refactor-frontend-containers #72

Manually merged
offbyn merged 34 commits from refactor-frontend-containers into master 2 years ago

@ -17,8 +17,8 @@ export const options = {
'src/assets/star-fill.svg', 'src/assets/star-fill.svg',
'src/favicon.ico', 'src/favicon.ico',
'src/index.html', 'src/index.html',
'src/main.css', 'src/styles/main.css',
'src/main.js', 'src/main.ts',
'src/manifest.json', 'src/manifest.json',
'src/worker.js', 'src/worker.js',
], ],

1267
package-lock.json generated

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@ -8,7 +8,10 @@
"esbuild": "^0.14.54", "esbuild": "^0.14.54",
"esbuild-plugin-alias": "^0.2.1", "esbuild-plugin-alias": "^0.2.1",
"events": "^3.3.0", "events": "^3.3.0",
"nostr-tools": "0.24.1" "readable-stream": "4.3.0"
},
"dependencies": {
"nostr-tools": "1.6.0"
}, },
"scripts": { "scripts": {
"build": "node tools/build.js", "build": "node tools/build.js",

@ -4,23 +4,25 @@
<meta charset="utf-8"> <meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>about / nostr</title> <title>about / nostr</title>
<link rel="stylesheet" href="main.css" type="text/css"> <link rel="stylesheet" href="styles/main.css" type="text/css">
<link rel="manifest" href="/manifest.json"> <link rel="manifest" href="/manifest.json">
</head> </head>
<body> <body>
<main class="text"> <main>
<h1>nostr: notes and other stuff transmitted by relays</h1> <div class="text">
this is a nostr web client.<br> <h1>nostr: notes and other stuff transmitted by relays</h1>
source code is at <a href="https://git.qcode.ch/nostr/nostrweb">git.qcode.ch/nostr/nostrweb</a>. this is a nostr web client.<br>
<p> source code is at <a href="https://git.qcode.ch/nostr/nostrweb">git.qcode.ch/nostr/nostrweb</a>.
you are looking at version #[PKG_VERSION]#, built at git commit <p>
<a href="https://git.qcode.ch/nostr/nostrweb/commit/#[GIT_COMMIT]#">#[GIT_COMMIT]#</a>. you are looking at version #[PKG_VERSION]#, built at git commit
</p> <a href="https://git.qcode.ch/nostr/nostrweb/commit/#[GIT_COMMIT]#">#[GIT_COMMIT]#</a>.
<p> </p>
for more information about nostr protocol, check out <p>
<a href="https://github.com/nostr-protocol/nostr#readme" target="_blank" rel="noopener noreferrer">github.com/nostr-protocol/nostr#readme</a>. for more information about nostr protocol, check out
</p> <a href="https://github.com/nostr-protocol/nostr#readme" target="_blank" rel="noopener noreferrer">github.com/nostr-protocol/nostr#readme</a>.
back to <a href="/">nostr.ch</a> </p>
back to <a href="/">nostr.ch</a>
</div>
</main> </main>
</body> </body>
</html> </html>

@ -1,92 +0,0 @@
/**
* example usage:
*
* const props = {className: 'btn', onclick: async (e) => alert('hi')};
* const btn = elem('button', props, ['download']);
* document.body.append(btn);
*
* @param {string} name
* @param {HTMLElement.prototype} props
* @param {Array<HTMLElement|string>} children
* @return HTMLElement
*/
export function elem(name = 'div', {data, ...props} = {}, children = []) {
const el = document.createElement(name);
Object.assign(el, props);
if (['number', 'string'].includes(typeof children)) {
el.append(children);
} else {
el.append(...children);
}
if (data) {
Object.entries(data).forEach(([key, value]) => el.dataset[key] = value);
}
return el;
}
function isValidURL(url) {
if (!['http:', 'https:'].includes(url.protocol)) {
return false;
}
if (!['', '443', '80'].includes(url.port)) {
return false;
}
if (url.hostname === 'localhost') {
return false;
}
const lastDot = url.hostname.lastIndexOf('.');
if (lastDot < 1) {
return false;
}
if (url.hostname.slice(lastDot) === '.local') {
return false;
}
if (url.hostname.slice(lastDot + 1).match(/^[\d]+$/)) { // there should be no tld with numbers, possible ipv4
return false;
}
if (url.hostname.includes(':')) { // possibly an ipv6 addr; certainly an invalid hostname
return false;
}
return true;
}
export function parseTextContent(string) {
let firstLink;
return [string
.trimRight()
.replaceAll(/\n{3,}/g, '\n\n')
.split('\n')
.map(line => {
const words = line.split(/\s/);
return words.map(word => {
if (word.match(/^ln(tbs?|bcr?t?)[a-z0-9]+$/g)) {
return elem('a', {
href: `lightning:${word}`
}, `lightning:${word.slice(0, 24)}`);
}
if (!word.match(/^(https?:\/\/|www\.)\S*/)) {
return word;
}
try {
if (!word.startsWith('http')) {
word = 'https://' + word;
}
const url = new URL(word);
if (!isValidURL(url)) {
return word;
}
firstLink = firstLink || url.href;
return elem('a', {
href: url.href,
target: '_blank',
rel: 'noopener noreferrer'
}, url.href.slice(url.protocol.length + 2));
} catch (err) {
return word;
}
})
.reduce((acc, word) => [...acc, word, ' '], []);
})
.reduce((acc, words) => [...acc, ...words, elem('br')], []),
{firstLink}];
}

@ -0,0 +1,61 @@
import {Event} from 'nostr-tools';
import {zeroLeadingBitsCount} from './utils/crypto';
export const isMention = ([tag, , , marker]: string[]) => tag === 'e' && marker === 'mention';
export const hasEventTag = (tag: string[]) => tag[0] === 'e';
/**
* validate proof-of-work of a nostr event per nip-13.
* the validation always requires difficulty commitment in the nonce tag.
*
* @param {EventObj} evt event to validate
* TODO: @param {number} targetDifficulty target proof-of-work difficulty
*/
export const validatePow = (evt: Event) => {
const tag = evt.tags.find(tag => tag[0] === 'nonce');
if (!tag) {
return false;
}
const difficultyCommitment = Number(tag[2]);
if (!difficultyCommitment || Number.isNaN(difficultyCommitment)) {
return false;
}
return zeroLeadingBitsCount(evt.id) >= difficultyCommitment;
}
export const sortByCreatedAt = (evt1: Event, evt2: Event) => {
if (evt1.created_at === evt2.created_at) {
// console.log('TODO: OMG exactly at the same time, figure out how to sort then', evt1, evt2);
}
return evt1.created_at > evt2.created_at ? -1 : 1;
};
export const sortEventCreatedAt = (created_at: number) => (
{created_at: a}: Event,
{created_at: b}: Event,
) => (
Math.abs(a - created_at) < Math.abs(b - created_at) ? -1 : 1
);
const isReply = ([tag, , , marker]: string[]) => tag === 'e' && marker !== 'mention';
/**
* find reply-to ID according to nip-10, find marked reply or root tag or
* fallback to positional (last) e tag or return null
* @param {event} evt
* @returns replyToID | null
*/
export const getReplyTo = (evt: Event): string | null => {
const eventTags = evt.tags.filter(isReply);
const withReplyMarker = eventTags.filter(([, , , marker]) => marker === 'reply');
if (withReplyMarker.length === 1) {
return withReplyMarker[0][1];
}
const withRootMarker = eventTags.filter(([, , , marker]) => marker === 'root');
if (withReplyMarker.length === 0 && withRootMarker.length === 1) {
return withRootMarker[0][1];
}
// fallback to deprecated positional 'e' tags (nip-10)
const lastTag = eventTags.at(-1);
return lastTag ? lastTag[1] : null;
};

