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dist
node_modules

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# P2P Poll App # P2P Poll App
A peer-to-peer polling application built with React, TypeScript, Tailwind CSS, Node.js, Yjs, and WebSocket for real-time collaborative voting. 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.
**Users can create polls, add answers, and vote in real-time with automatic P2P synchronization across all connected clients.**
## Architecture
**Hybrid P2P Approach:**
- Backend serves as both a Yjs WebSocket provider (for state synchronization) and signaling server (for WebRTC peer discovery)
- Clients sync poll data via Yjs CRDT for conflict-free merging
- Direct P2P connections via WebRTC for real-time updates when possible
- Server fallback ensures reliability when P2P fails
## Tech Stack
**Backend:**
- Node.js + TypeScript
- Express.js
- WebSocket (ws)
- y-websocket (Yjs WebSocket provider)
- CORS support
**Frontend:**
- React 18 + TypeScript
- Vite (build tool)
- Tailwind CSS
- Yjs (CRDT library)
- y-websocket (server sync)
- y-webrtc (P2P sync)
- lucide-react (icons)
## Project Structure
```
quicgroup/
├── server/ # Backend Node.js server
│ ├── src/
│ │ ├── index.ts # Main server entry
│ │ ├── yjs-server.ts # Yjs WebSocket provider
│ │ ├── signaling-server.ts # WebRTC signaling
│ │ ├── types/ # TypeScript types
│ │ └── utils/ # Utilities
│ ├── package.json
│ └── tsconfig.json
└── frontend/ # React frontend
├── src/
│ ├── components/ # React components
│ ├── hooks/ # Custom React hooks
│ ├── lib/ # Yjs setup and utilities
│ ├── types/ # TypeScript types
│ └── styles/ # CSS styles
├── package.json
└── vite.config.ts
```
## Setup Instructions
### Prerequisites
- Node.js 18+ and npm
### Backend Setup
1. Navigate to server directory:
```bash
cd server
```
2. Install dependencies:
```bash
npm install
```
3. Copy environment file:
```bash
cp .env.example .env
```
4. Start the development server:
```bash
npm run dev
```
The server will run on `http://localhost:3000` with:
- Yjs WebSocket: `ws://localhost:3000/yjs`
- Signaling WebSocket: `ws://localhost:3000/signal`
### Frontend Setup
1. Navigate to frontend directory:
```bash
cd frontend
```
2. Install dependencies:
```bash
npm install
```
3. Copy environment file (optional):
```bash
cp .env.example .env
```
4. Start the development server:
```bash
npm run dev
```
The frontend will run on `http://localhost:5173`
## Running the Application
1. **Start Backend** (Terminal 1):
```bash
cd server
npm run dev
```
2. **Start Frontend** (Terminal 2):
```bash
cd frontend
npm run dev
```
3. **Open Browser:**
- Navigate to `http://localhost:5173`
- Open multiple tabs/windows to test P2P synchronization
## Features ## Features
### Dynamic Poll Creation - **Real-time P2P sync** — poll options and votes sync instantly across all connected peers via WebRTC
- **Create Polls** - Any user can create new polls with custom questions - **Collaborative poll title** — editable title that syncs between all participants
- **Add Answers** - Anyone can add answer options to any poll - **One vote per user** — each peer gets a stable ID, enforcing one vote per person per option
- **Real-time Voting** - Vote on options with instant updates across all clients - **Vote/Unvote toggle** — change your mind anytime
- **Smart Vote Tracking** - One vote per user per option (prevents duplicate voting) - **Connection status** — see when you're connected and how many peers are in the room
- **Visual Feedback** - Green border and " Voted" indicator on voted options - **Shareable polls** — share via URL with `?room=your-poll-name`
- **User Attribution** - See who created each poll and option - **No backend required** — runs entirely in the browser
- **Live Vote Counts** - See vote percentages and counts update in real-time
- **P2P Synchronization** - Uses Yjs CRDT for conflict-free state merging
- **Connection Status** - Visual indicator showing WebSocket and peer connections
- **Hybrid Architecture** - Combines WebSocket server sync with WebRTC P2P
- **Beautiful UI** - Modern gradient design with Tailwind CSS
## How to Use ## Tech Stack
### Create a Poll - [Yjs](https://yjs.dev/) — CRDT library for conflict-free shared state
1. Enter your question in the "Create a New Poll" form at the top - [y-webrtc](https://github.com/yjs/y-webrtc) — WebRTC provider for peer-to-peer connections
2. Click "Create Poll" - [Vite](https://vitejs.dev/) — Development server and build tool
3. Your poll appears instantly for all connected users - Vanilla JavaScript — no framework dependencies
### Add Answer Options ## Getting Started
1. Find the poll you want to add an answer to
2. Type your answer in the "Add a new option..." field
3. Click "Add"
4. Your answer appears instantly for all users
### Vote on Options ```bash
1. Click the vote button (thumbs up icon) on any option npm install
2. You can only vote once per option npm run dev
3. Voted options show a green border and " Voted" indicator ```
4. Vote counts update in real-time across all clients
### Multi-User Testing Open `http://localhost:5173/?room=my-poll` in multiple browser tabs to test.
1. Open multiple browser tabs/windows
2. Create polls from different tabs To test across devices on the same network:
3. Add answers from different tabs
4. Vote from different tabs ```bash
5. Watch real-time synchronization in action! npm run dev -- --host
```
Then open the URL shown in the terminal on other devices.
## How It Works ## How It Works
### CRDT Synchronization 1. Each browser tab creates a Yjs document and connects to other peers via WebRTC
The app uses Yjs (a CRDT library) to ensure all clients converge to the same state without conflicts: 2. Poll options and votes are stored in Yjs shared data types (Y.Map)
- Each client maintains a local Yjs document 3. Changes propagate automatically to all connected peers using CRDTs
- Changes are automatically synced via WebSocket to the server 4. A public signaling server handles peer discovery; all poll data flows directly between browsers
