forked from PrivateCoffee/transfer.coffee
feat: add initial WebTorrent-based file transfer app
- Initialize new Express application for file transfer using WebTorrent. - Set up routes for generating and retrieving mnemonics and info hashes. - Implement custom BitTorrent tracker server with WebSockets. - Add `.gitignore` to exclude `node_modules/`. - Create `index.ejs` for front-end with file upload and download functionalities. - Initialize `package.json` and `package-lock.json` with necessary dependencies.
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6 changed files with 3926 additions and 0 deletions
1
.gitignore
vendored
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1
.gitignore
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node_modules/
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34
app.js
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app.js
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import express from 'express';
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import path from 'path';
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import { fileURLToPath } from 'url';
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import bip39 from 'bip39';
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const __filename = fileURLToPath(import.meta.url);
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const __dirname = path.dirname(__filename);
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const app = express();
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const trackerUrl = process.env.TRACKER_URL || 'ws://localhost:8106';
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app.set('view engine', 'ejs');
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app.use(express.static(path.join(__dirname, 'public')));
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app.get('/', (req, res) => {
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res.render('index', { trackerUrl });
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});
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app.get('/generate-mnemonic/:infoHash', (req, res) => {
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const infoHash = req.params.infoHash;
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const mnemonic = bip39.entropyToMnemonic(infoHash);
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res.json({ mnemonic });
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});
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app.get('/get-infohash/:mnemonic', (req, res) => {
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const mnemonic = req.params.mnemonic;
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const infoHash = bip39.mnemonicToEntropy(mnemonic);
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res.json({ infoHash });
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});
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const PORT = process.env.PORT || 8105;
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app.listen(PORT, () => {
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console.log(`Server is running on port ${PORT}`);
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});
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3660
package-lock.json
generated
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3660
package-lock.json
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27
package.json
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package.json
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{
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"name": "transfer.coffee",
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"version": "0.0.1",
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"description": "A WebTorrent-based file transfer application",
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"main": "app.js",
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"type": "module",
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"scripts": {
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"test": "echo \"Error: no test specified\" && exit 1",
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"start": "node app.js",
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"tracker": "node tracker.js"
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},
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"repository": {
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"type": "git",
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"url": "https://git.private.coffee/PrivateCoffee/transfer.coffee"
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},
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"author": "Private.coffee Team",
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"license": "MIT",
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"dependencies": {
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"bip39": "^3.1.0",
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"bittorrent-tracker": "^11.1.0",
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"ejs": "^3.1.10",
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"express": "^4.19.2",
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"multer": "^1.4.5-lts.1",
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"socket.io": "^4.7.5",
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"webtorrent": "^2.4.1"
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}
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}
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25
tracker.js
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tracker.js
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import { Server } from 'bittorrent-tracker';
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const PORT = process.env.TRACKER_PORT || 8106;
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const HOST = process.env.TRACKER_HOST || 'localhost';
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const server = new Server({
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udp: true,
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http: true,
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ws: true,
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stats: true,
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});
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server.on('error', (err) => {
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console.error(`Error: ${err.message}`);
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});
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server.on('warning', (err) => {
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console.warn(`Warning: ${err.message}`);
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});
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server.on('listening', () => {
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console.log(`Tracker is listening on http://{HOST}:{PORT}`);
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});
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server.listen(PORT);
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179
views/index.ejs
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179
views/index.ejs
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<!DOCTYPE html>
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<html>
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<head>
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<title>Transfer.coffee</title>
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<style>
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body {
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font-family: Arial, sans-serif;
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background-color: #f4f4f4;
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margin: 0;
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padding: 20px;
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}
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h1 {
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color: #333;
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}
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.container {
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max-width: 800px;
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margin: 0 auto;
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background: #fff;
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padding: 20px;
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box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
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}
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.section {
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margin-bottom: 20px;
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}
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input[type="file"],
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input[type="text"],
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input[type="url"] {
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width: calc(100% - 22px);
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padding: 10px;
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margin: 10px 0;
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border: 1px solid #ccc;
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border-radius: 4px;
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}
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button {
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padding: 10px 20px;
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background-color: #28a745;
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color: white;
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border: none;
