
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// if (updates) {
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// console.log('TODO: add contact list (kind 3)', updates);
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// }
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// }
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}
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function getMetadata(evt, relay) {
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const host = getHost(relay);
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const user = userList.find(user => user.pubkey === evt.pubkey);
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const userImg = user?.picture;
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const name = user?.metadata[relay]?.name;
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const userName = name || evt.pubkey.slice(0, 8);
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const userAbout = user?.metadata[relay]?.about || '';
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const img = (userImg && validatePow(evt)) ? elem('img', {
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alt: `${userName} ${host}`,
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loading: 'lazy',
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src: userImg,
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title: `${userName} on ${host} ${userAbout}`,
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}) : elemCanvas(evt.pubkey);
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const time = new Date(evt.created_at * 1000);
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return {host, img, name, time, userName};
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}
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const writeForm = document.querySelector('#writeForm');
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writeInput.addEventListener('focusout', () => {
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const reply_to = localStorage.getItem('reply_to');
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if (reply_to && writeInput.value === '') {
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writeInput.addEventListener('transitionend', (event) => {
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if (!reply_to || reply_to === localStorage.getItem('reply_to') && !writeInput.style.height) { // should prob use some class or data-attr instead of relying on height
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writeForm.after(elemShrink(writeInput));
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writeForm.remove();
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localStorage.removeItem('reply_to');
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}
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}, {once: true});
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}
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});
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function appendReplyForm(el) {
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writeForm.before(elemShrink(writeInput));
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writeInput.blur();
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writeInput.style.removeProperty('height');
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el.after(writeForm);
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if (writeInput.value && !writeInput.value.trimRight()) {
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writeInput.value = '';
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} else {
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requestAnimationFrame(() => updateElemHeight(writeInput));
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}
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requestAnimationFrame(() => writeInput.focus());
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}
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// send
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const sendStatus = document.querySelector('#sendstatus');
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const onSendError = err => sendStatus.textContent = err.message;
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const publishBtn = document.querySelector('#publish');
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writeForm.addEventListener('submit', async (e) => {
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e.preventDefault();
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const privatekey = localStorage.getItem('private_key');
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if (!config.pubkey || !privatekey) {
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return onSendError(new Error('no pubkey/privatekey'));
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}
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const content = writeInput.value.trimRight();
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if (!content) {
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return onSendError(new Error('message is empty'));
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}
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const replyTo = localStorage.getItem('reply_to');
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const close = () => {
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sendStatus.textContent = '';
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writeInput.value = '';
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writeInput.style.removeProperty('height');
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publishBtn.disabled = true;
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if (replyTo) {
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localStorage.removeItem('reply_to');
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publishView.append(writeForm);
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}
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publishView.hidden = true;
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};
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const tags = replyTo ? [['e', replyTo]] : []; // , eventRelayMap[replyTo][0]
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const newEvent = await powEvent({
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kind: 1,
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content,
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pubkey: config.pubkey,
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tags,
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created_at: Math.floor(Date.now() * 0.001),
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}, {
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difficulty: config.difficulty,
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statusElem: sendStatus,
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timeout: config.timeout,
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}).catch(console.warn);
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if (!newEvent) {
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close();
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return;
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}
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const sig = signEvent(newEvent, privatekey);
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// TODO validateEvent
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if (sig) {
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sendStatus.textContent = 'publishing…';
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|
publish({...newEvent, sig}, (relay, error) => {
|
|
if (error) {
|
|
return console.log(error, relay);
|
|
}
|
|
console.info(`publish request sent to ${relay}`);
|
|
close();
|
|
});
|
|
}
|
|
});
|
|
|
|
writeInput.addEventListener('input', () => {
|
|
publishBtn.disabled = !writeInput.value.trimRight();
|
|
updateElemHeight(writeInput);
|
|
});
|
|
writeInput.addEventListener('blur', () => sendStatus.textContent = '');
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
document.body.onload = () => console.log('------------ pageload ------------')
|
|
|
|
|
|
|
|
// subscribe and change view
|
|
function route(path) {
|
|
if (path === '/') {
|
|
sub24hFeed(onEvent);
|
|
view('/');
|
|
} else if (path.length === 64 && path.match(/^\/[0-9a-z]+$/)) {
|
|
const {type, data} = nip19.decode(path.slice(1));
|
|
switch(type) {
|
|
case 'note':
|
|
subNote(data, onEvent);
|
|
view(path);
|
|
break;
|
|
case 'npub':
|
|
subProfile(data, onEvent);
|
|
view(path);
|
|
break;
|
|
default:
|
|
console.warn(`type ${type} not yet supported`);
|
|
}
|
|
}
|
|
}
|
|
|
|
// onload
|
|
route(location.pathname);
|
|
history.pushState({}, '', location.pathname);
|
|
|
|
window.addEventListener('popstate', (event) => {
|
|
// console.log(`popstate: ${location.pathname}, state: ${JSON.stringify(event.state)}`);
|
|
route(location.pathname);
|
|
});
|
|
|
|
const publishView = document.querySelector('#newNote');
|
|
|
|
document.body.addEventListener('click', (e) => {
|
|
const a = e.target.closest('a');
|
|
const pubkey = e.target.closest('[data-pubkey]')?.dataset.pubkey;
|
|
const id = e.target.closest('[data-id]')?.dataset.id;
|
|
if (a) {
|
|
if ('nav' in a.dataset) {
|
|
e.preventDefault();
|
|
closeSettingsView();
|
|
if (!publishView.hidden) {
|
|
publishView.hidden = true;
|
|
}
|
|
const href = a.getAttribute('href');
|
|
route(href);
|
|
history.pushState({}, null, href);
|
|
e.preventDefault();
|
|
}
|
|
return;
|
|
}
|
|
const button = e.target.closest('button');
|
|
if (button) {
|
|
switch(button.name) {
|
|
case 'reply':
|
|
if (localStorage.getItem('reply_to') === id) {
|
|
writeInput.blur();
|
|
return;
|
|
}
|
|
appendReplyForm(button.closest('.buttons'));
|
|
localStorage.setItem('reply_to', id);
|
|
break;
|
|
case 'star':
|
|
const note = replyList.find(r => r.id === id) || textNoteList.find(n => n.id === (id));
|
|
handleUpvote(note);
|
|
break;
|
|
case 'settings':
|
|
toggleSettingsView();
|
|
break;
|
|
case 'new-note':
|
|
if (publishView.hidden) {
|
|
localStorage.removeItem('reply_to'); // should it forget old replyto context?
|
|
publishView.append(writeForm);
|
|
if (writeInput.value.trimRight()) {
|
|
writeInput.style.removeProperty('height');
|
|
}
|
|
requestAnimationFrame(() => {
|
|
updateElemHeight(writeInput);
|
|
writeInput.focus();
|
|
});
|
|
publishView.removeAttribute('hidden');
|
|
} else {
|
|
publishView.hidden = true;
|
|
}
|
|
break;
|
|
case 'back':
|
|
publishView.hidden = true;
|
|
break;
|
|
}
|
|
}
|
|
// const container = e.target.closest('[data-append]');
|
|
// if (container) {
|
|
// container.append(...parseTextContent(container.dataset.append));
|
|
// delete container.dataset.append;
|
|
// return;
|
|
// }
|
|
});
|
|
|
|
// document.body.addEventListener('keyup', (e) => {
|
|
// if (e.key === 'Escape') {
|
|
// hideNewMessage(true);
|
|
// }
|
|
// });
|