Set best Wi-Fi HT mode depending on the checked frequency

src/common/WiFiSettings/WiFiForm.js

@@ -64,6 +64,7 @@ DeviceForm.propTypes = {
         channel: PropTypes.string.isRequired,
         guest_wifi: PropTypes.object.isRequired,
         encryption: PropTypes.string.isRequired,
+        available_bands: PropTypes.array.isRequired,
     }),
     formErrors: PropTypes.object.isRequired,
     setFormValue: PropTypes.func.isRequired,
@@ -87,6 +88,7 @@ function DeviceForm({
     ...props
 }) {
     const deviceID = formData.id;
+    const bnds = formData.available_bands;
     return (
         <>
             <Switch
@@ -159,18 +161,24 @@ function DeviceForm({
                         value={formData.hwmode}
                         helpText={HELP_TEXTS.hwmode}
                         inline
-                        onChange={setFormValue((value) => ({
+                        onChange={setFormValue((value) => {
+                            // Get the last item in an array of available HT modes
+                            const [best2] = bnds[0].available_htmodes.slice(-1);
+                            const [best5] = bnds[1].available_htmodes.slice(-1);
+                            return {
                                 devices: {
                                     [deviceIndex]: {
                                         hwmode: { $set: value },
                                         channel: { $set: "0" },
                                         htmode: {
                                             $set:
-                                            value === "11a" ? "VHT80" : "HT20",
+                                                // Set HT mode depending on checked frequency
+                                                value === "11a" ? best5 : best2,
                                         },
                                     },
                                 },
-                        }))}
+                            };
+                        })}
                         {...props}
                     />