Add initial implementation of P2P Poll app with HTML, CSS, and JavaScript

.gitignore

@@ -1 +0,0 @@
-node_modules/

README.md

@@ -1,28 +1,14 @@
-# P2P Poll App
-
-## Install npm packages
-```
-npm init -y
-npm install
-```
-
-Note: the frontend obtains the packages `yjs` and `y-websocket` dynamically.
-
-## Run backend
-```
-node backend.js
-```
-
-### Note on Yjs suggestion
-Note that the following server setup is suggested in the Yjs docs (https://docs.yjs.dev/ecosystem/connection-provider/y-websocket):
-```
-npm install y-websocket-server
-HOST=localhost PORT=1000 npx y-websocket
-```
-
-However, across a range of npm versions, this does not work.
-Nevertheless, the essential code from the `y-websocket-server` package is used here as provided in `utils.js`.
-
-## Run frontend
-Open "frontend.html" in browser.
-
+# P2P Poll App
+
+P2P Poll - Minimal GUN-based Scaffolding
+
+What this is
+- A tiny peer-to-peer polling app implemented with vanilla JS and GUN (a decentralized, CRDT-friendly database).
+- No central server for poll data. Peers connect and synchronize the poll in real-time.
+
+Notes
+- This scaffold uses GUN’s browser-based peer-to-peer data replication.
+- You can extend with:
+  - Persistent storage on each peer
+  - Better conflict resolution UI
+  - Optional signaling server for explicit peer discovery

