feat(google-calendar): add google calendar integration

packages/backend/src/apps/google-calendar/auth/refresh-token.ts

@@ -0,0 +1,26 @@
+import { URLSearchParams } from 'node:url';
+import { IGlobalVariable } from '@automatisch/types';
+import authScope from '../common/auth-scope';
+
+const refreshToken = async ($: IGlobalVariable) => {
+  const params = new URLSearchParams({
+    client_id: $.auth.data.clientId as string,
+    client_secret: $.auth.data.clientSecret as string,
+    grant_type: 'refresh_token',
+    refresh_token: $.auth.data.refreshToken as string,
+  });
+
+  const { data } = await $.http.post(
+    'https://oauth2.googleapis.com/token',
+    params.toString()
+  );
+
+  await $.auth.set({
+    accessToken: data.access_token,
+    expiresIn: data.expires_in,
+    scope: authScope.join(' '),
+    tokenType: data.token_type,
+  });
+};
+
+export default refreshToken;