@ -2,141 +2,110 @@
<html> <html>
<head> <head>
<meta charset="utf-8"> <meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no, viewport-fit=cover">
<meta name="apple-mobile-web-app-status-bar-style" content="default">
<meta name="apple-mobile-web-app-capable" content="yes">
<title>nostr</title> <title>nostr</title>
<link rel="stylesheet" href="main.css" type="text/css"> <link rel="stylesheet" href="styles/main.css" type="text/css">
<link rel="manifest" href="/manifest.json"> <link rel="manifest" href="/manifest.json">
</head> </head>
<body> <body>
<main class="tabbed"> <div class="root">
<input type="radio" name="maintabs" id="settings" class="tab"> <main>
<label for="settings">profile</label> <aside>
<input type="radio" name="maintabs" id="feed" class="tab" checked> <button name="new-note" id="bubble">
<label for="feed">feed</label> <svg xmlns="http://www.w3.org/2000/svg" width="24" height="21" viewBox="0 0 80.035 70.031">
<!-- <input type="radio" name="maintabs" id="trending" class="tab"> <path fill="var(--bgcolor-textinput)" stroke="darkmagenta" stroke-width="4" d="M2.463 31.824q0-4.789 1.893-9.248 1.892-4.46 5.361-8.087 3.47-3.626 8.07-6.333 4.598-2.707 10.324-4.2 5.727-1.493 11.836-1.493 6.107 0 11.834 1.492 5.725 1.494 10.325 4.2 4.599 2.708 8.07 6.334 3.47 3.627 5.362 8.087 1.891 4.46 1.891 9.248 0 5.97-2.967 11.384-2.967 5.414-7.982 9.336-5.015 3.922-11.957 6.248-6.94 2.325-14.576 2.325-7.463 0-14.334-2.221l-8.537 6.038q-4.789 3.02-6.733 1.752-1.943-1.266-.867-7.13l1.77-8.886q-4.2-3.887-6.49-8.71-2.29-4.825-2.29-10.136Z"/>
<label for="trending">trending</label>
<input type="radio" name="maintabs" id="direct" class="tab">
<label for="direct">direct</label>
<input type="radio" name="maintabs" id="chat" class="tab">
<label for="chat">chat</label> -->
<div class="tabs">
<div class="tab-content">
<artcile>
<svg id="bubble" xmlns="http://www.w3.org/2000/svg" width="24" height="21" viewBox="0 0 80.035 70.031">
<path fill="var(--bgcolor-textinput)" stroke="currentColor" stroke-width="2" d="M2.463 31.824q0-4.789 1.893-9.248 1.892-4.46 5.361-8.087 3.47-3.626 8.07-6.333 4.598-2.707 10.324-4.2 5.727-1.493 11.836-1.493 6.107 0 11.834 1.492 5.725 1.494 10.325 4.2 4.599 2.708 8.07 6.334 3.47 3.627 5.362 8.087 1.891 4.46 1.891 9.248 0 5.97-2.967 11.384-2.967 5.414-7.982 9.336-5.015 3.922-11.957 6.248-6.94 2.325-14.576 2.325-7.463 0-14.334-2.221l-8.537 6.038q-4.789 3.02-6.733 1.752-1.943-1.266-.867-7.13l1.77-8.886q-4.2-3.887-6.49-8.71-2.29-4.825-2.29-10.136Z"/>
</svg> </svg>
<div id="newMessage" hidden> </button>
<form action="#" id="writeForm" class="form-inline"> <section class="view" id="newNote" hidden>
<fieldset> <form action="#" id="writeForm" class="form-inline">
<legend>write a new note</legend> <fieldset>
<textarea name="message" rows="1"></textarea> <legend>write a new note</legend>
<div class="buttons"> <textarea name="message" rows="1"></textarea>
<button type="submit" id="publish" disabled>send</button> <div class="buttons">
<button type="button" name="back">back</button> <button type="submit" id="publish" disabled>send</button>
</div> <button type="button" name="back">back</button>
<small id="sendstatus" class="form-status"></small> </div>
</fieldset> <small id="sendstatus" class="form-status"></small>
</fieldset>
</form>
</section>
<section class="view" id="settings" hidden>
<div class="content">
<form action="#" name="profile" autocomplete="new-password">
<label for="profile_name">name</label>
<input type="text" name="name" id="profile_name" autocomplete="off" pattern="[a-zA-Z_0-9][a-zA-Z_\-0-9]+[a-zA-Z_0-9]">
<label for="profile_about">about</label>
<textarea name="about" id="profile_about"></textarea>
<label for="profile_picture">picture</label>
<input type="url" name="picture" id="profile_picture" placeholder="https://your.domain/image.png">
<div class="buttons">
<small id="profilestatus" class="form-status" hidden></small>
<button type="submit" name="publish" tabindex="0" disabled>publish</button>
</div>
</form> </form>
<form action="#" name="options">
<label for="filterDifficulty">
difficulty filter<br>
<small>
hide text notes with mining proof lower
than:&nbsp;<span data-display="filter_difficulty"></span>. a zero value shows all notes.
</small>
</label>
<input type="range" name="filter_difficulty" step="1" min="0" max="32" id="filterDifficulty" value="0">
<label class="number" for="miningTarget">
<span>
mining difficulty<br>
<small>
with which difficulty to try to mine a proof of work when publishing events, such as: notes, replies, reactions and profile updates.
use zero to disable mining.
difficulty is defined as the number of leading zero bits, read more about
<a href="https://github.com/nostr-protocol/nips/blob/master/13.md" target="_blank" rel="noopener noreferrer">proof of work (nip-13)</a>.
</small>
</span>
<input type="number" name="mining_target" step="1" min="0" max="32" id="miningTarget" value="16">
</label>
<label class="number" for="miningTimeout">
<span>
mining timeout<br>
<small>abort trying to find a proof if timeout (in seconds) exceeds. use 0 to mine without a time limit.</small>
</span>
<input type="number" name="mining_timeout" step="1" min="0" max="256" id="miningTimeout" value="5">
</label>
</form>
<form action="#" name="settings" autocomplete="new-password">
<label for="pubkey">public-key</label>
<input type="text" id="pubkey" autocomplete="off">
<label for="privatekey">
private-key
<button type="button" name="privatekey-toggle" class="btn-inline" >
<small>show</small>
</button>
</label>
<input type="password" id="privatekey" autocomplete="off">
<div class="buttons">
<small id="keystatus" class="form-status" hidden></small>
<button type="button" name="generate" tabindex="0">new</button>
<button type="button" name="import" tabindex="0" disabled>save</button>
</div>
</form>
<footer class="text">
<p>
<a href="/about.html">about nostr.ch</a>
</p>
</footer>
</div> </div>
</artcile> </section>
<div class="cards" id="homefeed"></div> <section id="errorOverlay" class="form" hidden></section>
<div id="detail" hidden> </aside>
<article class="mbox" id="profile" data-pubkey> <!-- views are inserted here -->
<div class="mbox-body"> </main>
<img class="profile-image"> <nav>
<h2 class="profile-name mbox-username"></h2> <a href="/"><!--<span>X</span>-->feed</a>
<p class="profile-about"></p> <button tpye="button" name="settings">settings</button>
<dl><dt class="profile-pubkey-label" hidden>pubkey</dt><dd class="profile-pubkey"></dd></dl> </nav>
</div> </div>
</article>
<section id="textnote"></section>
</div>
</div>
<div class="tab-content">
<p><a href="https://github.com/nostr-protocol/nips/blob/master/12.md">NIP-12 (generic queries)</a></p>
</div>
<div class="tab-content">
<p><a href="https://github.com/nostr-protocol/nips/blob/master/04.md">NIP-04 (direct msg)</a></p>
</div>
<div class="tab-content">
<p><a href="https://github.com/nostr-protocol/nips/blob/master/28.md">NIP-28 (public chat)</a></p>
</div>
<div class="tab-content">
<!-- <div class="form form-inline">
<input type="text" name="username" id="username" placeholder="username">
<button type="button" name="publish-username" tabindex="0">publish</button>
</div> -->
<form action="#" name="profile" autocomplete="new-password">
<label for="profile_name">name</label>
<input type="text" name="name" id="profile_name" autocomplete="off" pattern="[a-zA-Z_0-9][a-zA-Z_\-0-9]+[a-zA-Z_0-9]">
<label for="profile_about">about</label>
<textarea name="about" id="profile_about"></textarea>
<label for="profile_picture">picture</label>
<input type="url" name="picture" id="profile_picture" placeholder="https://your.domain/image.png">
<div class="buttons">
<small id="profilestatus" class="form-status" hidden></small>
<button type="submit" name="publish" tabindex="0" disabled>publish</button>
</div>
</form>
<form action="#" name="options">
<label for="filterDifficulty">
difficulty filter<br>
<small>
hide text notes with mining proof lower
than:&nbsp;<span data-display="filter_difficulty"></span>. a zero value shows all notes.
</small>
</label>
<input type="range" name="filter_difficulty" step="1" min="0" max="32" id="filterDifficulty" value="0">
<label class="number" for="miningTarget">
<span>
mining difficulty<br>
<small>
with which difficulty to try to mine a proof of work when publishing events, such as: notes, replies, reactions and profile updates.
use zero to disable mining.
difficulty is defined as the number of leading zero bits, read more about
<a href="https://github.com/nostr-protocol/nips/blob/master/13.md" target="_blank" rel="noopener noreferrer">proof of work (nip-13)</a>.
</small>
</span>
<input type="number" name="mining_target" step="1" min="0" max="32" id="miningTarget" value="16">
</label>
<label class="number" for="miningTimeout">
<span>
mining timeout<br>
<small>abort trying to find a proof if timeout (in seconds) exceeds. use 0 to mine without a time limit.</small>
</span>
<input type="number" name="mining_timeout" step="1" min="0" max="256" id="miningTimeout" value="5">
</label>
</form>
<form action="#" name="settings" autocomplete="new-password">
<label for="pubkey">public-key</label>
<input type="text" id="pubkey" autocomplete="off">
<label for="privatekey">
private-key
<button type="button" name="privatekey-toggle" class="btn-inline" >
<small>show</small>
</button>
</label>
<input type="password" id="privatekey" autocomplete="off">
<div class="buttons">
<small id="keystatus" class="form-status" hidden></small>
<button type="button" name="generate" tabindex="0">new</button>
<button type="button" name="import" tabindex="0" disabled>save</button>
</div>
</form>
<footer class="text">
<p>
<a href="/about.html">about nostr.ch</a>
</p>
</footer>
</div>
</div>
<div id="errorOverlay" class="form" hidden></div>
</main>
</body> </body>
<script src="main.js"></script> <script src="main.js"></script>

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@ -0,0 +1,294 @@
import {Event, nip19} from 'nostr-tools';
import {zeroLeadingBitsCount} from './utils/crypto';
import {elem} from './utils/dom';
import {bounce} from './utils/time';
import {isWssUrl} from './utils/url';
import {sub24hFeed, subNote, subProfile} from './subscriptions'
import {getReplyTo, hasEventTag, isMention, sortByCreatedAt, sortEventCreatedAt} from './events';
import {clearView, getViewContent, getViewElem, getViewOptions, setViewElem, view} from './view';
import {closeSettingsView, config, toggleSettingsView} from './settings';
import {handleReaction, handleUpvote} from './reactions';
import {closePublishView, openWriteInput, togglePublishView} from './write';
import {handleMetadata, renderProfile} from './profiles';
import {EventWithNip19, EventWithNip19AndReplyTo, textNoteList, replyList} from './notes';
import {createTextNote, renderRecommendServer} from './ui';
// curl -H 'accept: application/nostr+json' https://relay.nostr.ch/
type EventRelayMap = {
[eventId: string]: string[];
};
const eventRelayMap: EventRelayMap = {}; // eventId: [relay1, relay2]
const renderNote = (
evt: EventWithNip19,
i: number,
sortedFeeds: EventWithNip19[],
) => {
if (getViewElem(evt.id)) { // note already in view
return;
}
const article = createTextNote(evt, eventRelayMap[evt.id][0]);
if (i === 0) {
getViewContent().append(article);
} else {
getViewElem(sortedFeeds[i - 1].id).before(article);
}
setViewElem(evt.id, article);
};
const hasEnoughPOW = (
[tag, , commitment]: string[],
eventId: string
) => {
return tag === 'nonce' && Number(commitment) >= config.filterDifficulty && zeroLeadingBitsCount(eventId) >= config.filterDifficulty;
};
const renderFeed = bounce(() => {
const view = getViewOptions();
switch (view.type) {
case 'note':
textNoteList
.concat(replyList)
.filter(note => note.id === view.id)
.forEach(renderNote);
break;
case 'profile':
const isEvent = <T>(evt?: T): evt is T => evt !== undefined;
[
...textNoteList
.filter(note => note.pubkey === view.id),
...replyList.filter(reply => reply.pubkey === view.id)
.map(reply => textNoteList.find(note => note.id === reply.replyTo) || replyList.find(note => note.id === reply.replyTo) )
.filter(isEvent)
]
.sort(sortByCreatedAt)
.reverse()
.forEach(renderNote); // render in-reply-to
renderProfile(view.id);
break;
case 'feed':
const now = Math.floor(Date.now() * 0.001);
textNoteList
.filter(note => {
// dont render notes from the future
if (note.created_at > now) return false;
// if difficulty filter is configured dont render notes with too little pow
return !config.filterDifficulty || note.tags.some(tag => hasEnoughPOW(tag, note.id))
})
.sort(sortByCreatedAt)
.reverse()
.forEach(renderNote);
break;
}
}, 17); // (16.666 rounded, an arbitrary value to limit updates to max 60x per s)
const renderReply = (evt: EventWithNip19AndReplyTo) => {
const parent = getViewElem(evt.replyTo);
if (!parent) { // root article has not been rendered
return;
}
let replyContainer = parent.querySelector('.mobx-replies');
if (!replyContainer) {
replyContainer = elem('div', {className: 'mobx-replies'});
parent.append(replyContainer);
}
const reply = createTextNote(evt, eventRelayMap[evt.id][0]);
replyContainer.append(reply);
setViewElem(evt.id, reply);
};
const handleReply = (evt: EventWithNip19, relay: string) => {
if (
getViewElem(evt.id) // already rendered probably received from another relay
|| evt.tags.some(isMention) // ignore mentions for now
) {
return;
}
const replyTo = getReplyTo(evt);
if (!replyTo) {
console.warn('expected to find reply-to-event-id', evt);
return;
}
const evtWithReplyTo = {replyTo, ...evt};
replyList.push(evtWithReplyTo);
renderReply(evtWithReplyTo);
};
const handleTextNote = (evt: Event, relay: string) => {
if (evt.content.startsWith('vmess://') && !evt.content.includes(' ')) {
console.info('drop VMESS encrypted message');
return;
}
if (eventRelayMap[evt.id]) {
eventRelayMap[evt.id] = [...(eventRelayMap[evt.id]), relay]; // TODO: just push?
} else {
eventRelayMap[evt.id] = [relay];
const evtWithNip19 = {
nip19: {
note: nip19.noteEncode(evt.id),
npub: nip19.npubEncode(evt.pubkey),
},
...evt,
};
if (evt.tags.some(hasEventTag)) {
handleReply(evtWithNip19, relay);
} else {
textNoteList.push(evtWithNip19);
}
}
if (!getViewElem(evt.id)) {
renderFeed();
}
};
config.rerenderFeed = () => {
clearView();
renderFeed();
};
const handleRecommendServer = (evt: Event, relay: string) => {
if (getViewElem(evt.id) || !isWssUrl(evt.content)) {
return;
}
const art = renderRecommendServer(evt, relay);
if (textNoteList.length < 2) {
getViewContent().append(art);
} else {
const closestTextNotes = textNoteList
// TODO: prob change to hasEnoughPOW
.filter(note => !config.filterDifficulty || note.tags.some(([tag, , commitment]) => tag === 'nonce' && Number(commitment) >= config.filterDifficulty))
.sort(sortEventCreatedAt(evt.created_at));
getViewElem(closestTextNotes[0].id)?.after(art); // TODO: note might not be in the dom yet, recommendedServers could be controlled by renderFeed
}
setViewElem(evt.id, art);
};
const onEvent = (evt: Event, relay: string) => {
switch (evt.kind) {
case 0:
handleMetadata(evt, relay);
break;
case 1:
handleTextNote(evt, relay);
break;
case 2:
handleRecommendServer(evt, relay);
break;
case 3:
// handleContactList(evt, relay);
break;
case 7:
handleReaction(evt, relay);
default:
// console.log(`TODO: add support for event kind ${evt.kind}`/*, evt*/)
}
};
// subscribe and change view
const route = (path: string) => {
if (path === '/') {
sub24hFeed(onEvent);
view('/', {type: 'feed'});
} else if (path.length === 64 && path.match(/^\/[0-9a-z]+$/)) {
const {type, data} = nip19.decode(path.slice(1));
if (typeof data !== 'string') {
console.warn('nip19 ProfilePointer, EventPointer and AddressPointer are not yet supported');
return;
}
switch(type) {
case 'note':
subNote(data, onEvent);
view(path, {type: 'note', id: data});
break;
case 'npub':
subProfile(data, onEvent);
view(path, {type: 'profile', id: data});
break;
default:
console.warn(`type ${type} not yet supported`);
}
renderFeed();
}
};
// onload
route(location.pathname);
history.pushState({}, '', location.pathname);
window.addEventListener('popstate', (event) => {
route(location.pathname);
});
const handleLink = (a: HTMLAnchorElement, e: MouseEvent) => {
const href = a.getAttribute('href');
if (typeof href !== 'string') {
console.warn('expected anchor to have href attribute', a);
return;
}
closeSettingsView();
closePublishView();
if (href === location.pathname) {
e.preventDefault();
return;
}
if (
href === '/'
|| href.startsWith('/note')
|| href.startsWith('/npub')
) {
route(href);
history.pushState({}, '', href);
e.preventDefault();
}
};
const handleButton = (button: HTMLButtonElement) => {
switch(button.name) {
case 'settings':
toggleSettingsView();
return;
case 'new-note':
togglePublishView();
return;
case 'back':
closePublishView();
return;
}
const id = (button.closest('[data-id]') as HTMLElement)?.dataset.id;
if (id) {
switch(button.name) {
case 'reply':
openWriteInput(button, id);
break;
case 'star':
const note = replyList.find(r => r.id === id) || textNoteList.find(n => n.id === (id));
note && handleUpvote(note);
break;
}
}
// const container = e.target.closest('[data-append]');
// if (container) {
// container.append(...parseTextContent(container.dataset.append));
// delete container.dataset.append;
// return;
// }
};
document.body.addEventListener('click', (event: MouseEvent) => {
const target = event.target as HTMLElement;
const a = target?.closest('a');
if (a) {
// dont intercept command-click
if (event.metaKey) {
return;
}
handleLink(a, event);
return;
}
const button = target?.closest('button');
if (button) {
handleButton(button);
}
});