- WebRTC provides direct P2P connections between clients
- Yjs handles merge conflicts automatically
- One vote per user per option is enforced via `votedBy` tracking
## Data Model
```typescript
{
polls: Array<{
id: string,
question: string,
createdBy: string,
timestamp: number,
options: Array<{
id: string,
text: string,
votes: number,
votedBy: string[], // Tracks which users have voted
createdBy: string,
timestamp: number
}>
}>
}
```
## Testing P2P Functionality
1. Open the app in multiple browser tabs/windows
2. **Create polls** from different tabs - they appear everywhere instantly
3. **Add answer options** from different tabs to the same poll
4. **Vote** from different tabs - watch vote counts update in real-time
5. Try voting twice on the same option - it won't let you!
6. Check the connection status indicator for peer count
7. Verify visual feedback (green border) on options you've voted on
## Development
### Backend Scripts
- `npm run dev` - Start development server with hot reload
- `npm run build` - Build for production
- `npm start` - Run production build
### Frontend Scripts
- `npm run dev` - Start Vite dev server
- `npm run build` - Build for production
- `npm run preview` - Preview production build
## Environment Variables
### Backend (.env)
```
PORT=3000
YJS_WS_PORT=1234
NODE_ENV=development
CORS_ORIGIN=http://localhost:5173
```
### Frontend (.env)
```
VITE_WS_URL=ws://localhost:3000
```
## Components
### Frontend Components
- **PollView** - Main view showing all polls and create poll form
- **CreatePoll** - Form to create new polls
- **PollCard** - Individual poll display with metadata
- **OptionList** - List of answer options with vote tracking
- **AddOption** - Form to add new answer options
- **VoteButton** - Vote button with disabled state for voted options
- **ConnectionStatus** - Shows WebSocket and P2P connection status
### Key Functions
- `createPoll(question)` - Create a new poll
- `addOption(pollId, text)` - Add an option to a specific poll
- `vote(pollId, optionId)` - Vote on an option (one vote per user)
- `hasVoted(option)` - Check if current user has voted on an option
## User Tracking
Each user gets a unique ID stored in localStorage:
- Format: `user-xxxxxxxxx`
- Used to track poll/option creators
- Used to prevent duplicate voting
- Persists across browser sessions
## Future Enhancements
- [ ] Edit/delete polls and options
- [ ] User nicknames instead of IDs
- [ ] Poll expiration/closing
- [ ] Vote history and analytics
- [ ] Export poll results
- [ ] Persistent storage (database)
- [ ] Dark mode toggle
- [ ] Mobile responsive improvements
- [ ] Poll categories/tags
- [ ] Search/filter polls
## License
MIT

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VITE_WS_URL=ws://localhost:3000

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frontend/.gitignore vendored
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node_modules
dist
dist-ssr
*.local
.env
.DS_Store

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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<link rel="icon" type="image/svg+xml" href="/vite.svg" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>P2P Poll App</title>
</head>
<body>
<div id="root"></div>
<script type="module" src="/src/main.tsx"></script>
</body>
</html>

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{
"name": "p2p-poll-frontend",
"private": true,
"version": "1.0.0",
"type": "module",
"scripts": {
"dev": "vite",
"build": "tsc && vite build",
"preview": "vite preview",
"lint": "eslint . --ext ts,tsx --report-unused-disable-directives --max-warnings 0"
},
"dependencies": {
"react": "^18.2.0",
"react-dom": "^18.2.0",
"yjs": "^13.6.8",
"y-websocket": "^1.5.0",
"y-webrtc": "^10.2.5",
"lucide-react": "^0.294.0"
},
"devDependencies": {
"@types/react": "^18.2.37",
"@types/react-dom": "^18.2.15",
"@typescript-eslint/eslint-plugin": "^6.10.0",
"@typescript-eslint/parser": "^6.10.0",
"@vitejs/plugin-react": "^4.2.0",
"autoprefixer": "^10.4.16",
"eslint": "^8.53.0",
"eslint-plugin-react-hooks": "^4.6.0",
"eslint-plugin-react-refresh": "^0.4.4",
"postcss": "^8.4.31",
"tailwindcss": "^3.3.5",
"typescript": "^5.2.2",
"vite": "^5.0.0"
}
}

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export default {
plugins: {
tailwindcss: {},
autoprefixer: {},
},
}

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import { PollView } from './components/PollView';
import './styles/index.css';
function App() {
return <PollView />;
}
export default App;

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import { useState } from 'react';
import { Plus } from 'lucide-react';
interface AddOptionProps {
onAdd: (text: string) => void;
}
export function AddOption({ onAdd }: AddOptionProps) {
const [text, setText] = useState('');
const handleSubmit = (e: React.FormEvent) => {
e.preventDefault();
if (text.trim()) {
onAdd(text);
setText('');
}
};
return (
<form onSubmit={handleSubmit} className="flex gap-2">
<input
type="text"
value={text}
onChange={(e) => setText(e.target.value)}
placeholder="Add a new option..."
className="flex-1 px-4 py-3 rounded-lg bg-white/10 border border-white/20 text-white placeholder-white/50 focus:outline-none focus:ring-2 focus:ring-white/30"
/>
<button
type="submit"
disabled={!text.trim()}
className="px-6 py-3 bg-white text-purple-600 rounded-lg font-semibold hover:bg-white/90 disabled:opacity-50 disabled:cursor-not-allowed transition-all duration-200 flex items-center gap-2"
>
<Plus className="w-5 h-5" />
Add
</button>
</form>
);
}

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import { Wifi, WifiOff, Users } from 'lucide-react';
interface ConnectionStatusProps {
isConnected: boolean;
wsProvider: any;
webrtcProvider: any;
}
export function ConnectionStatus({ isConnected, wsProvider, webrtcProvider }: ConnectionStatusProps) {
const peerCount = webrtcProvider?.room?.peers?.size || 0;
return (
<div className="flex items-center gap-4 text-white/90 text-sm">
<div className="flex items-center gap-2">
{isConnected ? (
<>
<Wifi className="w-4 h-4 text-green-400" />
<span>Connected</span>
</>
) : (
<>
<WifiOff className="w-4 h-4 text-red-400" />
<span>Disconnected</span>
</>
)}
</div>
<div className="flex items-center gap-2">
<Users className="w-4 h-4" />
<span>{peerCount} peer{peerCount !== 1 ? 's' : ''}</span>
</div>
</div>
);
}

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import { useState } from 'react';
import { Plus } from 'lucide-react';
interface CreatePollProps {
onCreate: (question: string) => void;
}
export function CreatePoll({ onCreate }: CreatePollProps) {
const [question, setQuestion] = useState('');
const handleSubmit = (e: React.FormEvent) => {
e.preventDefault();
if (question.trim()) {
onCreate(question);
setQuestion('');
}
};
return (
<form onSubmit={handleSubmit} className="mb-8">
<div className="bg-white/10 backdrop-blur-lg rounded-2xl shadow-2xl p-6 border border-white/20">
<h2 className="text-xl font-bold text-white mb-4">Create a New Poll</h2>
<div className="flex gap-2">
<input
type="text"
value={question}
onChange={(e) => setQuestion(e.target.value)}
placeholder="Enter your question..."
className="flex-1 px-4 py-3 rounded-lg bg-white/10 border border-white/20 text-white placeholder-white/50 focus:outline-none focus:ring-2 focus:ring-white/30"
/>
<button
type="submit"
disabled={!question.trim()}
className="px-6 py-3 bg-white text-purple-600 rounded-lg font-semibold hover:bg-white/90 disabled:opacity-50 disabled:cursor-not-allowed transition-all duration-200 flex items-center gap-2"
>
<Plus className="w-5 h-5" />
Create Poll
</button>
</div>
</div>
</form>
);
}

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import { PollOption } from '../types/poll.types';
import { VoteButton } from './VoteButton';
interface OptionListProps {
options: PollOption[];
onVote: (optionId: string) => void;
hasVoted?: (option: PollOption) => boolean;
}
export function OptionList({ options, onVote, hasVoted }: OptionListProps) {
const totalVotes = options.reduce((sum, opt) => sum + opt.votes, 0);
const sortedOptions = [...options].sort((a, b) => b.votes - a.votes);
return (
<div className="space-y-3">
{sortedOptions.length === 0 ? (
<div className="text-center py-8 text-white/60">
No options yet. Add one to get started!
