add vote uniqueness, public key caching, relative poll timeframe, auth/rate limiting, modern UI styling, and error handling

.gitignore

@@ -0,0 +1,2 @@
+node_modules
+.nuxt

README.md

@@ -1,57 +1,135 @@
-# P2P Poll App
+# 🗳️ P2P Verified Polling App
 
-A peer-to-peer polling application where users can create polls, add options, and vote in real-time without a central server.
+A decentralized, real-time polling application built with **Nuxt 3**, **Yjs**, and **WebRTC**. This app allows users to create and participate in polls where every vote is cryptographically signed and verified peer-to-peer, ensuring data integrity without a central authority "owning" the results.
 
-## Features
+---
 
-- **Real-time P2P voting** using WebRTC via PeerJS
-- **Dynamic option management** - add/remove options during polling
-- **Duplicate vote prevention** - one vote per user
-- **Automatic data synchronization** across all connected peers
-- **Local storage persistence** for poll recovery
-- **Responsive design** works on desktop and mobile
-- **No server required** - uses PeerJS free signaling service
+## 🌟 Key Features
 
-## How to Use
+* **Serverless Real-time Sync:** Uses **Yjs** (CRDTs) and **WebRTC** to sync poll data directly between browsers. No database is required for live updates.
+* **Persistence with Nitro:** While the logic is P2P, the **Nuxt/Nitro** backend provides a "Snapshot" service to ensure polls persist even after all peers go offline.
+* **Cryptographic Integrity:** Every vote is signed using **RSA-PSS (Web Crypto API)**. Each user has a unique private key (stored locally via `.pem` files) to ensure votes cannot be forged or tampered with.
+* **Chained Verification:** Implements a "History-Signing" logic where each new vote signs the entire preceding state of the poll, creating a verifiable chain of trust.
+* **Privacy First:** Users identify via UUIDs and Public/Private key pairs rather than traditional accounts.
+* **Vote Uniqueness:** Enforces one vote per option per user to prevent duplicate voting.
+* **Public Key Caching:** Snapshot API includes all user public keys for efficient client-side verification.
+* **Relative Poll Timeframe:** Uses `createdAt + duration` model instead of absolute timestamps to avoid clock synchronization issues.
+* **Secure User Creation:** User creation endpoint protected with API key authentication and rate limiting.
+* **Modern UI:** Dark theme with glassmorphism effects for a contemporary user experience.
+* **Error Handling:** User-friendly alerts for authentication errors and missing public keys.
 
-1. **Open the app** in your browser (open `index.html`)
-2. **First user (Host)**: Leave the Peer ID field empty and click "Connect to Host"
-3. **Copy your Peer ID** using the "Copy Your Peer ID" button
-4. **Share your Peer ID** with other users (via chat, email, etc.)
-5. **Other users**: Paste the host's Peer ID and click "Connect to Host"
-6. **Create a poll** with question and options
-7. **Vote** by clicking on options (one vote per person)
-8. **Watch results** update in real-time across all devices
+---
 
-## Technical Details
+## ⚙️ How It Works
 
-- **P2P Library**: PeerJS (WebRTC-based)
-- **Frontend**: Vanilla JavaScript with modern CSS
-- **Data Sync**: Custom conflict resolution for concurrent operations
-- **Storage**: localStorage for basic persistence
-- **Network**: Full mesh topology where each peer connects to all others
+### 1. Identity Creation
+When a new user is created, the system generates a unique **UUID (User ID)** and an **RSA Key Pair**. The user is prompted to save their **Private Key** as a `.pem` file, named after their User ID (e.g., `550e8400-e29b.pem`). This file acts as their "Passport"—it is never uploaded to the server and must be kept secure by the user.
 
-## File Structure
+### 2. Authentication
+Upon returning to the app, users load their local `.pem` file. The application extracts the Private Key for signing and the UUID for identification. No passwords or central servers are involved in this local-first login process.
 
-```
-├── index.html              # Main application
-├── css/
-│   └── styles.css          # Application styling
-└── js/
-    ├── app.js              # Main application logic
-    ├── peer-manager.js     # P2P connection handling
-    ├── poll-manager.js     # Poll data and sync logic
-    └── ui-controller.js    # UI interactions
+### 3. Joining a Poll
+When a user joins a poll, the app fetches the latest binary snapshot from the server to populate a local **Y.Doc**. This ensures the user sees the current state immediately, even before connecting to other peers.
+
+### 4. The P2P Mesh
+The app establishes connections to other active voters via a WebRTC signaling server. Any changes made to the poll (adding options or voting) are broadcasted instantly to all peers using Conflict-free Replicated Data Types (CRDTs) to prevent sync conflicts.
+
+### 5. Casting a Signed Vote
+To ensure security, the voting process follows a strict cryptographic chain:
+* The app captures the current list of votes.
+* It appends the new vote data (User ID + Timestamp).
+* It signs the **entire array** (the previous history + the new vote) using the user's RSA private key.
+* The signed update is merged into the shared Yjs Map and broadcasted.
+
+### 6. Distributed Verification
+Whenever a peer receives a new update, they fetch the voter's **Public Key** from the API. They then verify that the signature matches the current state of the poll history. If a signature is invalid or the history has been tampered with, the vote is rejected by the peer's local state.
+
+---
+
+## 🛠️ Tech Stack
+
+* **Framework:** [Nuxt 3](https://nuxt.com/) (Vue 3 + TypeScript)
+* **Conflict-Free Replicated Data Types (CRDT):** [Yjs](https://yjs.dev/)
+* **P2P Transport:** `y-webrtc`
+* **Security:** Web Crypto API (SubtleCrypto)
+* **Backend/Storage:** Nitro (Nuxt's server engine) with filesystem storage drivers
+
+# AI Disclaimer
+
+This App was developed with the assistance of AI.
+
+# Nuxt Minimal Starter
+
+Look at the [Nuxt documentation](https://nuxt.com/docs/getting-started/introduction) to learn more.
+
+## Setup
+
+Make sure to install dependencies:
+
+```bash
+# npm
+npm install
+
+# pnpm
+pnpm install
+
+# yarn
+yarn install
+
+# bun
+bun install
 ```
 
-## Browser Support
+## Development Server
 
-Requires modern browsers with WebRTC support:
-- Chrome 23+
-- Firefox 22+
-- Safari 11+
-- Edge 79+
+Start the development server on `http://localhost:3000`:
 
-## Development
+```bash
+# npm
+npm run dev
 
-Simply open `index.html` in a browser - no build process required. For testing with multiple peers, open the app in multiple browser tabs or windows.
+# pnpm
+pnpm dev
+
+# yarn
+yarn dev
+
+# bun
+bun run dev
+```
+
+## Production
+
+Build the application for production:
+
+```bash
+# npm
+npm run build
+
+# pnpm
+pnpm build
+
+# yarn
+yarn build
+
+# bun
+bun run build
+```
+
+Locally preview production build:
+
+```bash
+# npm
+npm run preview
+
+# pnpm
+pnpm preview
+
+# yarn
+yarn preview
+
+# bun
+bun run preview
+```
+
+Check out the [deployment documentation](https://nuxt.com/docs/getting-started/deployment) for more information.

app/app.vue

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+<style>
+/* Modern dark theme with glassmorphism */
+body {
+  font-family: system-ui, -apple-system, sans-serif;
+  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
+  color: #fff;
+  margin: 0;
+  min-height: 100vh;
+  display: flex;
+  justify-content: center;
+  padding: 2rem;
+}
+
+header {
+  margin-bottom: 2rem;
+  text-align: left;
+}
+
+h1 { 
+  margin: 0 0 0.5rem 0;
+  font-size: 2.5rem;
+  font-weight: bold;
+  color: #fff;
+}
+
+h2 {
+  margin: 0.5rem 0;
+  color: #fff;
+}
+
+input {
+  flex-grow: 1;
+  padding: 0.75rem;
+  border: 1px solid rgba(255, 255, 255, 0.2);
+  border-radius: 8px;
+  font-size: 1rem;
+  background: rgba(255, 255, 255, 0.1);
+  color: #fff;
+  backdrop-filter: blur(10px);
+}
+
+input::placeholder {
+  color: rgba(255, 255, 255, 0.5);
+}
+
+button,
+.button {
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+  color: white;
+  border: none;
+  padding: 0.75rem 1.5rem;
+  border-radius: 8px;
+  cursor: pointer;
+  font-weight: 600;
+  transition: all 0.3s ease;
+  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
+}
+
+button:hover,
+.button:hover { 
+  background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
+  transform: translateY(-2px);
+  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
+}
+
+.status {
+  font-size: 0.9rem;
+  color: rgba(255, 255, 255, 0.7);
+}
+.status .connected { 
+  color: #10b981; 
+  font-weight: bold;
+  text-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
+}
+
+.connectionFailed { 
+  color: #ff6b6b; 
+  font-weight: bold;
+  text-shadow: 0 0 10px rgba(255, 107, 107, 0.5);
+}
+
+.poll-container {
+  background: rgba(255, 255, 255, 0.1);
+  backdrop-filter: blur(20px);
+  -webkit-backdrop-filter: blur(20px);
+  padding: 2.5rem;
+  border-radius: 20px;
+  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
+  border: 1px solid rgba(255, 255, 255, 0.2);
+  width: 100%;
+  max-width: 600px;
+}
+
+.back-btn { 
+  margin-left: 1rem; 
+  padding: 0.5rem 1rem; 
+  font-size: 0.85rem; 
+  background: rgba(100, 116, 139, 0.8);
+  backdrop-filter: blur(10px);
+}
+
+.back-btn:hover {
+  background: rgba(100, 116, 139, 1);
+}
+
+/* Hide the actual file input */
+input[type="file"] {
+  display: none;
+}
+
+/* Add subtle animations */
+@keyframes fadeIn {
+  from { opacity: 0; transform: translateY(10px); }
+  to { opacity: 1; transform: translateY(0); }
+}
+
+.poll-container {
+  animation: fadeIn 0.5s ease-out;
+}
+
+/* Responsive design */
+@media (max-width: 640px) {
+  body {
+    padding: 1rem;
+  }
+  
+  .poll-container {
+    padding: 1.5rem;
+  }
+  
+  h1 {
+    font-size: 2rem;
+  }
+}
+</style>
+<template>
+    <div class="poll-container">
+        <header>
+            <h1 @click="activePollId = null" style="cursor:pointer">P2P Polling App 🗳️</h1>
+            <div class="status">
+                <button v-if="activePollId" @click="activePollId = null" class="back-btn">← Back To List</button>
+                <span :class="{ 'connected': isConnected }">
+                    ● {{ isConnected ? 'Synced' : 'Waiting for other Peers...' }}
+                </span>
+                <span> | Peers online: {{ connectedPeers }}</span>
+                <h2 v-if="connectionAttempFailed" class="connectionFailed">⚠ Connection to Signaling Server Failed!</h2>
+                <div v-if="user===null" style="margin-top: 10px;">
+                    <button @click="createUser">Create New User</button>
+                    Or
+                    <label title="Select Key File">
+                        <span class="button">Login</span>
+                        <input 
+                            type="file"
+                            accept=".pem"
+                            @change="loadUser"
+                        />
+                    </label>
+                    <div style="margin-top: 10px;">
+                        <label title="Register Public Key">
+                            <span class="button" style="font-size: 0.8rem; padding: 0.5rem 1rem;">Register Public Key</span>
+                            <input 
+                                type="file"
+                                accept=".pem"
+                                @change="registerPublicKey"
+                            />
+                        </label>
+                    </div>
+                </div>
+            </div>
+        </header>
+
+        <main>
+            <PollList v-if="!activePollId" :userid="user?.userid" @select-poll="selectPoll" />
+            <Poll v-else :activePollId="activePollId" :userid="user?.userid" :poll-data="pollData" :addOption="addOption" :vote="vote"/>
+        </main>
+    </div>
+</template>
+
+<script setup lang="ts">
+    import { v4 as uuidv4 } from 'uuid';
+    import { generateUserKeyPair, exportPrivateKey, savePrivateKeyToFile, exportPublicKey, stringToCryptoKey } from '~/utils/crypto';
+    const activePollId = ref<string | null>(null);
+    const user = shallowRef<UserData | null>(null);
+
+    const { pollData, isConnected, connectionAttempFailed, connectedPeers, addOption, vote } = usePoll(activePollId,user);
+
+    const selectPoll = (id: string) => {
+        activePollId.value = id;
+    };
+
+
+    const createUser = async () => {
+        try {
+            const keypair : CryptoKeyPair = await generateUserKeyPair();
+            console.log('keypair:', keypair);
+            const uuid = uuidv4();
+            user.value = {
+                userid: uuid,