@ -0,0 +1,114 @@
import { elem } from './utils/dom';
import { getNoxyUrl } from './utils/url';
export const parseContent = (content: string): unknown => {
try {
return JSON.parse(content);
} catch(err) {
console.warn(err, content);
return null;
}
}
type FetchItem = {
href: string;
id: string;
relay: string;
};
type NoxyData = {
title: string;
descr: string;
images: string[];
};
const fetchQue: Array<FetchItem> = [];
let fetchPending: (null | Promise<NoxyData>) = null;
const fetchNext = (
href: string,
id: string,
relay: string,
) => {
const noxy = getNoxyUrl('meta', href, id, relay);
if (!noxy) {
return false;
}
const previewId = noxy.searchParams.toString();
if (fetchPending) {
fetchQue.push({href, id, relay});
return previewId;
}
fetchPending = fetch(noxy.href)
.then(data => {
if (data.status === 200) {
return data.json();
}
// fetchQue.push({href, id, relay}); // could try one more time
return Promise.reject(data);
})
.then(meta => {
const container = document.getElementById(previewId);
const content: Array<HTMLElement> = [];
if (meta.images[0]) {
const img = getNoxyUrl('data', meta.images[0], id, relay);
img && content.push(
elem('img', {
className: 'preview-image',
loading: 'lazy',
src: img.href,
})
);
}
if (meta.title) {
content.push(elem('h2', {className: 'preview-title'}, meta.title));
}
if (meta.descr) {
content.push(elem('p', {className: 'preview-descr'}, meta.descr))
}
if (container && content.length) {
container.append(elem('a', {href, rel: 'noopener noreferrer', target: '_blank'}, content));
container.classList.add('preview-loaded');
}
})
.finally(() => {
fetchPending = null;
if (fetchQue.length) {
const {href, id, relay} = fetchQue.shift() as FetchItem;
return fetchNext(href, id, relay);
}
})
.catch(err => err.text && err.text())
.then(errMsg => errMsg && console.warn(errMsg));
return previewId;
};
export const linkPreview = (
href: string,
id: string,
relay: string,
) => {
if ((/\.(gif|jpe?g|png)$/i).test(href)) {
const img = getNoxyUrl('data', href, id, relay);
if (!img) {
return null;
}
return elem('div', {},
[elem('img', {
className: 'preview-image-only',
loading: 'lazy',
src: img.href,
})]
);
}
const previewId = fetchNext(href, id, relay);
if (!previewId) {
return null;
}
return elem('div', {
className: 'preview',
id: previewId,
});
};

@ -0,0 +1,16 @@
import {Event} from 'nostr-tools';
export type EventWithNip19 = Event & {
nip19: {
note: string;
npub: string;
}
};
export const textNoteList: Array<EventWithNip19> = []; // could use indexDB
export type EventWithNip19AndReplyTo = EventWithNip19 & {
replyTo: string;
};
export const replyList: Array<EventWithNip19AndReplyTo> = [];

@ -0,0 +1,179 @@
import {Event} from 'nostr-tools';
import {elem, elemCanvas} from './utils/dom';
import {getHost, getNoxyUrl} from './utils/url';
import {getViewContent, getViewElem} from './view';
import {validatePow} from './events';
import {parseContent} from './media';
type Metadata = {
name?: string;
about?: string;
picture?: string;
};
type Profile = {
metadata: {
[relay: string]: Metadata;
};
name?: string;
picture?: string;
pubkey: string;
};
const userList: Array<Profile> = [];
// const tempContactList = {};
const setMetadata = (
evt: Event,
relay: string,
metadata: Metadata,
) => {
let user = userList.find(u => u.pubkey === evt.pubkey);
if (!user) {
user = {
metadata: {[relay]: metadata},
pubkey: evt.pubkey,
};
userList.push(user);
} else {
user.metadata[relay] = {
...user.metadata[relay],
// timestamp: evt.created_at,
...metadata,
};
}
// store the first seen name (for now) as main user.name
if (!user.name && metadata.name) {
user.name = metadata.name;
}
// use the first seen profile pic (for now), pics from different relays are not supported yet
if (!user.picture && metadata.picture) {
const imgUrl = getNoxyUrl('data', metadata.picture, evt.id, relay);
if (imgUrl) {
user.picture = imgUrl.href;
// update profile images that used some nip-13 work
if (imgUrl.href && validatePow(evt)) {
document.body
.querySelectorAll(`canvas[data-pubkey="${evt.pubkey}"]`)
.forEach(canvas => canvas.parentNode?.replaceChild(elem('img', {src: imgUrl.href}), canvas));
}
}
}
// update profile names
const name = user.metadata[relay].name || user.name || '';
if (name) {
document.body
// TODO: this should not depend on specific DOM structure, move pubkey info on username element
.querySelectorAll(`[data-pubkey="${evt.pubkey}"] > .mbox-body > header .mbox-username:not(.mbox-kind0-name)`)
.forEach((username: HTMLElement) => {
username.textContent = name;
username.classList.add('mbox-kind0-name');
});
}
// if (tempContactList[relay]) {
// const updates = tempContactList[relay].filter(update => update.pubkey === evt.pubkey);
// if (updates) {
// console.log('TODO: add contact list (kind 3)', updates);
// }
// }
};
export const handleMetadata = (evt: Event, relay: string) => {
const content = parseContent(evt.content);
if (!content || typeof content !== 'object' || Array.isArray(content)) {
console.warn('expected nip-01 JSON object with user info, but got something funny', evt);
return;
}
const hasNameString = 'name' in content && typeof content.name === 'string';
const hasAboutString = 'about' in content && typeof content.about === 'string';
const hasPictureString = 'picture' in content && typeof content.picture === 'string';
// custom
const hasDisplayName = 'display_name' in content && typeof content.display_name === 'string';
if (!hasNameString && !hasAboutString && !hasPictureString && !hasDisplayName) {
console.warn('expected basic nip-01 user info (name, about, picture) but nothing found', evt);
return;
}
const metadata: Metadata = {
...(hasNameString && {name: content.name as string} || hasDisplayName && {name: content.display_name as string}),
...(hasAboutString && {about: content.about as string}),
...(hasPictureString && {picture: content.picture as string}),
};
setMetadata(evt, relay, metadata);
};
export const getProfile = (pubkey: string) => userList.find(user => user.pubkey === pubkey);
export const getMetadata = (evt: Event, relay: string) => {
const host = getHost(relay);
const user = getProfile(evt.pubkey);
const userImg = user?.picture;
const name = user?.metadata[relay]?.name || user?.name;
const userName = name || evt.pubkey.slice(0, 8);
const userAbout = user?.metadata[relay]?.about || '';
const img = (userImg && validatePow(evt)) ? elem('img', {
alt: `${userName} ${host}`,
loading: 'lazy',
src: userImg,
title: `${userName} on ${host} ${userAbout}`,
}) : elemCanvas(evt.pubkey);
const time = new Date(evt.created_at * 1000);
return {host, img, name, time, userName};
};
/* export function handleContactList(evt, relay) {
if (getViewElem(evt.id)) {
return;
}
const art = renderUpdateContact(evt, relay);
if (textNoteList.length < 2) {
getViewContent().append(art);
return;
}
const closestTextNotes = textNoteList.sort(sortEventCreatedAt(evt.created_at));
getViewElem(closestTextNotes[0].id).after(art);
setViewElem(evt.id, art);
// const user = userList.find(u => u.pupkey === evt.pubkey);
// if (user) {
// console.log(`TODO: add contact list for ${evt.pubkey.slice(0, 8)} on ${relay}`, evt.tags);
// } else {
// tempContactList[relay] = tempContactList[relay]
// ? [...tempContactList[relay], evt]
// : [evt];
// }
} */
// function renderUpdateContact(evt, relay) {
// const {img, time, userName} = getMetadata(evt, relay);
// const body = elem('div', {className: 'mbox-body', title: dateTime.format(time)}, [
// elem('header', {className: 'mbox-header'}, [
// elem('small', {}, []),
// ]),
// elem('pre', {title: JSON.stringify(evt.content)}, [
// elem('strong', {}, userName),
// ' updated contacts: ',
// JSON.stringify(evt.tags),
// ]),
// ]);
// return renderArticle([img, body], {className: 'mbox-updated-contact', data: {id: evt.id, pubkey: evt.pubkey, relay}});
// }
export const renderProfile = (id: string) => {
const content = getViewContent();
const header = getViewElem(id);
if (!content || !header) {
return;
}
const profile = getProfile(id);
if (profile && profile.name) {
const h1 = header.querySelector('h1');
if (h1) {
h1.textContent = profile.name;
} else {
header.prepend(elem('h1', {}, profile.name));
}
}
};