</div>
) : (
sortedOptions.map((option) => {
const percentage = totalVotes > 0 ? (option.votes / totalVotes) * 100 : 0;
const userHasVoted = hasVoted ? hasVoted(option) : false;
return (
<div
key={option.id}
className={`bg-white/10 backdrop-blur-sm rounded-lg p-4 border transition-all duration-200 ${
userHasVoted
? 'border-green-400/50 bg-green-400/10'
: 'border-white/20 hover:border-white/30'
}`}
>
<div className="flex items-center justify-between mb-2">
<span className="text-white font-medium text-lg">
{option.text}
{userHasVoted && <span className="ml-2 text-green-400 text-sm"> Voted</span>}
</span>
<VoteButton optionId={option.id} votes={option.votes} onVote={onVote} disabled={userHasVoted} />
</div>
<div className="w-full bg-white/10 rounded-full h-2 overflow-hidden">
<div
className="bg-gradient-to-r from-green-400 to-blue-500 h-full transition-all duration-500 ease-out"
style={{ width: `${percentage}%` }}
/>
</div>
<div className="mt-2 flex justify-between text-xs text-white/60">
<span>by {option.createdBy}</span>
<span>{percentage.toFixed(1)}%</span>
</div>
</div>
);
})
)}
</div>
);
}

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import { Poll } from '../types/poll.types';
import { AddOption } from './AddOption';
import { OptionList } from './OptionList';
import { User, Clock } from 'lucide-react';
interface PollCardProps {
poll: Poll;
onAddOption: (pollId: string, text: string) => void;
onVote: (pollId: string, optionId: string) => void;
hasVoted: (option: any) => boolean;
}
export function PollCard({ poll, onAddOption, onVote, hasVoted }: PollCardProps) {
const handleAddOption = (text: string) => {
onAddOption(poll.id, text);
};
const handleVote = (optionId: string) => {
onVote(poll.id, optionId);
};
const formatTime = (timestamp: number) => {
const date = new Date(timestamp);
return date.toLocaleString();
};
return (
<div className="bg-white/10 backdrop-blur-lg rounded-2xl shadow-2xl p-8 border border-white/20 mb-6">
<div className="mb-6">
<h2 className="text-3xl font-bold text-white mb-3">{poll.question}</h2>
<div className="flex items-center gap-4 text-white/60 text-sm">
<div className="flex items-center gap-1">
<User className="w-4 h-4" />
<span>{poll.createdBy}</span>
</div>
<div className="flex items-center gap-1">
<Clock className="w-4 h-4" />
<span>{formatTime(poll.timestamp)}</span>
</div>
</div>
</div>
<div className="mb-6">
<AddOption onAdd={handleAddOption} />
</div>
<OptionList options={poll.options} onVote={handleVote} hasVoted={hasVoted} />
</div>
);
}

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import { RefreshCw } from 'lucide-react';
import { usePoll } from '../hooks/usePoll';
import { CreatePoll } from './CreatePoll';
import { PollCard } from './PollCard';
import { ConnectionStatus } from './ConnectionStatus';
export function PollView() {
const { polls, createPoll, addOption, vote, hasVoted, isConnected, wsProvider, webrtcProvider } = usePoll();
return (
<div className="min-h-screen p-4 py-8">
<div className="max-w-4xl mx-auto">
<div className="mb-8 flex items-center justify-between">
<div>
<h1 className="text-4xl font-bold text-white mb-2">P2P Polling App</h1>
<p className="text-white/70">Create polls, add answers, and vote in real-time</p>
</div>
<ConnectionStatus
isConnected={isConnected}
wsProvider={wsProvider}
webrtcProvider={webrtcProvider}
/>
</div>
<CreatePoll onCreate={createPoll} />
{polls.length === 0 ? (
<div className="bg-white/10 backdrop-blur-lg rounded-2xl shadow-2xl p-12 border border-white/20 text-center">
<p className="text-white/60 text-lg mb-2">No polls yet!</p>
<p className="text-white/40">Create the first poll to get started.</p>
</div>
) : (
<div className="space-y-6">
{polls.map((poll) => (
<PollCard
key={poll.id}
poll={poll}
onAddOption={addOption}
onVote={vote}
hasVoted={hasVoted}
/>
))}
</div>
)}
<div className="mt-8 text-center text-white/50 text-sm">
<p>QUIC P2P Experiment !</p>
<p className="flex items-center justify-center gap-2 mt-1">
<RefreshCw className="w-4 h-4" />
Real-time P2P synchronization with Yjs
</p>
<p className="mt-1">Open multiple tabs to see live updates!</p>
</div>
</div>
</div>
);
}

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import { ThumbsUp } from 'lucide-react';
interface VoteButtonProps {
optionId: string;
votes: number;
onVote: (optionId: string) => void;
disabled?: boolean;
}
export function VoteButton({ optionId, votes, onVote, disabled = false }: VoteButtonProps) {
return (
<button
onClick={() => !disabled && onVote(optionId)}
disabled={disabled}
className={`flex items-center gap-2 px-4 py-2 rounded-lg transition-all duration-200 text-white font-medium ${
disabled
? 'bg-white/10 cursor-not-allowed opacity-60'
: 'bg-white/20 hover:bg-white/30'
}`}
>
<ThumbsUp className="w-4 h-4" />
<span>{votes}</span>
</button>
);
}

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import { useCallback } from 'react';
import { pollManager } from '../lib/poll-manager';
import { useYjsSync } from './useYjsSync';
export function usePoll() {
const { polls, isConnected, wsProvider, webrtcProvider } = useYjsSync();
const createPoll = useCallback((question: string) => {
return pollManager.createPoll(question);
}, []);
const addOption = useCallback((pollId: string, text: string) => {
pollManager.addOption(pollId, text);
}, []);
const vote = useCallback((pollId: string, optionId: string) => {
pollManager.vote(pollId, optionId);
}, []);
const hasVoted = useCallback((option: any) => {
return pollManager.hasVoted(option);
}, []);
const userId = pollManager.getUserId();
return {
polls,
createPoll,
addOption,
vote,
hasVoted,
userId,
isConnected,
wsProvider,
webrtcProvider
};
}

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import { useEffect, useState } from 'react';
import { Poll } from '../types/poll.types';
import {
initializeProviders,
destroyProviders,
yPolls,
wsProvider,
webrtcProvider
} from '../lib/yjs-setup';
export function useYjsSync() {
const [polls, setPolls] = useState<Poll[]>([]);
const [isConnected, setIsConnected] = useState(false);
useEffect(() => {
const { wsProvider: ws } = initializeProviders();
const updatePolls = () => {
setPolls([...yPolls.toArray()]);
};
yPolls.observe(updatePolls);
updatePolls();
const handleStatus = (event: { status: string }) => {
setIsConnected(event.status === 'connected');
};
ws?.on('status', handleStatus);
return () => {
yPolls.unobserve(updatePolls);
ws?.off('status', handleStatus);
destroyProviders();
};
}, []);
return {
polls,
isConnected,
wsProvider,
webrtcProvider
};
}