app.js

@@ -0,0 +1,200 @@
+// Minimal GUN-based P2P Poll scaffold (vanilla JS)
+
+(function() {
+  // Initialize GUN (no server needed; can optionally connect to a relay server)
+  // If you want a local-only node for prototyping: Gun()
+  // If you want to use a signaling server for discovery, pass a list of peers to Gun().opt({peers: [...]})
+  const gun = Gun();
+
+  // DOM helpers
+  const pollSection = document.getElementById('poll');
+  const pollIdInput = document.getElementById('pollId');
+  const loadPollBtn = document.getElementById('loadPollBtn');
+  const createPollBtn = document.getElementById('createPollBtn');
+  const pollTitleInput = document.getElementById('pollTitle');
+  const setTitleBtn = document.getElementById('setTitleBtn');
+  const optionsDiv = document.getElementById('options');
+  const newOptionInput = document.getElementById('newOption');
+  const addOptionBtn = document.getElementById('addOptionBtn');
+  const totalVotesSpan = document.getElementById('totalVotes');
+  const pollIdDisplay = document.getElementById('pollIdDisplay');
+
+  let currentPollId = null;
+  let pollsRef = null; // Gun node for /polls/{pollId}
+  let pollData = null; // local cache
+
+  // Helpers
+  function renderOptionList(options) {
+    optionsDiv.innerHTML = '';
+    const keys = Object.keys(options || {});
+    if (keys.length === 0) {
+      optionsDiv.innerHTML = '<p>No options yet. Add one below.</p>';
+      return;
+    }
+    keys.forEach((optId) => {
+      const opt = options[optId];
+      const el = document.createElement('div');
+      el.className = 'option';
+      el.innerHTML = `
+        <span class="text">${opt.text}</span>
+        <button data-optid="${optId}" class="voteBtn">Vote (${opt.votes || 0})</button>
+      `;
+      optionsDiv.appendChild(el);
+    });
+  }
+
+  function updateTotalVotes() {
+    const opts = pollData && pollData.options ? pollData.options : {};
+    const total = Object.values(opts).reduce((sum, o) => sum + (o.votes || 0), 0);
+    totalVotesSpan.textContent = total;
+  }
+
+  // Load existing poll and subscribe to changes
+  function loadPoll(pollId) {
+    if (!pollId) return;
+
+    currentPollId = pollId;
+    pollIdDisplay.textContent = pollId;
+    pollsRef = gun.get('polls').get(pollId);
+
+    // Initialize structure if new poll
+    pollsRef.get('title').put('Untitled Poll');
+    pollsRef.get('options').put({}); // ensure map exists
+
+    // Real-time updates: listen to changes
+    pollsRef.get('title').on((title) => {
+      pollTitleInput.value = title || '';
+    });
+
+    pollsRef.on((data) => {
+      // data is the entire poll node if subscribed; but we explore explicit fields
+    });
+
+    // For options map
+    pollsRef.get('options').on((opts) => {
+      // opts is the entire options map; convert to plain object
+      const optionsObj = toPlainObject(opts);
+      pollData = {
+        title: null,
+        options: optionsObj
+      };
+      renderOptionList(optionsObj);
+      updateTotalVotes();
+    });
+
+    // Also listen for title changes separately (in case some clients push via title path)
+    pollsRef.get('title').on((title) => {
+      pollTitleInput.value = title || '';
+    });
+
+    // Show UI
+    document.getElementById('setup').style.display = 'none';
+    pollSection.style.display = 'block';
+  }
+
+  // Create a new poll
+  function createPoll() {
+    const pollId = pollIdInput.value.trim();
+    if (!pollId) {
+      alert('Please enter a poll ID to create.');
+      return;
+    }
+    currentPollId = pollId;
+    // Initialize poll
+    pollsRef = gun.get('polls').get(pollId);
+    pollsRef.put({
+      title: 'New Poll',
+    });
+    pollsRef.get('options').put({}); // ensure map exists
+    // reflect in UI
+    pollIdDisplay.textContent = pollId;
+    pollTitleInput.value = 'New Poll';
+    pollSection.style.display = 'block';
+    document.getElementById('setup').style.display = 'none';
+  }
+
+  // Add option
+  function addOption() {
+    if (!pollsRef) {
+      alert('Load or create a poll first.');
+      return;
+    }
+    const text = newOptionInput.value.trim();
+    if (!text) return;
+    const optionId = 'opt_' + Date.now();
+    pollsRef.get('options').get(optionId).put({ text, votes: 0 });
+    newOptionInput.value = '';
+  }
+
+  // Set title
+  function setTitle() {
+    if (!pollsRef) return;
+    const title = pollTitleInput.value.trim() || 'Untitled';
+    pollsRef.get('title').put(title);
+  }
+
+  // Vote handler (delegated)
+  function handleVoteClick(e) {
+    if (e.target.classList.contains('voteBtn')) {
+      const optId = e.target.getAttribute('data-optid');
+      if (!optId || !pollsRef) return;
+      const optRef = pollsRef.get('options').get(optId);
+      // Increment votes locally
+      optRef.get('votes').once((v) => {
+        const current = v || 0;
+        optRef.put({ votes: current + 1 });
+      });
+      // UI will update via the on() listener on options map
+    }
+  }
+
+  // Utilities
+  function toPlainObject(obj) {
+    // Gun emits special proxy-like objects; convert to plain object
+    if (!obj) return {};
+    // If it's already a plain object, return
+    if (typeof obj !== 'object') return {};
+    // Gun events deliver object-like; attempt shallow copy
+    try {
+      const copy = JSON.parse(JSON.stringify(obj));
+      return copy;
+    } catch (e) {
+      // Fallback: return as-is if cannot stringify
+      return obj;
+    }
+  }
+
+  // Event bindings
+  loadPollBtn.addEventListener('click', () => {
+    const id = pollIdInput.value.trim();
+    if (!id) {
+      alert('Enter a Poll ID to load.');
+      return;
+    }
+    loadPoll(id);
+  });
+
+  createPollBtn.addEventListener('click', () => {
+    createPoll();
+  });
+
+  addOptionBtn.addEventListener('click', addOption);
+  newOptionInput.addEventListener('keydown', (ev) => {
+    if (ev.key === 'Enter') addOption();
+  });
+
+  setTitleBtn.addEventListener('click', setTitle);
+
+  // Delegate vote clicks
+  optionsDiv.addEventListener('click', handleVoteClick);
+
+  // Initialize: optionally auto-create a poll if URL param present
+  // Example: ?pollId=my-poll-123
+  const urlParams = new URLSearchParams(window.location.search);
+  const autoPoll = urlParams.get('pollId');
+  if (autoPoll) {
+    pollIdInput.value = autoPoll;
+    loadPoll(autoPoll);
+  }
+
+})();

backend.js

@@ -1,31 +0,0 @@
-import { WebSocketServer } from 'ws';
-import { setupWSConnection } from './utils.js'
-
-// Create a WebSocket server
-const WS_PORT = 8080;
-const wss = new WebSocketServer({ port: WS_PORT });
-
-console.log('WebSocket server is running on ws://localhost:' + String(WS_PORT));
-
-// Connection event handler
-wss.on('connection', setupWSConnection);
-/*
-wss.on('connection', (ws) => {
-  console.log('Client connected');
-
-  // Message event handler
-  ws.on('message', (message) => {
-    let msg_str = String(message);
-    console.log("Received: " + msg_str);
-    
-    // If this is a text or state message (no Yjs logic) - echo the message back to the client
-    if (msg_str.startsWith("TEXT_MESSAGE") | msg_str.startsWith("STATE_MESSAGE")) {
-      ws.send(msg_str);
-    }
-  });
-
-  // Close event handler
-  ws.on('close', () => {
-    console.log('Client disconnected');
-  });
-});*/