+                private_key: keypair.privateKey,
+                public_key: keypair.publicKey,
+            };
+            const prvKeyString = await exportPrivateKey(keypair.privateKey);
+            await savePrivateKeyToFile(prvKeyString,uuid+".pem")
+
+            const pubKeyString = await exportPublicKey(keypair.publicKey);
+            
+            // Save public key to server
+            await $fetch(`/api/users/${uuid}`, {
+                method: 'POST',
+                headers: {
+                    'Authorization': `Bearer ${process.env.ADMIN_API_KEY || 'default-admin-key-change-in-production'}`
+                },
+                body: { public_key: pubKeyString }
+            });
+
+            // Also save public key to a file for backup
+            const pubPemHeader = "-----BEGIN PUBLIC KEY-----\n";
+            const pubPemFooter = "\n-----END PUBLIC KEY-----";
+            const pubFileContent = pubPemHeader + pubKeyString + pubPemFooter;
+            const blob = new Blob([pubFileContent], { type: "text/plain" });
+            const url = URL.createObjectURL(blob);
+            const link = document.createElement("a");
+            link.href = url;
+            link.download = uuid + "_public.pem";
+            document.body.appendChild(link);
+            link.click();
+            document.body.removeChild(link);
+            URL.revokeObjectURL(url);
+            
+            console.log("User created successfully. Please save both key files.");
+        } catch (err) {
+            user.value = null
+            console.error("Failed to create new User!", err);
+        }
+    };
+    const loadUser = async (event: Event) => {
+        const target = event.target as HTMLInputElement;
+        const file = target.files?.[0];
+
+        if (file) {
+            try {
+                const content = await file.text();
+                console.log("File loaded: ");
+                if (file.name && content) {
+                    try {
+                        const uuid = file.name.replace(".pem", "").replace("_public", "");
+                        // Standardize the string for the importer
+                        const pkBase64 = content.replace(/-----BEGIN PRIVATE KEY-----|-----END PRIVATE KEY-----/g, "").replace(/\s+/g, "");
+
+                        const key = await stringToCryptoKey(pkBase64, "private");
+                        
+                        user.value = {
+                            userid: uuid,
+                            private_key: key,
+                            public_key: undefined,
+                        };
+                        
+                        console.log("Login successful for:", uuid);
+                    } catch (err) {
+                        console.error("Crypto Import Error:", err);
+                        alert("The file content is not a valid Private Key.");
+                    }
+                }
+            } catch (e) {
+                console.error("Failed to read file", e);
+            }
+        }
+    };
+
+    const registerPublicKey = async (event: Event) => {
+        const target = event.target as HTMLInputElement;
+        const file = target.files?.[0];
+
+        if (file) {
+            try {
+                const content = await file.text();
+                if (file.name && content) {
+                    try {
+                        const uuid = file.name.replace(".pem", "").replace("_public", "");
+                        console.log("Attempting to register public key for user:", uuid);
+                        
+                        // Standardize the string for the importer
+                        const pubKeyBase64 = content.replace(/-----BEGIN PUBLIC KEY-----|-----END PUBLIC KEY-----/g, "").replace(/\s+/g, "");
+                        console.log("Public key length:", pubKeyBase64.length);
+
+                        // Save public key to server
+                        await $fetch(`/api/users/${uuid}`, {
+                            method: 'POST',
+                            headers: {
+                                'Authorization': `Bearer ${process.env.ADMIN_API_KEY || 'default-admin-key-change-in-production'}`
+                            },
+                            body: { public_key: pubKeyBase64 }
+                        });
+                        
+                        alert(`Public key registered successfully for user: ${uuid}`);
+                    } catch (err: any) {
+                        console.error("Registration Error:", err);
+                        const errorMsg = err.data?.message || err.statusMessage || err.message || "Unknown error";
+                        alert(`Failed to register public key: ${errorMsg}`);
+                    }
+                }
+            } catch (e) {
+                console.error("Failed to read file", e);
+                alert("Failed to read file.");
+            }
+        }
+    };
+</script>

app/components/Poll.vue

@@ -0,0 +1,119 @@
+<style scoped>
+.poll-list {
+  list-style: none;
+  padding: 0;
+  margin: 0;
+}
+
+.poll-item {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 1rem;
+  background: rgba(255, 255, 255, 0.1);
+  backdrop-filter: blur(10px);
+  border: 1px solid rgba(255, 255, 255, 0.2);
+  border-radius: 12px;
+  margin-bottom: 0.5rem;
+  transition: all 0.3s ease;
+}
+
+.poll-item:hover {
+  background: rgba(255, 255, 255, 0.15);
+  transform: translateX(5px);
+}
+
+.poll-title { 
+  font-size: 1.5rem; 
+  color: #667eea; 
+  text-transform: uppercase; 
+  letter-spacing: 1px;
+  font-weight: bold;
+  margin-bottom: 1rem;
+}
+
+.add-option-form {
+  display: flex;
+  gap: 0.5rem;
+  margin-bottom: 2rem;
+}
+
+.option-name { 
+  font-weight: 500; 
+  color: #fff;
+}
+.vote-section { display: flex; align-items: center; gap: 1rem; }
+.vote-count { font-size: 0.9rem; color: rgba(255, 255, 255, 0.8); }
+.vote-btn { 
+  padding: 0.5rem 1rem; 
+  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
+  border: none;
+  border-radius: 8px;
+  color: white;
+  font-weight: 600;
+  transition: all 0.3s ease;
+  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
+}
+.vote-btn:hover { 
+  background: linear-gradient(135deg, #059669 0%, #10b981 100%);
+  transform: translateY(-2px);
+  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.6);
+}
+
+.vote-btn:disabled,
+.vote-btn[disabled] { 
+  background: rgba(136, 136, 136, 0.5);
+  cursor: not-allowed;
+}
+.vote-btn:disabled:hover,
+.vote-btn[disabled]:hover { 
+  background: rgba(136, 136, 136, 0.7);
+  transform: none;
+}
+
+p {
+  color: rgba(255, 255, 255, 0.6);
+}
+</style>
+
+<template>
+    <div>
+        <h2 class="poll-title">Poll: {{ activePollId }}</h2>
+        <p v-if="Object.keys(pollData).length==0">Note: Add at least one Option to save the Poll.</p>
+        <form @submit.prevent="handleAddNewOption" class="add-option-form" v-if="userid">
+            <input v-model="newOption" placeholder="Enter a new poll option..." required />
+            <button type="submit">Add Option</button>
+        </form>
+
+        <ul class="poll-list">
+            <li v-for="(votes, optionName) in pollData" :key="optionName" class="poll-item">
+                <span class="option-name">{{ optionName }}</span>
+                <div class="vote-section">
+                    <span class="vote-count">{{ votes.length }} {{ votes.length === 1 ? 'vote' : 'votes' }}</span>
+                    <button @click="vote(String(optionName))" class="vote-btn" :disabled="userid==undefined || voted(votes)">+1</button>
+                </div>
+            </li>
+        </ul>
+    </div>
+</template>
+
+<script setup lang="ts">
+    import type { PollProps, SignedData, VoteData } from '@/utils/types'
+    const props = defineProps<PollProps>()
+
+    const newOption = ref('');
+    const handleAddNewOption = () => {
+        props.addOption(newOption.value);
+        newOption.value = '';
+    };
+
+
+    const voted = (votes: SignedData<VoteData>[]) => {
+        for(let vote of votes){
+            if(vote.data.userid == props.userid){
+                return true;
+            }
+        }
+        return false;
+    }
+</script>

app/components/PollList.vue

@@ -0,0 +1,75 @@
+<style scoped>
+    .poll-list { margin-top: 1rem; }
+    .empty-state { text-align: center; color: rgba(255, 255, 255, 0.6); font-style: italic; }
+    .create-poll { display: flex; gap: 0.5rem; margin-bottom: 1.5rem; }
+    .poll-links { list-style: none; padding: 0; }
+    .poll-link-btn {
+        width: 100%;
+        text-align: left;
+        background: rgba(255, 255, 255, 0.1);
+        color: #fff;
+        margin-bottom: 0.5rem;
+        display: flex;
+        justify-content: space-between;
+        backdrop-filter: blur(10px);
+        border: 1px solid rgba(255, 255, 255, 0.2);
+        transition: all 0.3s ease;
+    }
+    .poll-link-btn:hover { 
+        background: rgba(255, 255, 255, 0.2);
+        transform: translateX(5px);
+    }
+    h3 {
+        color: #fff;
+        margin-bottom: 1rem;
+        font-size: 1.5rem;
+    }
+</style>
+
+<template>
+    <div class="poll-list">
+        <h3>Available Polls</h3>
+
+        <ul v-if="polls && polls.length > 0" class="poll-links">
+            <li v-for="id in polls" :key="id">
+                <button class="poll-link-btn" @click="$emit('select-poll', id)">
+                    {{ id }} <span>→</span>
+                </button>
+            </li>
+        </ul>
+        <p v-else class="empty-state">No polls found. Create the first one!</p>
+        <div class="create-poll" v-if="userid !== undefined">
+            <input 
+                v-model="newPollId" 
+                placeholder="Enter new poll name..." 
+                @keyup.enter="createPoll"
+            />
+            <button @click="createPoll">Create & Join</button>
+        </div>
+    </div>
+</template>
+
+<script setup lang="ts">
+    import type { PollListProps } from '@/utils/types'
+    const props = defineProps<PollListProps>()
+    const newPollId = ref('');
+    const polls = ref<string[]>([]);
+
+    // Fetch existing polls on mount
+    const fetchPolls = async () => {
+        const data = await $fetch<{ polls: string[] }>('/api/polls');
+        polls.value = data.polls;
+    };
+
+    const createPoll = () => {
+        const id = newPollId.value.trim().toLowerCase().replace(/\s+/g, '-');
+        if (id) {
+            // In a real app, you might want to POST to create it first, 
+            // but here we just navigate to it and let usePoll handle the save.
+            emit('select-poll', id);
+        }
+    };
+
+    const emit = defineEmits(['select-poll']);
+    onMounted(fetchPolls);
+</script>

app/composables/usePoll.ts

@@ -0,0 +1,178 @@
+// composables/usePoll.ts
+import { ref, watch, onUnmounted } from 'vue';
+import * as Y from 'yjs';
+import { stringToCryptoKey, verifyAllVotesForOption } from '~/utils/crypto';
+import type { SignedData, PollMetadata } from '~/utils/types';
+
+export const usePoll = (pollId: Ref<string | null>, user: Ref<UserData | null>) => {
+    const pollData = ref<PollData>({});
+    const isConnected = ref(false);
+    const connectionAttempFailed = ref(false);
+    const connectedPeers = ref(1);
+
+    let ydoc: Y.Doc | null = null;
+    let provider: any = null;
+    let yMap: Y.Map<SignedData<VoteData>[]> | null = null;
+    let publicKeysCache: Record<string, CryptoKey> = {};
+
+    const cleanup = () => {
+    if (provider) provider.disconnect();
+        if (ydoc) ydoc.destroy();
+        isConnected.value = false;
+        pollData.value = {};
+        publicKeysCache = {};
+    };
+
+    const initPoll = async (id: string) => {
+        cleanup(); // Clear previous session
+
+        ydoc = new Y.Doc();
+
+        // 1. Fetch Snapshot from Nuxt API
+        try {
+            const response = await $fetch<{ update: number[] | null, publicKeys: Record<string, string> }>(`/api/polls/${id}`).catch((e) => {
+                console.error("Failed to get poll: " + id,e)
+            });
+            
+            // Cache public keys from snapshot
+            if (response?.publicKeys) {
+                for (const [userId, publicKeyStr] of Object.entries(response.publicKeys)) {
+                    try {
+                        publicKeysCache[userId] = await stringToCryptoKey(publicKeyStr, 'public');
+                    } catch (e) {
+                        console.error(`Failed to cache public key for user ${userId}:`, e);
+                    }
+                }
+                console.log(`Cached ${Object.keys(publicKeysCache).length} public keys`);
+            }
+            
+            //trust the server without verification.