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import { PollOption } from '../types/poll.types';
import { createPoll as yjsCreatePoll, addOption as yjsAddOption, voteForOption as yjsVoteForOption } from './yjs-setup';
export class PollManager {
private userId: string;
constructor() {
this.userId = this.generateUserId();
}
private generateUserId(): string {
const stored = localStorage.getItem('p2p-poll-user-id');
if (stored) return stored;
const newId = 'user-' + Math.random().toString(36).substr(2, 9);
localStorage.setItem('p2p-poll-user-id', newId);
return newId;
}
getUserId(): string {
return this.userId;
}
createPoll(question: string): string {
if (!question.trim()) return '';
return yjsCreatePoll(question.trim(), this.userId);
}
addOption(pollId: string, text: string): void {
if (!text.trim()) return;
yjsAddOption(pollId, text.trim(), this.userId);
}
vote(pollId: string, optionId: string): void {
yjsVoteForOption(pollId, optionId, this.userId);
}
hasVoted(option: PollOption): boolean {
return option.votedBy.includes(this.userId);
}
}
export const pollManager = new PollManager();

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import * as Y from 'yjs';
import { WebsocketProvider } from 'y-websocket';
import { WebrtcProvider } from 'y-webrtc';
import { Poll, PollOption } from '../types/poll.types';
const WS_URL = import.meta.env.VITE_WS_URL || 'ws://localhost:3000';
const ROOM_NAME = 'default-poll';
export const ydoc = new Y.Doc();
export const yPolls = ydoc.getArray<Poll>('polls');
export let wsProvider: WebsocketProvider | null = null;
export let webrtcProvider: WebrtcProvider | null = null;
export function initializeProviders() {
wsProvider = new WebsocketProvider(
WS_URL + '/yjs',
ROOM_NAME,
ydoc,
{ connect: true }
);
webrtcProvider = new WebrtcProvider(
ROOM_NAME,
ydoc,
{
signaling: [WS_URL.replace('ws://', 'wss://').replace('http://', 'https://') + '/signal'],
password: null,
awareness: wsProvider.awareness,
maxConns: 20,
filterBcConns: true,
peerOpts: {}
}
);
wsProvider.on('status', (event: { status: string }) => {
console.log('WebSocket status:', event.status);
});
webrtcProvider.on('synced', (synced: boolean) => {
console.log('WebRTC synced:', synced);
});
return { wsProvider, webrtcProvider };
}
export function destroyProviders() {
wsProvider?.destroy();
webrtcProvider?.destroy();
}
export function createPoll(question: string, createdBy: string): string {
const pollId = Math.random().toString(36).substr(2, 9);
const poll: Poll = {
id: pollId,
question,
createdBy,
timestamp: Date.now(),
options: []
};
yPolls.push([poll]);
return pollId;
}
export function addOption(pollId: string, text: string, createdBy: string): void {
const polls = yPolls.toArray();
const pollIndex = polls.findIndex(p => p.id === pollId);
if (pollIndex !== -1) {
const poll = polls[pollIndex];
const option: PollOption = {
id: Math.random().toString(36).substr(2, 9),
text,
votes: 0,
votedBy: [],
createdBy,
timestamp: Date.now()
};
const updatedPoll = {
...poll,
options: [...poll.options, option]
};
yPolls.delete(pollIndex, 1);
yPolls.insert(pollIndex, [updatedPoll]);
}
}
export function voteForOption(pollId: string, optionId: string, userId: string): void {
const polls = yPolls.toArray();
const pollIndex = polls.findIndex(p => p.id === pollId);
if (pollIndex !== -1) {
const poll = polls[pollIndex];
const optionIndex = poll.options.findIndex(opt => opt.id === optionId);
if (optionIndex !== -1) {
const option = poll.options[optionIndex];
if (option.votedBy.includes(userId)) {
return;
}
const updatedOption = {
...option,
votes: option.votes + 1,
votedBy: [...option.votedBy, userId]
};
const updatedOptions = [...poll.options];
updatedOptions[optionIndex] = updatedOption;
const updatedPoll = {
...poll,
options: updatedOptions
};
yPolls.delete(pollIndex, 1);
yPolls.insert(pollIndex, [updatedPoll]);
}
}
}
export function getPolls(): Poll[] {
return yPolls.toArray();
}
export function getPoll(pollId: string): Poll | undefined {
return yPolls.toArray().find(p => p.id === pollId);
}

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@@ -1,9 +0,0 @@
import React from 'react';
import ReactDOM from 'react-dom/client';
import App from './App';
ReactDOM.createRoot(document.getElementById('root')!).render(
<React.StrictMode>
<App />
</React.StrictMode>,
);

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@@ -1,17 +0,0 @@
@tailwind base;
@tailwind components;
@tailwind utilities;
body {
margin: 0;
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
#root {
min-height: 100vh;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

View File

@@ -1,22 +0,0 @@
export interface PollOption {
id: string;
text: string;
votes: number;
votedBy: string[];
createdBy: string;
timestamp: number;
}
export interface Poll {
id: string;
question: string;
createdBy: string;
timestamp: number;
options: PollOption[];
}
export interface ConnectionStatus {
websocket: boolean;
webrtc: boolean;
peers: number;
}

View File

@@ -1,11 +0,0 @@
/** @type {import('tailwindcss').Config} */
export default {
content: [
"./index.html",
"./src/**/*.{js,ts,jsx,tsx}",
],
theme: {
extend: {},
},
plugins: [],
}

View File

@@ -1,21 +0,0 @@
{
"compilerOptions": {
"target": "ES2020",
"useDefineForClassFields": true,
"lib": ["ES2020", "DOM", "DOM.Iterable"],
"module": "ESNext",
"skipLibCheck": true,
"moduleResolution": "bundler",
"allowImportingTsExtensions": true,
"resolveJsonModule": true,
"isolatedModules": true,
"noEmit": true,
"jsx": "react-jsx",
"strict": true,
"noUnusedLocals": true,
"noUnusedParameters": true,
"noFallthroughCasesInSwitch": true
},
"include": ["src"],
"references": [{ "path": "./tsconfig.node.json" }]
}

View File

@@ -1,10 +0,0 @@
{
"compilerOptions": {
"composite": true,
"skipLibCheck": true,
"module": "ESNext",
"moduleResolution": "bundler",
"allowSyntheticDefaultImports": true
},
"include": ["vite.config.ts"]
}

View File

@@ -1,10 +0,0 @@
import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'
export default defineConfig({
plugins: [react()],
server: {
port: 5173,
host: true
}
})

13
index.html Normal file
View File

@@ -0,0 +1,13 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Polly — P2P Polls</title>
<link rel="stylesheet" href="/src/style.css">
</head>
<body>
<div id="app"></div>
<script type="module" src="/src/main.js"></script>
</body>
</html>

1437
package-lock.json generated Normal file

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18
package.json Normal file
View 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"
}
}

View File

@@ -1,4 +0,0 @@
PORT=3000
