feathernote/src/server.js at alpine · royalgarter/feathernote · GitHub

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require('dotenv').config();

const express = require('express');

const path = require('path');

const fs = require('fs');

const crypto = require('crypto');

const { TextEncoder } = require('util');

const multer = require('multer');

const { marked } = require('marked');

const openKv = (process.env.PUBLISH_USE_DENOKV === 'true') ? require('@deno/kv').openKv : null;

// --- YAML Fallback for Server ---

const YAML = {

stringify: (obj) => JSON.stringify(obj, null, 2),

parse: (str) => JSON.parse(str)

};

// console.log('CLOUDFLARE_ACCOUNT_ID=' + Deno.env.get('CLOUDFLARE_ACCOUNT_ID'))

// console.log('CLOUDFLARE_API_TOKEN=' + Deno.env.get('CLOUDFLARE_API_TOKEN'))

// console.log('CLOUDFLARE_KV_NAMESPACE_ID=' + Deno.env.get('CLOUDFLARE_KV_NAMESPACE_ID'))

// console.log('GOOGLE_CLIENT_ID=' + Deno.env.get('GOOGLE_CLIENT_ID'))

// console.log('NEXT_PUBLIC_GOOGLE_CLIENT_ID=' + Deno.env.get('NEXT_PUBLIC_GOOGLE_CLIENT_ID'))

// console.log('NODE_ENV=' + Deno.env.get('NODE_ENV'))

// console.log('PUBLISH_DENO_KV_ACCESS_TOKEN=' + Deno.env.get('PUBLISH_DENO_KV_ACCESS_TOKEN'))

// console.log('PUBLISH_DENO_KV_URL=' + Deno.env.get('PUBLISH_DENO_KV_URL'))

// console.log('PUBLISH_USE_CLOUDFLAREKV=' + Deno.env.get('PUBLISH_USE_CLOUDFLAREKV'))

const CFKV = {

HOST: (k) => `https://api.cloudflare.com/client/v4/accounts/${process.env.CLOUDFLARE_ACCOUNT_ID}/storage/kv/namespaces/${process.env.CLOUDFLARE_KV_NAMESPACE_ID}/values/${k}`,

HEADERS: {

'Authorization': `Bearer ${process.env.CLOUDFLARE_API_TOKEN}`

put: async (k, v, e) => {

const form = new FormData();

form.append('value', v);

return fetch(CFKV.HOST(k) + `?expiration_ttl=${e || ''}`, {

method: 'PUT',

headers: CFKV.HEADERS,

body: form

}).then(r => r.json()).catch();

get: async (k) => {

return fetch(CFKV.HOST(k), {

method: 'GET',

headers: CFKV.HEADERS,

}).then(r => r.text()).catch();

del: async (k) => {

return fetch(CFKV.HOST(k), {

method: 'DELETE',

headers: CFKV.HEADERS,

}).then(r => r.json()).catch();

}

const getAppVersion = async () => {

try {

const hash = crypto.createHash('sha1');

const keyFiles = fs.readdirSync(__dirname).filter(x => x.includes('.js') || x.includes('.htm') || x.includes('.cs'));

for (const fileName of keyFiles) {

const filePath = path.join(__dirname, fileName);

const content = await fs.promises.readFile(filePath);

hash.update(content);

}

return hash.digest('hex').slice(0, 7);

} catch (error) {

console.error('Failed to generate version hash:', error);

return 'unknown';

}

};

const app = express();

const port = process.env.PORT || 7347;

const upload = multer();

const DENO_KV_SIZE_LIMIT = 65536;

const generateHtmlPage = (title, bodyContent) => {

return `

<!DOCTYPE html>

<head>

<title>${title} on FeatherNote</title>

<style>

main.container { max-width: 100%; padding: 0; }

article { margin: 1%; white-space: pre-wrap; word-break: break-word; }

article img { max-width: 100%; }

</style>

</head>

<body>

${bodyContent}

</article>

</main>

</body>

</html>

};