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border-radius: 4px;
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cursor: pointer;
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}
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button:hover {
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background-color: #218838;
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}
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.progress {
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width: 100%;
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background-color: #f3f3f3;
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border-radius: 4px;
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margin: 10px 0;
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}
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.progress-bar {
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width: 0;
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height: 20px;
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background-color: #28a745;
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border-radius: 4px;
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text-align: center;
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color: white;
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line-height: 20px;
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}
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.result {
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margin: 10px 0;
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padding: 10px;
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background-color: #e9ecef;
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border-radius: 4px;
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}
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</style>
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<script src="/js/webtorrent.min.js"></script>
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</head>
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<body>
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<div class="container">
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<h1>Transfer.coffee</h1>
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<div class="section">
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<h2>Upload File</h2>
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<input type="file" id="fileInput" />
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<button onclick="uploadFile()">Upload</button>
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<div class="progress" id="uploadProgress">
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<div class="progress-bar" id="uploadProgressBar">0%</div>
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</div>
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<div class="result" id="uploadResult"></div>
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</div>
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<div class="section">
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<h2>Download File</h2>
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<input type="text" id="mnemonicInput" placeholder="Enter mnemonic" />
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<button onclick="downloadFile()">Download</button>
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<div class="progress" id="downloadProgress">
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<div class="progress-bar" id="downloadProgressBar">0%</div>
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</div>
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<div class="result" id="downloadResult"></div>
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</div>
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</div>
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<script>
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const client = new WebTorrent();
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const trackerUrl = "<%= trackerUrl %>";
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function uploadFile() {
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const fileInput = document.getElementById("fileInput");
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const file = fileInput.files[0];
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const uploadProgressBar = document.getElementById("uploadProgressBar");
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if (!file) {
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alert("Please select a file to upload.");
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return;
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}
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const opts = {
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announce: [trackerUrl],
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};
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client.seed(file, opts, (torrent) => {
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fetch(`/generate-mnemonic/${torrent.infoHash}`)
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.then((response) => response.json())
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.then((data) => {
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const uploadResult = document.getElementById("uploadResult");
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uploadResult.innerHTML = `File uploaded. Share this mnemonic: <strong>${data.mnemonic}</strong>`;
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});
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torrent.on("upload", () => {
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const progress = Math.round(
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(torrent.uploaded / torrent.length) * 100
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);
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uploadProgressBar.style.width = `${progress}%`;
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uploadProgressBar.textContent = `${progress}%`;
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});
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});
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}
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function downloadFile() {
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const mnemonicInput = document.getElementById("mnemonicInput").value;
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const downloadProgressBar = document.getElementById(
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"downloadProgressBar"
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);
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if (!mnemonicInput) {
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alert("Please enter a mnemonic.");
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return;
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}
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fetch(`/get-infohash/${mnemonicInput}`)
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.then((response) => response.json())
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.then((data) => {
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const torrentId = data.infoHash;
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const opts = {
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announce: [trackerUrl],
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};
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client.add(torrentId, opts, (torrent) => {
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torrent.files[0].getBlob((err, blob) => {
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if (err) {
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const downloadResult =
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document.getElementById("downloadResult");
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downloadResult.innerHTML = `Error: ${err.message}`;
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return;
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}
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const url = URL.createObjectURL(blob);
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const a = document.createElement("a");
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a.href = url;
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a.download = torrent.files[0].name;
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a.click();
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const downloadResult =
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document.getElementById("downloadResult");
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downloadResult.innerHTML = `File downloaded: <strong>${torrent.files[0].name}</strong>`;
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});
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torrent.on("download", () => {
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const progress = Math.round(
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(torrent.downloaded / torrent.length) * 100
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);
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downloadProgressBar.style.width = `${progress}%`;
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downloadProgressBar.textContent = `${progress}%`;
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});
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});
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});
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}
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</script>
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</body>
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</html>
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