frontend.html

@@ -1,196 +0,0 @@
-<!DOCTYPE html>
-<html>
-<head>
-  <title>Poll Client</title>
-  <style>
-    body {
-      font-family: Arial, sans-serif;
-      max-width: 600px;
-      margin: 0 auto;
-      padding: 20px;
-    }
-    #messages {
-      height: 300px;
-      border: 1px solid #ccc;
-      overflow-y: auto;
-      padding: 10px;
-      margin-bottom: 10px;
-    }
-    .message { margin: 5px 0; }
-  </style>
-</head>
-<body>
-  <h1>Poll Client</h1>
-  <div id="status">Connecting to server...</div>
-  <div id="status2">Connecting to server...</div>
-  <div id="messages"></div>
-  <div>
-    <input type="text" id="messageInput" placeholder="Type your message">
-    <!--button onclick="sendMessage()">Send</button-->
-    <button id="sendBtn">Send</button>
-    <input id="optionInput" placeholder="Add option">
-    <button id="addBtn">Add</button>
-    <ul id="options"></ul>
-  </div>
-
-  <script type="module">
-    import * as Y from "https://esm.sh/yjs"
-    import { WebsocketProvider } from "https://esm.sh/y-websocket"
-
-    const WS_PORT = 8080;
-    const ydoc = new Y.Doc();
-    const status = document.getElementById('status');
-    const status2 = document.getElementById('status2');
-    const messages = document.getElementById('messages');
-    const messageInput = document.getElementById('messageInput');
-
-    // Connect to the backend (WebSocket server) via Yjs WebsocketProvider
-    const wsp = new WebsocketProvider(
-      'ws://localhost:' + String(WS_PORT), 'poll-room',
-      ydoc
-    )
-    wsp.on('status', event => {
-      //console.log("event.status =", event.status)
-      if (event.status == "connected") {
-        status.textContent = 'Yjs connected to WebSocket server';
-        status.style.color = 'green';
-      }
-      else {
-        status.textContent = 'Yjs disonnected from WebSocket server';
-        status.style.color = 'red';
-      }
-    })
-    wsp.onopen = () => {
-      console.log('connected to y-websocket server');
-    };
-    ydoc.on('update', () => {
-      console.log('Yjs document updated locally');
-    });
-    wsp.on('sync', isSynced => {
-      console.log("isSynced =", isSynced)
-    })
-
-    // Connect to the backend (WebSocket server) via common WebSocket (only for informative messages)
-    const ws = new WebSocket('ws://localhost:' + String(WS_PORT));
-    ws.onopen = () => {
-      status2.textContent = 'WebSocket client connected to WebSocket server';
-      status2.style.color = 'green';
-    };
-    ws.onmessage = (event) => {
-      const message = document.createElement('div');
-      message.className = 'message';
-      message.textContent = event.data;
-      messages.appendChild(message);
-      messages.scrollTop = messages.scrollHeight;
-    };
-    ws.onerror = (error) => {
-      status2.textContent = 'Error: ' + error.message;
-      status2.style.color = 'red';
-    };
-    ws.onclose = () => {
-      status2.textContent = 'WebSocket client disconnected from WebSocket server';
-      status2.style.color = 'red';
-    };
-
-    // Function to send a message
-    function sendMessage(command, payload) {
-        let message = "";
-        if (command === "TEXT_MESSAGE") {
-            message = command + ":" + messageInput.value.trim();
-            messageInput.value = "";
-        }
-        else if (command.startsWith("STATE_MESSAGE--")) {
-            message = command + ":" + payload;
-        }
-        else {
-            console.log("Error: unknown command '" + command + "'")
-        }
-
-        if (message) {
-            /* To make compatible with y-websocket-server API:
-            const encoder = encoding.createEncoder()
-            encoding.writeVarUint(encoder, messageTextMessage)
-            syncProtocol.writeUpdate(encoder, update)
-            enc_message = encoding.toUint8Array(encoder)*/
-            ws.send(message);
-        }
-    }
-
-     // Send message on button click
-    document.getElementById("sendBtn").onclick = () => {
-        sendMessage("TEXT_MESSAGE", "");
-    };
-
-    // Send message on Enter key
-    messageInput.addEventListener('keypress', (e) => {
-      if (e.key === 'Enter') {
-        sendMessage("TEXT_MESSAGE", "");
-      }
-    });
-    
-    // Actual poll logic
-    const optionsMap = ydoc.getMap("options");
-
-    const optionsList = document.getElementById("options");
-    const input = document.getElementById("optionInput");
-
-    function render() {
-        optionsList.innerHTML = ""
-
-        optionsMap.forEach((vote, name) => {
-            // List element for this option
-            const li = document.createElement("li")
-
-            // Label for this option
-            const label = document.createElement("span")
-            label.textContent = name + " — " + vote + " "
-
-            // "Vote"/"Unvote" button
-            const voteBtn = document.createElement("button")
-            if (vote == false) {
-                voteBtn.textContent = "Vote"
-            }
-            else {
-                voteBtn.textContent = "Unvote"
-            }
-            voteBtn.onclick = () => {
-                vote = !vote;
-                optionsMap.set(name, vote);
-                sendMessage("STATE_MESSAGE--" + (vote ? "VOTE" : "UNVOTE"), name);
-            }
-
-            // "Remove" button
-            const removeBtn = document.createElement("button")
-            removeBtn.textContent = "Remove"
-            removeBtn.onclick = () => {
-                optionsMap.delete(name);
-                sendMessage("STATE_MESSAGE--REMOVE", name);
-            }
-
-            li.appendChild(label)
-            li.appendChild(voteBtn)
-            li.appendChild(removeBtn)
-
-            optionsList.appendChild(li)
-        })
-    };
-
-    document.getElementById("addBtn").onclick = () => {
-        const name = input.value.trim()
-
-        if (!name) return
-
-        if (!optionsMap.has(name)) {
-            optionsMap.set(name, false);
-            sendMessage("STATE_MESSAGE--ADD_OPTION", name);
-        }
-
-        input.value = ""
-    };
-
-    optionsMap.observe(render);
-
-    render();
-  </script>
-</body>
-</html>