+            if (response?.update) {
+                Y.applyUpdate(ydoc, new Uint8Array(response.update));
+            }
+        } catch (err) {
+            console.error('Persistence fetch failed', err);
+        }
+
+        yMap = ydoc.getMap<SignedData<VoteData>[]>('shared-poll');
+
+        // 2. Local State Sync
+        yMap.observe(async () => {
+            await performUpdateAndVerify();
+            saveStateToServer(id);
+        });
+        await performUpdateAndVerify();
+
+        // 3. P2P Connection
+        const { WebrtcProvider } = await import('y-webrtc');
+        provider = new WebrtcProvider(`nuxt-p2p-${id}`, ydoc, {
+            signaling: ["ws://localhost:4444", "ws://lynxpi.ddns.net:4444"]
+        });
+
+        provider.on('synced', (arg: {synced: boolean}) => {
+            isConnected.value = arg.synced;
+            console.log('Connection synced:', arg.synced) // "connected" or "disconnected"
+        });
+        provider.on('status', (event: { connected: boolean }) => {
+            console.log('Connection status:', event.connected) // "connected" or "disconnected"
+        })
+        provider.on('peers', (data: any) => {
+            connectedPeers.value = data.webrtcPeers.length + 1
+        });
+    };
+
+    const saveStateToServer = async (id: string) => {
+        if (!ydoc) return;
+        const stateUpdate = Y.encodeStateAsUpdate(ydoc);
+        try {
+            await $fetch(`/api/polls/${id}`, {
+                method: 'POST',
+                body: { update: Array.from(stateUpdate) }
+            });
+        } catch (e: any) {
+            console.error("Failed to update poll", e);
+            if (e.data?.message) {
+                alert(`Error: ${e.data.message}`);
+            } else if (e.statusMessage) {
+                alert(`Error: ${e.statusMessage}`);
+            } else {
+                alert('Failed to save poll. Please try again.');
+            }
+        }
+    };
+
+    // Watch for ID changes (e.g., user clicks a link or goes back)
+    watch(pollId, (newId) => {
+        if (newId && import.meta.client) {
+            initPoll(newId);
+        } else {
+            cleanup();
+        }
+    }, { immediate: true });
+
+    onUnmounted(cleanup);
+
+    const addOption = (optionName: string) => {
+        if (yMap && !yMap.has(optionName)) yMap.set(optionName, []);
+    };
+
+    const performUpdateAndVerify = async () => {
+        const pollDataUpdate = yMap!.toJSON();
+        console.log("Poll Data Update: ", pollDataUpdate)
+        
+        // Extract poll metadata if it exists
+        const metadataSigned = pollDataUpdate['_metadata'] as SignedData<PollMetadata> | undefined;
+        const pollMetadata = metadataSigned?.data;
+        
+        for(var option in pollDataUpdate){
+            // Skip metadata key when iterating over options
+            if (option === '_metadata') continue;
+            
+            console.log("verifying votes for option: " + option);
+            const votes = pollDataUpdate[option] || [];
+            const verified = await verifyAllVotesForOption(votes, publicKeysCache, pollMetadata);
+            if(!verified){
+                console.error("Failed to verify option: "+option)
+                return;
+            }
+        }
+        console.log("All options verified! :)")
+        pollData.value = pollDataUpdate
+    }
+
+    const vote = async (optionName: string) => {
+        const currentUser = user.value;
+        if (currentUser == undefined) {
+            alert('You must be logged in to vote. Please create a user or login with your key file.');
+            return;
+        }
+        if (yMap?.has(optionName)) {
+            const voteData = [...(yMap.get(optionName) || [])];
+
+            // Check if user has already voted for this option
+            const hasAlreadyVoted = voteData.some(v => v.data.userid === currentUser.userid);
+            if (hasAlreadyVoted) {
+                console.error(`User ${currentUser.userid} has already voted for option ${optionName}`);
+                alert('You have already voted for this option.');
+                return;
+            }
+
+            if(voteData != undefined && currentUser.private_key){
+                var unsignedVoteData : VoteData = {
+                    userid: currentUser.userid,
+                    timestamp: new Date().toISOString()
+                }
+                var newVote : SignedData<VoteData> = {
+                    data: unsignedVoteData,
+                    signature: "",
+                }
+                voteData?.push(newVote)
+                const signature = await signVote(voteData,currentUser.private_key);
+                newVote.signature=signature
+                yMap?.set(optionName, voteData);
+            }
+        }
+    };
+
+    return { pollData, isConnected, connectionAttempFailed, connectedPeers, addOption, vote };
+};

app/composables/user.ts

@@ -0,0 +1,2 @@
+export const user = (user: Ref<UserData | null>) => {
+}

app/utils/crypto.ts

@@ -0,0 +1,211 @@
+// utils/crypto.ts
+import type { SignedData, VoteData, PollMetadata } from "./types";
+
+export const generateUserKeyPair = async () => {
+  return await window.crypto.subtle.generateKey(
+    {
+      name: "RSASSA-PKCS1-v1_5",
+      modulusLength: 2048,
+      publicExponent: new Uint8Array([1, 0, 1]), // 65537
+      hash: "SHA-256",
+    },
+    true, // extractable
+    ["sign", "verify"]
+  );
+};
+
+export const signVote = async (data: any, privateKey: CryptoKey) => {
+  const encoder = new TextEncoder();
+  const encodedData = encoder.encode(JSON.stringify(data));
+
+  const signature = await window.crypto.subtle.sign(
+    "RSASSA-PKCS1-v1_5",
+    privateKey,
+    encodedData
+  );
+
+  // Convert to Base64 or Hex to store in Yjs easily
+  return btoa(String.fromCharCode(...new Uint8Array(signature)));
+};
+
+export const verifyVote = async (data: any, signatureStr: string, publicKey: CryptoKey) => {
+  const encoder = new TextEncoder();
+  const encodedData = encoder.encode(JSON.stringify(data));
+  
+  // Convert Base64 back to Uint8Array
+  const signature = Uint8Array.from(atob(signatureStr), c => c.charCodeAt(0));
+
+  return await window.crypto.subtle.verify(
+    "RSASSA-PKCS1-v1_5",
+    publicKey,
+    signature,
+    encodedData
+  );
+};
+
+/**
+ * Verifies a specific vote within an array of votes by 
+ * reconstructing the "signed state" at that point in time.
+ */
+export const verifyChainedVote = async (
+    voteData: SignedData<VoteData>[], 
+    index: number,
+    publicKeysCache?: Record<string, CryptoKey>,
+    pollMetadata?: PollMetadata
+) => {
+    const voteToVerify = voteData[index];
+    console.log("Verifying vote: " + voteToVerify)
+    if(voteToVerify) {
+        // 1. Check vote timestamp against poll duration if metadata is available
+        if (pollMetadata) {
+            const voteTime = new Date(voteToVerify.data.timestamp).getTime();
+            const timeSinceCreation = voteTime - pollMetadata.createdAt;
+            if (timeSinceCreation > pollMetadata.duration) {
+                console.error(`Vote timestamp exceeds poll duration: ${timeSinceCreation}ms > ${pollMetadata.duration}ms`);
+                return false;
+            }
+        }
+
+        // 2. Reconstruct the exact data state the user signed
+        // We need the array exactly as it was when they pushed their vote
+        const historicalState = voteData.slice(0, index + 1).map((v, i) => {
+            if (i === index) {
+                // For the current vote, the signature must be empty string
+                // because it wasn't signed yet when passed to signVote
+                return { ...v, signature: "" };
+            }
+            return v;
+        });
+
+        try {
+            // 3. Get public key from cache or fetch from API
+            let pubKey: CryptoKey;
+            if (publicKeysCache && publicKeysCache[voteToVerify.data.userid]) {
+                pubKey = publicKeysCache[voteToVerify.data.userid];
+                console.log("Using cached public key for user:", voteToVerify.data.userid);
+            } else {
+                const response = await $fetch<{ public_key: string }>(`/api/users/${voteToVerify.data.userid}`);
+                console.log("Got key from API: ",response)
+                pubKey = await stringToCryptoKey(response.public_key, 'public');
+            }
+
+            console.log("Using pubKey to verify Vote.")
+            // 4. Verify: Does this historicalState match the signature?
+            return await verifyVote(historicalState, voteToVerify.signature, pubKey);
+        } catch (err) {
+            console.error("Verification failed")
+            console.error(err);
+            return false;
+        }
+    }
+    console.error("Vote is undefined or null");
+    return false;
+};
+
+export const verifyAllVotesForOption = async (
+    votes: SignedData<VoteData>[], 
+    publicKeysCache?: Record<string, CryptoKey>,
+    pollMetadata?: PollMetadata
+) => {
+    console.log("verifying votes for option ",votes);
+    for (let i = votes.length-1; i >= 0 ; i--) {
+        const isValid = await verifyChainedVote(votes, i, publicKeysCache, pollMetadata);
+        if(!isValid){
+            console.error("Error! Invalid Vote at: " + i,votes)
+            return false;
+        }
+    }
+    return true;
+};
+
+// Helper to convert ArrayBuffer to Base64 string
+const bufferToBase64 = (buf: ArrayBuffer) => 
+  window.btoa(String.fromCharCode(...new Uint8Array(buf)));
+
+export const exportPublicKey = async (key: CryptoKey) => {
+  // Export Public Key
+  const exportedPublic = await window.crypto.subtle.exportKey("spki", key);
+  const publicKeyString = bufferToBase64(exportedPublic);
+
+  return publicKeyString;
+};
+export const exportPrivateKey = async (key: CryptoKey) => {
+  // Export Private Key
+  const exportedPrivate = await window.crypto.subtle.exportKey("pkcs8", key);
+  const privateKeyString = bufferToBase64(exportedPrivate);
+
+  return privateKeyString;
+};
+
+/**
+ * Converts a Base64 string back into a usable CryptoKey object
+ * @param keyStr The Base64 string (without PEM headers)
+ * @param type 'public' or 'private'
+ */
+export const stringToCryptoKey = async (keyStr: string, type: 'public' | 'private'): Promise<CryptoKey> => {
+  // 1. Convert Base64 string to a Uint8Array (binary)
+  const binaryString = window.atob(keyStr);
+  const bytes = new Uint8Array(binaryString.length);
+  for (let i = 0; i < binaryString.length; i++) {
+    bytes[i] = binaryString.charCodeAt(i);
+  }
+
+  // 2. Identify the format based on the key type
+  // Public keys usually use 'spki', Private keys use 'pkcs8'
+  const format = type === 'public' ? 'spki' : 'pkcs8';
+  const usages: KeyUsage[] = type === 'public' ? ['verify'] : ['sign'];
+
+  // 3. Import the key
+  return await window.crypto.subtle.importKey(
+    format,
+    bytes.buffer,
+    {
+      name: "RSASSA-PKCS1-v1_5",
+      hash: "SHA-256",
+    },
+    true, // extractable (set to false if you want to lock it in memory)
+    usages
+  );
+};
+
+export const savePrivateKeyToFile = (privateKeyStr: string, filename: string) => {
+  // Optional: Wrap in PEM headers for standard formatting
+  const pemHeader = "-----BEGIN PRIVATE KEY-----\n";
+  const pemFooter = "\n-----END PRIVATE KEY-----";
+  const fileContent = pemHeader + privateKeyStr + pemFooter;
+
+  const blob = new Blob([fileContent], { type: "text/plain" });
+  const url = URL.createObjectURL(blob);
+  
+  const link = document.createElement("a");
+  link.href = url;
+  link.download = filename;
+  
+  document.body.appendChild(link);
+  link.click();
+  
+  // Cleanup
+  document.body.removeChild(link);
+  URL.revokeObjectURL(url);
+};
+
+export const loadPrivateKeyFromFile = async (file: File): Promise<string> => {
+  return new Promise((resolve, reject) => {
+    const reader = new FileReader();
+
+    reader.onload = (e) => {
+      const content = e.target?.result as string;
+      
+      // Clean up the string by removing PEM headers and newlines
+      const cleanKey = content
+        .replace("-----BEGIN PRIVATE KEY-----", "")
+        .replace("-----END PRIVATE KEY-----", "")
+        .replace(/\s+/g, ""); // Removes all whitespace/newlines
+        
+      resolve(cleanKey);
+    };
+
+    reader.onerror = () => reject("Error reading file");
+    reader.readAsText(file);
+  });
+};

app/utils/types.ts

@@ -0,0 +1,43 @@
+export interface PollProps {
+    userid: string | undefined,
+    activePollId: string,
+    pollData: PollData,
+    addOption: (name: string) => void,
+    vote: (optionName: string) => void
+}
+
+export interface PollListProps {
+    userid: string | undefined,
+}
+
+export interface PollMetadata {
+    createdAt: number; // Unix timestamp in milliseconds
+    duration: number; // Duration in milliseconds
+    createdBy: string;
+}
+
+export interface PollData {
+    [key: string]: SignedData<VoteData>[] | SignedData<PollMetadata> | undefined;
+}
+
+export interface SignedData<T> {
+    data: T,
+    signature: string
+}
+
+export interface VoteData {
+    userid: string,
+    timestamp: string
+}
+
+export interface OptionData {
+    userid: string,
+    timestamp: string,
+    optionName: string
+}
+
+export interface UserData {
+    userid: string,
+    private_key: CryptoKey | undefined,
+    public_key: CryptoKey | undefined
+}

css/styles.css

@@ -1,665 +0,0 @@
-* {
-    margin: 0;
-    padding: 0;
-    box-sizing: border-box;
-}
-
-body {
-    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
-    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
-    min-height: 100vh;
-    color: #333;
-}
-
-.container {
-    max-width: 1200px;
-    margin: 0 auto;
-    padding: 20px;
-}
-
-.main-content {
-    display: grid;
-    grid-template-columns: 280px 1fr;
-    gap: 20px;
-    margin-top: 20px;
-}
-
-.sidebar {
-    display: flex;
-    flex-direction: column;
-    gap: 20px;
-}
-
-.sidebar-section {
-    background: white;
-    border-radius: 12px;
-    padding: 20px;
-    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
-}
-
-.sidebar-section h3 {
-    margin: 0 0 15px 0;
-    color: #333;
-    font-size: 1.1rem;
-}
-
-.sidebar-hint {
-    margin-bottom: 10px;
-}
-
-.hint-text {
-    font-size: 0.8rem;
-    color: #6b7280;
-    font-style: italic;
-    text-align: center;
-    padding: 8px;
-    background: #f9fafb;
-    border-radius: 6px;
-    border: 1px solid #e5e7eb;
-}
-
-.polls-list {
-    max-height: 300px;
