feat: get access token & refresh tokens for server type SASJS

src/auth/refreshTokensForSasjs.ts

@@ -0,0 +1,35 @@
+import { prefixMessage } from '@sasjs/utils/error'
+import { RequestClient } from '../request/RequestClient'
+
+/**
+ * Exchanges the refresh token for an access token for the given client.
+ * @param requestClient - the pre-configured HTTP request client
+ * @param refreshToken - the refresh token received from the server.
+ */
+export async function refreshTokensForSasjs(
+  requestClient: RequestClient,
+  refreshToken: string
+) {
+  const url = '/SASjsApi/auth/refresh'
+  const headers = {
+    Authorization: 'Bearer ' + refreshToken
+  }
+
+  const authResponse = await requestClient
+    .post(url, undefined, undefined, undefined, headers)
+    .then((res) => {
+      const sasAuth = res.result as {
+        accessToken: string
+        refreshToken: string
+      }
+      return {
+        access_token: sasAuth.accessToken,
+        refresh_token: sasAuth.refreshToken
+      }
+    })
+    .catch((err) => {
+      throw prefixMessage(err, 'Error while refreshing tokens')
+    })
+
+  return authResponse
+}