@ -0,0 +1,105 @@
import {Event, signEvent, UnsignedEvent} from 'nostr-tools';
import {powEvent} from './system';
import {publish} from './relays';
import {hasEventTag} from './events';
import {getViewElem} from './view';
import {config} from './settings';
type ReactionMap = {
[eventId: string]: Array<Event>
};
const reactionMap: ReactionMap = {};
export const getReactions = (eventId: string) => reactionMap[eventId] || [];
export const getReactionContents = (eventId: string) => {
return reactionMap[eventId]?.map(({content}) => content) || [];
};
export const handleReaction = (
evt: Event,
relay: string,
) => {
// last id is the note that is being reacted to https://github.com/nostr-protocol/nips/blob/master/25.md
const lastEventTag = evt.tags.filter(hasEventTag).at(-1);
if (!lastEventTag || !evt.content.length) {
// ignore reactions with no content
return;
}
const [, eventId] = lastEventTag;
if (reactionMap[eventId]) {
if (reactionMap[eventId].find(reaction => reaction.id === evt.id)) {
// already received this reaction from a different relay
return;
}
reactionMap[eventId] = [evt, ...(reactionMap[eventId])];
} else {
reactionMap[eventId] = [evt];
}
const article = getViewElem(eventId);
if (article) {
const button = article.querySelector('button[name="star"]') as HTMLButtonElement;
const reactions = button.querySelector('[data-reactions]') as HTMLElement;
reactions.textContent = `${reactionMap[eventId].length || ''}`;
if (evt.pubkey === config.pubkey) {
const star = button.querySelector('img[src*="star"]');
star?.setAttribute('src', '/assets/star-fill.svg');
star?.setAttribute('title', getReactionContents(eventId).join(' '));
}
}
};
const upvote = async (
eventId: string,
evt: UnsignedEvent,
) => {
const article = getViewElem(eventId);
const reactionBtn = article.querySelector('button[name="star"]') as HTMLButtonElement;
const statusElem = article.querySelector('[data-reactions]') as HTMLElement;
reactionBtn.disabled = true;
const newReaction = await powEvent(evt, {
difficulty: config.difficulty,
statusElem,
timeout: config.timeout,
}).catch(console.warn);
if (!newReaction) {
statusElem.textContent = `${getReactions(eventId)?.length}`;
reactionBtn.disabled = false;
return;
}
const privatekey = localStorage.getItem('private_key');
if (!privatekey) {
statusElem.textContent = 'no private key to sign';
statusElem.hidden = false;
return;
}
const sig = signEvent(newReaction, privatekey);
// TODO: validateEvent
if (sig) {
statusElem.textContent = 'publishing…';
publish({...newReaction, sig}, (relay, error) => {
if (error) {
return console.error(error, relay);
}
console.info(`event published by ${relay}`);
});
reactionBtn.disabled = false;
}
};
export const handleUpvote = (evt: Event) => {
const tags = [
...evt.tags
.filter(tag => ['e', 'p'].includes(tag[0])) // take e and p tags from event
.map(([a, b]) => [a, b]), // drop optional (nip-10) relay and marker fields, TODO: use relay?
['e', evt.id], ['p', evt.pubkey], // last e and p tag is the id and pubkey of the note being reacted to (nip-25)
];
upvote(evt.id, {
kind: 7,
pubkey: config.pubkey,
content: '+',
tags,
created_at: Math.floor(Date.now() * 0.001),
});
};

@ -0,0 +1,99 @@
import {Event, Filter, relayInit, Relay, Sub} from 'nostr-tools';
type SubCallback = (
event: Readonly<Event>,
relay: Readonly<string>,
) => void;
type Subscribe = {
cb: SubCallback;
filter: Filter;
};
const relayList: Array<Relay> = [];
const subList: Array<Sub> = [];
const currentSubList: Array<Subscribe> = [];
export const addRelay = async (url: string) => {
const relay = relayInit(url);
relay.on('connect', () => {
console.info(`connected to ${relay.url}`);
});
relay.on('error', () => {
console.warn(`failed to connect to ${relay.url}`);
});
try {
await relay.connect();
currentSubList.forEach(({cb, filter}) => subscribe(cb, filter, relay));
relayList.push(relay);
} catch {
console.warn(`could not connect to ${url}`);
}
};
const unsubscribe = (sub: Sub) => {
sub.unsub();
subList.splice(subList.indexOf(sub), 1);
};
const subscribe = (
cb: SubCallback,
filter: Filter,
relay: Relay,
) => {
const sub = relay.sub([filter]);
subList.push(sub);
sub.on('event', (event: Event) => {
cb(event, relay.url);
});
sub.on('eose', () => {
// console.log('eose', relay.url);
// unsubscribe(sub);
});
};
const subscribeAll = (
cb: SubCallback,
filter: Filter,
) => {
relayList.forEach(relay => subscribe(cb, filter, relay));
};
export const sub = (obj: Subscribe) => {
currentSubList.push(obj);
subscribeAll(obj.cb, obj.filter);
};
export const unsubAll = () => {
subList.forEach(unsubscribe);
currentSubList.length = 0;
};
type PublishCallback = (
relay: string,
errorMessage?: string,
) => void;
export const publish = (
event: Event,
cb: PublishCallback,
) => {
relayList.forEach(relay => {
const pub = relay.publish(event);
pub.on('ok', () => {
console.info(`${relay.url} has accepted our event`);
cb(relay.url);
});
pub.on('failed', (reason: any) => {
console.error(`failed to publish to ${relay.url}: ${reason}`);
cb(relay.url, reason);
});
});
};
addRelay('wss://relay.snort.social'); // good one
addRelay('wss://nostr.bitcoiner.social');
addRelay('wss://nostr.mom');
addRelay('wss://relay.nostr.bg');
addRelay('wss://nos.lol');
addRelay('wss://relay.nostr.ch');

@ -0,0 +1,236 @@
import {generatePrivateKey, getPublicKey, signEvent} from 'nostr-tools';
import {updateElemHeight} from './utils/dom';
import {powEvent} from './system';
import {publish} from './relays';
const settingsView = document.querySelector('#settings') as HTMLElement;
export const closeSettingsView = () => settingsView.hidden = true;
export const toggleSettingsView = () => settingsView.hidden = !settingsView.hidden;
let pubkey: string = '';
const loadOrGenerateKeys = () => {
const storedPubKey = localStorage.getItem('pub_key');
if (storedPubKey) {
return storedPubKey;
}
const privatekey = generatePrivateKey();
const pubkey = getPublicKey(privatekey);
localStorage.setItem('private_key', privatekey);
localStorage.setItem('pub_key', pubkey);
return pubkey;
};
let filterDifficulty: number = 0;
let difficulty: number = 16;
let timeout: number = 5;
let rerenderFeed: (() => void) | undefined;
/**
* global config object
* config.pubkey, if not set loaded from localStorage or generate a new key
*/
export const config = {
get pubkey() {
if (!pubkey) {
pubkey = loadOrGenerateKeys();
}
return pubkey;
},
set pubkey(value) {
console.info(`pubkey was set to ${value}`);
pubkey = value;
},
get filterDifficulty() {
return filterDifficulty;
},
get difficulty() {
return difficulty;
},
get timeout() {
return timeout;
},
set rerenderFeed(value: () => void) {
rerenderFeed = value;
}
};
const getNumberFromStorage = (
item: string,
fallback: number,
) => {
const stored = localStorage.getItem(item);
if (!stored) {
return fallback;
}
return Number(stored);
};
// filter difficulty
const filterDifficultyInput = document.querySelector('#filterDifficulty') as HTMLInputElement;
const filterDifficultyDisplay = document.querySelector('[data-display="filter_difficulty"]') as HTMLElement;
filterDifficultyInput.addEventListener('input', (e) => {
localStorage.setItem('filter_difficulty', filterDifficultyInput.value);
filterDifficulty = filterDifficultyInput.valueAsNumber;
filterDifficultyDisplay.textContent = filterDifficultyInput.value;
rerenderFeed && rerenderFeed();
});
filterDifficulty = getNumberFromStorage('filter_difficulty', 0);
filterDifficultyInput.valueAsNumber = filterDifficulty;
filterDifficultyDisplay.textContent = filterDifficultyInput.value;
// mining difficulty target
const miningTargetInput = document.querySelector('#miningTarget') as HTMLInputElement;
miningTargetInput.addEventListener('input', (e) => {
localStorage.setItem('mining_target', miningTargetInput.value);
difficulty = miningTargetInput.valueAsNumber;
});
// arbitrary difficulty default, still experimenting.
difficulty = getNumberFromStorage('mining_target', 16);
miningTargetInput.valueAsNumber = difficulty;
// mining timeout
const miningTimeoutInput = document.querySelector('#miningTimeout') as HTMLInputElement;
miningTimeoutInput.addEventListener('input', (e) => {
localStorage.setItem('mining_timeout', miningTimeoutInput.value);
timeout = miningTimeoutInput.valueAsNumber;
});
timeout = getNumberFromStorage('mining_timeout', 5);
miningTimeoutInput.valueAsNumber = timeout;
// settings
const settingsForm = document.querySelector('form[name="settings"]') as HTMLFormElement;
const privateKeyInput = settingsForm.querySelector('#privatekey') as HTMLInputElement;
const pubKeyInput = settingsForm.querySelector('#pubkey') as HTMLInputElement;
const statusMessage = settingsForm.querySelector('#keystatus') as HTMLElement;
const generateBtn = settingsForm.querySelector('button[name="generate"]') as HTMLButtonElement;
const importBtn = settingsForm.querySelector('button[name="import"]') as HTMLButtonElement;
const privateTgl = settingsForm.querySelector('button[name="privatekey-toggle"]') as HTMLButtonElement;
const validKeys = (
privatekey: string,
pubkey: string,
) => {
try {
if (getPublicKey(privatekey) === pubkey) {
statusMessage.hidden = true;
statusMessage.textContent = 'public-key corresponds to private-key';
importBtn.removeAttribute('disabled');
return true;
} else {
statusMessage.textContent = 'private-key does not correspond to public-key!'
}
} catch (e) {
statusMessage.textContent = `not a valid private-key: ${e.message || e}`;
}
statusMessage.hidden = false;
importBtn.disabled = true;
return false;
};
generateBtn.addEventListener('click', () => {
const privatekey = generatePrivateKey();
const pubkey = getPublicKey(privatekey);
if (validKeys(privatekey, pubkey)) {
privateKeyInput.value = privatekey;
pubKeyInput.value = pubkey;
statusMessage.textContent = 'private-key created!';
statusMessage.hidden = false;
}
});
importBtn.addEventListener('click', () => {
const privatekey = privateKeyInput.value;
const pubkeyInput = pubKeyInput.value;
if (validKeys(privatekey, pubkeyInput)) {
localStorage.setItem('private_key', privatekey);
localStorage.setItem('pub_key', pubkeyInput);
statusMessage.textContent = 'stored private and public key locally!';
statusMessage.hidden = false;
config.pubkey = pubkeyInput;
}
});
settingsForm.addEventListener('input', () => validKeys(privateKeyInput.value, pubKeyInput.value));
privateKeyInput.addEventListener('paste', (event) => {
if (pubKeyInput.value || !event.clipboardData) {
return;
}
if (privateKeyInput.value === '' || ( // either privatekey field is empty
privateKeyInput.selectionStart === 0 // or the whole text is selected and replaced with the clipboard
&& privateKeyInput.selectionEnd === privateKeyInput.value.length
)) { // only generate the pubkey if no data other than the text from clipboard will be used
try {
pubKeyInput.value = getPublicKey(event.clipboardData.getData('text'));
} catch(err) {} // settings form will call validKeys on input and display the error
}
});
privateTgl.addEventListener('click', () => {
privateKeyInput.type = privateKeyInput.type === 'text' ? 'password' : 'text';
});
privateKeyInput.value = localStorage.getItem('private_key') || '';
pubKeyInput.value = localStorage.getItem('pub_key') || '';
// profile
const profileForm = document.querySelector('form[name="profile"]') as HTMLFormElement;
const profileSubmit = profileForm.querySelector('button[type="submit"]') as HTMLButtonElement;
const profileStatus = document.querySelector('#profilestatus') as HTMLElement;
profileForm.addEventListener('input', (e) => {
if (e.target instanceof HTMLElement) {
if (e.target?.nodeName === 'TEXTAREA') {
updateElemHeight(e.target as HTMLTextAreaElement);
}
}
const form = new FormData(profileForm);
const name = form.get('name');
const about = form.get('about');
const picture = form.get('picture');
profileSubmit.disabled = !(name || about || picture);
});
profileForm.addEventListener('submit', async (e) => {
e.preventDefault();
const form = new FormData(profileForm);
const newProfile = await powEvent({
kind: 0,
pubkey: config.pubkey,
content: JSON.stringify(Object.fromEntries(form)),
tags: [],
created_at: Math.floor(Date.now() * 0.001)
}, {
difficulty: config.difficulty,
statusElem: profileStatus,
timeout: config.timeout,
}).catch(console.warn);
if (!newProfile) {
profileStatus.textContent = 'publishing profile data canceled';
profileStatus.hidden = false;
return;
}
const privatekey = localStorage.getItem('private_key');
if (!privatekey) {
profileStatus.textContent = 'no private key to sign';
profileStatus.hidden = false;
return;
}
const sig = signEvent(newProfile, privatekey);
// TODO: validateEvent
if (sig) {
publish({...newProfile, sig}, (relay, error) => {
if (error) {
return console.error(error, relay);
}
console.info(`publish request sent to ${relay}`);
profileStatus.textContent = 'profile metadata successfully published';
profileStatus.hidden = false;
profileSubmit.disabled = true;
});
}
});