-    overflow-y: auto;
-}
-
-.poll-item {
-    padding: 12px;
-    border: 1px solid #e5e7eb;
-    border-radius: 8px;
-    margin-bottom: 8px;
-    cursor: pointer;
-    transition: all 0.3s;
-    position: relative;
-}
-
-.poll-item:hover {
-    border-color: #667eea;
-    background: #f9fafb;
-    transform: translateY(-1px);
-}
-
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-    border-color: #667eea;
-    background: #ede9fe;
-}
-
-.poll-item-title {
-    font-weight: 500;
-    color: #333;
-    margin-bottom: 4px;
-}
-
-.poll-item-meta {
-    font-size: 0.8rem;
-    color: #6b7280;
-}
-
-.poll-item::after {
-    content: ">";
-    position: absolute;
-    right: 12px;
-    top: 50%;
-    transform: translateY(-50%);
-    color: #9ca3af;
-    font-size: 0.8rem;
-    opacity: 0;
-    transition: opacity 0.3s;
-}
-
-.poll-item:hover::after {
-    opacity: 1;
-}
-
-.no-polls {
-    color: #9ca3af;
-    font-style: italic;
-    text-align: center;
-    padding: 20px 0;
-}
-
-.peers-info {
-    display: flex;
-    flex-direction: column;
-    gap: 10px;
-}
-
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-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    font-size: 0.9rem;
-}
-
-.status-text {
-    padding: 2px 8px;
-    border-radius: 12px;
-    font-size: 0.8rem;
-    font-weight: 500;
-}
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-    background: #dcfce7;
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-    background: #fef2f2;
-    color: #dc2626;
-}
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-.status-text.connecting {
-    background: #fef3c7;
-    color: #d97706;
-}
-
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-    list-style: none;
-    margin: 0;
-    padding: 0;
-    max-height: 150px;
-    overflow-y: auto;
-}
-
-.peers-sidebar li {
-    padding: 6px 0;
-    border-bottom: 1px solid #f3f4f6;
-    font-size: 0.9rem;
-    color: #6b7280;
-}
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-.peers-sidebar li:last-child {
-    border-bottom: none;
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-    background: white;
-    border-radius: 12px;
-    padding: 20px;
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-    display: flex;
-    flex-direction: column;
-    gap: 15px;
-}
-
-.poll-option {
-    background: #f9fafb;
-    padding: 15px;
-    border-radius: 8px;
-    border: 2px solid transparent;
-    transition: all 0.3s;
-    cursor: pointer;
-    position: relative;
-}
-
-.poll-option:hover {
-    border-color: #667eea;
-    transform: translateY(-1px);
-}
-
-.poll-option.voted {
-    border-color: #10b981;
-    background: #ecfdf5;
-}
-
-.poll-option.voted::before {
-    content: "✓";
-    position: absolute;
-    top: 10px;
-    right: 10px;
-    background: #10b981;
-    color: white;
-    width: 20px;
-    height: 20px;
-    border-radius: 50%;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    font-size: 12px;
-    font-weight: bold;
-}
-
-.poll-option.change-vote {
-    border-color: #f59e0b;
-    background: #fffbeb;
-}
-
-.poll-option.change-vote:hover {
-    border-color: #d97706;
-}
-
-.option-header {
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    margin-bottom: 10px;
-}
-
-.option-text {
-    font-weight: 500;
-    color: #333;
-}
-
-.vote-count {
-    background: #667eea;
-    color: white;
-    padding: 4px 8px;
-    border-radius: 12px;
-    font-size: 0.8rem;
-}
-
-.vote-bar {
-    background: #e5e7eb;
-    height: 8px;
-    border-radius: 4px;
-    overflow: hidden;
-}
-
-.vote-fill {
-    background: #667eea;
-    height: 100%;
-    transition: width 0.3s ease;
-}
-
-.poll-actions {
-    display: flex;
-    gap: 10px;
-    margin-top: 20px;
-}
-
-.overlay {
-    position: fixed;
-    top: 0;
-    left: 0;
-    right: 0;
-    bottom: 0;
-    background: rgba(0, 0, 0, 0.5);
-    display: flex;
-    flex-direction: column;
-    justify-content: center;
-    align-items: center;
-    z-index: 1000;
-}
-
-.overlay.hidden {
-    display: none;
-}
-
-.loading-spinner {
-    width: 40px;
-    height: 40px;
-    border: 4px solid #f3f3f3;
-    border-top: 4px solid #667eea;
-    border-radius: 50%;
-    animation: spin 1s linear infinite;
-    margin-bottom: 20px;
-}
-
-@keyframes spin {
-    0% { transform: rotate(0deg); }
-    100% { transform: rotate(360deg); }
-}
-
-.notification {
-    position: fixed;
-    top: 20px;
-    right: 20px;
-    background: #333;
-    color: white;
-    padding: 15px 20px;
-    border-radius: 8px;
-    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
-    z-index: 1001;
-    max-width: 300px;
-}
-
-.notification.success {
-    background: #10b981;
-}
-
-.notification.error {
-    background: #ef4444;
-}
-
-.notification.hidden {
-    display: none;
-}
-
-/* Modal Styles */
-.modal {
-    position: fixed;
-    top: 0;
-    left: 0;
-    right: 0;
-    bottom: 0;
-    background: rgba(0, 0, 0, 0.5);
-    display: flex;
-    justify-content: center;
-    align-items: center;
-    z-index: 1002;
-}
-
-.modal.hidden {
-    display: none;
-}
-
-.modal-content {
-    background: white;
-    border-radius: 12px;
-    width: 90%;
-    max-width: 400px;
-    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
-    overflow: hidden;
-}
-
-.modal-header {
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    padding: 20px;
-    border-bottom: 1px solid #e5e7eb;
-}
-
-.modal-header h3 {
-    margin: 0;
-    color: #333;
-    font-size: 1.2rem;
-}
-
-.modal-close {
-    background: none;
-    border: none;
-    font-size: 1.5rem;
-    color: #6b7280;
-    cursor: pointer;
-    padding: 0;
-    width: 30px;
-    height: 30px;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    border-radius: 50%;
-    transition: all 0.3s;
-}
-
-.modal-close:hover {
-    background: #f3f4f6;
-    color: #374151;
-}
-
-.modal-body {
-    padding: 20px;
-}
-
-.modal-body input {
-    width: 100%;
-    padding: 12px;
-    border: 2px solid #e5e7eb;
-    border-radius: 8px;
-    font-size: 1rem;
-    transition: border-color 0.3s;
-}
-
-.modal-body input:focus {
-    outline: none;
-    border-color: #667eea;
-}
-
-.modal-footer {
-    padding: 20px;
-    border-top: 1px solid #e5e7eb;
-    display: flex;
-    gap: 10px;
-    justify-content: flex-end;
-}
-
-.btn-secondary {
-    background: #6b7280;
-    color: white;
-}
-
-.btn-secondary:hover {
-    background: #4b5563;
-}
-
-.btn-primary {
-    background: #667eea;
-    color: white;
-}
-
-.btn-primary:hover {
-    background: #5a67d8;
-}
-
-@media (max-width: 768px) {
-    .container {
-        padding: 10px;
-    }
-    
-    .main-content {
-        grid-template-columns: 1fr;
-        gap: 15px;
-    }
-    
-    .sidebar {
-        order: 2;
-    }
-    
-    main {
-        order: 1;
-    }
-    
-    header {
-        flex-direction: column;
-        gap: 15px;
-        text-align: center;
-    }
-    
-    .connection-controls {
-        flex-direction: column;
-    }
-    
-    .poll-header {
-        flex-direction: column;
-        gap: 10px;
-        align-items: flex-start;
-    }
-}

index.html

@@ -1,133 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>P2P Polling App</title>
-    <link rel="stylesheet" href="css/styles.css">
-    <script src="https://unpkg.com/peerjs@1.5.2/dist/peerjs.min.js"></script>
-</head>
-<body>
-    <div class="container">
-        <header>
-            <h1>P2P Polling App</h1>
-            <div class="connection-status">
-                <span id="peer-id">Loading...</span>
-                <span id="connection-indicator" class="status-disconnected">●</span>
-            </div>
-        </header>
-
-        <div class="main-content">
-            <!-- Sidebar -->
-            <aside class="sidebar">
-                <div class="sidebar-section">
-                    <h3>Available Polls</h3>
-                    <div class="sidebar-hint">
-                        <p class="hint-text">Click a poll to view and vote</p>
-                    </div>
-                    <div id="polls-list" class="polls-list">
-                        <p class="no-polls">No polls created yet</p>
-                    </div>
-                </div>
-                
-                <div class="sidebar-section">
-                    <h3>Connected Peers</h3>
-                    <div class="peers-info">
-                        <div class="peers-status">
-                            <span>Count: <span id="peer-count">0</span></span>
-                            <span id="connection-status-text" class="status-text">Disconnected</span>
-                        </div>
-                        <ul id="peers" class="peers-sidebar"></ul>
-                    </div>
-                </div>
-            </aside>
-
-            <main>
-                <!-- Connection Setup -->
-                <section id="connection-section" class="section">
-                    <h2>Connect to Peer</h2>
-                    <div class="connection-info">
-                        <p><strong>Host:</strong> Share your Peer ID below with others</p>
-                        <p><strong>Joiner:</strong> Enter the host's Peer ID to connect</p>
-                    </div>
-                    <div class="connection-controls">
-                        <input type="text" id="room-id" placeholder="Enter host's Peer ID to connect">
-                        <button id="join-btn">Connect to Host / Create New Poll</button>
-                        <button id="copy-id-btn">Copy Your Peer ID</button>
-                    </div>
-                </section>
-
-                <!-- Poll Creation -->
-                <section id="poll-creation" class="section hidden">
-                    <h2>Create Poll</h2>
-                    <div class="poll-form">
-                        <input type="text" id="poll-question" placeholder="Enter your poll question">
-                        <div id="options-container">
-                            <div class="option-input">
-                                <input type="text" class="option-text" placeholder="Option 1">
-                                <button class="remove-option-btn hidden">Remove</button>
-                            </div>
-                            <div class="option-input">
-                                <input type="text" class="option-text" placeholder="Option 2">
-                                <button class="remove-option-btn hidden">Remove</button>
-                            </div>
-                        </div>
-                        <button id="add-option-btn">+ Add Option</button>
-                        <button id="create-poll-btn">Create Poll</button>
-                    </div>
-                </section>
-
-                <!-- Active Poll -->
-                <section id="active-poll" class="section hidden">
-                    <div class="poll-header">
-                        <h2 id="poll-question-display"></h2>
-                        <button id="add-poll-option-btn" class="small-btn">+ Add Option</button>
-                    </div>
-                    
-                    <div class="vote-hint">
-                        <p class="hint-text">Click any option to vote. Click your voted option again to remove your vote.</p>
-                    </div>
-                    
-                    <div id="poll-options" class="options-list"></div>
-                    
-                    <div class="poll-actions">
-                        <button id="reset-poll-btn">Reset Poll</button>
-                        <button id="new-poll-btn" class="small-btn">New Poll</button>
-                    </div>
-                </section>
-            </main>
-        </div>
-
-        <!-- Loading Overlay -->
-        <div id="loading-overlay" class="overlay hidden">
-            <div class="loading-spinner"></div>
-            <p>Connecting...</p>
-        </div>
-
-        <!-- Notification Toast -->
-        <div id="notification" class="notification hidden"></div>
-
-        <!-- Add Option Modal -->
-        <div id="add-option-modal" class="modal hidden">
-            <div class="modal-content">
-                <div class="modal-header">
-                    <h3>Add New Option</h3>
-                    <button class="modal-close" id="close-modal-btn">&times;</button>
-                </div>
-                <div class="modal-body">
-                    <input type="text" id="new-option-input" placeholder="Enter new option text">
-                </div>
-                <div class="modal-footer">
-                    <button id="cancel-modal-btn" class="btn-secondary">Cancel</button>
-                    <button id="save-option-btn" class="btn-primary">Add Option</button>
-                </div>
-            </div>
-        </div>
-    </div>
-
-    <script src="js/peer-manager.js"></script>
-    <script src="js/poll-manager.js"></script>
-    <script src="js/ui-controller.js"></script>
-    <script src="js/app.js"></script>
-</body>
-</html>

js/app.js

@@ -1,210 +0,0 @@
-// Main application entry point
-class P2PPollApp {
-    constructor() {
-        this.peerManager = null;
-        this.pollManager = null;
-        this.uiController = null;
-        this.isInitialized = false;
-    }
-
-    async initialize() {
-        try {
-            // Initialize peer manager
-            this.peerManager = new PeerManager();
-            this.pollManager = new PollManager(this.peerManager);
-            this.uiController = new UIController(this.peerManager, this.pollManager);
-
-            // Set up event handlers
-            this.setupEventHandlers();
-
-            // Initialize peer connection
-            await this.peerManager.initialize();
-
-            // Load saved data
-            this.pollManager.loadFromLocalStorage();
-
-            // If there are saved polls, update the sidebar
-            const savedPolls = this.pollManager.getAvailablePolls();
-            if (savedPolls.length > 0) {
-                this.uiController.updatePollsList(savedPolls);
-            }
-
-         
-            this.isInitialized = true;
-            console.log('P2P Poll App initialized successfully');
-
-        } catch (error) {
-            console.error('Failed to initialize app:', error);
-            this.uiController?.showNotification('Failed to initialize app: ' + error.message, 'error');
-        }
-    }
-
-    setupEventHandlers() {
-        // Peer manager events
-        this.peerManager.onConnectionStatusChange = (status, peerId) => {
-            this.uiController.updatePeerId(peerId);
-            
