feat: add proposed group solution
This commit is contained in:
Patrick Charrier
2
.gitignore
vendored
Normal file
2
.gitignore
vendored
Normal file
@@ -0,0 +1,2 @@
|
||||
dist
|
||||
node_modules
|
||||
43
README.md
43
README.md
@@ -1 +1,44 @@
|
||||
# P2P Poll App
|
||||
|
||||
A peer-to-peer polling application where users create and vote on polls without any central server. All data syncs directly between browsers using WebRTC and CRDTs.
|
||||
|
||||
## Features
|
||||
|
||||
- **Real-time P2P sync** — poll options and votes sync instantly across all connected peers via WebRTC
|
||||
- **Collaborative poll title** — editable title that syncs between all participants
|
||||
- **One vote per user** — each peer gets a stable ID, enforcing one vote per person per option
|
||||
- **Vote/Unvote toggle** — change your mind anytime
|
||||
- **Connection status** — see when you're connected and how many peers are in the room
|
||||
- **Shareable polls** — share via URL with `?room=your-poll-name`
|
||||
- **No backend required** — runs entirely in the browser
|
||||
|
||||
## Tech Stack
|
||||
|
||||
- [Yjs](https://yjs.dev/) — CRDT library for conflict-free shared state
|
||||
- [y-webrtc](https://github.com/yjs/y-webrtc) — WebRTC provider for peer-to-peer connections
|
||||
- [Vite](https://vitejs.dev/) — Development server and build tool
|
||||
- Vanilla JavaScript — no framework dependencies
|
||||
|
||||
## Getting Started
|
||||
|
||||
```bash
|
||||
npm install
|
||||
npm run dev
|
||||
```
|
||||
|
||||
Open `http://localhost:5173/?room=my-poll` in multiple browser tabs to test.
|
||||
|
||||
To test across devices on the same network:
|
||||
|
||||
```bash
|
||||
npm run dev -- --host
|
||||
```
|
||||
|
||||
Then open the URL shown in the terminal on other devices.
|
||||
|
||||
## How It Works
|
||||
|
||||
1. Each browser tab creates a Yjs document and connects to other peers via WebRTC
|
||||
2. Poll options and votes are stored in Yjs shared data types (Y.Map)
|
||||
3. Changes propagate automatically to all connected peers using CRDTs
|
||||
4. A public signaling server handles peer discovery; all poll data flows directly between browsers
|
||||
47
index.html
Normal file
47
index.html
Normal file
@@ -0,0 +1,47 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
<title>P2P Poll</title>
|
||||
<link rel="stylesheet" href="/src/style.css">
|
||||
</head>
|
||||
<body>
|
||||
<div id="app">
|
||||
<header>
|
||||
<h1>P2P Poll</h1>
|
||||
<div id="status">
|
||||
<span id="connection-status" class="connecting">Connecting...</span>
|
||||
<span id="peer-count">1 peer</span>
|
||||
</div>
|
||||
</header>
|
||||
|
||||
<div id="poll-title-section">
|
||||
<input type="text" id="poll-title" placeholder="Click to name this poll..." maxlength="120">
|
||||
</div>
|
||||
|
||||
<main>
|
||||
<div id="add-option">
|
||||
<input type="text" id="option-input" placeholder="Add a poll option..." maxlength="100">
|
||||
<button id="add-btn">Add</button>
|
||||
</div>
|
||||
|
||||
<div id="total-votes">Total votes: <span id="total-count">0</span></div>
|
||||
|
||||
<div id="poll-options"></div>