YJS_WS_PORT=1234
NODE_ENV=development
CORS_ORIGIN=http://localhost:5173

5
server/.gitignore vendored
View File

@@ -1,5 +0,0 @@
node_modules/
dist/
.env
*.log
.DS_Store

2102
server/package-lock.json generated

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View File

@@ -1,30 +0,0 @@
{
"name": "p2p-poll-server",
"version": "1.0.0",
"description": "Backend server for P2P polling app with Yjs and WebRTC signaling",
"main": "dist/index.js",
"scripts": {
"dev": "tsx watch src/index.ts",
"build": "tsc",
"start": "node dist/index.js"
},
"keywords": ["yjs", "websocket", "webrtc", "p2p"],
"author": "",
"license": "MIT",
"dependencies": {
"express": "^4.18.2",
"ws": "^8.14.2",
"y-websocket": "^1.5.0",
"yjs": "^13.6.8",
"cors": "^2.8.5",
"dotenv": "^16.3.1"
},
"devDependencies": {
"@types/express": "^4.17.20",
"@types/ws": "^8.5.8",
"@types/cors": "^2.8.15",
"@types/node": "^20.9.0",
"tsx": "^4.6.2",
"typescript": "^5.2.2"
}
}

View File

@@ -1,59 +0,0 @@
import express from 'express';
import http from 'http';
import cors from 'cors';
import dotenv from 'dotenv';
import { createYjsServer } from './yjs-server';
import { createSignalingServer } from './signaling-server';
import { logger } from './utils/logger';
dotenv.config();
const app = express();
const PORT = process.env.PORT || 3000;
app.use(cors({
origin: process.env.CORS_ORIGIN || 'http://localhost:5173',
credentials: true
}));
app.use(express.json());
app.get('/health', (req, res) => {
res.json({
status: 'ok',
timestamp: new Date().toISOString(),
services: {
yjs: 'running',
signaling: 'running'
}
});
});
app.get('/', (req, res) => {
res.json({
message: 'P2P Poll Server',
endpoints: {
health: '/health',
yjs: 'ws://localhost:' + PORT + '/yjs',
signaling: 'ws://localhost:' + PORT + '/signal'
}
});
});
const server = http.createServer(app);
createYjsServer(server, PORT as number);
createSignalingServer(server);
server.listen(PORT, () => {
logger.info(`Server running on port ${PORT}`);
logger.info(`Yjs WebSocket: ws://localhost:${PORT}/yjs`);
logger.info(`Signaling WebSocket: ws://localhost:${PORT}/signal`);
});
process.on('SIGTERM', () => {
logger.info('SIGTERM signal received: closing HTTP server');
server.close(() => {
logger.info('HTTP server closed');
});
});

View File

@@ -1,126 +0,0 @@
import { WebSocketServer, WebSocket } from 'ws';
import http from 'http';
import { SignalingMessage } from './types/poll.types';
import { logger } from './utils/logger';
interface Client {
id: string;
ws: WebSocket;
roomId: string;
}
export function createSignalingServer(server: http.Server) {
const wss = new WebSocketServer({
server,
path: '/signal'
});
const clients = new Map<string, Client>();
const rooms = new Map<string, Set<string>>();
wss.on('connection', (ws: WebSocket) => {
let clientId: string | null = null;
ws.on('message', (data: Buffer) => {
try {
const message: SignalingMessage = JSON.parse(data.toString());
switch (message.type) {
case 'join':
clientId = message.from;
const roomId = message.roomId || 'default-room';
clients.set(clientId, { id: clientId, ws, roomId });
if (!rooms.has(roomId)) {
rooms.set(roomId, new Set());
}
rooms.get(roomId)!.add(clientId);
logger.info(`Client ${clientId} joined room ${roomId}`);
const roomClients = Array.from(rooms.get(roomId)!).filter(id => id !== clientId);
ws.send(JSON.stringify({
type: 'peers',
peers: roomClients
}));
roomClients.forEach(peerId => {
const peer = clients.get(peerId);
if (peer && peer.ws.readyState === WebSocket.OPEN) {
peer.ws.send(JSON.stringify({
type: 'peer-joined',
peerId: clientId
}));
}
});
break;
case 'offer':
case 'answer':
case 'ice-candidate':
if (message.to) {
const targetClient = clients.get(message.to);
if (targetClient && targetClient.ws.readyState === WebSocket.OPEN) {
targetClient.ws.send(JSON.stringify({
type: message.type,
from: message.from,
data: message.data
}));
}
}
break;
case 'leave':
handleClientLeave(message.from);
break;
}
} catch (error) {
logger.error('Error processing signaling message:', error);
}
});
ws.on('close', () => {
if (clientId) {
handleClientLeave(clientId);
}
});
ws.on('error', (error) => {
logger.error('WebSocket error:', error);
});
});
function handleClientLeave(clientId: string) {
const client = clients.get(clientId);
if (client) {
const roomId = client.roomId;
const room = rooms.get(roomId);
if (room) {
room.delete(clientId);
room.forEach(peerId => {
const peer = clients.get(peerId);
if (peer && peer.ws.readyState === WebSocket.OPEN) {
peer.ws.send(JSON.stringify({
type: 'peer-left',
peerId: clientId
}));
}
});
if (room.size === 0) {
rooms.delete(roomId);
}
}
clients.delete(clientId);
logger.info(`Client ${clientId} left room ${roomId}`);
}
}
logger.info('Signaling server running at path /signal');
return wss;
}

View File

@@ -1,24 +0,0 @@
export interface PollOption {
id: string;
text: string;
votes: number;
votedBy: string[];
createdBy: string;
timestamp: number;
}
export interface Poll {
id: string;
question: string;
createdBy: string;
timestamp: number;
options: PollOption[];
}
export interface SignalingMessage {
type: 'offer' | 'answer' | 'ice-candidate' | 'join' | 'leave';
from: string;
to?: string;
data?: any;
roomId?: string;
}

View File

@@ -1,16 +0,0 @@
export const logger = {
info: (message: string, ...args: any[]) => {
console.log(`[INFO] ${new Date().toISOString()} - ${message}`, ...args);
},
error: (message: string, ...args: any[]) => {
console.error(`[ERROR] ${new Date().toISOString()} - ${message}`, ...args);
},
warn: (message: string, ...args: any[]) => {
console.warn(`[WARN] ${new Date().toISOString()} - ${message}`, ...args);
},
debug: (message: string, ...args: any[]) => {
if (process.env.NODE_ENV === 'development') {
console.debug(`[DEBUG] ${new Date().toISOString()} - ${message}`, ...args);
}
}
};

View File

@@ -1,26 +0,0 @@
import { WebSocketServer } from 'ws';
import { setupWSConnection } from 'y-websocket/bin/utils';
import http from 'http';
import { logger } from './utils/logger';
export function createYjsServer(server: http.Server, port: number) {
const wss = new WebSocketServer({
server,
path: '/yjs'
});
wss.on('connection', (ws, req) => {
const docName = req.url?.split('?')[1]?.split('=')[1] || 'default-poll';
logger.info(`New Yjs connection for document: ${docName}`);
setupWSConnection(ws, req, { docName });
});
wss.on('error', (error) => {
logger.error('Yjs WebSocket server error:', error);
});
logger.info(`Yjs WebSocket server running on port ${port} at path /yjs`);
return wss;
}

View File

@@ -1,20 +0,0 @@
{
"compilerOptions": {
"target": "ES2020",