-            if (status === 'connected') {
-                this.uiController.showNotification('Connected to P2P network', 'success');
-            } else if (status === 'disconnected') {
-                this.uiController.showNotification('Disconnected from P2P network', 'error');
-            }
-        };
-
-        this.peerManager.onPeerConnected = (peerId) => {
-            this.uiController.showNotification(`Peer ${peerId} connected`, 'success');
-            
-            // If we're the host and have polls, send them to the new peer
-            if (this.peerManager.isHost) {
-                const availablePolls = this.pollManager.getAvailablePolls();
-                if (availablePolls.length > 0) {
-                    availablePolls.forEach(poll => {
-                        this.peerManager.sendMessage(peerId, {
-                            type: 'poll_update',
-                            poll: poll,
-                            senderId: this.peerManager.getPeerId()
-                        });
-                    });
-                    
-                    // Also send current poll if there is one
-                    const currentPoll = this.pollManager.getCurrentPoll();
-                    if (currentPoll) {
-                        this.peerManager.sendMessage(peerId, {
-                            type: 'current_poll',
-                            poll: currentPoll,
-                            senderId: this.peerManager.getPeerId()
-                        });
-                    }
-                }
-            } else {
-                this.peerManager.sendMessage(peerId, {
-                    type: 'sync_request',
-                    senderId: this.peerManager.getPeerId()
-                });
-            }
-        };
-
-        this.peerManager.onPeerDisconnected = (peerId) => {
-            this.uiController.showNotification(`Peer ${peerId} disconnected`, 'info');
-        };
-
-        this.peerManager.onMessageReceived = (message, senderId) => {
-            this.handleMessage(message, senderId);
-        };
-
-        // Poll manager events
-        this.pollManager.onPollCreated = (poll) => {
-            this.uiController.renderPoll(poll);
-        };
-
-        this.pollManager.onPollUpdated = (poll) => {
-            this.uiController.renderPoll(poll);
-        };
-
-        this.pollManager.onPollSelected = (poll) => {
-            if (poll) {
-                this.uiController.renderPoll(poll);
-                this.uiController.showActivePoll();
-            } else {
-                this.uiController.showPollCreation();
-            }
-        };
-
-        this.pollManager.onPollsListUpdated = (polls) => {
-            this.uiController.updatePollsList(polls);
-        };
-    }
-
-    handleMessage(message, senderId) {
-        console.log('Processing message:', message, 'from:', senderId);
-
-        switch (message.type) {
-            case 'poll_update':
-                this.pollManager.syncPoll(message.poll);
-                break;
-
-            case 'current_poll':
-                this.pollManager.syncPoll(message.poll);
-                if (this.pollManager.getCurrentPoll() && this.pollManager.getCurrentPoll().id === message.poll.id) {
-                    this.uiController.renderPoll(message.poll);
-                    this.uiController.showActivePoll();
-                }
-                break;
-
-            case 'vote':
-                this.pollManager.handleVoteMessage(message.optionId, message.voterId);
-                break;
-
-            case 'unvote':
-                this.pollManager.handleUnvoteMessage(message.voterId);
-                break;
-
-            case 'poll_reset':
-                this.pollManager.handlePollReset();
-                break;
-
-            case 'sync_request':
-                    const currentPoll = this.pollManager.getCurrentPoll();
-                if (currentPoll) {
-                    this.peerManager.sendMessage(senderId, {
-                        type: 'current_poll',
-                        poll: currentPoll,
-                        senderId: this.peerManager.getPeerId()
-                    });
-                }
-                
-                const availablePolls = this.pollManager.getAvailablePolls();
-                availablePolls.forEach(poll => {
-                    this.peerManager.sendMessage(senderId, {
-                        type: 'poll_update',
-                        poll: poll,
-                        senderId: this.peerManager.getPeerId()
-                    });
-                });
-                break;
-
-            default:
-                console.warn('Unknown message type:', message.type);
-        }
-    }
-
-    destroy() {
-        if (this.peerManager) {
-            this.peerManager.destroy();
-        }
-    }
-}
-
-document.addEventListener('DOMContentLoaded', async () => {
-    const app = new P2PPollApp();
-    
-    try {
-        await app.initialize();
-    } catch (error) {
-        console.error('App initialization failed:', error);
-        
-        // Show error message to user
-        const errorDiv = document.createElement('div');
-        errorDiv.className = 'notification error';
-        errorDiv.textContent = 'Failed to initialize app. Please refresh the page.';
-        errorDiv.style.position = 'fixed';
-        errorDiv.style.top = '20px';
-        errorDiv.style.right = '20px';
-        errorDiv.style.zIndex = '1001';
-        document.body.appendChild(errorDiv);
-    }
-
-    // Cleanup on page unload
-    window.addEventListener('beforeunload', () => {
-        app.destroy();
-    });
-});
-
-// Handle page visibility changes
-document.addEventListener('visibilitychange', () => {
-    if (document.hidden) {
-        console.log('Page hidden - connection may become unstable');
-    } else {
-        console.log('Page visible - checking connection status');
-    }
-});

js/peer-manager.js

@@ -1,233 +0,0 @@
-class PeerManager {
-    constructor() {
-        this.peer = null;
-        this.connections = new Map();
-        this.roomId = null;
-        this.isHost = false;
-        this.onPeerConnected = null;
-        this.onPeerDisconnected = null;
-        this.onMessageReceived = null;
-        this.onConnectionStatusChange = null;
-    }
-
-    async initialize() {
-        try {
-            this.peer = new Peer({
-                debug: 2,
-                config: {
-                    iceServers: [
-                        { urls: 'stun:stun.l.google.com:19302' },
-                        { urls: 'stun:stun1.l.google.com:19302' }
-                    ]
-                }
-            });
-
-            this.peer.on('open', (id) => {
-                console.log('My peer ID is:', id);
-                this.updateConnectionStatus('connected');
-                this.updatePeersList(); 
-                if (this.onConnectionStatusChange) {
-                    this.onConnectionStatusChange('connected', id);
-                }
-            });
-
-            this.peer.on('connection', (conn) => {
-                this.handleIncomingConnection(conn);
-            });
-
-            this.peer.on('disconnected', () => {
-                this.updateConnectionStatus('disconnected');
-                this.updatePeersList(); 
-            });
-
-            this.peer.on('error', (err) => {
-                console.error('Peer error:', err);
-                this.updateConnectionStatus('error');
-            });
-
-        } catch (error) {
-            console.error('Failed to initialize peer:', error);
-            throw error;
-        }
-    }
-
-    async createRoom() {
-        if (!this.peer) {
-            throw new Error('Peer not initialized');
-        }
-
-        this.roomId = this.generateRoomId();
-        this.isHost = true;
-        
-        console.log('Created room:', this.roomId);
-        return this.roomId;
-    }
-
-    async joinRoom(roomId) {
-        if (!this.peer) {
-            throw new Error('Peer not initialized');
-        }
-
-        this.roomId = roomId;
-        this.isHost = false;
-
-        console.log('Attempting to join room:', roomId);
-        
-
-        try {
-            const conn = this.peer.connect(roomId);
-            await this.setupConnection(conn);
-            console.log('Successfully joined room');
-            return true;
-        } catch (error) {
-            console.error('Failed to join room:', error);
-            throw new Error('Could not connect to host. Make sure the host is online and you have the correct peer ID.');
-        }
-    }
-
-    handleIncomingConnection(conn) {
-        this.setupConnection(conn);
-    }
-
-    async setupConnection(conn) {
-        return new Promise((resolve, reject) => {
-            conn.on('open', () => {
-                console.log('Connected to:', conn.peer);
-                this.connections.set(conn.peer, conn);
-                this.updatePeersList();
-
-                if (this.isHost) {
-                    if (this.onPeerConnected) {
-                        this.onPeerConnected(conn.peer);
-                    }
-                } else {
-                    if (this.onPeerConnected) {
-                        this.onPeerConnected(conn.peer);
-                    }
-                }
-
-                resolve(conn);
-            });
-
-            conn.on('data', (data) => {
-                this.handleMessage(data, conn.peer);
-            });
-
-            conn.on('close', () => {
-                console.log('Connection closed:', conn.peer);
-                this.connections.delete(conn.peer);
-                this.updatePeersList();
-                
-                if (this.onPeerDisconnected) {
-                    this.onPeerDisconnected(conn.peer);
-                }
-            });
-
-            conn.on('error', (err) => {
-                console.error('Connection error:', err);
-                reject(err);
-            });
-        });
-    }
-
-    handleMessage(data, senderId) {
-        console.log('Received message:', data, 'from:', senderId);
-        
-        if (this.onMessageReceived) {
-            this.onMessageReceived(data, senderId);
-        }
-    }
-
-    sendMessage(peerId, message) {
-        const conn = this.connections.get(peerId);
-        if (conn && conn.open) {
-            conn.send(message);
-            return true;
-        }
-        return false;
-    }
-
-    broadcastMessage(message) {
-        let sentCount = 0;
-        this.connections.forEach((conn, peerId) => {
-            if (conn.open) {
-                conn.send(message);
-                sentCount++;
-            }
-        });
-        return sentCount;
-    }
-
-    getPeerId() {
-        return this.peer ? this.peer.id : null;
-    }
-
-    getRoomId() {
-        return this.roomId;
-    }
-
-    getConnectedPeers() {
-        return Array.from(this.connections.keys());
-    }
-
-    getPeerCount() {
-        return this.connections.size;
-    }
-
-    isConnected() {
-        return this.peer && this.peer.disconnected !== true;
-    }
-
-    generateRoomId() {
-        return Math.random().toString(36).substr(2, 9).toUpperCase();
-    }
-
-    updateConnectionStatus(status) {
-        const indicator = document.getElementById('connection-indicator');
-        const statusText = document.getElementById('connection-status-text');
-        
-        if (indicator) {
-            indicator.className = `status-${status}`;
-        }
-        
-        if (statusText) {
-            statusText.textContent = status.charAt(0).toUpperCase() + status.slice(1);
-            statusText.className = `status-text ${status}`;
-        }
-    }
-
-    updatePeersList() {
-        const peersList = document.getElementById('peers');
-        const peerCount = document.getElementById('peer-count');
-        
-        if (peersList && peerCount) {
-            peerCount.textContent = this.getPeerCount();
-            peersList.innerHTML = '';
-            
-            if (this.getPeerCount() === 0) {
-                const li = document.createElement('li');
-                li.textContent = 'No connected peers';
-                li.style.fontStyle = 'italic';
-                li.style.color = '#9ca3af';
-                peersList.appendChild(li);
-            } else {
-                this.getConnectedPeers().forEach(peerId => {
-                    const li = document.createElement('li');
-                    li.textContent = `${peerId} ${peerId === this.peer.id ? '(You)' : ''}`;
-                    li.style.fontWeight = peerId === this.peer.id ? 'bold' : 'normal';
-                    li.style.color = peerId === this.peer.id ? '#667eea' : '#6b7280';
-                    peersList.appendChild(li);
-                });
-            }
-        }
-    }
-
-    destroy() {
-        if (this.peer) {
-            this.connections.forEach(conn => conn.close());
-            this.peer.destroy();
-            this.peer = null;
-            this.connections.clear();
-        }
-    }
-}

js/poll-manager.js

@@ -1,428 +0,0 @@
-class PollManager {
-    constructor(peerManager) {
-        this.peerManager = peerManager;
-        this.currentPoll = null;
-        this.availablePolls = new Map(); // pollId -> poll
-        this.myVotes = new Set();
-        this.onPollUpdated = null;
-        this.onPollCreated = null;
-        this.onPollSelected = null;
-        this.onPollsListUpdated = null;
-    }
-
-    createPoll(question, options) {
-        const poll = {
-            id: this.generatePollId(),
-            question: question.trim(),
-            options: options.map((text, index) => ({
-                id: `opt-${index}`,
-                text: text.trim(),
-                votes: 0,
-                voters: []
-            })),
-            createdBy: this.peerManager.getPeerId(),
-            createdAt: Date.now()
-        };
-
-        // Clear any existing votes when creating a new poll
-        this.myVotes.clear();
-        
-        this.currentPoll = poll;
-        this.availablePolls.set(poll.id, poll);
-        this.saveToLocalStorage();
-        
-        if (this.onPollCreated) {
-            this.onPollCreated(poll);
-        }
-        
-        if (this.onPollsListUpdated) {
-            this.onPollsListUpdated(Array.from(this.availablePolls.values()));
-        }
-
-        // Broadcast new poll to all peers
-        this.broadcastPollUpdate();
-        
-        return poll;
-    }
-
-    addOption(text) {
-        if (!this.currentPoll) {
-            throw new Error('No active poll');