|
||||
|
||||
<p id="empty-state">No options yet. Add one above!</p>
|
||||
</main>
|
||||
|
||||
<footer id="share-section">
|
||||
<p>Share this poll:</p>
|
||||
<div id="share-url-container">
|
||||
<code id="share-url"></code>
|
||||
<button id="copy-btn">Copy</button>
|
||||
</div>
|
||||
</footer>
|
||||
</div>
|
||||
|
||||
<script type="module" src="/src/main.js"></script>
|
||||
</body>
|
||||
</html>
|
||||
1437
package-lock.json
generated
Normal file
1437
package-lock.json
generated
Normal file
File diff suppressed because it is too large
Load Diff
18
package.json
Normal file
18
package.json
Normal file
@@ -0,0 +1,18 @@
|
||||
{
|
||||
"name": "p2p-poll",
|
||||
"private": true,
|
||||
"version": "1.0.0",
|
||||
"type": "module",
|
||||
"scripts": {
|
||||
"dev": "vite",
|
||||
"build": "vite build",
|
||||
"preview": "vite preview"
|
||||
},
|
||||
"dependencies": {
|
||||
"yjs": "^13.6.0",
|
||||
"y-webrtc": "^10.3.0"
|
||||
},
|
||||
"devDependencies": {
|
||||
"vite": "^6.0.0"
|
||||
}
|
||||
}
|
||||
183
src/main.js
Normal file
183
src/main.js
Normal file
@@ -0,0 +1,183 @@
|
||||
import * as Y from 'yjs';
|
||||
import { WebrtcProvider } from 'y-webrtc';
|
||||
|
||||
// --- Peer ID (stable across reloads) ---
|
||||
|
||||
function getOrCreatePeerId() {
|
||||
let id = localStorage.getItem('peer-id');
|
||||
if (!id) {
|
||||
id = crypto.randomUUID();
|
||||
localStorage.setItem('peer-id', id);
|
||||
}
|
||||
return id;
|
||||
}
|
||||
|
||||
const peerId = getOrCreatePeerId();
|
||||
|
||||
// --- Room name from URL ---
|
||||
|
||||
function getRoomName() {
|
||||
const params = new URLSearchParams(window.location.search);
|
||||
return params.get('room') || 'default-poll';
|
||||
}
|
||||
|
||||
const roomName = getRoomName();
|
||||
|
||||
// --- Yjs setup ---
|
||||
|
||||
const ydoc = new Y.Doc();
|
||||
const provider = new WebrtcProvider(roomName, ydoc);
|
||||
const yOptions = ydoc.getMap('poll-options');
|
||||
const yTitle = ydoc.getText('poll-title');
|
||||
|
||||
// --- Data operations ---
|
||||
|
||||
function addOption(name) {
|
||||
const id = crypto.randomUUID();
|
||||
const optionMap = new Y.Map();
|
||||
optionMap.set('name', name);
|
||||
optionMap.set('votes', new Y.Map());
|
||||
yOptions.set(id, optionMap);
|
||||
}
|
||||
|
||||
function toggleVote(optionId) {
|
||||
const optionMap = yOptions.get(optionId);
|
||||
if (!optionMap) return;
|
||||
const votes = optionMap.get('votes');
|
||||
if (votes.has(peerId)) {
|
||||
votes.delete(peerId);
|
||||
} else {
|
||||
votes.set(peerId, true);
|
||||
}
|
||||
}
|
||||
|
||||
// --- Poll title (collaborative) ---
|
||||
|
||||
function bindTitle() {
|
||||
const titleInput = document.getElementById('poll-title');
|
||||
|
||||
yTitle.observe(() => {
|
||||
if (document.activeElement !== titleInput) {
|
||||
titleInput.value = yTitle.toString();
|
||||
}
|
||||
});
|
||||
|
||||
titleInput.addEventListener('input', () => {
|
||||
ydoc.transact(() => {
|
||||
yTitle.delete(0, yTitle.length);
|
||||
yTitle.insert(0, titleInput.value);
|
||||
});
|
||||
});
|
||||
|
||||