"module": "commonjs",
"lib": ["ES2020"],
"outDir": "./dist",
"rootDir": "./src",
"strict": true,
"esModuleInterop": true,
"skipLibCheck": true,
"forceConsistentCasingInFileNames": true,
"resolveJsonModule": true,
"moduleResolution": "node",
"declaration": true,
"declarationMap": true,
"sourceMap": true
},
"include": ["src/**/*"],
"exclude": ["node_modules", "dist"]
}

View File

@@ -0,0 +1,47 @@
import { addOption } from '../utils/store.js';
export function AddOption() {
const wrapper = document.createElement('div');
wrapper.className = 'add-option-wrapper';
const input = document.createElement('input');
input.type = 'text';
input.className = 'add-option-input';
input.placeholder = 'Add an option…';
input.maxLength = 100;
input.setAttribute('aria-label', 'New poll option');
const btn = document.createElement('button');
btn.className = 'add-option-btn';
btn.setAttribute('aria-label', 'Add option');
// Plus icon
btn.innerHTML = `
<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" aria-hidden="true">
<path d="M8 2v12M2 8h12" stroke="currentColor" stroke-width="1.75" stroke-linecap="round"/>
</svg>
<span>Add</span>
`;
wrapper.append(input, btn);
function submit() {
const name = input.value.trim();
if (!name) {
input.focus();
input.classList.add('shake');
input.addEventListener('animationend', () => input.classList.remove('shake'), { once: true });
return;
}
addOption(name);
input.value = '';
input.focus();
}
btn.addEventListener('click', submit);
input.addEventListener('keydown', (e) => {
if (e.key === 'Enter') submit();
});
return wrapper;
}

View File

@@ -0,0 +1,77 @@
import { yOptions, getEntries, getTotalVotes } from '../utils/store.js';
import { PollOption } from './PollOption.js';
export function PollList() {
const wrapper = document.createElement('div');
wrapper.className = 'poll-list-wrapper';
const meta = document.createElement('div');
meta.className = 'poll-list-meta';
const list = document.createElement('div');
list.className = 'poll-list';
const empty = document.createElement('div');
empty.className = 'poll-list-empty';
empty.innerHTML = `
<div class="empty-icon">
<svg width="32" height="32" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg">
<rect x="4" y="10" width="24" height="3" rx="1.5" fill="currentColor" opacity="0.15"/>
<rect x="4" y="16" width="18" height="3" rx="1.5" fill="currentColor" opacity="0.1"/>
<rect x="4" y="22" width="21" height="3" rx="1.5" fill="currentColor" opacity="0.07"/>
</svg>
</div>
<p>No options yet — add the first one above.</p>
`;
wrapper.append(meta, list, empty);
function render() {
const entries = getEntries();
const total = getTotalVotes();
// Meta line
if (entries.length > 0) {
meta.textContent = `${entries.length} option${entries.length !== 1 ? 's' : ''} · ${total} vote${total !== 1 ? 's' : ''} total`;
meta.style.display = '';
} else {
meta.style.display = 'none';
}
// Empty state
empty.style.display = entries.length === 0 ? '' : 'none';
// Diff-render: reuse existing rows when possible
const existing = new Map(
[...list.querySelectorAll('.poll-option')].map((el) => [el.dataset.id, el])
);
// Remove stale rows
existing.forEach((el, id) => {
if (!entries.find((e) => e.id === id)) el.remove();
});
// Update or insert rows in sorted order
entries.forEach((entry, i) => {
const newEl = PollOption({ ...entry, totalVotes: total });
const currentEl = list.children[i];
if (!currentEl) {
list.appendChild(newEl);
} else if (currentEl.dataset.id !== entry.id) {
list.insertBefore(newEl, currentEl);
// Remove the now-displaced old element if it was this id
const old = existing.get(entry.id);
if (old && old !== currentEl) old.remove();
} else {
// Replace in-place so vote bar animation triggers
list.replaceChild(newEl, currentEl);
}
});
}
yOptions.observeDeep(() => render());
render();
return wrapper;
}

View File

@@ -0,0 +1,44 @@
import { toggleVote, deleteOption } from '../utils/store.js';
/**
* @param {{ id: string, name: string, votes: number, voted: boolean, totalVotes: number }} entry
*/
export function PollOption({ id, name, votes, voted, totalVotes }) {
const row = document.createElement('div');
row.className = `poll-option${voted ? ' poll-option--voted' : ''}`;
row.dataset.id = id;
const pct = totalVotes > 0 ? Math.round((votes / totalVotes) * 100) : 0;
row.innerHTML = `
<div class="poll-option__bar" style="width: ${pct}%"></div>
<div class="poll-option__content">
<span class="poll-option__name">${escapeHtml(name)}</span>
<div class="poll-option__actions">
<span class="poll-option__pct">${pct}%</span>
<span class="poll-option__count">${votes} vote${votes !== 1 ? 's' : ''}</span>
<button class="poll-option__vote-btn" aria-pressed="${voted}">
${voted ? 'Voted' : 'Vote'}
</button>
<button class="poll-option__delete-btn" aria-label="Remove option">
<svg width="14" height="14" viewBox="0 0 14 14" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M2 2l10 10M12 2L2 12" stroke="currentColor" stroke-width="1.5" stroke-linecap="round"/>
</svg>
</button>
</div>
</div>
`;
row.querySelector('.poll-option__vote-btn').addEventListener('click', () => toggleVote(id));
row.querySelector('.poll-option__delete-btn').addEventListener('click', () => deleteOption(id));
return row;
}
function escapeHtml(str) {
return str
.replace(/&/g, '&amp;')
.replace(/</g, '&lt;')
.replace(/>/g, '&gt;')
.replace(/"/g, '&quot;');
}

View File

@@ -0,0 +1,34 @@
import { ydoc, yTitle } from '../utils/store.js';
export function PollTitle() {
const wrapper = document.createElement('div');
wrapper.className = 'poll-title-wrapper';
const input = document.createElement('input');
input.type = 'text';
input.id = 'poll-title';
input.className = 'poll-title-input';
input.placeholder = 'Untitled Poll';
input.maxLength = 120;
input.setAttribute('aria-label', 'Poll title');
input.value = yTitle.toString();
wrapper.appendChild(input);
// Sync from Yjs → input (only when not focused to avoid cursor jump)
yTitle.observe(() => {
if (document.activeElement !== input) {
input.value = yTitle.toString();
}
});
// Sync from input → Yjs
input.addEventListener('input', () => {
ydoc.transact(() => {
yTitle.delete(0, yTitle.length);
yTitle.insert(0, input.value);
});
});
return wrapper;
}

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@@ -0,0 +1,38 @@
import { roomName } from '../utils/store.js';
export function ShareSection() {
const url = `${window.location.origin}${window.location.pathname}?room=${encodeURIComponent(roomName)}`;
const section = document.createElement('div');
section.className = 'share-section';
section.innerHTML = `
