feat(airtable): add airtable integration

packages/backend/src/apps/airtable/auth/refresh-token.js

@@ -0,0 +1,40 @@
+import { URLSearchParams } from 'node:url';
+
+import authScope from '../common/auth-scope.js';
+
+const refreshToken = async ($) => {
+  const params = new URLSearchParams({
+    client_id: $.auth.data.clientId,
+    grant_type: 'refresh_token',
+    refresh_token: $.auth.data.refreshToken,
+  });
+
+  const basicAuthToken = Buffer.from(
+    $.auth.data.clientId + ':' + $.auth.data.clientSecret
+  ).toString('base64');
+
+  const { data } = await $.http.post(
+    'https://airtable.com/oauth2/v1/token',
+    params.toString(),
+    {
+      headers: {
+        'Content-Type': 'application/x-www-form-urlencoded',
+        Authorization: `Basic ${basicAuthToken}`,
+      },
+      additionalProperties: {
+        skipAddingAuthHeader: true,
+      },
+    }
+  );
+
+  await $.auth.set({
+    accessToken: data.access_token,
+    refreshToken: data.refresh_token,
+    expiresIn: data.expires_in,
+    refreshExpiresIn: data.refresh_expires_in,
+    scope: authScope.join(' '),
+    tokenType: data.token_type,
+  });
+};
+
+export default refreshToken;