index.html

@@ -0,0 +1,55 @@
+<!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="styles.css" />
+  <!-- Gun.js via CDN for quick start -->
+  <script src="https://unpkg.com/gun/gun.js"></script>
+</head>
+<body>
+  <div class="container">
+    <h1>P2P Poll</h1>
+
+    <section id="setup" class="card">
+      <h2>Start or Join Poll</h2>
+      <div class="field">
+        <label for="pollId">Poll ID (share with peer):</label>
+        <input id="pollId" type="text" placeholder="e.g. my-poll-123" />
+      </div>
+      <button id="loadPollBtn">Load Poll</button>
+      <button id="createPollBtn">Create New Poll</button>
+      <p class="note">Tip: You can run two instances and connect by using the same Poll ID.</p>
+    </section>
+
+    <section id="poll" class="card" style="display:none;">
+      <h2>Poll</h2>
+      <div class="field">
+        <label for="pollTitle">Poll Title</label>
+        <input id="pollTitle" type="text" placeholder="Poll Title" />
+        <button id="setTitleBtn">Set Title</button>
+      </div>
+
+      <div id="options" class="options">
+        <!-- dynamic options will render here -->
+      </div>
+
+      <div class="field">
+        <input id="newOption" type="text" placeholder="Add a new option" />
+        <button id="addOptionBtn">Add Option</button>
+      </div>
+
+      <div class="summary">
+        <p>Total votes: <span id="totalVotes">0</span></p>
+      </div>
+
+      <div class="share">
+        <p>Share Poll ID with peer: <code id="pollIdDisplay"></code></p>
+      </div>
+    </section>
+  </div>
+
+  <script src="app.js"></script>
+</body>
+</html>