titleInput.value = yTitle.toString();
|
||||
}
|
||||
|
||||
// --- UI rendering ---
|
||||
|
||||
const container = document.getElementById('poll-options');
|
||||
const emptyState = document.getElementById('empty-state');
|
||||
const totalCountEl = document.getElementById('total-count');
|
||||
|
||||
function render() {
|
||||
container.innerHTML = '';
|
||||
|
||||
const entries = [];
|
||||
let totalVotes = 0;
|
||||
|
||||
yOptions.forEach((optionMap, id) => {
|
||||
const voteCount = optionMap.get('votes').size;
|
||||
totalVotes += voteCount;
|
||||
entries.push({
|
||||
id,
|
||||
name: optionMap.get('name'),
|
||||
votes: voteCount,
|
||||
voted: optionMap.get('votes').has(peerId),
|
||||
});
|
||||
});
|
||||
|
||||
entries.sort((a, b) => b.votes - a.votes || a.name.localeCompare(b.name));
|
||||
|
||||
totalCountEl.textContent = totalVotes;
|
||||
emptyState.className = entries.length > 0 ? 'hidden' : '';
|
||||
|
||||
for (const entry of entries) {
|
||||
const div = document.createElement('div');
|
||||
div.className = 'poll-option';
|
||||
|
||||
const nameSpan = document.createElement('span');
|
||||
nameSpan.className = 'option-name';
|
||||
nameSpan.textContent = entry.name;
|
||||
|
||||
const voteCount = document.createElement('span');
|
||||
voteCount.className = 'vote-count';
|
||||
voteCount.textContent = entry.votes;
|
||||
|
||||
const voteBtn = document.createElement('button');
|
||||
voteBtn.className = entry.voted ? 'vote-btn voted' : 'vote-btn';
|
||||
voteBtn.textContent = entry.voted ? 'Unvote' : 'Vote';
|
||||
voteBtn.addEventListener('click', () => toggleVote(entry.id));
|
||||
|
||||
div.append(nameSpan, voteCount, voteBtn);
|
||||
container.appendChild(div);
|
||||
}
|
||||
}
|
||||
|
||||
// Re-render on any change in the shared state
|
||||
yOptions.observeDeep(() => render());
|
||||
|
||||
// --- Add option handlers ---
|
||||
|
||||
const input = document.getElementById('option-input');
|
||||
const addBtn = document.getElementById('add-btn');
|
||||
|
||||
addBtn.addEventListener('click', () => {
|
||||
const name = input.value.trim();
|
||||
if (name) {
|
||||
addOption(name);
|
||||
input.value = '';
|
||||
}
|
||||
});
|
||||
|
||||
input.addEventListener('keydown', (e) => {
|
||||
if (e.key === 'Enter') addBtn.click();
|
||||
});
|
||||
|
||||
// --- Connection status & peer count ---
|
||||
|
||||
const statusEl = document.getElementById('connection-status');
|
||||
const peerCountEl = document.getElementById('peer-count');
|
||||
|
||||
provider.on('synced', ({ synced }) => {
|
||||
statusEl.textContent = synced ? 'Connected' : 'Connecting...';
|
||||
statusEl.className = synced ? 'connected' : 'connecting';
|
||||
});
|
||||
|
||||
function updatePeerCount() {
|
||||
const count = provider.awareness.getStates().size;
|
||||
peerCountEl.textContent = `${count} peer${count !== 1 ? 's' : ''}`;
|
||||
}
|
||||
|
||||
provider.awareness.on('change', updatePeerCount);
|
||||
updatePeerCount();
|
||||
|
||||
// --- Share section ---
|
||||
|
||||
function initShareSection() {
|
||||
const shareUrl = document.getElementById('share-url');
|
||||
