/** * Google OAuth Callback Server * Usage: CLIENT_ID=xxx CLIENT_SECRET=xxx REDIRECT_URI=xxx bun run oauth-server.ts */ const CLIENT_ID = process.env.CLIENT_ID!; const CLIENT_SECRET = process.env.CLIENT_SECRET!; const REDIRECT_URI = process.env.REDIRECT_URI!; const TOKEN_PATH = "/home/.z/google-oauth/token.json"; const SCOPES = [ "https://www.googleapis.com/auth/calendar", "https://www.googleapis.com/auth/calendar.events", "https://www.googleapis.com/auth/gmail.readonly", "https://www.googleapis.com/auth/gmail.send", "https://www.googleapis.com/auth/gmail.modify", "https://www.googleapis.com/auth/drive", "https://www.googleapis.com/auth/drive.file", "https://www.googleapis.com/auth/documents", "https://www.googleapis.com/auth/spreadsheets", "https://www.googleapis.com/auth/contacts", "https://www.googleapis.com/auth/contacts.readonly", ].join(" "); const port = parseInt(process.env.PORT || "8085"); function buildAuthUrl(): string { const params = new URLSearchParams({ client_id: CLIENT_ID, redirect_uri: REDIRECT_URI, response_type: "code", scope: SCOPES, access_type: "offline", prompt: "consent", }); return `https://accounts.google.com/o/oauth2/v2/auth?${params}`; } async function exchangeCode(code: string): Promise { const response = await fetch("https://oauth2.googleapis.com/token", { method: "POST", headers: { "Content-Type": "application/x-www-form-urlencoded" }, body: new URLSearchParams({ client_id: CLIENT_ID, client_secret: CLIENT_SECRET, code, grant_type: "authorization_code", redirect_uri: REDIRECT_URI, }), }); return response.json(); } Bun.serve({ port, async fetch(req) { const url = new URL(req.url); if (url.pathname === "/" || url.pathname === "") { const authUrl = buildAuthUrl(); return new Response(` Google OAuth Setup

🔐 Connect Google

Click below to authorize access to your Google Calendar, Gmail, Drive, Docs, Sheets, and Contacts.

`, { headers: { "Content-Type": "text/html; charset=utf-8" } }); } if (url.pathname === "/callback") { const code = url.searchParams.get("code"); const error = url.searchParams.get("error"); if (error) { return new Response(`

Error: ${error}

`, { headers: { "Content-Type": "text/html" } }); } if (code) { const tokenData = await exchangeCode(code); if (tokenData.error) { return new Response(`

Error: ${tokenData.error}

${tokenData.error_description}

`, { headers: { "Content-Type": "text/html" } }); } const toSave = { ...tokenData, client_id: CLIENT_ID, client_secret: CLIENT_SECRET, obtained_at: new Date().toISOString(), }; await Bun.write(TOKEN_PATH, JSON.stringify(toSave, null, 2)); return new Response(` Connected!

✅ Connected!

Zo now has access to your Google Calendar, Gmail, Drive, Docs, Sheets, and Contacts.

You can close this tab.

`, { headers: { "Content-Type": "text/html; charset=utf-8" } }); } } return new Response("Not found", { status: 404 }); }, }); console.log(`OAuth server running on port ${port}`); console.log(`Redirect URI: ${REDIRECT_URI}`);