package-lock.json

@@ -1,144 +0,0 @@
-{
-  "name": "yjs-poll",
-  "version": "1.0.0",
-  "lockfileVersion": 3,
-  "requires": true,
-  "packages": {
-    "": {
-      "name": "yjs-poll",
-      "version": "1.0.0",
-      "license": "ISC",
-      "dependencies": {
-        "@y/protocols": "^1.0.6-1",
-        "lib0": "^0.2.102",
-        "ws": "^8.19.0",
-        "yjs": "^14.0.0-7"
-      }
-    },
-    "node_modules/@y/protocols": {
-      "version": "1.0.6-rc.1",
-      "resolved": "https://registry.npmjs.org/@y/protocols/-/protocols-1.0.6-rc.1.tgz",
-      "integrity": "sha512-e/qs7hXcLk/SeNitxMXv2ymozyWFTULwbJEi7cAf/K/iXw9nGwGXHrR5TNluQ/bMwOX1cwuUT0hjEojkfH0gsA==",
-      "license": "MIT",
-      "dependencies": {
-        "lib0": "^1.0.0-rc.1"
-      },
-      "engines": {
-        "node": ">=16.0.0",
-        "npm": ">=8.0.0"
-      },
-      "funding": {
-        "type": "GitHub Sponsors ❤",
-        "url": "https://github.com/sponsors/dmonad"
-      },
-      "peerDependencies": {
-        "@y/y": "*"
-      }
-    },
-    "node_modules/@y/protocols/node_modules/lib0": {
-      "version": "1.0.0-rc.4",
-      "resolved": "https://registry.npmjs.org/lib0/-/lib0-1.0.0-rc.4.tgz",
-      "integrity": "sha512-mESL4089ji2HbS19DwAsYJRrtxZDjzMjEzjNR5kpzFBqlhvV0b7F9+SlA2SHOQU1Puu2A9xejKXtElK77swxLA==",
-      "license": "MIT",
-      "bin": {
-        "0ecdsa-generate-keypair": "src/bin/0ecdsa-generate-keypair.js",
-        "0gentesthtml": "src/bin/gentesthtml.js",
-        "0serve": "src/bin/0serve.js"
-      },
-      "engines": {
-        "node": ">=16"
-      },
-      "funding": {
-        "type": "GitHub Sponsors ❤",
-        "url": "https://github.com/sponsors/dmonad"
-      }
-    },
-    "node_modules/@y/y": {
-      "version": "14.0.0-16",
-      "resolved": "https://registry.npmjs.org/@y/y/-/y-14.0.0-16.tgz",
-      "integrity": "sha512-4zwbLnLannzUiEdJn9r3IS2FCVdHqADZHLqAivzAuKeoCGZ55JUFebp/YUtrYuTE2ZaBgctxpzulqAAHaahtIA==",
-      "license": "MIT",
-      "peer": true,
-      "dependencies": {
-        "lib0": "^0.2.115-6"
-      },
-      "engines": {
-        "node": ">=16.0.0",
-        "npm": ">=8.0.0"
-      },
-      "funding": {
-        "type": "GitHub Sponsors ❤",
-        "url": "https://github.com/sponsors/dmonad"
-      }
-    },
-    "node_modules/isomorphic.js": {
-      "version": "0.2.5",
-      "resolved": "https://registry.npmjs.org/isomorphic.js/-/isomorphic.js-0.2.5.tgz",
-      "integrity": "sha512-PIeMbHqMt4DnUP3MA/Flc0HElYjMXArsw1qwJZcm9sqR8mq3l8NYizFMty0pWwE/tzIGH3EKK5+jes5mAr85yw==",
-      "license": "MIT",
-      "funding": {
-        "type": "GitHub Sponsors ❤",
-        "url": "https://github.com/sponsors/dmonad"
-      }
-    },
-    "node_modules/lib0": {
-      "version": "0.2.117",
-      "resolved": "https://registry.npmjs.org/lib0/-/lib0-0.2.117.tgz",
-      "integrity": "sha512-DeXj9X5xDCjgKLU/7RR+/HQEVzuuEUiwldwOGsHK/sfAfELGWEyTcf0x+uOvCvK3O2zPmZePXWL85vtia6GyZw==",
-      "license": "MIT",
-      "dependencies": {
-        "isomorphic.js": "^0.2.4"
-      },
-      "bin": {
-        "0ecdsa-generate-keypair": "bin/0ecdsa-generate-keypair.js",
-        "0gentesthtml": "bin/gentesthtml.js",
-        "0serve": "bin/0serve.js"
-      },
-      "engines": {
-        "node": ">=16"
-      },
-      "funding": {
-        "type": "GitHub Sponsors ❤",
-        "url": "https://github.com/sponsors/dmonad"
-      }
-    },
-    "node_modules/ws": {
-      "version": "8.19.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.19.0.tgz",
-      "integrity": "sha512-blAT2mjOEIi0ZzruJfIhb3nps74PRWTCz1IjglWEEpQl5XS/UNama6u2/rjFkDDouqr4L67ry+1aGIALViWjDg==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=10.0.0"
-      },
-      "peerDependencies": {
-        "bufferutil": "^4.0.1",
-        "utf-8-validate": ">=5.0.2"
-      },
-      "peerDependenciesMeta": {
-        "bufferutil": {
-          "optional": true
-        },
-        "utf-8-validate": {
-          "optional": true
-        }
-      }
-    },
-    "node_modules/yjs": {
-      "version": "14.0.0-16",
-      "resolved": "https://registry.npmjs.org/yjs/-/yjs-14.0.0-16.tgz",
-      "integrity": "sha512-n7jMrQz4pgU/NFnf4qY53K2adR/fu6ViQ79qVIw6Og+BtuDs1hx3DjOi3iREVnA6tsxQXXVG3gvG0I2kpmAwoQ==",
-      "license": "MIT",
-      "dependencies": {
-        "lib0": "^0.2.115-6"
-      },
-      "engines": {
-        "node": ">=16.0.0",
-        "npm": ">=8.0.0"
-      },
-      "funding": {
-        "type": "GitHub Sponsors ❤",
-        "url": "https://github.com/sponsors/dmonad"
-      }
-    }
-  }
-}