<p class="share-label">Share this poll</p>
<div class="share-row">
<code class="share-url" title="${url}">${url}</code>
<button class="share-copy-btn">Copy link</button>
</div>
`;
const copyBtn = section.querySelector('.share-copy-btn');
copyBtn.addEventListener('click', async () => {
try {
await navigator.clipboard.writeText(url);
copyBtn.textContent = 'Copied!';
copyBtn.classList.add('share-copy-btn--success');
setTimeout(() => {
copyBtn.textContent = 'Copy link';
copyBtn.classList.remove('share-copy-btn--success');
}, 2000);
} catch {
// Fallback: select the text
const range = document.createRange();
range.selectNode(section.querySelector('.share-url'));
window.getSelection().removeAllRanges();
window.getSelection().addRange(range);
}
});
return section;
}

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@@ -0,0 +1,50 @@
import { provider } from '../utils/store.js';
export function StatusBar() {
const el = document.createElement('div');
el.className = 'status-bar';
const dot = document.createElement('span');
dot.className = 'status-dot connecting';
const statusText = document.createElement('span');
statusText.className = 'status-text';
statusText.textContent = 'Connecting';
const divider = document.createElement('span');
divider.className = 'status-divider';
divider.textContent = '·';
const peerText = document.createElement('span');
peerText.className = 'status-peers';
el.append(dot, statusText, divider, peerText);
// --- Connection state ---
let syncTimeout = setTimeout(() => {
statusText.textContent = 'Ready';
dot.className = 'status-dot ready';
}, 3000);
provider.on('synced', ({ synced }) => {
clearTimeout(syncTimeout);
dot.className = `status-dot ${synced ? 'connected' : 'connecting'}`;
statusText.textContent = synced ? 'Connected' : 'Connecting';
});
// --- Peer count ---
function updatePeerCount() {
const total = provider.awareness.getStates().size;
const others = total - 1;
peerText.textContent = others === 0
? 'Only you'
: `${others} other${others !== 1 ? 's' : ''}`;
}
provider.awareness.on('change', updatePeerCount);
updatePeerCount();
return el;
}

41
src/main.js Normal file
View File

@@ -0,0 +1,41 @@
import { StatusBar } from './components/StatusBar.js';
import { PollTitle } from './components/PollTitle.js';
import { AddOption } from './components/AddOption.js';
import { PollList } from './components/PollList.js';
import { ShareSection } from './components/ShareSection.js';
const app = document.getElementById('app');
// Header: logo + status
const header = document.createElement('header');
header.className = 'app-header';
const wordmark = document.createElement('div');
wordmark.className = 'app-wordmark';
wordmark.innerHTML = `
<svg width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg" aria-hidden="true">
<rect x="2" y="4" width="16" height="2.5" rx="1.25" fill="currentColor"/>
<rect x="2" y="8.75" width="11" height="2.5" rx="1.25" fill="currentColor" opacity="0.6"/>
<rect x="2" y="13.5" width="13" height="2.5" rx="1.25" fill="currentColor" opacity="0.35"/>
</svg>
<span>Polly</span>
`;
header.append(wordmark, StatusBar());
// Main card
const card = document.createElement('main');
card.className = 'app-card';
card.append(
PollTitle(),
AddOption(),
PollList(),
);
// Footer
const footer = document.createElement('footer');
footer.className = 'app-footer';
footer.appendChild(ShareSection());
app.append(header, card, footer);

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/* ── Fonts ─────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;600&family=Playfair+Display:wght@500&display=swap');
/* ── Tokens ────────────────────────────────────────────── */
:root {
--bg: #F7F6F2;
--surface: #FFFFFF;
--surface-hover: #FAFAF8;
--border: #E8E5DF;
--border-focus: #1A1A1A;
--text-primary: #1A1A1A;
--text-secondary: #6B6860;
--text-muted: #AAA79F;
--accent: #1A1A1A;
--accent-text: #FFFFFF;
--vote-bar: rgba(26, 26, 26, 0.07);
--vote-bar-voted: rgba(26, 26, 26, 0.12);
--success: #2D7D46;
--danger: #C0392B;
--radius-sm: 6px;
--radius-md: 10px;
--radius-lg: 14px;
--font-display: 'Playfair Display', Georgia, serif;
--font-body: 'DM Sans', system-ui, sans-serif;
--shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.05);
}
/* ── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
/* ── Base ──────────────────────────────────────────────── */
html { font-size: 16px; }
body {
font-family: var(--font-body);
background: var(--bg);
color: var(--text-primary);
min-height: 100vh;
-webkit-font-smoothing: antialiased;
}
/* ── Layout ────────────────────────────────────────────── */
#app {
max-width: 580px;
margin: 0 auto;
padding: 2rem 1.25rem 4rem;
display: flex;
flex-direction: column;
gap: 1.25rem;
}
/* ── Header ────────────────────────────────────────────── */
.app-header {
display: flex;
align-items: center;
justify-content: space-between;
padding: 0 0.25rem;
}
.app-wordmark {
display: flex;
align-items: center;
gap: 0.5rem;
font-family: var(--font-display);
font-size: 1.1rem;
color: var(--text-primary);
letter-spacing: -0.01em;
}
/* ── Status bar ────────────────────────────────────────── */
.status-bar {
display: flex;
align-items: center;
gap: 0.4rem;
font-size: 0.8rem;
color: var(--text-secondary);
}
.status-dot {
width: 6px;
height: 6px;
border-radius: 50%;
flex-shrink: 0;
transition: background 0.3s;
}
.status-dot.connecting { background: var(--text-muted); }
.status-dot.ready { background: var(--text-muted); }
.status-dot.connected { background: var(--success); }
.status-divider { color: var(--text-muted); }
/* ── Card ──────────────────────────────────────────────── */
.app-card {
background: var(--surface);
border: 1px solid var(--border);
border-radius: var(--radius-lg);
box-shadow: var(--shadow-card);
overflow: hidden;
}
/* ── Poll Title ────────────────────────────────────────── */
.poll-title-wrapper {
padding: 1.75rem 1.75rem 1.25rem;
border-bottom: 1px solid var(--border);
}
.poll-title-input {
width: 100%;
font-family: var(--font-display);
font-size: 1.5rem;
font-weight: 500;
color: var(--text-primary);
background: transparent;
border: none;
outline: none;
line-height: 1.3;
letter-spacing: -0.02em;
}
.poll-title-input::placeholder { color: var(--text-muted); }
/* ── Add Option ────────────────────────────────────────── */
.add-option-wrapper {
display: flex;
gap: 0.625rem;
padding: 1.25rem 1.75rem;
border-bottom: 1px solid var(--border);
}
.add-option-input {
flex: 1;
height: 2.5rem;
padding: 0 0.875rem;
font-family: var(--font-body);
font-size: 0.9rem;
color: var(--text-primary);
background: var(--bg);