@ -1,19 +1,13 @@
/* https://developer.mozilla.org/en-US/docs/Web/CSS/Layout_cookbook/Media_objects */ /* https://developer.mozilla.org/en-US/docs/Web/CSS/Layout_cookbook/Media_objects */
.mbox { .mbox {
--profileimg-size: 4rem;
--profileimg-size-half: 2rem;
--profileimg-size-quarter: 1rem;
align-items: center; align-items: center;
display: flex; display: flex;
flex-direction: row; flex-direction: row;
flex-shrink: 0;
flex-wrap: wrap; flex-wrap: wrap;
margin-bottom: 1rem; margin-bottom: 1rem;
padding: 0 var(--gap); max-width: var(--content-width);
} padding: 0 var(--gap-half);
@media (orientation: portrait) {
.mbox {
padding: 0 var(--gap-half);
}
} }
.mbox:last-child { .mbox:last-child {
margin-bottom: 0; margin-bottom: 0;
@ -28,10 +22,10 @@
border-radius: var(--profileimg-size); border-radius: var(--profileimg-size);
flex-basis: var(--profileimg-size); flex-basis: var(--profileimg-size);
height: var(--profileimg-size); height: var(--profileimg-size);
margin-right: 1.5rem; margin-right: var(--gap-half);
max-height: var(--profileimg-size); max-height: var(--profileimg-size);
max-width: var(--profileimg-size); max-width: var(--profileimg-size);
overflow: hidden; overflow: clip;
position: relative; position: relative;
z-index: 2; z-index: 2;
} }
@ -53,19 +47,14 @@
word-break: break-word; word-break: break-word;
} }
.mbox-img + .mbox-body { .mbox-img + .mbox-body {
flex-basis: calc(100% - 64px - 1rem); flex-basis: calc(100% - var(--profileimg-size) - var(--gap-half));
} }
.mbox-header { .mbox-header {
flex-basis: calc(100% - 64px - 1rem);
flex-grow: 0;
flex-shrink: 1;
margin-top: 0; margin-top: 0;
} }
.mbox-header time, .mbox-header a {
.mbox-username { font-size: var(--font-small);
color: var(--color-accent);
cursor: pointer;
} }
.mbox-kind0-name { .mbox-kind0-name {
@ -90,7 +79,7 @@
} }
.mbox { .mbox {
overflow: hidden; overflow: clip;
} }
.mbox .mbox { .mbox .mbox {
overflow: visible; overflow: visible;
@ -126,21 +115,21 @@
display: block; display: block;
height: 200vh; height: 200vh;
left: var(--profileimg-size-half); left: var(--profileimg-size-half);
margin-left: -.2rem; margin-left: -.1rem;
position: absolute; position: absolute;
top: -200vh; top: -200vh;
width: .4rem; width: .2rem;
} }
.mobx-replies .mbox .mbox::before { .mobx-replies .mbox .mbox::before {
background: none; background: none;
border-color: var(--bgcolor-inactive);; border-color: var(--bgcolor-inactive);;
border-style: solid; border-style: solid;
border-width: 0 0 .4rem .4rem; border-width: 0 0 .2rem .2rem;
content: ""; content: "";
display: block; display: block;
height: var(--profileimg-size-quarter); height: var(--profileimg-size-quarter);
left: calc(-1 * var(--profileimg-size-quarter)); left: calc(-1 * var(--profileimg-size-quarter));
margin-left: -.2rem; margin-left: -.1rem;
position: absolute; position: absolute;
top: 0; top: 0;
width: .8rem; width: .8rem;
@ -152,10 +141,10 @@
display: block; display: block;
height: 100vh; height: 100vh;
left: calc(-1 * var(--profileimg-size-quarter)); left: calc(-1 * var(--profileimg-size-quarter));
margin-left: -.2rem; margin-left: -.1rem;
position: absolute; position: absolute;
top: -100vh; top: -100vh;
width: .4rem; width: .2rem;
} }
/* support visualisation of 3 levels of thread nesting, rest render flat without line */ /* support visualisation of 3 levels of thread nesting, rest render flat without line */
.mbox .mobx-replies .mobx-replies::before, .mbox .mobx-replies .mobx-replies::before,

@ -29,7 +29,7 @@
} }
#errorOverlay .buttons { #errorOverlay .buttons {
max-width: var(--max-width); max-width: var(--content-width);
} }
@media (orientation: portrait) { @media (orientation: portrait) {
#errorOverlay .buttons { #errorOverlay .buttons {

@ -8,7 +8,8 @@ form,
--padding: 1.2rem; --padding: 1.2rem;
display: flex; display: flex;
flex-direction: column; flex-direction: column;
padding: var(--gap); max-width: var(--content-width);
padding: 0 var(--gap);
} }
fieldset { fieldset {
@ -21,7 +22,7 @@ legend {
display: none; display: none;
width: 100%; width: 100%;
} }
#newMessage legend { #newNote legend {
display: block; display: block;
} }
@ -82,17 +83,17 @@ textarea {
textarea:focus { textarea:focus {
min-height: 3.5rem; min-height: 3.5rem;
} }
#newMessage textarea { #newNote textarea {
min-height: 10rem; min-height: 10rem;
} }
#newMessage textarea:focus { #newNote textarea:focus {
min-height: 18rem; min-height: 18rem;
} }
@media (orientation: portrait) { @media (orientation: portrait) {
#newMessage textarea { #newNote textarea {
min-height: 8rem; min-height: 8rem;
} }
#newMessage textarea:focus { #newNote textarea:focus {
min-height: 15rem; min-height: 15rem;
} }
} }
@ -235,7 +236,7 @@ button#publish {
button[name="back"] { button[name="back"] {
display: none; display: none;
} }
#newMessage button[name="back"] { #newNote button[name="back"] {
align-self: end; align-self: end;
display: inherit; display: inherit;
} }

@ -1,13 +1,14 @@
@import "tabs.css"; @import "view.css";
@import "cards.css"; @import "cards.css";
@import "form.css"; @import "form.css";
@import "write.css"; @import "write.css";
@import "error.css"; @import "error.css";
:root { :root {
--content-width: min(100% - 2.4rem, 96ch);
/* 5px auto Highlight */ /* 5px auto Highlight */
--focus-border-color: rgb(0, 122, 255); --focus-border-color: rgb(0, 122, 255);
--focus-border-radius: 2px; --focus-border-radius: .2rem;
--focus-outline-color: rgb(192, 227, 252); --focus-outline-color: rgb(192, 227, 252);
--focus-outline-offset: 2px; --focus-outline-offset: 2px;
--focus-outline-style: solid; --focus-outline-style: solid;
@ -16,7 +17,9 @@
--font-small: 1.2rem; --font-small: 1.2rem;
--gap: 2.4rem; --gap: 2.4rem;
--gap-half: 1.2rem; --gap-half: 1.2rem;
--max-width: 96ch; --profileimg-size: 4rem;
--profileimg-size-half: 2rem;
--profileimg-size-quarter: 1rem;
} }
::selection { ::selection {
@ -30,7 +33,8 @@
@media (prefers-color-scheme: light) { @media (prefers-color-scheme: light) {
html { html {
--bgcolor: #fdfefa; --bgcolor: #fff;
--bgcolor-nav: gainsboro;
--bgcolor-accent: #7badfc; --bgcolor-accent: #7badfc;
--bgcolor-danger: rgb(225, 40, 40); --bgcolor-danger: rgb(225, 40, 40);
--bgcolor-danger-input: rgba(255 255 255 / .85); --bgcolor-danger-input: rgba(255 255 255 / .85);
@ -45,6 +49,7 @@
@media (prefers-color-scheme: dark) { @media (prefers-color-scheme: dark) {
html { html {
--bgcolor: #191919; --bgcolor: #191919;
--bgcolor-nav: darkslateblue;
--bgcolor-accent: rgb(16, 93, 176); --bgcolor-accent: rgb(16, 93, 176);
--bgcolor-danger: rgb(169, 0, 0); --bgcolor-danger: rgb(169, 0, 0);
--bgcolor-danger-input: rgba(0 0 0 / .5); --bgcolor-danger-input: rgba(0 0 0 / .5);
@ -74,6 +79,12 @@ body {
color: var(--color); color: var(--color);
font-size: 1.6rem; font-size: 1.6rem;
line-height: 1.5; line-height: 1.5;
word-break: break-all;
}
html, body {
min-height: 100%;
height: 100%;
margin: 0; margin: 0;
} }
@ -98,7 +109,7 @@ img {
} }
.text { .text {
margin: var(--gap); padding: 0 var(--gap);
} }
.danger { .danger {
@ -114,9 +125,11 @@ a:focus {
outline: var(--focus-outline); outline: var(--focus-outline);
outline-offset: 0; outline-offset: 0;
} }
a:visited { a:visited {
color: darkmagenta; color: darkslateblue;
}
nav a:visited {
color: inherit;
} }
img[alt] { img[alt] {