-        }
-
-        const newOption = {
-            id: `opt-${Date.now()}`,
-            text: text.trim(),
-            votes: 0,
-            voters: []
-        };
-
-        this.currentPoll.options.push(newOption);
-        this.saveToLocalStorage();
-        this.notifyPollUpdated();
-        this.broadcastPollUpdate();
-        
-        return newOption;
-    }
-
-    vote(optionId) {
-        if (!this.currentPoll) {
-            throw new Error('No active poll');
-        }
-
-        const myPeerId = this.peerManager.getPeerId();
-        
-        // Check if already voted for this option
-        if (this.myVotes.has(optionId)) {
-            return false; 
-        }
-
-        this.removePreviousVote(myPeerId);
-
-        // Add new vote
-        const option = this.currentPoll.options.find(opt => opt.id === optionId);
-        if (!option) {
-            throw new Error('Option not found');
-        }
-
-        option.votes++;
-        option.voters.push(myPeerId);
-        this.myVotes.add(optionId);
-        
-        this.saveToLocalStorage();
-        this.notifyPollUpdated();
-        this.broadcastVote(optionId, myPeerId);
-        
-        return true;
-    }
-
-    removePreviousVote(peerId) {
-        if (!this.currentPoll) return;
-
-        this.currentPoll.options.forEach(option => {
-            const voterIndex = option.voters.indexOf(peerId);
-            if (voterIndex !== -1) {
-                option.votes--;
-                option.voters.splice(voterIndex, 1);
-                
-                // Remove from my votes if it's my vote
-                if (peerId === this.peerManager.getPeerId()) {
-                    this.myVotes.delete(option.id);
-                }
-            }
-        });
-    }
-
-    resetPoll() {
-        if (!this.currentPoll) {
-            throw new Error('No active poll');
-        }
-
-        this.currentPoll.options.forEach(option => {
-            option.votes = 0;
-            option.voters = [];
-        });
-
-        this.myVotes.clear();
-        this.saveToLocalStorage();
-        this.notifyPollUpdated();
-        this.broadcastPollReset();
-    }
-
-    syncPoll(pollData) {
-        if (!this.availablePolls.has(pollData.id)) {
-            this.availablePolls.set(pollData.id, pollData);
-            this.saveToLocalStorage();
-            
-            if (this.onPollsListUpdated) {
-                this.onPollsListUpdated(Array.from(this.availablePolls.values()));
-            }
-        }
-        
-        if (!this.currentPoll || this.currentPoll.id === pollData.id) {
-            this.currentPoll = pollData;
-            this.availablePolls.set(pollData.id, pollData);
-            
-            this.validateMyVotes(pollData);
-            
-            this.saveToLocalStorage();
-            if (this.onPollCreated) {
-                this.onPollCreated(pollData);
-            }
-        } else if (this.currentPoll.id === pollData.id) {
-            this.mergePollData(pollData);
-            this.availablePolls.set(pollData.id, this.currentPoll);
-            
-            this.validateMyVotes(this.currentPoll);
-            
-            this.saveToLocalStorage();
-            this.notifyPollUpdated();
-        }
-    }
-
-    mergePollData(remotePoll) {
-        const localOptions = new Map(this.currentPoll.options.map(opt => [opt.id, opt]));
-        const remoteOptions = new Map(remotePoll.options.map(opt => [opt.id, opt]));
-
-        remoteOptions.forEach((remoteOpt, id) => {
-            if (!localOptions.has(id)) {
-                this.currentPoll.options.push(remoteOpt);
-                localOptions.set(id, remoteOpt);
-            }
-        });
-
-        this.currentPoll.options.forEach(localOpt => {
-            const remoteOpt = remoteOptions.get(localOpt.id);
-            if (remoteOpt) {
-                const allVoters = new Set([...localOpt.voters, ...remoteOpt.voters]);
-                localOpt.voters = Array.from(allVoters);
-                localOpt.votes = localOpt.voters.length;
-            }
-        });
-    }
-
-    handleVoteMessage(optionId, voterId) {
-        if (!this.currentPoll) return;
-
-        this.removePreviousVote(voterId);
-
-        const option = this.currentPoll.options.find(opt => opt.id === optionId);
-        if (option && !option.voters.includes(voterId)) {
-            option.votes++;
-            option.voters.push(voterId);
-            
-            // Update my votes if this is my vote
-            if (voterId === this.peerManager.getPeerId()) {
-                this.myVotes.add(optionId);
-            }
-            
-            this.saveToLocalStorage();
-            this.notifyPollUpdated();
-        }
-    }
-
-    handleUnvoteMessage(voterId) {
-        if (!this.currentPoll) return;
-
-        // Remove vote from this voter
-        this.removePreviousVote(voterId);
-        
-        // Update my votes if this is my vote
-        if (voterId === this.peerManager.getPeerId()) {
-            this.myVotes.clear();
-        }
-        
-        this.saveToLocalStorage();
-        this.notifyPollUpdated();
-    }
-
-    handlePollReset() {
-        if (!this.currentPoll) return;
-
-        this.currentPoll.options.forEach(option => {
-            option.votes = 0;
-            option.voters = [];
-        });
-
-        this.myVotes.clear();
-        this.saveToLocalStorage();
-        this.notifyPollUpdated();
-    }
-
-    broadcastPollUpdate() {
-        if (!this.currentPoll) return;
-
-        this.peerManager.broadcastMessage({
-            type: 'poll_update',
-            poll: this.currentPoll,
-            senderId: this.peerManager.getPeerId()
-        });
-    }
-
-    broadcastVote(optionId, voterId) {
-        this.peerManager.broadcastMessage({
-            type: 'vote',
-            optionId: optionId,
-            voterId: voterId,
-            senderId: this.peerManager.getPeerId()
-        });
-    }
-
-    broadcastPollReset() {
-        this.peerManager.broadcastMessage({
-            type: 'poll_reset',
-            senderId: this.peerManager.getPeerId()
-        });
-    }
-
-    selectPoll(pollId) {
-        const poll = this.availablePolls.get(pollId);
-        if (poll) {
-            this.currentPoll = poll;
-            
-            // Clear votes when switching to a different poll
-            // Only clear if this is a different poll than what we had voted in
-            const currentVotedOption = this.getMyVotedOption();
-            if (currentVotedOption && !poll.options.some(opt => opt.id === currentVotedOption)) {
-                this.myVotes.clear();
-            }
-            
-            this.saveToLocalStorage();
-            
-            if (this.onPollSelected) {
-                this.onPollSelected(poll);
-            }
-            
-            if (this.onPollUpdated) {
-                this.onPollUpdated(poll);
-            }
-            
-            return true;
-        }
-        return false;
-    }
-
-    createNewPoll() {
-        this.currentPoll = null;
-        // Clear current poll inputs but keep available polls
-        if (this.onPollSelected) {
-            this.onPollSelected(null);
-        }
-    }
-
-    getAvailablePolls() {
-        return Array.from(this.availablePolls.values());
-    }
-
-    unvote() {
-        if (!this.currentPoll) {
-            throw new Error('No active poll');
-        }
-
-        const myPeerId = this.peerManager.getPeerId();
-        const myVotedOption = this.getMyVotedOption();
-        
-        if (!myVotedOption) {
-            return false; // No vote to remove
-        }
-
-        // Remove vote from current option
-        this.removePreviousVote(myPeerId);
-        
-        this.saveToLocalStorage();
-        this.notifyPollUpdated();
-        this.broadcastUnvote(myPeerId);
-        
-        return true;
-    }
-
-    validateMyVotes(poll) {
-        const myPeerId = this.peerManager.getPeerId();
-        const validVotes = new Set();
-        
-        console.log('Validating votes for peer:', myPeerId);
-        console.log('Current myVotes:', Array.from(this.myVotes));
-        console.log('Poll voters:', poll.options.map(opt => ({ id: opt.id, voters: opt.voters })));
-        
-        // Check each vote in myVotes to see if it's actually mine
-        this.myVotes.forEach(optionId => {
-            const option = poll.options.find(opt => opt.id === optionId);
-            if (option && option.voters.includes(myPeerId)) {
-                // This vote is actually mine
-                validVotes.add(optionId);
-                console.log(`Vote ${optionId} is valid for peer ${myPeerId}`);
-            } else {
-                console.log(`Vote ${optionId} is NOT valid for peer ${myPeerId}`);
-            }
-        });
-        
-        // Replace myVotes with only the valid votes
-        this.myVotes = validVotes;
-        console.log('Final valid votes:', Array.from(this.myVotes));
-    }
-
-    getCurrentPoll() {
-        return this.currentPoll;
-    }
-
-    broadcastUnvote(peerId) {
-        this.peerManager.broadcastMessage({
-            type: 'unvote',
-            voterId: peerId,
-            senderId: this.peerManager.getPeerId()
-        });
-    }
-
-    hasVoted(optionId) {
-        return this.myVotes.has(optionId);
-    }
-
-    getMyVotedOption() {
-        return Array.from(this.myVotes)[0] || null;
-    }
-
-    generatePollId() {
-        return `poll-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`;
-    }
-
-    saveToLocalStorage() {
-        // Save all available polls
-        const pollsData = Array.from(this.availablePolls.values());
-        localStorage.setItem('p2p-polls-list', JSON.stringify(pollsData));
-        
-        // Save current poll separately
-        if (this.currentPoll) {
-            localStorage.setItem('p2p-poll-current', JSON.stringify(this.currentPoll));
-        } else {
-            localStorage.removeItem('p2p-poll-current');
-        }
-        
-        localStorage.setItem('p2p-poll-my-votes', JSON.stringify(Array.from(this.myVotes)));
-    }
-
-    loadFromLocalStorage() {
-        try {
-            const savedPollsList = localStorage.getItem('p2p-polls-list');
-            const savedVotes = localStorage.getItem('p2p-poll-my-votes');
-            
-            if (savedPollsList) {
-                const polls = JSON.parse(savedPollsList);
-                this.availablePolls.clear();
-                polls.forEach(poll => {
-                    this.availablePolls.set(poll.id, poll);
-                });
-                
-                if (this.onPollsListUpdated) {
-                    this.onPollsListUpdated(polls);
-                }
-            }
-            
-            if (savedVotes) {
-                this.myVotes = new Set(JSON.parse(savedVotes));
-                
-                // Validate votes against current poll
-                const currentPoll = this.currentPoll || this.availablePolls.values().next().value;
-                if (currentPoll) {
-                    this.validateMyVotes(currentPoll);
-                }
-            }
-        } catch (error) {
-            console.error('Failed to load from localStorage:', error);
-        }
-    }
-
-    clearData() {
-        this.currentPoll = null;
-        this.availablePolls.clear();
-        this.myVotes.clear();
-        localStorage.removeItem('p2p-poll-current');
-        localStorage.removeItem('p2p-polls-list');
-        localStorage.removeItem('p2p-poll-my-votes');
-    }
-
-    notifyPollUpdated() {
-        if (this.onPollUpdated) {
-            this.onPollUpdated(this.currentPoll);
-        }
-    }
-}

js/ui-controller.js

@@ -1,419 +0,0 @@
-class UIController {
-    constructor(peerManager, pollManager) {
-        this.peerManager = peerManager;
-        this.pollManager = pollManager;
-        this.initializeEventListeners();
-    }
-
-    initializeEventListeners() {
-        // Connection controls
-        document.getElementById('join-btn').addEventListener('click', () => this.handleJoinRoom());
-        document.getElementById('copy-id-btn').addEventListener('click', () => this.copyPeerId());
-        
-        // Poll creation
-        document.getElementById('create-poll-btn').addEventListener('click', () => this.handleCreatePoll());
-        document.getElementById('add-option-btn').addEventListener('click', () => this.addOptionInput());
-        
-        // Active poll
-        document.getElementById('add-poll-option-btn').addEventListener('click', () => this.showAddOptionModal());
-        document.getElementById('reset-poll-btn').addEventListener('click', () => this.handleResetPoll());
-        document.getElementById('new-poll-btn').addEventListener('click', () => this.handleNewPoll());
-        
-        // Modal controls
-        document.getElementById('close-modal-btn').addEventListener('click', () => this.hideAddOptionModal());
-        document.getElementById('cancel-modal-btn').addEventListener('click', () => this.hideAddOptionModal());
-        document.getElementById('save-option-btn').addEventListener('click', () => this.handleAddOptionFromModal());
-        
-        // Enter key handlers
-        document.getElementById('room-id').addEventListener('keypress', (e) => {
-            if (e.key === 'Enter') this.handleJoinRoom();
-        });
-        
-        document.getElementById('poll-question').addEventListener('keypress', (e) => {
-            if (e.key === 'Enter') this.handleCreatePoll();
-        });
-        
-        document.getElementById('new-option-input').addEventListener('keypress', (e) => {
-            if (e.key === 'Enter') this.handleAddOptionFromModal();
-        });
-        
-        // Close modal on background click
-        document.getElementById('add-option-modal').addEventListener('click', (e) => {
-            if (e.target.id === 'add-option-modal') {
-                this.hideAddOptionModal();
-            }
-        });
-    }
-
-    handleJoinRoom() {
-        const roomIdInput = document.getElementById('room-id');
-        const peerId = roomIdInput.value.trim();
-        
-        this.showLoading(true);
-        
-        if (peerId) {
-            // Connect to existing peer (host)
-            this.peerManager.joinRoom(peerId)
-                .then(() => {
-                    this.showNotification('Connected to host successfully!', 'success');
-                    this.showPollCreation();
-                })
-                .catch(error => {