// Create a directory for published notes if it doesn't exist

const publishedNotesDir = path.join(__dirname, 'published_notes');

if (!fs.existsSync(publishedNotesDir)) fs.mkdirSync(publishedNotesDir);

try {

const filePath = path.join(publishedNotesDir, `uptime.json`);

fs.writeFileSync(filePath, JSON.stringify({date: new Date()}));

} catch (ex) {console.log(ex)}

app.use(express.json()); // Middleware to parse JSON request bodies

// --- Firebase Admin SDK Init ---

const admin = require('firebase-admin');

let isFirebaseInitialized = false;

try {

if (process.env.FIREBASE_SERVICE_ACCOUNT) {

const serviceAccount = JSON.parse(process.env.FIREBASE_SERVICE_ACCOUNT);

admin.initializeApp({ credential: admin.credential.cert(serviceAccount) });

isFirebaseInitialized = true;

console.log('Firebase Admin initialized via env var.');

} else if (process.env.GOOGLE_APPLICATION_CREDENTIALS) {

admin.initializeApp();

isFirebaseInitialized = true;

console.log('Firebase Admin initialized via GOOGLE_APPLICATION_CREDENTIALS.');

}

} catch (e) {

console.warn('Firebase Admin init failed:', e.message);

}

// --- Scheduled Tasks Management (CFKV Persistence) ---

let scheduledTasks = {};

const loadScheduledTasks = async () => {

try {

if (!process.env.CLOUDFLARE_ACCOUNT_ID) return;

const data = await CFKV.get('scheduled_tasks');

if (data) {

try {

const tasks = JSON.parse(data);

Object.values(tasks).forEach(task => scheduleTaskExecution(task));

console.log(`Loaded ${Object.keys(tasks).length} scheduled tasks from CFKV.`);

} catch (e) {

console.warn('No valid scheduled tasks found in CFKV or parse error.');

}

} catch (e) {

console.error('Failed to load scheduled tasks from CFKV:', e);

}

};

const saveScheduledTasks = async () => {

try {

if (!process.env.CLOUDFLARE_ACCOUNT_ID) return;

const serializable = {};

for (const [id, task] of Object.entries(scheduledTasks)) {

const { timeoutId, ...rest } = task;

serializable[id] = rest;

}

await CFKV.put('scheduled_tasks', JSON.stringify(serializable));

} catch (e) {

console.error('Failed to save scheduled tasks to CFKV:', e);

}

};

const executeTask = async (task) => {

const { id, token, title, body, url } = task;

if (scheduledTasks[id]) {

clearTimeout(scheduledTasks[id].timeoutId);

delete scheduledTasks[id];

await saveScheduledTasks();

}

if (!isFirebaseInitialized) {

console.warn(`Cannot send task ${id}: Firebase not initialized.`);

return;

}

try {

await admin.messaging().send({

token: token,

notification: { title, body },

data: { url: url || '/' },

webpush: {

fcm_options: { link: url || '/' },

headers: { Urgency: 'high' }

}

});

console.log(`Notification sent for task ${id}: "${title}"`);

} catch (e) {

console.error(`Failed to send notification for task ${id}:`, e);

}

};

const scheduleTaskExecution = (task) => {

const now = Date.now();

const scheduledTime = new Date(task.scheduledTime).getTime();

const delay = Math.max(0, scheduledTime - now);

const id = task.id || crypto.randomBytes(8).toString('hex');

const timeoutId = setTimeout(() => executeTask({ ...task, id }), delay);

scheduledTasks[id] = { ...task, id, timeoutId };

};

app.post('/api/schedule-notification', async (req, res) => {

const { token, noteId, title, body, scheduledTime, url } = req.body;

if (!token || !scheduledTime) {

return res.status(400).json({ error: 'Missing token or scheduledTime' });

}

const task = { id: noteId, token, title, body, scheduledTime, url };

scheduleTaskExecution(task);

await saveScheduledTasks();

res.json({ success: true });

});

app.get('/api/proxy', async (req, res) => {

const urlToFetch = decodeURIComponent(req.query.url);

if (!urlToFetch) {

return res.status(400).json({ error: 'URL parameter is required.' });