@ -0,0 +1,132 @@
.root {
display: flex;
height: 100%;
max-height: 100%;
flex-direction: column;
}
@media (orientation: landscape) {
.root {
flex-direction: row-reverse;
}
}
main {
display: flex;
flex-grow: 1;
height: 100%;
overflow: clip;
position: relative;
width: 100%;
}
aside {
z-index: 4;
}
nav {
background-color: var(--bgcolor-nav);
display: flex;
flex-direction: row;
flex-grow: 1;
flex-shrink: 0;
justify-content: space-between;
overflow-y: auto;
padding: 0 1.5rem;
user-select: none;
-webkit-user-select: none;
}
@supports (padding: max(0px)) {
nav {
padding-bottom: env(safe-area-inset-bottom);
}
}
@media (orientation: landscape) {
nav {
flex-direction: column;
justify-content: space-between;
}
}
nav a,
nav button {
--bgcolor-accent: transparent;
--border-color: transparent;
border-radius: 0;
padding: 1rem;
}
@media (orientation: landscape) {
nav a,
nav button {
padding: 2rem 0;
}
}
.view {
background-color: var(--bgcolor);
display: flex;
flex-direction: column;
left: 0;
min-height: 100%;
opacity: 1;
overflow-x: clip;
position: absolute;
top: 0;
transform: translateX(0);
transition: transform .3s cubic-bezier(.465,.183,.153,.946);
width: 100%;
will-change: transform;
z-index: 2;
}
@media (orientation: landscape) {
.view {
transition: opacity .3s cubic-bezier(.465,.183,.153,.946);
}
}
.view.view-next {
z-index: 3;
}
.view.view-prev {
z-index: 1;
}
@media (orientation: portrait) {
.view.view-next {
transform: translateX(100%);
}
.view.view-prev {
transform: translateX(-20%);
}
}
@media (orientation: landscape) {
.view.view-next,
.view.view-next {
opacity: 0;
pointer-events: none;
}
}
.content {
display: flex;
flex-direction: column;
flex-grow: 1;
margin-inline: auto;
overflow-y: auto;
padding: var(--gap-half) 0 0 0;
width: 100%;
}
main .content {
height: 1px;
}
nav .content {
display: flex;
flex-direction: row;
justify-content: space-between;
}
nav a {
display: flex;
flex-direction: column;
text-align: center;
text-decoration: none;
}
.content > header {
padding: 3rem 3rem 3rem calc(var(--profileimg-size) + var(--gap));
}

@ -1,20 +1,29 @@
#bubble { #bubble {
bottom: 4rem; background-color: darkmagenta;
border-color: darkmagenta;
border-radius: 10rem;
bottom: 8rem;
height: 10rem; height: 10rem;
padding: 0; padding: 0;
position: fixed; position: fixed;
right: 5rem; right: 8rem;
width: 10rem; width: 10rem;
z-index: 12; z-index: 1;
} }
@media (orientation: portrait) { @media (orientation: portrait) {
#bubble { #bubble {
bottom: calc(2 * var(--gap)); bottom: calc(4 * var(--gap));
right: var(--gap); right: var(--gap);
} }
} }
#bubble svg {
height: 100%;
position: relative;
width: 100%;
top: .5rem;
}
#newMessage { #newNote {
align-items: center; align-items: center;
display: flex; display: flex;
height: 100vh; height: 100vh;
@ -25,12 +34,12 @@
z-index: 20; z-index: 20;
} }
@media (orientation: portrait) { @media (orientation: portrait) {
#newMessage { #newNote {
align-items: start; align-items: start;
} }
} }
#newMessage #writeForm { #newNote #writeForm {
align-items: start; align-items: start;
background-color: var(--bgcolor); background-color: var(--bgcolor);
display: flex; display: flex;
@ -46,11 +55,11 @@
padding: 2rem; padding: 2rem;
} }
#newMessage .form-inline textarea { #newNote .form-inline textarea {
flex-basis: 100%; flex-basis: 100%;
margin: var(--gap) 0; margin: var(--gap) 0;
} }
#newMessage .buttons { #newNote .buttons {
align-self: end; align-self: end;
} }

@ -0,0 +1,69 @@
import {Event} from 'nostr-tools';
import {sub, unsubAll} from './relays';
type SubCallback = (
event: Event,
relay: string,
) => void;
/** subscribe to global feed */
export const sub24hFeed = (onEvent: SubCallback) => {
unsubAll();
sub({
cb: onEvent,
filter: {
kinds: [0, 1, 2, 7],
// until: Math.floor(Date.now() * 0.001),
since: Math.floor((Date.now() * 0.001) - (24 * 60 * 60)),
limit: 50,
}
});
};
/** subscribe to a note id (nip-19) */
export const subNote = (
eventId: string,
onEvent: SubCallback,
) => {
unsubAll();
sub({
cb: onEvent,
filter: {
ids: [eventId],
kinds: [1],
limit: 1,
}
});
sub({
cb: onEvent,
filter: {
'#e': [eventId],
kinds: [1, 7],
}
});
};
/** subscribe to npub key (nip-19) */
export const subProfile = (
pubkey: string,
onEvent: SubCallback,
) => {
unsubAll();
sub({
cb: onEvent,
filter: {
authors: [pubkey],
kinds: [0],
limit: 1,
}
});
// get notes for profile
sub({
cb: onEvent,
filter: {
authors: [pubkey],
kinds: [1],
limit: 50,
}
});
};

@ -0,0 +1,124 @@
import {Event, getEventHash, UnsignedEvent} from 'nostr-tools';
import {elem, lockScroll, unlockScroll} from './utils/dom';
const errorOverlay = document.querySelector('section#errorOverlay') as HTMLElement;
type PromptErrorOptions = {
onCancel?: () => void;
onRetry?: () => void;
};
/**
* Creates an error overlay, currently with hardcoded POW related message, this could be come a generic prompt
* @param error message
* @param options {onRetry, onCancel} callbacks
*/
const promptError = (
error: string,
options: PromptErrorOptions,
) => {
const {onCancel, onRetry} = options;
lockScroll();
errorOverlay.replaceChildren(
elem('h1', {className: 'error-title'}, error),
elem('p', {}, 'time ran out finding a proof with the desired mining difficulty. either try again, lower the mining difficulty or increase the timeout in profile settings.'),
elem('div', {className: 'buttons'}, [
onCancel ? elem('button', {data: {action: 'close'}}, 'close') : '',
onRetry ? elem('button', {data: {action: 'again'}}, 'try again') : '',
]),
);
const handleOverlayClick = (e: MouseEvent) => {
if (e.target instanceof Element) {
const button = e.target.closest('button');
if (button) {
switch(button.dataset.action) {
case 'close':
onCancel && onCancel();
break;
case 'again':
onRetry && onRetry();
break;
}
errorOverlay.removeEventListener('click', handleOverlayClick);
errorOverlay.hidden = true;
unlockScroll();
}
}
};
errorOverlay.addEventListener('click', handleOverlayClick);
errorOverlay.hidden = false;
}
type PowEventOptions = {
difficulty: number;
statusElem: HTMLElement;
timeout: number;
};
type WorkerResponse = {
error: string;
event: Event;
};
type HashedEvent = UnsignedEvent & {
id: string;
};
/**
* run proof of work in a worker until at least the specified difficulty.
* if succcessful, the returned event contains the 'nonce' tag
* and the updated created_at timestamp.
*
* powEvent returns a rejected promise if the funtion runs for longer than timeout.
* a zero timeout makes mineEvent run without a time limit.
* a zero mining target just resolves the promise without trying to find a 'nonce'.
*/
export const powEvent = (
evt: UnsignedEvent,
options: PowEventOptions
): Promise<HashedEvent | void> => {
const {difficulty, statusElem, timeout} = options;
if (difficulty === 0) {
return Promise.resolve({
...evt,
id: getEventHash(evt),
});
}
const cancelBtn = elem('button', {className: 'btn-inline'}, [elem('small', {}, 'cancel')]);
statusElem.replaceChildren('working…', cancelBtn);
statusElem.hidden = false;
return new Promise((resolve, reject) => {
const worker = new Worker('./worker.js');
const onCancel = () => {
worker.terminate();
reject(`mining kind ${evt.kind} event canceled`);
};
cancelBtn.addEventListener('click', onCancel);
worker.onmessage = (msg: MessageEvent<WorkerResponse>) => {
worker.terminate();
cancelBtn.removeEventListener('click', onCancel);
if (msg.data.error) {
promptError(msg.data.error, {
onCancel: () => reject(`mining kind ${evt.kind} event canceled`),
onRetry: async () => {
const result = await powEvent(evt, {difficulty, statusElem, timeout}).catch(console.warn);
resolve(result);
}
})
} else {
resolve(msg.data.event);
}
};
worker.onerror = (err) => {
worker.terminate();
// promptError(msg.data.error, {});
cancelBtn.removeEventListener('click', onCancel);
reject(err);
};
worker.postMessage({event: evt, difficulty, timeout});
});
};

@ -1,76 +0,0 @@
.tabs {
flex-basis: 100%;
margin-top: 4rem;
}
.tabs .tab-content { display: none; }
#feed:checked ~ .tabs .tab-content:nth-child(1),
#trending:checked ~ .tabs .tab-content:nth-child(2),
#direct:checked ~ .tabs .tab-content:nth-child(3),
#chat:checked ~ .tabs .tab-content:nth-child(4),
#settings:checked ~ .tabs .tab-content:nth-child(5) { display: block; }
input[type="radio"].tab {
clip: rect(0, 0, 0, 0);
height: 0;
overflow: hidden;
position: absolute;
width: 0;
}
.tab + label {
background-color: var(--bgcolor-textinput);
border: none;
color: var(--color);
display: inline-block;
margin-left: var(--gap);
margin-top: var(--gap);
outline: 2px solid var(--bgcolor-accent);
padding: 1rem 1.5em;
position: relative;
top: 1px;
z-index: 11;
}
input[type="radio"]:checked + label {
background: var(--bgcolor-accent);
}
.tab:focus + label,
.tab:active + label {
border-color: var(--focus-border-color);
border-radius: var(--focus-border-radius);
outline: var(--focus-outline);
outline-offset: var(--focus-outline-offset);
}
.tab-content {
max-width: var(--max-width);
min-height: 200px;
padding: var(--gap-half) 0 100px 0;
}
.tabbed {
align-items: start;
display: flex;
flex-wrap: wrap;
}
@media (orientation: portrait) {
.tabbed {
align-items: start;
display: flex;
flex-direction: row-reverse;
flex-wrap: wrap;
justify-content: start;
}
.tabs {
height: 100vh;
height: 100dvh;
margin-top: 0;
order: 1;
overflow: scroll;
width: 100vw;
}
.tab + label {
margin-top: calc(-3 * var(--gap));
margin-left: var(--gap);
order: 2;
}
}