-                    this.showNotification('Failed to connect: ' + error.message, 'error');
-                    console.error('Connect error:', error);
-                })
-                .finally(() => {
-                    this.showLoading(false);
-                });
-        } else {
-            // Act as host - just show poll creation
-            this.peerManager.createRoom();
-            this.showNotification('You are the host. Share your Peer ID with others to connect.', 'success');
-            this.showPollCreation();
-            this.showLoading(false);
-        }
-    }
-
-    async copyPeerId() {
-        const peerId = this.peerManager.getPeerId();
-        if (peerId) {
-            try {
-                await navigator.clipboard.writeText(peerId);
-                this.showNotification('Peer ID copied to clipboard!', 'success');
-            } catch (error) {
-                // Fallback for older browsers
-                const textArea = document.createElement('textarea');
-                textArea.value = peerId;
-                document.body.appendChild(textArea);
-                textArea.select();
-                document.execCommand('copy');
-                document.body.removeChild(textArea);
-                this.showNotification('Peer ID copied to clipboard!', 'success');
-            }
-        }
-    }
-
-    handleCreatePoll() {
-        const questionInput = document.getElementById('poll-question');
-        const optionInputs = document.querySelectorAll('.option-text');
-        const options = [];
-
-        console.log('Question input:', questionInput);
-        console.log('Found option inputs:', optionInputs.length);
-
-        // Check if question input exists
-        if (!questionInput) {
-            console.error('Question input not found!');
-            this.showNotification('Error: Question input not found', 'error');
-            return;
-        }
-
-        const question = questionInput.value ? questionInput.value.trim() : '';
-        console.log('Question:', question);
-
-        optionInputs.forEach((input, index) => {
-            console.log(`Input ${index}:`, input, 'value:', input?.value);
-            if (input && typeof input.value !== 'undefined') {
-                const text = input.value.trim();
-                if (text) {
-                    options.push(text);
-                }
-            } else {
-                console.warn(`Input ${index} is invalid or has no value property`);
-            }
-        });
-
-        console.log('Final options:', options);
-
-        if (!question) {
-            this.showNotification('Please enter a poll question', 'error');
-            return;
-        }
-
-        if (options.length < 2) {
-            this.showNotification('Please enter at least 2 options', 'error');
-            return;
-        }
-
-        try {
-            this.pollManager.createPoll(question, options);
-            this.showNotification('Poll created successfully!', 'success');
-        } catch (error) {
-            console.error('Create poll error:', error);
-            this.showNotification('Failed to create poll: ' + error.message, 'error');
-        }
-    }
-
-    showAddOptionModal() {
-        const modal = document.getElementById('add-option-modal');
-        const input = document.getElementById('new-option-input');
-        modal.classList.remove('hidden');
-        input.value = '';
-        input.focus();
-    }
-
-    hideAddOptionModal() {
-        const modal = document.getElementById('add-option-modal');
-        const input = document.getElementById('new-option-input');
-        modal.classList.add('hidden');
-        input.value = '';
-    }
-
-    handleAddOptionFromModal() {
-        const input = document.getElementById('new-option-input');
-        const optionText = input.value.trim();
-        
-        if (!optionText) {
-            this.showNotification('Please enter an option text', 'error');
-            return;
-        }
-        
-        try {
-            this.pollManager.addOption(optionText);
-            this.hideAddOptionModal();
-            this.showNotification('Option added successfully!', 'success');
-        } catch (error) {
-            this.showNotification('Failed to add option: ' + error.message, 'error');
-        }
-    }
-
-    handleAddPollOption() {
-        this.showAddOptionModal();
-    }
-
-    handleResetPoll() {
-        if (confirm('Are you sure you want to reset all votes?')) {
-            try {
-                this.pollManager.resetPoll();
-                this.showNotification('Poll reset successfully!', 'success');
-            } catch (error) {
-                this.showNotification('Failed to reset poll: ' + error.message, 'error');
-            }
-        }
-    }
-
-    handleNewPoll() {
-        this.pollManager.createNewPoll();
-        this.showPollCreation();
-        this.clearPollForm();
-    }
-
-    addOptionInput() {
-        const container = document.getElementById('options-container');
-        const optionCount = container.children.length;
-        
-        const optionDiv = document.createElement('div');
-        optionDiv.className = 'option-input';
-        optionDiv.innerHTML = `
-            <input type="text" class="option-text" placeholder="Option ${optionCount + 1}">
-            <button class="remove-option-btn">Remove</button>
-        `;
-
-        container.appendChild(optionDiv);
-        this.updateOptionRemoveButtons();
-
-        // Add event listener to new input
-        const newInput = optionDiv.querySelector('.option-text');
-        newInput.addEventListener('keypress', (e) => {
-            if (e.key === 'Enter') this.handleCreatePoll();
-        });
-
-        // Add event listener to remove button
-        const removeBtn = optionDiv.querySelector('.remove-option-btn');
-        removeBtn.addEventListener('click', () => {
-            optionDiv.remove();
-            this.updateOptionRemoveButtons();
-            this.updateOptionPlaceholders();
-        });
-
-        // Focus on new input
-        newInput.focus();
-    }
-
-    updateOptionRemoveButtons() {
-        const optionInputs = document.querySelectorAll('.option-input');
-        const removeButtons = document.querySelectorAll('.remove-option-btn');
-        
-        removeButtons.forEach((btn, index) => {
-            if (optionInputs.length <= 2) {
-                btn.classList.add('hidden');
-            } else {
-                btn.classList.remove('hidden');
-            }
-        });
-    }
-
-    updateOptionPlaceholders() {
-        const optionInputs = document.querySelectorAll('.option-text');
-        optionInputs.forEach((input, index) => {
-            input.placeholder = `Option ${index + 1}`;
-        });
-    }
-
-    clearPollForm() {
-        document.getElementById('poll-question').value = '';
-        const container = document.getElementById('options-container');
-        container.innerHTML = `
-            <div class="option-input">
-                <input type="text" class="option-text" placeholder="Option 1">
-                <button class="remove-option-btn hidden">Remove</button>
-            </div>
-            <div class="option-input">
-                <input type="text" class="option-text" placeholder="Option 2">
-                <button class="remove-option-btn hidden">Remove</button>
-            </div>
-        `;
-        this.updateOptionRemoveButtons();
-    }
-
-    showPollCreation() {
-        document.getElementById('connection-section').classList.add('hidden');
-        document.getElementById('poll-creation').classList.remove('hidden');
-        document.getElementById('active-poll').classList.add('hidden');
-    }
-
-    showActivePoll() {
-        document.getElementById('connection-section').classList.add('hidden');
-        document.getElementById('poll-creation').classList.add('hidden');
-        document.getElementById('active-poll').classList.remove('hidden');
-    }
-
-    updatePeerId(peerId) {
-        const element = document.getElementById('peer-id');
-        if (element) {
-            element.textContent = peerId || 'Loading...';
-        }
-    }
-
-    renderPoll(poll) {
-        if (!poll) return;
-
-        this.showActivePoll();
-        
-        // Update poll question
-        document.getElementById('poll-question-display').textContent = poll.question;
-        
-        // Render options
-        const optionsContainer = document.getElementById('poll-options');
-        optionsContainer.innerHTML = '';
-        
-        const totalVotes = poll.options.reduce((sum, opt) => sum + opt.votes, 0);
-        const myVotedOption = this.pollManager.getMyVotedOption();
-        
-        poll.options.forEach(option => {
-            const optionDiv = document.createElement('div');
-            optionDiv.className = 'poll-option';
-            
-            const hasVoted = this.pollManager.hasVoted(option.id);
-            const myVotedOption = this.pollManager.getMyVotedOption();
-            
-            console.log(`Option ${option.id}: hasVoted=${hasVoted}, myVotedOption=${myVotedOption}`);
-            
-            if (hasVoted) {
-                optionDiv.classList.add('voted');
-            } else if (myVotedOption) {
-                // User has voted but not for this option - this is a change vote option
-                optionDiv.classList.add('change-vote');
-            }
-            
-            const percentage = totalVotes > 0 ? (option.votes / totalVotes * 100).toFixed(1) : 0;
-            
-            optionDiv.innerHTML = `
-                <div class="option-header">
-                    <span class="option-text">${option.text}</span>
-                    <span class="vote-count">${option.votes} votes</span>
-                </div>
-                <div class="vote-bar">
-                    <div class="vote-fill" style="width: ${percentage}%"></div>
-                </div>
-            `;
-            
-            optionDiv.addEventListener('click', () => {
-                const myVotedOption = this.pollManager.getMyVotedOption();
-                
-                if (this.pollManager.hasVoted(option.id)) {
-                    // Clicking your current vote - unvote
-                    if (confirm('Remove your vote?')) {
-                        const success = this.pollManager.unvote();
-                        if (success) {
-                            this.showNotification('Vote removed!', 'success');
-                        }
-                    }
-                } else {
-                    // Either first vote or changing vote
-                    const success = this.pollManager.vote(option.id);
-                    if (success) {
-                        if (myVotedOption) {
-                            this.showNotification('Vote changed successfully!', 'success');
-                        } else {
-                            this.showNotification('Vote recorded!', 'success');
-                        }
-                    }
-                }
-            });
-            
-            optionsContainer.appendChild(optionDiv);
-        });
-    }
-
-    showNotification(message, type = 'info') {
-        const notification = document.getElementById('notification');
-        notification.textContent = message;
-        notification.className = `notification ${type}`;
-        notification.classList.remove('hidden');
-        
-        setTimeout(() => {
-            notification.classList.add('hidden');
-        }, 3000);
-    }
-
-    showLoading(show) {
-        const overlay = document.getElementById('loading-overlay');
-        if (show) {
-            overlay.classList.remove('hidden');
-        } else {
-            overlay.classList.add('hidden');
-        }
-    }
-
-    updatePeersList() {
-        // Use the peer manager's updatePeersList method
-        this.peerManager.updatePeersList();
-    }
-
-    updatePollsList(polls) {
-        const pollsList = document.getElementById('polls-list');
-        
-        if (!pollsList) return;
-        
-        if (polls.length === 0) {
-            pollsList.innerHTML = '<p class="no-polls">No polls created yet</p>';
-            return;
-        }
-        
-        pollsList.innerHTML = '';
-        
-        polls.forEach(poll => {
-            const pollDiv = document.createElement('div');
-            pollDiv.className = 'poll-item';
-            
-            if (this.pollManager.getCurrentPoll() && this.pollManager.getCurrentPoll().id === poll.id) {
-                pollDiv.classList.add('active');
-            }
-            
-            const totalVotes = poll.options.reduce((sum, opt) => sum + opt.votes, 0);
-            const createdDate = new Date(poll.createdAt).toLocaleString();
-            
-            pollDiv.innerHTML = `
-                <div class="poll-item-title">${poll.question}</div>
-                <div class="poll-item-meta">${totalVotes} votes • ${createdDate}</div>
-            `;
-            
-            pollDiv.addEventListener('click', () => {
-                this.pollManager.selectPoll(poll.id);
-            });
-            
-            pollsList.appendChild(pollDiv);
-        });
-    }
-}

nuxt.config.ts

@@ -0,0 +1,23 @@
+// https://nuxt.com/docs/api/configuration/nuxt-config
+export default defineNuxtConfig({
+  compatibilityDate: '2025-07-15',
+  devtools: { enabled: true },
+  vite: {
+    optimizeDeps: {
+      include: ['yjs', 'y-webrtc']
+    }
+  },
+  // ... existing config
+  nitro: {
+    storage: {
+      polls: {
+        driver: 'fs',
+        base: './.data/polls'
+      },
+      users: {
+        driver: 'fs',
+        base: './.data/users'
+      }
+    }
+  }
+})

package.json

@@ -0,0 +1,20 @@
+{
+  "name": "p2p-poll",
+  "type": "module",
+  "private": true,
+  "scripts": {
+    "build": "nuxt build",
+    "dev": "PORT=4444 npx y-webrtc & nuxt dev",
+    "generate": "nuxt generate",
+    "preview": "nuxt preview",
+    "postinstall": "nuxt prepare"
+  },
+  "dependencies": {
+    "nuxt": "^4.1.3",
+    "uuid": "^13.0.0",
+    "vue": "^3.5.30",
+    "vue-router": "^5.0.3",
+    "y-webrtc": "^10.3.0",
+    "yjs": "^13.6.30"
+  }
+}

public/robots.txt

@@ -0,0 +1,2 @@
+User-Agent: *
+Disallow:

server/api/polls/[id].ts

@@ -0,0 +1,94 @@
+import * as Y from 'yjs';
+// server/api/polls/[id].ts
+export default defineEventHandler(async (event) => {
+    const method = event.node.req.method;
+    const pollId = getRouterParam(event, 'id');
+
+    // We use Nitro's built-in storage. 