border: 1px solid var(--border);
border-radius: var(--radius-sm);
outline: none;
transition: border-color 0.15s;
}
.add-option-input::placeholder { color: var(--text-muted); }
.add-option-input:focus { border-color: var(--border-focus); }
.add-option-input.shake {
animation: shake 0.3s ease;
}
@keyframes shake {
0%, 100% { transform: translateX(0); }
25% { transform: translateX(-4px); }
75% { transform: translateX(4px); }
}
.add-option-btn {
display: flex;
align-items: center;
gap: 0.375rem;
height: 2.5rem;
padding: 0 1rem;
font-family: var(--font-body);
font-size: 0.875rem;
font-weight: 500;
color: var(--accent-text);
background: var(--accent);
border: none;
border-radius: var(--radius-sm);
cursor: pointer;
transition: opacity 0.15s;
white-space: nowrap;
}
.add-option-btn:hover { opacity: 0.85; }
.add-option-btn:active { opacity: 0.7; }
/* ── Poll List ─────────────────────────────────────────── */
.poll-list-wrapper {
padding: 0.5rem 0;
}
.poll-list-meta {
padding: 0.5rem 1.75rem 0.75rem;
font-size: 0.775rem;
color: var(--text-muted);
letter-spacing: 0.02em;
text-transform: uppercase;
font-weight: 500;
}
.poll-list-empty {
padding: 3rem 1.75rem;
text-align: center;
color: var(--text-muted);
font-size: 0.875rem;
}
.empty-icon {
margin-bottom: 0.75rem;
opacity: 0.6;
}
/* ── Poll Option ───────────────────────────────────────── */
.poll-option {
position: relative;
overflow: hidden;
transition: background 0.15s;
}
.poll-option:hover {
background: var(--surface-hover);
}
.poll-option__bar {
position: absolute;
inset: 0 auto 0 0;
background: var(--vote-bar);
transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
pointer-events: none;
}
.poll-option--voted .poll-option__bar {
background: var(--vote-bar-voted);
}
.poll-option__content {
position: relative;
display: flex;
align-items: center;
gap: 0.75rem;
padding: 0.875rem 1.75rem;
}
.poll-option__name {
flex: 1;
font-size: 0.9375rem;
font-weight: 400;
color: var(--text-primary);
word-break: break-word;
}
.poll-option--voted .poll-option__name {
font-weight: 500;
}
.poll-option__actions {
display: flex;
align-items: center;
gap: 0.625rem;
flex-shrink: 0;
}
.poll-option__pct {
font-size: 0.8125rem;
font-weight: 500;
color: var(--text-secondary);
min-width: 2.5rem;
text-align: right;
}
.poll-option__count {
font-size: 0.775rem;
color: var(--text-muted);
min-width: 3.5rem;
}
.poll-option__vote-btn {
height: 1.875rem;
padding: 0 0.875rem;
font-family: var(--font-body);
font-size: 0.8125rem;
font-weight: 500;
border-radius: var(--radius-sm);
cursor: pointer;
transition: all 0.15s;
white-space: nowrap;
background: transparent;
color: var(--text-secondary);
border: 1px solid var(--border);
}
.poll-option__vote-btn:hover {
border-color: var(--accent);
color: var(--accent);
}
.poll-option--voted .poll-option__vote-btn {
background: var(--accent);
color: var(--accent-text);
border-color: var(--accent);
}
.poll-option--voted .poll-option__vote-btn:hover {
opacity: 0.8;
}
.poll-option__delete-btn {
display: flex;
align-items: center;
justify-content: center;
width: 1.625rem;
height: 1.625rem;
background: transparent;
border: none;
border-radius: var(--radius-sm);
color: var(--text-muted);
cursor: pointer;
opacity: 0;
transition: opacity 0.15s, color 0.15s, background 0.15s;
}
.poll-option:hover .poll-option__delete-btn { opacity: 1; }
.poll-option__delete-btn:hover {
color: var(--danger);
background: rgba(192, 57, 43, 0.07);
}
/* ── Footer ────────────────────────────────────────────── */
.app-footer {
padding: 0 0.25rem;
}
/* ── Share Section ─────────────────────────────────────── */
.share-section {
background: var(--surface);
border: 1px solid var(--border);
border-radius: var(--radius-lg);
box-shadow: var(--shadow-card);
padding: 1.25rem 1.5rem;
}
.share-label {
font-size: 0.775rem;
font-weight: 500;
color: var(--text-muted);
text-transform: uppercase;
letter-spacing: 0.05em;
margin-bottom: 0.625rem;
}
.share-row {
display: flex;
align-items: center;
gap: 0.625rem;
}
.share-url {
flex: 1;
font-family: 'DM Mono', 'Fira Mono', monospace;
font-size: 0.8rem;
color: var(--text-secondary);
background: var(--bg);
border: 1px solid var(--border);
border-radius: var(--radius-sm);
padding: 0.5rem 0.75rem;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
display: block;
user-select: all;
}
.share-copy-btn {
height: 2rem;
padding: 0 0.875rem;
font-family: var(--font-body);
font-size: 0.8125rem;
font-weight: 500;
color: var(--text-secondary);
background: var(--surface);
border: 1px solid var(--border);
border-radius: var(--radius-sm);
cursor: pointer;
transition: all 0.15s;
white-space: nowrap;
flex-shrink: 0;
}
.share-copy-btn:hover {
border-color: var(--accent);
color: var(--accent);
}
.share-copy-btn--success {
color: var(--success) !important;
border-color: var(--success) !important;
}
/* ── Responsive ────────────────────────────────────────── */
@media (max-width: 480px) {
#app { padding: 1rem 0.75rem 3rem; }
.poll-title-wrapper { padding: 1.25rem 1.25rem 1rem; }
.add-option-wrapper { padding: 1rem 1.25rem; }
.poll-option__content { padding: 0.875rem 1.25rem; }
.poll-list-meta { padding: 0.5rem 1.25rem 0.625rem; }
.poll-list-empty { padding: 2.5rem 1.25rem; }
.poll-option__count { display: none; }
.share-section { padding: 1rem 1.25rem; }
}

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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;
}
// --- Room name from URL ---
function getRoomName() {
const params = new URLSearchParams(window.location.search);
return params.get('room') || 'default-poll';
}
// --- Yjs setup ---
export const peerId = getOrCreatePeerId();
export const roomName = getRoomName();
export const ydoc = new Y.Doc();
export const provider = new WebrtcProvider(roomName, ydoc);
export const yOptions = ydoc.getMap('poll-options');
export const yTitle = ydoc.getText('poll-title');
// --- Data operations ---
export 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);
}
export 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);
}
}
export function deleteOption(optionId) {
yOptions.delete(optionId);
}
// --- Derived read helpers ---
export function getEntries() {
const entries = [];
yOptions.forEach((optionMap, id) => {
entries.push({
id,
name: optionMap.get('name'),
votes: optionMap.get('votes').size,
voted: optionMap.get('votes').has(peerId),
});
});
entries.sort((a, b) => b.votes - a.votes || a.name.localeCompare(b.name));
return entries;
}
export function getTotalVotes() {
let total = 0;
yOptions.forEach((optionMap) => {
total += optionMap.get('votes').size;
});
return total;
}