refactor(oas31): change License component to be smart (#8476)

Refs #8474

src/core/plugins/oas31/selectors.js

@@ -0,0 +1,37 @@
+/**
+ * @prettier
+ */
+import { createSelector } from "reselect"
+
+import { safeBuildUrl } from "core/utils/url"
+
+export const selectLicenseNameField = () => (system) => {
+  return system.specSelectors.license().get("name", "License")
+}
+
+export const selectLicenseUrlField = () => (system) => {
+  return system.specSelectors.license().get("url")
+}
+
+export const selectLicenseIdentifierField = () => (system) => {
+  return system.specSelectors.license().get("identifier")
+}
+
+export const makeSelectLicenseUrl = (system) =>
+  createSelector(
+    () => system.specSelectors.url(),
+    () => system.oas3Selectors.selectedServer(),
+    () => system.oas31Selectors.selectLicenseUrlField(),
+    () => system.oas31Selectors.selectLicenseIdentifierField(),
+    (specUrl, selectedServer, url, identifier) => {
+      if (url) {
+        return safeBuildUrl(url, specUrl, { selectedServer })
+      }
+
+      if (identifier) {
+        return `https://spdx.org/licenses/${identifier}.html`
+      }
+
+      return undefined
+    }
+  )