pl-fe: move stuff around

Signed-off-by: mkljczk <git@mkljczk.pl>

packages/pl-fe/src/queries/instance/use-translation-languages.ts

@@ -0,0 +1,40 @@
+import { useQuery } from '@tanstack/react-query';
+
+import { useClient } from 'pl-fe/hooks/use-client';
+import { useFeatures } from 'pl-fe/hooks/use-features';
+import { useInstance } from 'pl-fe/hooks/use-instance';
+import { useLoggedIn } from 'pl-fe/hooks/use-logged-in';
+
+const useTranslationLanguages = () => {
+  const client = useClient();
+  const { isLoggedIn } = useLoggedIn();
+  const features = useFeatures();
+  const instance = useInstance();
+
+  const getTranslationLanguages = async () => {
+    const metadata = instance.pleroma.metadata;
+
+    if (metadata.translation.source_languages?.length) {
+      return Object.fromEntries(metadata.translation.source_languages.map(source => [
+        source,
+        metadata.translation.target_languages!.filter(lang => lang !== source),
+      ]));
+    }
+
+    return client.instance.getInstanceTranslationLanguages();
+  };
+
+  const { data, ...result } = useQuery({
+    queryKey: ['translationLanguages'],
+    queryFn: getTranslationLanguages,
+    placeholderData: {},
+    enabled: isLoggedIn && features.translations,
+  });
+
+  return {
+    translationLanguages: data || {},
+    ...result,
+  };
+};
+
+export { useTranslationLanguages };