const copyBtn = document.getElementById('copy-btn');
|
||||
const url = `${window.location.origin}${window.location.pathname}?room=${roomName}`;
|
||||
shareUrl.textContent = url;
|
||||
|
||||
copyBtn.addEventListener('click', () => {
|
||||
navigator.clipboard.writeText(url).then(() => {
|
||||
copyBtn.textContent = 'Copied!';
|
||||
setTimeout(() => { copyBtn.textContent = 'Copy'; }, 2000);
|
||||
});
|
||||
});
|
||||
}
|
||||
|
||||
// --- Initialize ---
|
||||
|
||||
bindTitle();
|
||||
initShareSection();
|
||||
render();
|
||||
257
src/style.css
Normal file
257
src/style.css
Normal file
@@ -0,0 +1,257 @@
|
||||
:root {
|
||||
--bg: #0b0a14;
|
||||
--surface: #1f1740;
|
||||
--surface-alt: #2a174f;
|
||||
--text: #e8e3ff;
|
||||
--text-secondary: #b8a7d2;
|
||||
--text-muted: #8a7aaa;
|
||||
--accent: #6bd3ff;
|
||||
--accent-hover: #4fc3f7;
|
||||
--accent-light: rgba(107, 211, 255, 0.1);
|
||||
--border: #2a1950;
|
||||
--shadow: rgba(0, 0, 0, 0.3);
|
||||
--success: #4caf50;
|
||||
--warning: #ff9800;
|
||||
}
|
||||
|
||||
* {
|
||||
margin: 0;
|
||||
padding: 0;
|
||||
box-sizing: border-box;
|
||||
}
|
||||
|
||||
body {
|
||||
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
|
||||
background: var(--bg);
|
||||
color: var(--text);
|
||||
min-height: 100vh;
|
||||
}
|
||||
|
||||
#app {
|
||||
max-width: 600px;
|
||||
margin: 0 auto;
|
||||
padding: 2rem 1rem;
|
||||
}
|
||||
|
||||
header {
|
||||
display: flex;
|
||||
justify-content: space-between;
|
||||
align-items: center;
|
||||
margin-bottom: 1.5rem;
|
||||
}
|
||||
|
||||
h1 {
|
||||
font-size: 1.5rem;
|
||||
}
|
||||
|
||||
#status {
|
||||
display: flex;
|
||||
gap: 1rem;
|
||||
font-size: 0.85rem;
|
||||
color: var(--text-secondary);
|
||||
}
|
||||
|
||||
#connection-status::before {
|
||||
content: "";
|
||||
display: inline-block;
|
||||
width: 8px;
|
||||
height: 8px;
|
||||
border-radius: 50%;
|
||||
margin-right: 4px;
|
||||
vertical-align: middle;
|
||||
}
|
||||
|
||||
#connection-status.connected::before {
|
||||
background: var(--success);
|
||||
}
|
||||
|
||||
#connection-status.connecting::before {
|
||||
background: var(--warning);
|
||||
}
|
||||
|
||||
/* Poll title */
|
||||
|
||||
#poll-title-section {
|
||||
margin-bottom: 1.5rem;
|
||||
}
|
||||
|
||||
#poll-title {
|
||||
width: 100%;
|
||||
font-size: 1.3rem;
|
||||
font-weight: 600;
|
||||
border: none;
|
||||
border-bottom: 2px solid transparent;
|
||||
background: transparent;
|
||||
color: var(--text);
|
||||
padding: 0.4rem 0;
|
||||
outline: none;
|
||||
}
|
||||
|
||||
#poll-title::placeholder {
|
||||
color: var(--text-muted);
|
||||
}
|
||||
|
||||
#poll-title:hover {
|
||||
border-bottom-color: var(--border);
|
||||
}
|
||||
|
||||
#poll-title:focus {
|
||||
border-bottom-color: var(--accent);
|
||||
}
|
||||
|
||||
/* Add option */
|
||||
|
||||
#add-option {
|
||||
display: flex;
|
||||
gap: 0.5rem;
|
||||
margin-bottom: 1rem;
|
||||
}
|
||||
|
||||
#option-input {
|
||||
flex: 1;
|
||||
padding: 0.6rem 0.8rem;
|
||||
border: 1px solid var(--border);
|
||||
border-radius: 6px;
|
||||
font-size: 1rem;
|
||||
outline: none;
|
||||
