// This approach uses Google OAuth to authenticate the user and fetch their actual calendar events for the week. // It requires setting up OAuth credentials in the Google Cloud Console and configuring environment variables in Val Town. import { encode as encodeBase64 } from "https://deno.land/std@0.190.0/encoding/base64.ts"; const CLIENT_ID = Deno.env.get("GOOGLE_CLIENT_ID"); const CLIENT_SECRET = Deno.env.get("GOOGLE_CLIENT_SECRET"); const REDIRECT_URI = Deno.env.get("REDIRECT_URI"); // Should be set to your Val Town endpoint URL + "/callback" const SCOPES = ["https://www.googleapis.com/auth/calendar.readonly"]; export default async function server(request: Request): Promise { const url = new URL(request.url); const path = url.pathname; if (path === "/") { // Initiate OAuth flow const authUrl = `https://accounts.google.com/o/oauth2/v2/auth?` + `client_id=${CLIENT_ID}` + `&redirect_uri=${encodeURIComponent(REDIRECT_URI)}` + `&response_type=code` + `&scope=${encodeURIComponent(SCOPES.join(" "))}` + `&access_type=offline`; return new Response(` Google Calendar OAuth

Google Calendar OAuth

Click the button below to authorize access to your Google Calendar:

View source

`, { headers: { "Content-Type": "text/html" }, }); } else if (path === "/callback") { // Handle OAuth callback const code = url.searchParams.get("code"); if (!code) { return new Response("No code provided", { status: 400 }); } // Exchange code for tokens const tokenResponse = await fetch("https://oauth2.googleapis.com/token", { method: "POST", headers: { "Content-Type": "application/x-www-form-urlencoded", Authorization: `Basic ${encodeBase64(`${CLIENT_ID}:${CLIENT_SECRET}`)}`, }, body: new URLSearchParams({ code, client_id: CLIENT_ID, client_secret: CLIENT_SECRET, redirect_uri: REDIRECT_URI, grant_type: "authorization_code", }), }); const tokens = await tokenResponse.json(); // Fetch calendar events for this week const now = new Date(); const oneWeekLater = new Date(now.getTime() + 7 * 24 * 60 * 60 * 1000); const calendarResponse = await fetch( `https://www.googleapis.com/calendar/v3/calendars/primary/events?` + `timeMin=${now.toISOString()}` + `&timeMax=${oneWeekLater.toISOString()}` + `&singleEvents=true` + `&orderBy=startTime`, { headers: { Authorization: `Bearer ${tokens.access_token}`, }, } ); const calendarData = await calendarResponse.json(); return new Response(JSON.stringify(calendarData, null, 2), { headers: { "Content-Type": "application/json" }, }); } else { return new Response("Not found", { status: 404 }); } }

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