}

try {

// Use the built-in fetch in modern Node.js

const response = await fetch(urlToFetch, {

headers: { 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36' } // Set a user-agent

});

if (!response.ok) {

// Forward the status and statusText from the target server

return res.status(response.status).send(response.statusText);

}

const html = await response.text();

res.setHeader('X-Final-Url', response.url);

res.send(html);

} catch (error) {

console.error(`Proxy error for ${urlToFetch}:`, error);

res.status(500).json({ error: 'Failed to fetch the URL through proxy.' });

}

});

// --- Share/Publish Endpoints ---

const PUBLISHED = {};

app.post('/api/publish', async (req, res) => {

const { title, content, isEncrypted } = req.body;

if (!content) {

return res.status(400).json({ error: 'Content cannot be empty.' });

}

const noteId = crypto.randomBytes(8).toString('hex');

const noteData = { title: title || 'Untitled Note', content, isEncrypted: !!isEncrypted };

const noteString = YAML.stringify(noteData);

const noteSize = new TextEncoder().encode(noteString).length;

try {

if (process.env.PUBLISH_USE_CLOUDFLAREKV === 'true') {

const { CLOUDFLARE_KV_NAMESPACE_ID, CLOUDFLARE_API_TOKEN, CLOUDFLARE_ACCOUNT_ID } = process.env;

if (!CLOUDFLARE_KV_NAMESPACE_ID || !CLOUDFLARE_API_TOKEN || !CLOUDFLARE_ACCOUNT_ID) {

throw new Error('Cloudflare KV environment variables are not set.');

}

await CFKV.put(noteId, noteString);

} else if (process.env.PUBLISH_USE_DENOKV === 'true' && noteSize <= DENO_KV_SIZE_LIMIT) {

if (!process.env.PUBLISH_DENO_KV_URL || !process.env.PUBLISH_DENO_KV_ACCESS_TOKEN) {

throw new Error('Deno KV environment variables are not set.');

}

const kv = await openKv(process.env.PUBLISH_DENO_KV_URL, { accessToken: process.env.PUBLISH_DENO_KV_ACCESS_TOKEN });

await kv.set(['published_notes', noteId], noteData);

} else {

// Fallback to filesystem for large notes or if Deno KV is not configured

const filePath = path.join(publishedNotesDir, `${noteId}.json`);

if (!fs.existsSync(publishedNotesDir)) fs.mkdirSync(publishedNotesDir);

fs.writeFile(filePath, noteString, error => {

console.log(error);

PUBLISHED[noteId] = noteData;

});

}

res.json({ url: `/publish/${noteId}` });

} catch (err) {

console.error('Failed to save note:', err);

res.status(500).json({ error: 'Failed to save note.' });

}

});

app.get('/publish/:noteId', async (req, res) => {

const { noteId } = req.params;

try {

let note = null;

if (process.env.PUBLISH_USE_CLOUDFLAREKV === 'true') {

const { CLOUDFLARE_KV_NAMESPACE_ID, CLOUDFLARE_API_TOKEN, CLOUDFLARE_ACCOUNT_ID } = process.env;

if (!CLOUDFLARE_KV_NAMESPACE_ID || !CLOUDFLARE_API_TOKEN || !CLOUDFLARE_ACCOUNT_ID) {

throw new Error('Cloudflare KV environment variables are not set.');

}

const value = await CFKV.get(noteId);

if (value) {

note = YAML.parse(value);

}

// First, try to fetch from Deno KV if it's enabled

if (!note && process.env.PUBLISH_USE_DENOKV === 'true') {

if (!process.env.PUBLISH_DENO_KV_URL || !process.env.PUBLISH_DENO_KV_ACCESS_TOKEN) {

throw new Error('Deno KV environment variables are not set.');

}

const kv = await openKv(process.env.PUBLISH_DENO_KV_URL, { accessToken: process.env.PUBLISH_DENO_KV_ACCESS_TOKEN });

const result = await kv.get(['published_notes', noteId]);

if (result.value) {

note = result.value;