background: var(--surface);
|
||||
color: var(--text);
|
||||
}
|
||||
|
||||
#option-input::placeholder {
|
||||
color: var(--text-muted);
|
||||
}
|
||||
|
||||
#option-input:focus {
|
||||
border-color: var(--accent);
|
||||
}
|
||||
|
||||
#add-btn {
|
||||
padding: 0.6rem 1.2rem;
|
||||
background: var(--accent);
|
||||
color: var(--bg);
|
||||
border: none;
|
||||
border-radius: 6px;
|
||||
font-size: 1rem;
|
||||
font-weight: 600;
|
||||
cursor: pointer;
|
||||
}
|
||||
|
||||
#add-btn:hover {
|
||||
background: var(--accent-hover);
|
||||
}
|
||||
|
||||
/* Total votes */
|
||||
|
||||
#total-votes {
|
||||
font-size: 0.85rem;
|
||||
color: var(--text-secondary);
|
||||
margin-bottom: 1rem;
|
||||
font-weight: 500;
|
||||
}
|
||||
|
||||
/* Poll options */
|
||||
|
||||
.poll-option {
|
||||
display: flex;
|
||||
align-items: center;
|
||||
background: var(--surface);
|
||||
padding: 0.8rem 1rem;
|
||||
border-radius: 8px;
|
||||
margin-bottom: 0.5rem;
|
||||
border: 1px solid var(--border);
|
||||
}
|
||||
|
||||
.option-name {
|
||||
flex: 1;
|
||||
font-size: 1rem;
|
||||
}
|
||||
|
||||
.vote-count {
|
||||
font-size: 0.9rem;
|
||||
font-weight: 600;
|
||||
color: var(--text-secondary);
|
||||
margin-right: 0.75rem;
|
||||
min-width: 1.5rem;
|
||||
text-align: center;
|
||||
}
|
||||
|
||||
.vote-btn {
|
||||
padding: 0.4rem 1rem;
|
||||
border: 2px solid var(--accent);
|
||||
border-radius: 6px;
|
||||
font-size: 0.85rem;
|
||||
cursor: pointer;
|
||||
background: transparent;
|
||||
color: var(--accent);
|
||||
}
|
||||
|
||||
.vote-btn:hover {
|
||||
background: var(--accent-light);
|
||||
}
|
||||
|
||||
.vote-btn.voted {
|
||||
background: var(--accent);
|
||||
color: var(--bg);
|
||||
}
|
||||
|
||||
.vote-btn.voted:hover {
|
||||
background: var(--accent-hover);
|
||||
}
|
||||
|
||||
/* Empty state */
|
||||
|
||||
#empty-state {
|
||||
text-align: center;
|
||||
color: var(--text-muted);
|
||||
padding: 2rem;
|
||||
}
|
||||
|
||||
#empty-state.hidden {
|
||||
display: none;
|
||||
}
|
||||
|
||||
/* Share section */
|
||||
|
||||
#share-section {
|
||||
margin-top: 2rem;
|
||||
padding-top: 1.5rem;
|
||||
border-top: 1px solid var(--border);
|
||||
font-size: 0.85rem;
|
||||
color: var(--text-secondary);
|
||||
}
|
||||
|
||||
#share-url-container {
|
||||
display: flex;
|
||||
gap: 0.5rem;
|
||||
margin-top: 0.5rem;
|
||||
align-items: center;
|
||||
}
|
||||
|
||||
#share-url {
|
||||
flex: 1;
|
||||
background: var(--surface);
|
||||
padding: 0.5rem 0.75rem;
|
||||
border-radius: 6px;
|
||||
border: 1px solid var(--border);
|
||||
font-size: 0.8rem;
|
||||
overflow: hidden;
|
||||
text-overflow: ellipsis;
|
||||
white-space: nowrap;
|
||||
color: var(--text);
|
||||
}
|
||||
|
||||
#copy-btn {
|
||||
padding: 0.5rem 1rem;
|
||||
background: var(--surface);
|
||||
border: 1px solid var(--border);
|
||||
border-radius: 6px;
|
||||
cursor: pointer;
|
||||
font-size: 0.8rem;
|
||||
color: var(--text-secondary);
|
||||
}
|
||||
|
||||
#copy-btn:hover {
|
||||
background: var(--accent-light);
|
||||
color: var(--accent);
|
||||
}
|
||||
Reference in New Issue
Block a user