From dc9650b80bb3f1ff029eebbe3316cc7440d1f3b9 Mon Sep 17 00:00:00 2001
From: Oliwia Rogala <oliwia.rogala@smartbear.com>
Date: Thu, 18 Apr 2024 14:35:50 +0200
Subject: [PATCH] fix(config): address getting configUrl from options (#9840)

Refs #9819
---
 src/core/config/defaults.js           | 1 +
 src/core/config/sources/query.js      | 5 ++++-
 src/core/config/type-cast/mappings.js | 2 +-
 src/core/index.js                     | 3 +--
 4 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/core/config/defaults.js b/src/core/config/defaults.js
index 19c2a0a080b..ef2daf7db41 100644
--- a/src/core/config/defaults.js
+++ b/src/core/config/defaults.js
@@ -9,6 +9,7 @@ const defaultOptions = Object.freeze({
   spec: {},
   url: "",
   urls: null,
+  configUrl: null,
   layout: "BaseLayout",
   docExpansion: "list",
   maxDisplayedTags: -1,
diff --git a/src/core/config/sources/query.js b/src/core/config/sources/query.js
index 805c745c194..6ed14ba3d69 100644
--- a/src/core/config/sources/query.js
+++ b/src/core/config/sources/query.js
@@ -13,7 +13,10 @@ const optionsFromQuery = () => (options) => {
   const urlSearchParams = options.queryConfigEnabled ? parseSearch() : {}
 
   return Object.entries(urlSearchParams).reduce((acc, [key, value]) => {
-    if (key === "urls.primaryName") {
+    // TODO(oliwia.rogala@smartbear.com): drop support for `config` in the next major release
+    if (key === "config") {
+      acc["configUrl"] = value
+    } else if (key === "urls.primaryName") {
       acc[key] = value
     } else {
       acc = set(acc, key, value)
diff --git a/src/core/config/type-cast/mappings.js b/src/core/config/type-cast/mappings.js
index 30ef5e3dfd5..8ece1d2f994 100644
--- a/src/core/config/type-cast/mappings.js
+++ b/src/core/config/type-cast/mappings.js
@@ -15,7 +15,7 @@ import undefinedStringTypeCaster from "./type-casters/undefined-string"
 import defaultOptions from "../defaults"
 
 const typeCasters = {
-  configUrl: { typeCaster: stringTypeCaster },
+  configUrl: { typeCaster: nullableStringTypeCaster },
   deepLinking: {
     typeCaster: booleanTypeCaster,
     defaultValue: defaultOptions.deepLinking,
diff --git a/src/core/index.js b/src/core/index.js
index a46ec629799..1cc4ac493f1 100644
--- a/src/core/index.js
+++ b/src/core/index.js
@@ -51,10 +51,9 @@ export default function SwaggerUI(userOptions) {
   store.register([mergedOptions.plugins, InlinePlugin])
   const system = store.getSystem()
 
-  const configURL = queryOptions.config ?? mergedOptions.configUrl
   const systemOptions = optionsFromSystem({ system })(mergedOptions)
 
-  optionsFromURL({ url: configURL, system })(mergedOptions)
+  optionsFromURL({ url: mergedOptions.configUrl, system })(mergedOptions)
     .then((urlOptions) => {
       const urlOptionsFailedToFetch = urlOptions === null