Add error message for missing subnet

resources/scripts/app/Subnet.vue

@@ -15,7 +15,14 @@ const results = ref( {} );
 /**
  * Load subnet data based on input
  */
-const getSubnetData = async () => {
+const getSubnetData = async (): void => {
+    // Check if subnet is filled
+    if (subnet.value === '') {
+        errorMsg('Subnet is required');
+
+        return;
+    }
+
     try {
         // Enable loading state
         isLoading.value = true;
@@ -34,10 +41,7 @@ const getSubnetData = async () => {
     } catch (error) {
         // Extract and show error message
         const errorMessage = error.response?.data?.message || 'Something went wrong.';
-        $toast.error(errorMessage, {
+        errorMsg(errorMessage);
-            position: 'top',
-            duration: 1500,
-        });
     } finally {
         // Reset loading state
         isLoading.value = false;
@@ -47,12 +51,24 @@ const getSubnetData = async () => {
 /**
  * Reset form by resetting al vars
  */
-const resetForm = () => {
+const resetForm = (): void => {
     subnet.value = '';
     isLoading.value = false;
     hasResults.value = false;
     results.value = {};
 }
+
+/**
+ * Send error message
+ *
+ * @param message
+ */
+const errorMsg = (message: string): void => {
+    $toast.error(message, {
+        position: 'top',
+        duration: 1500,
+    });
+}
 </script>
 
 <template>