+    // 'polls' is the storage namespace.
+    const storage = useStorage('polls'); 
+
+    if (!pollId) {
+        throw createError({ statusCode: 400, statusMessage: 'Poll ID required' });
+    }
+
+    // GET: Fetch the saved Yjs document state
+    if (method === 'GET') {
+        const data = await storage.getItem(`poll:${pollId}`);
+        
+        // Fetch all user public keys to include in response
+        const userStorage = useStorage('users');
+        const publicKeys: Record<string, string> = {};
+        
+        // Get all user keys from storage
+        const keys = await userStorage.getKeys();
+        for (const key of keys) {
+            if (key.startsWith('user:')) {
+                const userId = key.replace('user:', '');
+                const publicKey = await userStorage.getItem(key);
+                if (publicKey) {
+                    publicKeys[userId] = String(publicKey);
+                }
+            }
+        }
+        
+        // Return the array of numbers (or null if it doesn't exist yet) along with public keys
+        return { update: data || null, publicKeys };
+    }
+
+    // POST: Save a new Yjs document state
+    if (method === 'POST') {
+        const body = await readBody(event);
+
+        if (body.update && Array.isArray(body.update)) {
+            // create a temp Y.Doc to encode the Data
+            const tempDoc = new Y.Doc();
+            Y.applyUpdate(tempDoc, new Uint8Array(body.update));
+            const yMap = tempDoc.getMap('shared-poll');
+            const pollData = yMap.toJSON();
+
+            // verify pollData
+            for(var option in pollData){
+                const votes = pollData[option] || [];
+                var pubKeys: CryptoKey[] = [];
+
+                const verifyAllVotesForOption = async (votes: SignedData<VoteData>[]) => {
+                    console.log("verifying votes for option " + option,votes);
+                    // check last votes first. if there is something wrong, its likely in the last vote.
+                    for (let i = votes.length-1; i >= 0 ; i--) {
+                        const userStorage = useStorage('users'); 
+                        const votePubKeyString = await userStorage.getItem(`user:${votes[i]?.data.userid}`);
+                        
+                        // Check if public key exists for this user
+                        if (!votePubKeyString) {
+                            console.error(`Error! No public key found for user: ${votes[i]?.data.userid}`);
+                            throw createError({ 
+                                statusCode: 400, 
+                                statusMessage: `Vote from unknown user: ${votes[i]?.data.userid}. User must be registered to vote.` 
+                            });
+                        }
+                        
+                        const votePubKey = await stringToCryptoKey(String(votePubKeyString),'public')
+                        const isValid = await verifyChainedVote(votes, i,votePubKey);
+                        if(!isValid){
+                            console.error("Error! Invalid Vote at: " + i,votes)
+                            return false;
+                        }
+                    }
+                    return true;
+                };
+                const verified = await verifyAllVotesForOption(votes);
+                if(!verified){
+                    console.error("Failed to verify option: "+option)
+                    throw createError({ statusCode: 400, statusMessage: 'PollData contains unverifyable content!' });
+                }
+            }
+
+            // Save the binary update (sent as an array of numbers) to storage
+            await storage.setItem(`poll:${pollId}`, body.update);
+            return { success: true };
+        }
+
+        throw createError({ statusCode: 400, statusMessage: 'Invalid update payload' });
+    }
+});

server/api/polls/index.get.ts

@@ -0,0 +1,15 @@
+// server/api/polls/index.get.ts
+export default defineEventHandler(async () => {
+    const storage = useStorage('polls');
+    
+    // Get all keys in the 'polls' namespace
+    const allKeys = await storage.getKeys();
+    
+    // Filter for our specific poll prefix and strip it for the UI
+    // poll:my-id -> my-id
+    const polls = allKeys
+        .filter(key => key.startsWith('poll:'))
+        .map(key => key.replace('poll:', ''));
+
+    return { polls };
+});

server/api/users/[id].ts

@@ -0,0 +1,82 @@
+// server/api/users/[id].ts
+
+// Simple in-memory rate limiter
+const rateLimitMap = new Map<string, { count: number; resetTime: number }>();
+const RATE_LIMIT_WINDOW = 60000; // 1 minute
+const RATE_LIMIT_MAX = 10; // 10 requests per minute per admin
+
+function checkRateLimit(adminToken: string): boolean {
+    const now = Date.now();
+    const limit = rateLimitMap.get(adminToken);
+    
+    if (!limit || now > limit.resetTime) {
+        rateLimitMap.set(adminToken, { count: 1, resetTime: now + RATE_LIMIT_WINDOW });
+        return true;
+    }
+    
+    if (limit.count >= RATE_LIMIT_MAX) {
+        return false;
+    }
+    
+    limit.count++;
+    return true;
+}
+
+export default defineEventHandler(async (event) => {
+    const method = event.node.req.method;
+    const userId = getRouterParam(event, 'id');
+
+    // We use Nitro's built-in storage. 
+    // 'polls' is the storage namespace.
+    const storage = useStorage('users'); 
+
+    if (!userId) {
+        throw createError({ statusCode: 400, statusMessage: 'User ID required' });
+    }
+
+    // GET: Fetch the saved Yjs document state
+    if (method === 'GET') {
+        const data = await storage.getItem(`user:${userId}`);
+        // Return the array of numbers (or null if it doesn't exist yet)
+        return { public_key: data };
+    }
+
+    // POST: Save a new Yjs document state
+    if (method === 'POST') {
+        // Check for authentication
+        const authHeader = getHeader(event, 'authorization');
+        const adminApiKey = process.env.ADMIN_API_KEY || 'default-admin-key-change-in-production';
+        
+        if (!authHeader || !authHeader.startsWith('Bearer ')) {
+            throw createError({ statusCode: 401, statusMessage: 'Authorization header required' });
+        }
+        
+        const token = authHeader.replace('Bearer ', '');
+        if (token !== adminApiKey) {
+            throw createError({ statusCode: 403, statusMessage: 'Invalid or expired token' });
+        }
+        
+        // Check rate limiting
+        if (!checkRateLimit(token)) {
+            throw createError({ statusCode: 429, statusMessage: 'Rate limit exceeded. Try again later.' });
+        }
+        
+        const body = await readBody(event);
+
+        if (body.public_key) {
+            const data = await storage.getItem(`user:${userId}`);
+
+            if (data == undefined || data == null) {
+                // Save the binary update (sent as an array of numbers) to storage
+                await storage.setItem(`user:${userId}`, body.public_key);
+                console.log("New User created: " + userId)
+                console.log("Public Key: " + body.public_key);
+                return { success: true };
+            }
+
+            throw createError({ statusCode: 400, statusMessage: 'User already exists.' });
+        }
+
+        throw createError({ statusCode: 400, statusMessage: 'Invalid update payload' });
+    }
+});

server/utils/crypto.ts

@@ -0,0 +1,89 @@
+import { SignedData, VoteData } from "./types";
+/**
+ * Gets the WebCrypto API regardless of environment (Node vs Browser)
+ */
+const getCrypto = () => {
+  return (globalThis as any).crypto;
+};
+
+export const verifyVote = async (data: any, signatureStr: string, publicKey: CryptoKey) => {
+  const encoder = new TextEncoder();
+  const encodedData = encoder.encode(JSON.stringify(data));
+  
+  // Convert Base64 back to Uint8Array
+  const signature = Uint8Array.from(atob(signatureStr), c => c.charCodeAt(0));
+
+  return await getCrypto().subtle.verify(
+    "RSASSA-PKCS1-v1_5",
+    publicKey,
+    signature,
+    encodedData
+  );
+};
+
+/**
+ * Verifies a specific vote within an array of votes by 
+ * reconstructing the "signed state" at that point in time.
+ */
+export const verifyChainedVote = async (
+    voteData: SignedData<VoteData>[], 
+    index: number,
+    pubKey: CryptoKey
+) => {
+    const voteToVerify = voteData[index];
+    console.log("Verifying vote: " + voteToVerify)
+    if(voteToVerify) {
+       
+        const historicalState = voteData.slice(0, index + 1).map((v, i) => {
+            if (i === index) {
+                // For the current vote, the signature must be empty string
+                // because it wasn't signed yet when passed to signVote
+                return { ...v, signature: "" };
+            }
+            return v;
+        });
+
+        try {
+            // 3. Verify: Does this historicalState match the signature?
+            return await verifyVote(historicalState, voteToVerify.signature, pubKey);
+        } catch (err) {
+            console.error("Verification failed")
+            console.error(err);
+            return false;
+        }
+    }
+    console.error("Vote is undefined or null");
+    return false;
+};
+
+
+/**
+ * Converts a Base64 string back into a usable CryptoKey object
+ * @param keyStr The Base64 string (without PEM headers)
+ * @param type 'public' or 'private'
+ */
+export const stringToCryptoKey = async (keyStr: string, type: 'public' | 'private'): Promise<CryptoKey> => {
+  // 1. Convert Base64 string to a Uint8Array (binary)
+  const binaryString = Buffer.from(keyStr, 'base64').toString('binary');
+  const bytes = new Uint8Array(binaryString.length);
+  for (let i = 0; i < binaryString.length; i++) {
+    bytes[i] = binaryString.charCodeAt(i);
+  }
+
+  // 2. Identify the format based on the key type
+  // Public keys usually use 'spki', Private keys use 'pkcs8'
+  const format = type === 'public' ? 'spki' : 'pkcs8';
+  const usages: KeyUsage[] = type === 'public' ? ['verify'] : ['sign'];
+
+  // 3. Import the key
+  return await getCrypto().subtle.importKey(
+    format,
+    bytes.buffer,
+    {
+      name: "RSASSA-PKCS1-v1_5",
+      hash: "SHA-256",
+    },
+    true, // extractable (set to false if you want to lock it in memory)
+    usages
+  );
+};

server/utils/types.ts

@@ -0,0 +1,36 @@
+export interface PollProps {
+    userid: string | undefined,
+    activePollId: string,
+    pollData: PollData,
+    addOption: (name: string) => void,
+    vote: (optionName: string) => void
+}
+
+export interface PollListProps {
+    userid: string | undefined,
+}
+
+export interface PollData extends Record<string, SignedData<VoteData>[]> {
+}
+
+export interface SignedData<T> {
+    data: T,
+    signature: string
+}
+
+export interface VoteData {
+    userid: string,
+    timestamp: string
+}
+
+export interface OptionData {
+    userid: string,
+    timestamp: string,
+    optionName: string
+}
+
+export interface UserData {
+    userid: string,
+    private_key: CryptoKey | undefined,
+    public_key: CryptoKey | undefined
+}

tsconfig.json

@@ -0,0 +1,18 @@
+{
+  // https://nuxt.com/docs/guide/concepts/typescript
+  "files": [],
+  "references": [
+    {
+      "path": "./.nuxt/tsconfig.app.json"
+    },
+    {
+      "path": "./.nuxt/tsconfig.server.json"
+    },
+    {
+      "path": "./.nuxt/tsconfig.shared.json"
+    },
+    {
+      "path": "./.nuxt/tsconfig.node.json"
+    }
+  ]
+}