}

// If not found in Deno KV, or if Deno KV is not enabled, try the filesystem

if (!note) {

const filePath = path.join(publishedNotesDir, `${noteId}.json`);

if (fs.existsSync(filePath)) {

const data = fs.readFileSync(filePath, 'utf8');

note = YAML.parse(data);

} else {

note = PUBLISHED[noteId];

}

// If note is still not found, return 404

if (!note) {

return res.status(404).send('Note not found.');

}

if (note.isEncrypted) {

try {

const templatePath = path.join(__dirname, 'self-decrypting.html');

const template = fs.readFileSync(templatePath, 'utf8');

const selfDecryptingHtml = template

.replaceAll('{{TITLE}}', note.title)

.replace('{{ENCRYPTED_PAYLOAD}}', note.content);

return res.send(selfDecryptingHtml);

} catch (e) {

console.error('Failed to load self-decrypting template:', e);

return res.status(500).send('Internal server error loading encrypted template.');

}

const htmlContent = marked.parse(note.content);

res.send(generateHtmlPage(note.title, `<h1>${note.title}</h1>\n${htmlContent}`));

} catch (err) {

console.error('Failed to retrieve note:', err);

res.status(500).send('Failed to retrieve note.');

}

});

app.get('/about', (req, res) => {

const readmePath = path.join(__dirname, '..', 'README.md');

fs.readFile(readmePath, 'utf8', (err, markdown) => {

if (err) {

console.error('Failed to read README.md:', err);

return res.status(500).send('Could not load about page.');

}

const htmlContent = marked.parse(markdown);

res.set('Cache-Control', 'public, max-age=604800'); // 1 week

res.send(generateHtmlPage('About FeatherNote', htmlContent));

});

// Route for the main application page

app.get('/', (req, res) => HTML_INDEX ? res.send(HTML_INDEX) : res.sendFile(path.join(__dirname, 'index.html')) );

// Serve static files from the 'src' directory

app.use(express.static(path.join(__dirname), { maxAge: '7d' }));

// Handle shared content from PWA

app.post('/share', upload.none(), (req, res) => {

// The service worker will handle this, but we have a server-side route as a fallback.

console.log('Shared content received on server (POST):', req.body);

const { title, url, text } = req.body;

const redirectUrl = `/?title=${encodeURIComponent(title || '')}&url=${encodeURIComponent(url || '')}&text=${encodeURIComponent(text || '')}`;

res.redirect(redirectUrl);

});

app.get('/share', (req, res) => {

console.log('Shared content received on server (GET):', req.query);

const { title, url, text } = req.query;

const redirectUrl = `/?title=${encodeURIComponent(title || '')}&url=${encodeURIComponent(url || '')}&text=${encodeURIComponent(text || '')}`;

res.redirect(redirectUrl);

});

app.get('/api/version', (req, res) => {

res.json({ version: appVersion || 'unknown' });

});

let appVersion;

let HTML_INDEX = fs.readFileSync(path.join(__dirname, 'index.html'), {encoding: 'utf8'});

(async () => {

appVersion = await getAppVersion();

await loadScheduledTasks();

if (process.argv[2] === '--version') {

console.log(appVersion);

process.exit(0);

}

const readmePath = path.join(__dirname, '..', 'README.md');

const readmeMarkdown = fs.readFileSync(readmePath, 'utf8');

const introMarkdown = readmeMarkdown.split('## Philosophy')[0];

const welcomeHtml = marked.parse(introMarkdown);

HTML_INDEX = (HTML_INDEX || '')

.replaceAll?.('___VERSION___', appVersion)

.replaceAll?.('___GOOGLE_CLIENT_ID___', process.env.GOOGLE_CLIENT_ID)

.replace('', welcomeHtml);

app.listen(port, () => {

console.log(`Server openned: http://localhost:${port}`);

console.log()

console.log(`Versioning url: http://localhost:${port}/?v=${appVersion}`);

});

})();

feathernote/src/server.js at alpine · royalgarter/feathernote · GitHub

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