feat(dropbox): support connections

packages/backend/src/apps/dropbox/auth/refresh-token.ts

@@ -0,0 +1,38 @@
+import { Buffer } from 'node:buffer';
+import { IGlobalVariable } from '@automatisch/types';
+
+const refreshToken = async ($: IGlobalVariable) => {
+  const params = {
+    grant_type: 'refresh_token',
+    refresh_token: $.auth.data.refreshToken as string,
+  };
+
+  const basicAuthToken = Buffer
+    .from(`${$.auth.data.clientId}:${$.auth.data.clientSecret}`)
+    .toString('base64');
+
+  const { data } = await $.http.post(
+    'oauth2/token',
+    null,
+    {
+      params,
+      headers: {
+        Authorization: `Basic ${basicAuthToken}`
+      }
+    }
+  );
+
+  const {
+    access_token: accessToken,
+    expires_in: expiresIn,
+    token_type: tokenType,
+  } = data;
+
+  await $.auth.set({
+    accessToken,
+    expiresIn,
+    tokenType,
+  });
+};
+
+export default refreshToken;