package.json

@@ -1,20 +0,0 @@
-{
-  "name": "yjs-poll",
-  "version": "1.0.0",
-  "main": "index.js",
-  "type": "module",
-  "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1",
-    "y-websocket": "y-websocket"
-  },
-  "keywords": [],
-  "author": "",
-  "license": "ISC",
-  "description": "",
-  "dependencies": {
-    "ws": "^8.19.0",
-    "@y/protocols": "^1.0.6-1",
-    "lib0": "^0.2.102",
-    "yjs": "^14.0.0-7"
-  }
-}

styles.css

@@ -0,0 +1,104 @@
+:root {
+    --bg: #0f1220;
+    --card: #1a1740;
+    --text: #e8e3ff;
+    --muted: #b8a7d2;
+    --accent: #6bd3ff;
+}
+
+* {
+    box-sizing: border-box;
+}
+
+html,
+body {
+    margin: 0;
+    padding: 0;
+    font-family: sans-serif;
+    background: #0b0a14;
+    color: #fff;
+    height: 100%;
+}
+
+.container {
+    max-width: 700px;
+    margin: 40px auto;
+    padding: 0 16px;
+}
+
+.card {
+    background: #1f1740;
+    border-radius: 12px;
+    padding: 16px;
+    margin-bottom: 14px;
+    border: 1px solid #2a1950;
+}
+
+.field {
+    margin-bottom: 12px;
+    display: flex;
+    gap: 8px;
+    align-items: center;
+}
+
+label {
+    min-width: 180px;
+}
+
+input[type="text"] {
+    flex: 1;
+    padding: 8px;
+    border-radius: 6px;
+    border: 1px solid #5a2d8a;
+    background: #2a174f;
+    color: #fff;
+}
+
+button {
+    padding: 8px 12px;
+    border-radius: 6px;
+    border: none;
+    background: #6bd3ff;
+    color: #04152a;
+    font-weight: bold;
+    cursor: pointer;
+}
+
+button:hover {
+    opacity: 0.95;
+}
+
+.options {
+    display: flex;
+    flex-direction: column;
+    gap: 8px;
+    margin-top: 6px;
+}
+
+.option {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 8px;
+    background: #2a174f;
+    border: 1px solid #40217a;
+    border-radius: 6px;
+}
+
+.option .text {
+    flex: 1;
+}
+
+.share {
+    font-size: 0.9em;
+    color: var(--muted);
+}
+
+.note {
+    color: #c8b5ff;
+    font-size: 0.9em;
+}
+
+.total {
+    font-weight: bold;
+}