@ -0,0 +1,84 @@
import {Event} from 'nostr-tools';
import {elem, elemArticle, parseTextContent} from './utils/dom';
import {dateTime, formatTime} from './utils/time';
import {validatePow, sortByCreatedAt} from './events';
import {setViewElem} from './view';
import {config} from './settings';
import {getReactions, getReactionContents} from './reactions';
import {openWriteInput} from './write';
import {linkPreview} from './media';
import {getMetadata} from './profiles';
import {EventWithNip19, replyList} from './notes';
setInterval(() => {
document.querySelectorAll('time[datetime]').forEach((timeElem: HTMLTimeElement) => {
timeElem.textContent = formatTime(new Date(timeElem.dateTime));
});
}, 10000);
export const createTextNote = (
evt: EventWithNip19,
relay: string,
) => {
const {host, img, name, time, userName} = getMetadata(evt, relay);
const replies = replyList.filter(({replyTo}) => replyTo === evt.id);
// const isLongContent = evt.content.trimRight().length > 280;
// const content = isLongContent ? evt.content.slice(0, 280) : evt.content;
const reactions = getReactions(evt.id);
const didReact = reactions.length && !!reactions.find(reaction => reaction.pubkey === config.pubkey);
const [content, {firstLink}] = parseTextContent(evt.content);
const buttons = elem('div', {className: 'buttons'}, [
elem('button', {name: 'reply', type: 'button'}, [
elem('img', {height: 24, width: 24, src: '/assets/comment.svg'})
]),
elem('button', {name: 'star', type: 'button'}, [
elem('img', {
alt: didReact ? '✭' : '✩', // ♥
height: 24, width: 24,
src: `/assets/${didReact ? 'star-fill' : 'star'}.svg`,
title: getReactionContents(evt.id).join(' '),
}),
elem('small', {data: {reactions: ''}}, reactions.length || ''),
]),
]);
if (localStorage.getItem('reply_to') === evt.id) {
openWriteInput(buttons, evt.id);
}
const replyFeed: Array<HTMLElement> = replies[0] ? replies.sort(sortByCreatedAt).map(e => setViewElem(e.id, createTextNote(e, relay))) : [];
return elemArticle([
elem('div', {className: 'mbox-img'}, img),
elem('div', {className: 'mbox-body'}, [
elem('header', {
className: 'mbox-header',
title: `User: ${userName}\n${time}\n\nUser pubkey: ${evt.pubkey}\n\nRelay: ${host}\n\nEvent-id: ${evt.id}
${evt.tags.length ? `\nTags ${JSON.stringify(evt.tags)}\n` : ''}
${evt.content}`
}, [
elem('a', {className: `mbox-username${name ? ' mbox-kind0-name' : ''}`, href: `/${evt.nip19.npub}`}, name || userName),
' ',
elem('a', {href: `/${evt.nip19.note}`}, elem('time', {dateTime: time.toISOString()}, formatTime(time))),
]),
elem('div', {/* data: isLongContent ? {append: evt.content.slice(280)} : null*/}, [
...content,
(firstLink && validatePow(evt)) ? linkPreview(firstLink, evt.id, relay) : null,
]),
buttons,
]),
...(replies[0] ? [elem('div', {className: 'mobx-replies'}, replyFeed.reverse())] : []),
], {data: {id: evt.id, pubkey: evt.pubkey, relay}});
};
export const renderRecommendServer = (evt: Event, relay: string) => {
const {img, name, time, userName} = getMetadata(evt, relay);
const body = elem('div', {className: 'mbox-body', title: dateTime.format(time)}, [
elem('header', {className: 'mbox-header'}, [
elem('small', {}, [
elem('strong', {}, userName)
]),
]),
` recommends server: ${evt.content}`,
]);
return elemArticle([
elem('div', {className: 'mbox-img'}, [img]), body
], {className: 'mbox-recommend-server', data: {id: evt.id, pubkey: evt.pubkey}});
};

@ -1,22 +0,0 @@
/**
* throttle and debounce given function in regular time interval,
* but with the difference that the last call will be debounced and therefore never missed.
* @param {*} function to throttle and debounce
* @param {*} time desired interval to execute function
* @returns callback
*/
export const bounce = (fn, time) => {
let throttle;
let debounce;
return (/*...args*/) => {
if (throttle) {
clearTimeout(debounce);
debounce = setTimeout(() => fn(/*...args*/), time);
return;
}
fn(/*...args*/);
throttle = setTimeout(() => {
throttle = false;
}, time);
};
};

@ -0,0 +1,8 @@
/**
* type-guarded function that tells TypeScript (in strictNullChecks mode) that you're filtering out null/undefined items.
* example: array.filter(isNotNull)
*/
export const isNotNull = <T>(item: T): item is NonNullable<T> => item != null;
// alternative
// const const isNotNull = <T>(item: T | null): item is T => item !== null;

@ -1,19 +1,19 @@
/** /**
* evaluate the difficulty of hex32 according to nip-13. * evaluate the difficulty of hex32 according to nip-13.
* @param hex32 a string of 64 chars - 32 bytes in hex representation * @param hex32 a string of 64 chars - 32 bytes in hex representation
*/ */
export const zeroLeadingBitsCount = (hex32) => { export const zeroLeadingBitsCount = (hex32: string) => {
let count = 0; let count = 0;
for (let i = 0; i < 64; i += 2) { for (let i = 0; i < 64; i += 2) {
const hexbyte = hex32.slice(i, i + 2); // grab next byte const hexbyte = hex32.slice(i, i + 2); // grab next byte
if (hexbyte == '00') { if (hexbyte === '00') {
count += 8; count += 8;
continue; continue;
} }
// reached non-zero byte; count number of 0 bits in hexbyte // reached non-zero byte; count number of 0 bits in hexbyte
const bits = parseInt(hexbyte, 16).toString(2).padStart(8, '0'); const bits = parseInt(hexbyte, 16).toString(2).padStart(8, '0');
for (let b = 0; b < 8; b++) { for (let b = 0; b < 8; b++) {
if (bits[b] == '1' ) { if (bits[b] === '1' ) {
break; // reached non-zero bit; stop break; // reached non-zero bit; stop
} }
count += 1; count += 1;

@ -0,0 +1,191 @@
import {isNotNull} from './array';
import {isValidURL} from './url';
type DataAttributes = {
data: {
[key: string]: string | number;
},
} & {
dataset: never, // the dataset property itself is readonly
};
type Attributes<Type> = Partial<Type & DataAttributes>;
type Children = Array<HTMLElement | string | null> | HTMLElement | string | number | null;
/**
* example usage:
*
* const props = {className: 'btn', onclick: async (e) => alert('hi')};
* const btn = elem('button', props, ['download']);
* document.body.append(btn);
*
* @param {string} name
* @param {HTMLElement.prototype} props
* @param {Array<Node> | string | number} children
* @return HTMLElement
*/
export const elem = <Name extends keyof HTMLElementTagNameMap>(
name: Extract<Name, keyof HTMLElementTagNameMap>,
attrs?: Attributes<HTMLElementTagNameMap[Name]>,
children?: Children,
): HTMLElementTagNameMap[Name] => {
const el = document.createElement(name);
if (attrs) {
const {data, ...props} = attrs;
Object.assign(el, props);
if (data) {
Object.entries(data).forEach(([key, value]) => {
el.dataset[key] = value as string;
});
}
}
if (children != null) {
if (Array.isArray(children)) {
el.append(...children.filter(isNotNull));
} else {
switch (typeof children) {
case 'number':
el.append(`${children}`);
break;
case 'string':
el.append(children);
break;
default:
if (children instanceof Element) {
el.append(children);
break;
}
console.error(`expected element, string or number but got ${typeof children}`, children);
}
}
}
return el;
};
/** freeze global page scrolling */
export const lockScroll = () => document.body.style.overflow = 'hidden';
/** free global page scrolling */
export const unlockScroll = () => document.body.style.removeProperty('overflow');
/**
* example usage:
*
* const [content, {firstLink}] = parseTextContent('Hi<br>click https://nostr.ch/');
*
* @param {string} content
* @returns [Array<string | HTMLElement>, {firstLink: href}]
*/
export const parseTextContent = (
content: string,
): [
Array<string | HTMLAnchorElement | HTMLBRElement>,
{firstLink: string | undefined},
] => {
let firstLink: string | undefined;
const parsedContent = content
.trim()
.replaceAll(/\n{3,}/g, '\n\n')
.split('\n')
.map(line => {
const words = line.split(/\s/);
return words.map(word => {
if (word.match(/^ln(tbs?|bcr?t?)[a-z0-9]+$/g)) {
return elem('a', {
href: `lightning:${word}`
}, `lightning:${word.slice(0, 24)}`);
}
if (!word.match(/^(https?:\/\/|www\.)\S*/)) {
return word;
}
try {
if (!word.startsWith('http')) {
word = 'https://' + word;
}
const url = new URL(word);
if (!isValidURL(url)) {
return word;
}
firstLink = firstLink || url.href;
return elem('a', {
href: url.href,
target: '_blank',
rel: 'noopener noreferrer'
}, url.href.slice(url.protocol.length + 2));
} catch (err) {
return word;
}
})
.reduce((acc, word) => [...acc, word, ' '], []);
})
.reduce((acc, words) => [...acc, ...words, elem('br')], []);
return [
parsedContent,
{firstLink}
];
};
/**
* creates a small profile image
* @param text to pass pubkey
* @returns HTMLCanvasElement | null
*/
export const elemCanvas = (text: string) => {
const canvas = elem('canvas', {
height: 80,
width: 80,
data: {pubkey: text}
});
const context = canvas.getContext('2d');
if (!context) {
return null;
}
const color = `#${text.slice(0, 6)}`;
context.fillStyle = color;
context.fillRect(0, 0, 80, 80);
context.fillStyle = '#111';
context.fillRect(0, 50, 80, 32);
context.font = 'bold 18px monospace';
if (color === '#000000') {
context.fillStyle = '#fff';
}
context.fillText(text.slice(0, 8), 2, 46);
return canvas;
};
/**
* creates a placeholder element that animates the height to 0
* @param element to get the initial height from
* @returns HTMLDivElement
*/
export const elemShrink = (el: HTMLElement) => {
const height = el.style.height || el.getBoundingClientRect().height;
const shrink = elem('div', {className: 'shrink-out'});
shrink.style.height = `${height}px`;
shrink.addEventListener('animationend', () => shrink.remove(), {once: true});
return shrink;
};
export const updateElemHeight = (
el: HTMLInputElement | HTMLTextAreaElement
) => {
el.style.removeProperty('height');
if (el.value) {
el.style.paddingBottom = '0';
el.style.paddingTop = '0';
el.style.height = el.scrollHeight + 'px';
el.style.removeProperty('padding-bottom');
el.style.removeProperty('padding-top');
}
};
export const elemArticle = (
content: Array<HTMLElement>,
attrs: Attributes<HTMLElementTagNameMap['div']> = {}
) => {
const className = attrs.className ? ['mbox', attrs?.className].join(' ') : 'mbox';
return elem('article', {...attrs, className}, content);
};

