settings site changes

get-refresh-token.js

@@ -1,20 +1,28 @@
 /**
  * One-time script to generate a Gmail OAuth2 refresh token.
- * Run once, copy the refresh token into .env, then delete this file.
  *
  * Usage:
  *   node get-refresh-token.js
  *
  * Prerequisites:
- *   - GOOGLE_CLIENT_ID and GOOGLE_CLIENT_SECRET set in .env (or exported in shell)
+ *   - GOOGLE_CLIENT_ID and GOOGLE_CLIENT_SECRET set in .env
  *   - In Google Cloud Console → OAuth 2.0 Client → Authorized redirect URIs:
  *     add http://localhost:3000/oauth2callback
+ *
+ * Flow:
+ *   1. Script prints an auth URL. Open it in any browser (same host or remote).
+ *   2a. Same-host browser: redirect to localhost:3000 is captured automatically.
+ *   2b. Remote browser (e.g. Windows, script running on Linux over SSH):
+ *       the browser fails to load localhost:3000/oauth2callback?code=... — copy
+ *       the full URL (or just the code= value) from the address bar and paste
+ *       it into the terminal prompt.
  */
 
 require('dotenv').config();
 const { google } = require('googleapis');
 const http = require('http');
 const url = require('url');
+const readline = require('readline');
 
 const CLIENT_ID = process.env.GOOGLE_CLIENT_ID;
 const CLIENT_SECRET = process.env.GOOGLE_CLIENT_SECRET;
@@ -41,29 +49,37 @@ console.log('\n=== Gmail OAuth2 Token Generator ===\n');
 console.log('1. Open this URL in your browser:\n');
 console.log(authUrl);
 console.log('\n2. Authorize the app with your support Gmail account.');
-console.log('3. You will be redirected to localhost — this script will capture the token.\n');
+console.log('\n3a. If the browser runs on this host, the redirect is captured automatically.');
+console.log('3b. If the browser is on a different machine, it will fail to load');
+console.log('    http://localhost:3000/oauth2callback?code=... — copy the full URL');
+console.log('    (or just the code= value) from the address bar and paste it below.\n');
 
-// Temporary local server to capture the callback
-const server = http.createServer(async (req, res) => {
-  const parsed = url.parse(req.url, true);
-  if (parsed.pathname !== '/oauth2callback') {
-    res.end('Not found');
-    return;
-  }
+let done = false;
 
-  const code = parsed.query.code;
-  if (!code) {
-    res.end('No code received.');
-    server.close();
-    return;
+function extractCode(input) {
+  const trimmed = (input || '').trim();
+  if (!trimmed) return null;
+  try {
+    // If the user pastes a full URL, pull the `code` query param.
+    // URL() treats localhost URLs fine; searchParams auto-decodes.
+    const parsed = new URL(trimmed);
+    return parsed.searchParams.get('code');
+  } catch {
+    // Not a URL — assume the user pasted the raw code.
+    return trimmed;
   }
+}
+
+async function finish(code, source, httpRespond) {
+  if (done) return;
+  done = true;
 
   try {
     const { tokens } = await oauth2Client.getToken(code);
-    res.end('<h2>Success! Check your terminal for the refresh token.</h2><p>You can close this tab.</p>');
-    server.close();
-
-    console.log('\n=== SUCCESS ===\n');
+    if (httpRespond) {
+      httpRespond('<h2>Success! Check your terminal for the refresh token.</h2><p>You can close this tab.</p>');
+    }
+    console.log(`\n=== SUCCESS (via ${source}) ===\n`);
     console.log('Add this to your .env:\n');
     console.log(`REFRESH_TOKEN=${tokens.refresh_token}`);
     if (!tokens.refresh_token) {
@@ -73,12 +89,51 @@ const server = http.createServer(async (req, res) => {
     console.log('\nAll tokens (for reference):');
     console.log(JSON.stringify(tokens, null, 2));
   } catch (err) {
-    res.end('Error exchanging code: ' + err.message);
-    server.close();
-    console.error('Error:', err);
+    if (httpRespond) httpRespond('Error exchanging code: ' + err.message);
+    console.error('\nError exchanging code:', err.response?.data || err.message);
+    process.exitCode = 1;
+  } finally {
+    try { server.close(); } catch {}
+    try { rl.close(); } catch {}
+  }
+}
+
+const server = http.createServer(async (req, res) => {
+  const parsed = url.parse(req.url, true);
+  if (parsed.pathname !== '/oauth2callback') {
+    res.end('Not found');
+    return;
+  }
+  const code = parsed.query.code;
+  if (!code) {
+    res.end('No code received.');
+    return;
+  }
+  await finish(code, 'browser redirect', (body) => res.end(body));
+});
+
+server.on('error', (err) => {
+  if (err.code === 'EADDRINUSE') {
+    console.log('Port 3000 is in use — auto-capture disabled. Use the paste prompt below.\n');
+  } else {
+    console.error('HTTP server error:', err.message);
   }
 });
 
 server.listen(3000, () => {
-  console.log('Waiting for OAuth callback on http://localhost:3000 ...\n');
+  console.log('Waiting for OAuth callback on http://localhost:3000 (or paste below) ...\n');
+});
+
+const rl = readline.createInterface({ input: process.stdin, output: process.stdout });
+rl.question('Paste redirect URL or code here: ', async (answer) => {
+  if (done) return;
+  const code = extractCode(answer);
+  if (!code) {
+    console.error('Could not parse a code from that input.');
+    process.exitCode = 1;
+    try { server.close(); } catch {}
+    rl.close();
+    return;
+  }
+  await finish(code, 'pasted input');
 });