utils.js

@@ -1,291 +0,0 @@
-/* Adapted from https://github.com/yjs/y-websocket-server/blob/main/src/server.js, version of 2025-04-02
-   (author: dmonad/Kevin Jahns, MIT license) */
-
-import * as Y from 'yjs'
-import * as syncProtocol from '@y/protocols/sync'
-import * as awarenessProtocol from '@y/protocols/awareness'
-
-import * as encoding from 'lib0/encoding'
-import * as decoding from 'lib0/decoding'
-import * as map from 'lib0/map'
-
-import * as eventloop from 'lib0/eventloop'
-
-/*import { callbackHandler, isCallbackSet } from './callback.js'
-
-const CALLBACK_DEBOUNCE_WAIT = parseInt(process.env.CALLBACK_DEBOUNCE_WAIT || '2000')
-const CALLBACK_DEBOUNCE_MAXWAIT = parseInt(process.env.CALLBACK_DEBOUNCE_MAXWAIT || '10000')
-
-const debouncer = eventloop.createDebouncer(CALLBACK_DEBOUNCE_WAIT, CALLBACK_DEBOUNCE_MAXWAIT)*/
-
-const wsReadyStateConnecting = 0
-const wsReadyStateOpen = 1
-const wsReadyStateClosing = 2 // eslint-disable-line
-const wsReadyStateClosed = 3 // eslint-disable-line
-
-// disable gc when using snapshots!
-const gcEnabled = process.env.GC !== 'false' && process.env.GC !== '0'
-// const persistenceDir = process.env.YPERSISTENCE
-/**
- * @type {{bindState: function(string,WSSharedDoc):void, writeState:function(string,WSSharedDoc):Promise<any>, provider: any}|null}
- */
-let persistence = null
-
-/**
- * @param {{bindState: function(string,WSSharedDoc):void,
- * writeState:function(string,WSSharedDoc):Promise<any>,provider:any}|null} persistence_
- */
-export const setPersistence = persistence_ => {
-  persistence = persistence_
-}
-
-/**
- * @return {null|{bindState: function(string,WSSharedDoc):void,
-  * writeState:function(string,WSSharedDoc):Promise<any>}|null} used persistence layer
-  */
-export const getPersistence = () => persistence
-
-/**
- * @type {Map<string,WSSharedDoc>}
- */
-export const docs = new Map()
-
-const messageSync = 0
-const messageAwareness = 1
-// const messageAuth = 2
-//const messageTextMessage = 3
-//const messageStateMessage = 4
-
-/**
- * @param {Uint8Array} update
- * @param {any} _origin
- * @param {WSSharedDoc} doc
- * @param {any} _tr
- */
-const updateHandler = (update, _origin, doc, _tr) => {
-  const encoder = encoding.createEncoder()
-  encoding.writeVarUint(encoder, messageSync)
-  syncProtocol.writeUpdate(encoder, update)
-  const message = encoding.toUint8Array(encoder)
-  doc.conns.forEach((_, conn) => send(doc, conn, message))
-}
-
-/**
- * @type {(ydoc: Y.Doc) => Promise<void>}
- */
-let contentInitializor = _ydoc => Promise.resolve()
-
-/**
- * This function is called once every time a Yjs document is created. You can
- * use it to pull data from an external source or initialize content.
- *
- * @param {(ydoc: Y.Doc) => Promise<void>} f
- */
-export const setContentInitializor = (f) => {
-  contentInitializor = f
-}
-
-export class WSSharedDoc extends Y.Doc {
-  /**
-   * @param {string} name
-   */
-  constructor (name) {
-    super({ gc: gcEnabled })
-    this.name = name
-    /**
-     * Maps from conn to set of controlled user ids. Delete all user ids from awareness when this conn is closed
-     * @type {Map<Object, Set<number>>}
-     */
-    this.conns = new Map()
-    /**
-     * @type {awarenessProtocol.Awareness}
-     */
-    this.awareness = new awarenessProtocol.Awareness(this)
-    this.awareness.setLocalState(null)
-    /**
-     * @param {{ added: Array<number>, updated: Array<number>, removed: Array<number> }} changes
-     * @param {Object | null} conn Origin is the connection that made the change
-     */
-    const awarenessChangeHandler = ({ added, updated, removed }, conn) => {
-      const changedClients = added.concat(updated, removed)
-      if (conn !== null) {
-        const connControlledIDs = /** @type {Set<number>} */ (this.conns.get(conn))
-        if (connControlledIDs !== undefined) {
-          added.forEach(clientID => { connControlledIDs.add(clientID) })
-          removed.forEach(clientID => { connControlledIDs.delete(clientID) })
-        }
-      }
-      // broadcast awareness update
-      const encoder = encoding.createEncoder()
-      encoding.writeVarUint(encoder, messageAwareness)
-      encoding.writeVarUint8Array(encoder, awarenessProtocol.encodeAwarenessUpdate(this.awareness, changedClients))
-      const buff = encoding.toUint8Array(encoder)
-      this.conns.forEach((_, c) => {
-        send(this, c, buff)
-      })
-    }
-    this.awareness.on('update', awarenessChangeHandler)
-    this.on('update', /** @type {any} */ (updateHandler))
-    //if (isCallbackSet) {
-    //  this.on('update', (_update, _origin, doc) => {
-    //    debouncer(() => callbackHandler(/** @type {WSSharedDoc} */ (doc)))
-    //  })
-    //}
-    this.whenInitialized = contentInitializor(this)
-  }