@ -1,3 +1,29 @@
/**
* throttle and debounce given function in regular time interval,
* but with the difference that the last call will be debounced and therefore never missed.
* @param {*} function to throttle and debounce
* @param {*} time desired interval to execute function
* @returns callback
*/
export const bounce = (
fn: () => void,
time: number,
) => {
let throttle: number | undefined;
let debounce: number | undefined;
return (/*...args*/) => {
if (throttle) {
clearTimeout(debounce);
debounce = setTimeout(() => fn(/*...args*/), time);
return;
}
fn(/*...args*/);
throttle = setTimeout(() => {
clearTimeout(throttle);
}, time);
};
};
/** /**
* Intl.DateTimeFormat object * Intl.DateTimeFormat object
* *
@ -22,7 +48,10 @@ export const dateTime = new Intl.DateTimeFormat('de-ch' /* navigator.language */
* console.log(timeAgo(new Date(Date.now() - 10000))); * console.log(timeAgo(new Date(Date.now() - 10000)));
* *
*/ */
const timeAgo = (time, locale = 'en') => { const timeAgo = (
time: Date,
locale: string = 'en',
) => {
const relativeTime = new Intl.RelativeTimeFormat(locale, { const relativeTime = new Intl.RelativeTimeFormat(locale, {
numeric: 'auto', numeric: 'auto',
style: 'long', style: 'long',
@ -55,7 +84,7 @@ const timeAgo = (time, locale = 'en') => {
* @param {time} date object to format * @param {time} date object to format
* @return string * @return string
*/ */
export const formatTime = (time) => { export const formatTime = (time: Date) => {
const yesterday = new Date(Date.now() - (24 * 60 * 60 * 1000)); const yesterday = new Date(Date.now() - (24 * 60 * 60 * 1000));
if (time > yesterday) { if (time > yesterday) {
return timeAgo(time); return timeAgo(time);

@ -0,0 +1,65 @@
export const getHost = (url: string) => {
try {
return new URL(url).host;
} catch(err) {
return err;
}
};
export const isHttpUrl = (url: string) => {
try {
return ['http:', 'https:'].includes(new URL(url).protocol);
} catch (err) {
return false;
}
};
export const isWssUrl = (url: string) => {
try {
return 'wss:' === new URL(url).protocol;
} catch (err) {
return false;
}
};
export const getNoxyUrl = (
type: 'data' | 'meta',
url: string,
id: string,
relay: string,
) => {
if (!isHttpUrl(url)) {
return false;
}
const link = new URL(`https://noxy.nostr.ch/${type}`);
link.searchParams.set('id', id);
link.searchParams.set('relay', relay);
link.searchParams.set('url', url);
return link;
};
export const isValidURL = (url: URL) => {
if (!['http:', 'https:'].includes(url.protocol)) {
return false;
}
if (!['', '443', '80'].includes(url.port)) {
return false;
}
if (url.hostname === 'localhost') {
return false;
}
const lastDot = url.hostname.lastIndexOf('.');
if (lastDot < 1) {
return false;
}
if (url.hostname.slice(lastDot) === '.local') {
return false;
}
if (url.hostname.slice(lastDot + 1).match(/^[\d]+$/)) { // there should be no tld with numbers, possible ipv4
return false;
}
if (url.hostname.includes(':')) { // possibly an ipv6 addr; certainly an invalid hostname
return false;
}
return true;
};

@ -0,0 +1,102 @@
import {elem} from './utils/dom';
type ViewOptions = {
type: 'feed'
} | {
type: 'note';
id: string;
} | {
type: 'profile';
id: string;
};
type DOMMap = {
[id: string]: HTMLElement
};
type Container = {
id: string;
options: ViewOptions,
view: HTMLElement;
content: HTMLDivElement;
dom: DOMMap;
};
const containers: Array<Container> = [];
let activeContainerIndex = -1;
export const getViewContent = () => containers[activeContainerIndex]?.content;
export const clearView = () => {
// TODO: this is clears the current view, but it should probably do this for all views
const domMap = containers[activeContainerIndex]?.dom;
Object.keys(domMap).forEach(eventId => delete domMap[eventId]);
getViewContent().replaceChildren();
};
export const getViewElem = (id: string) => {
return containers[activeContainerIndex]?.dom[id];
};
export const setViewElem = (id: string, node: HTMLElement) => {
const container = containers[activeContainerIndex];
if (container) {
container.dom[id] = node;
}
return node;
};
const mainContainer = document.querySelector('main') as HTMLElement;
const createContainer = (
route: string,
options: ViewOptions,
) => {
const content = elem('div', {className: 'content'});
const dom: DOMMap = {};
switch (options.type) {
case 'profile':
const header = elem('header', {},
elem('small', {}, route)
);
dom[options.id] = header;
content.append(header);
break;
case 'note':
break;
case 'feed':
break;
}
const view = elem('section', {className: 'view'}, [content]);
const container = {id: route, options, view, content, dom};
mainContainer.append(view);
containers.push(container);
return container;
};
type GetViewOptions = () => ViewOptions;
export const getViewOptions: GetViewOptions = () => containers[activeContainerIndex]?.options || {type: 'feed'};
export const view = (
route: string,
options: ViewOptions,
) => {
const active = containers[activeContainerIndex];
const nextContainer = containers.find(c => c.id === route) || createContainer(route, options);
const nextContainerIndex = containers.indexOf(nextContainer);
if (nextContainerIndex === activeContainerIndex) {
return;
}
if (active) {
nextContainer.view.classList.add('view-next');
}
requestAnimationFrame(() => {
requestAnimationFrame(() => {
nextContainer.view.classList.remove('view-next', 'view-prev');
});
active?.view.classList.add(nextContainerIndex < activeContainerIndex ? 'view-next' : 'view-prev');
activeContainerIndex = nextContainerIndex;
});
};

@ -1,7 +1,7 @@
import {getEventHash} from 'nostr-tools'; import {getEventHash} from 'nostr-tools';
import {zeroLeadingBitsCount} from './cryptoutils.js'; import {zeroLeadingBitsCount} from './utils/crypto';
function mine(event, difficulty, timeout = 5) { const mine = (event, difficulty, timeout = 5) => {
const max = 256; // arbitrary const max = 256; // arbitrary
if (!Number.isInteger(difficulty) || difficulty < 0 || difficulty > max) { if (!Number.isInteger(difficulty) || difficulty < 0 || difficulty > max) {
throw new Error(`difficulty must be an integer between 0 and ${max}`); throw new Error(`difficulty must be an integer between 0 and ${max}`);
@ -26,12 +26,12 @@ function mine(event, difficulty, timeout = 5) {
const id = getEventHash(event); const id = getEventHash(event);
if (zeroLeadingBitsCount(id) === difficulty) { if (zeroLeadingBitsCount(id) === difficulty) {
console.timeEnd('pow'); console.timeEnd('pow');
return event; return {id, ...event};
} }
} }
} };
addEventListener('message', async (msg) => { addEventListener('message', (msg) => {
const {difficulty, event, timeout} = msg.data; const {difficulty, event, timeout} = msg.data;
try { try {
const minedEvent = mine(event, difficulty, timeout); const minedEvent = mine(event, difficulty, timeout);

@ -0,0 +1,154 @@
import {signEvent} from 'nostr-tools';
import {elemShrink, updateElemHeight} from './utils/dom';
import {powEvent} from './system';
import {config} from './settings';
import {publish} from './relays';
// form used to write and publish textnotes for replies and new notes
const writeForm = document.querySelector('#writeForm') as HTMLFormElement;
const writeInput = document.querySelector('textarea[name="message"]') as HTMLTextAreaElement;
// overlay for writing new text notes
const publishView = document.querySelector('#newNote') as HTMLElement;
const openWriteView = () => {
publishView.append(writeForm);
if (writeInput.value.trimRight()) {
writeInput.style.removeProperty('height');
}
requestAnimationFrame(() => {
updateElemHeight(writeInput);
writeInput.focus();
});
publishView.removeAttribute('hidden');
};
export const closePublishView = () => publishView.hidden = true;
export const togglePublishView = () => {
if (publishView.hidden) {
localStorage.removeItem('reply_to'); // should it forget old replyto context?
openWriteView();
} else {
publishView.hidden = true;
}
};
const appendReplyForm = (el: HTMLElement) => {
writeForm.before(elemShrink(writeInput));
writeInput.blur();
writeInput.style.removeProperty('height');
el.after(writeForm);
if (writeInput.value && !writeInput.value.trimRight()) {
writeInput.value = '';
} else {
requestAnimationFrame(() => updateElemHeight(writeInput));
}
requestAnimationFrame(() => writeInput.focus());
};
const closeWriteInput = () => writeInput.blur();
export const openWriteInput = (
button: HTMLElement,
id: string,
) => {
appendReplyForm(button.closest('.buttons') as HTMLElement);
localStorage.setItem('reply_to', id);
};
export const toggleWriteInput = (
button: HTMLElement,
id: string,
) => {
if (id && localStorage.getItem('reply_to') === id) {
closeWriteInput();
return;
}
appendReplyForm(button.closest('.buttons') as HTMLElement);
localStorage.setItem('reply_to', id);
};
// const updateWriteInputHeight = () => updateElemHeight(writeInput);
writeInput.addEventListener('focusout', () => {
const reply_to = localStorage.getItem('reply_to');
if (reply_to && writeInput.value === '') {
writeInput.addEventListener('transitionend', (event) => {
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
writeForm.after(elemShrink(writeInput));
writeForm.remove();
localStorage.removeItem('reply_to');
}
}, {once: true});
}
});
// document.body.addEventListener('keyup', (e) => {
// if (e.key === 'Escape') {
// hideNewMessage(true);
// }
// });
const sendStatus = document.querySelector('#sendstatus') as HTMLElement;
const publishBtn = document.querySelector('#publish') as HTMLButtonElement;
const onSendError = (err: Error) => sendStatus.textContent = err.message;
writeForm.addEventListener('submit', async (e) => {
e.preventDefault();
const privatekey = localStorage.getItem('private_key');
if (!config.pubkey || !privatekey) {
return onSendError(new Error('no pubkey/privatekey'));
}
const content = writeInput.value.trimRight();
if (!content) {
return onSendError(new Error('message is empty'));
}
const replyTo = localStorage.getItem('reply_to');
const close = () => {
sendStatus.textContent = '';
writeInput.value = '';
writeInput.style.removeProperty('height');
publishBtn.disabled = true;
if (replyTo) {
localStorage.removeItem('reply_to');
publishView.append(writeForm);
}
publishView.hidden = true;
};
const tags = replyTo ? [['e', replyTo]] : []; // , eventRelayMap[replyTo][0]
const newEvent = await powEvent({
kind: 1,
content,
pubkey: config.pubkey,
tags,
created_at: Math.floor(Date.now() * 0.001),
}, {
difficulty: config.difficulty,
statusElem: sendStatus,
timeout: config.timeout,
}).catch(console.warn);
if (!newEvent) {
close();
return;
}
const sig = signEvent(newEvent, privatekey);
// TODO validateEvent
if (sig) {
sendStatus.textContent = 'publishing…';
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 = '');

@ -0,0 +1,18 @@
{
"compilerOptions": {
"alwaysStrict": true,
"moduleResolution": "node",
"noImplicitAny": true,
"noImplicitThis": true,
"strictBindCallApply": true,
"strictFunctionTypes": false,
"strictNullChecks": true,
"target": "es2022"
},
"exclude": [
"dist",
"esbuildconf.js",
"node_modules",
"**/*.test.ts"
]
}
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