Apply suggestions from code review

Co-authored-by: shamoon <4887959+shamoon@users.noreply.github.com>

docs/widgets/services/truenas.md

@@ -11,7 +11,7 @@ To create an API Key, follow [the official TrueNAS documentation](https://www.tr
 
 A detailed pool listing is disabled by default, but can be enabled with the `enablePools` option.
 
-TrueNAS Scale and Core APIs differ, the optional `nasType` parameter is needed if using the `enablePools` option.
+To use the `enablePools` option with TrueNAS Core, the `nasType` parameter is required.
 
 ```yaml
 widget:
@@ -21,5 +21,5 @@ widget:
   password: pass # not required if using api key
   key: yourtruenasapikey # not required if using username / password
   enablePools: true # optional, defaults to false
-  nasType: scale # defaults to scale, values are core or scale
+  nasType: scale # defaults to scale, must be set to 'core' if using enablePools with TrueNAS Core
 ```

src/utils/config/service-helpers.js

@@ -521,7 +521,7 @@ export function cleanServiceGroups(groups) {
         }
         if (type === "truenas") {
           if (enablePools !== undefined) cleanedService.widget.enablePools = JSON.parse(enablePools);
-          cleanedService.widget.nasType = nasType ?? "scale";
+          if (nasType !== undefined) cleanedService.widget.nasType = nasType;
         }
         if (["diskstation", "qnap"].includes(type)) {
           if (volume) cleanedService.widget.volume = volume;

src/widgets/truenas/component.jsx

@@ -44,10 +44,10 @@ export default function Component({ service }) {
             key={pool.id}
             name={pool.name}
             healthy={pool.healthy}
-            scaleAllocated={pool.allocated}
-            scaleFree={pool.free}
+            allocated={pool.allocated}
+            free={pool.free}
             data={pool.data}
-            nasType={widget?.nasType}
+            nasType={widget?.nasType ?? "scale"}
           />
         ))}
     </>

src/widgets/truenas/pool.jsx

@@ -1,16 +1,15 @@
 import classNames from "classnames";
 import prettyBytes from "pretty-bytes";
 
-export default function Pool({ name, scaleFree, scaleAllocated, healthy, data, nasType }) {
+export default function Pool({ name, free, allocated, healthy, data, nasType }) {
   let total = 0;
-  let allocated = 0;
   if (nasType === "scale") {
-    total = scaleFree + scaleAllocated;
-    allocated = scaleAllocated;
+    total = free + allocated;
   } else {
+    allocated = 0;  // eslint-disable-line no-param-reassign
     for (let i = 0; i < data.length; i += 1) {
       total += data[i].stats.size;
-      allocated += data[i].stats.allocated;
+      allocated += data[i].stats.allocated;  // eslint-disable-line no-param-reassign
     }
   }