-}
-
-/**
- * Gets a Y.Doc by name, whether in memory or on disk
- *
- * @param {string} docname - the name of the Y.Doc to find or create
- * @param {boolean} gc - whether to allow gc on the doc (applies only when created)
- * @return {WSSharedDoc}
- */
-export const getYDoc = (docname, gc = true) => map.setIfUndefined(docs, docname, () => {
-  const doc = new WSSharedDoc(docname)
-  doc.gc = gc
-  if (persistence !== null) {
-    persistence.bindState(docname, doc)
-  }
-  docs.set(docname, doc)
-  return doc
-})
-
-/**
- * @param {any} conn
- * @param {WSSharedDoc} doc
- * @param {Uint8Array} message
- */
-const messageListener = (conn, doc, message) => {
-  try {
-    const encoder = encoding.createEncoder()
-    const decoder = decoding.createDecoder(new Uint8Array(message))
-    const messageType = decoding.readVarUint(decoder)
-    switch (messageType) {
-      case messageSync:
-        encoding.writeVarUint(encoder, messageSync)
-        syncProtocol.readSyncMessage(decoder, encoder, doc, conn)
-
-        // If the `encoder` only contains the type of reply message and no
-        // message, there is no need to send the message. When `encoder` only
-        // contains the type of reply, its length is 1.
-        if (encoding.length(encoder) > 1) {
-          send(doc, conn, encoding.toUint8Array(encoder))
-        }
-        break
-      case messageAwareness: {
-        awarenessProtocol.applyAwarenessUpdate(doc.awareness, decoding.readVarUint8Array(decoder), conn)
-        break
-      }
-      // If this is a text or a message (no Yjs logic) - echo the message back to the client
-      default: {
-        conn.send(String(message))
-        console.log(String(message))
-        break
-      }
-    }
-  } catch (err) {
-    console.error(err)
-    // @ts-ignore
-    doc.emit('error', [err])
-  }
-}
-
-/**
- * @param {WSSharedDoc} doc
- * @param {any} conn
- */
-const closeConn = (doc, conn) => {
-  if (doc.conns.has(conn)) {
-    /**
-     * @type {Set<number>}
-     */
-    // @ts-ignore
-    const controlledIds = doc.conns.get(conn)
-    doc.conns.delete(conn)
-    awarenessProtocol.removeAwarenessStates(doc.awareness, Array.from(controlledIds), null)
-    if (doc.conns.size === 0 && persistence !== null) {
-      // if persisted, we store state and destroy ydocument
-      persistence.writeState(doc.name, doc).then(() => {
-        doc.destroy()
-      })
-      docs.delete(doc.name)
-    }
-  }
-  conn.close()
-}
-
-/**
- * @param {WSSharedDoc} doc
- * @param {import('ws').WebSocket} conn
- * @param {Uint8Array} m
- */
-const send = (doc, conn, m) => {
-  if (conn.readyState !== wsReadyStateConnecting && conn.readyState !== wsReadyStateOpen) {
-    closeConn(doc, conn)
-  }
-  try {
-    conn.send(m, {}, err => { err != null && closeConn(doc, conn) })
-  } catch (e) {
-    closeConn(doc, conn)
-  }
-}
-
-const pingTimeout = 30000
-
-/**
- * @param {import('ws').WebSocket} conn
- * @param {import('http').IncomingMessage} req
- * @param {any} opts
- */
-export const setupWSConnection = (conn, req, { docName = (req.url || '').slice(1).split('?')[0], gc = true } = {}) => {
-  conn.binaryType = 'arraybuffer'
-  // get doc, initialize if it does not exist yet
-  const doc = getYDoc(docName, gc)
-  doc.conns.set(conn, new Set())
-  // listen and reply to events
-  conn.on('message', /** @param {ArrayBuffer} message */ message => messageListener(conn, doc, message))
-
-  // Check if connection is still alive
-  let pongReceived = true
-  const pingInterval = setInterval(() => {
-    if (!pongReceived) {
-      if (doc.conns.has(conn)) {
-        closeConn(doc, conn)
-      }
-      clearInterval(pingInterval)
-    } else if (doc.conns.has(conn)) {
-      pongReceived = false
-      try {
-        conn.ping()
-      } catch (e) {
-        closeConn(doc, conn)
-        clearInterval(pingInterval)
-      }
-    }
-  }, pingTimeout)
-  conn.on('close', () => {
-    closeConn(doc, conn)
-    clearInterval(pingInterval)
-  })
-  conn.on('pong', () => {
-    pongReceived = true
-  })
-  // put the following in a variables in a block so the interval handlers don't keep in in
-  // scope
-  {
-    // send sync step 1
-    const encoder = encoding.createEncoder()
-    encoding.writeVarUint(encoder, messageSync)
-    syncProtocol.writeSyncStep1(encoder, doc)
-    send(doc, conn, encoding.toUint8Array(encoder))
-    const awarenessStates = doc.awareness.getStates()
-    if (awarenessStates.size > 0) {
-      const encoder = encoding.createEncoder()
-      encoding.writeVarUint(encoder, messageAwareness)
-      encoding.writeVarUint8Array(encoder, awarenessProtocol.encodeAwarenessUpdate(doc.awareness, Array.from(awarenessStates.keys())))
-      send(doc, conn, encoding.toUint8Array(encoder))
-    }
-  }
-}