Swagger fixes

src/main/java/it/aboutbits/springboot/toolbox/swagger/customization/alphabetical_model_order/OrderModelsCustomizer.java

@@ -10,6 +10,8 @@ public class OrderModelsCustomizer implements OpenApiCustomizer {
     public void customise(OpenAPI openApi) {
         var components = openApi.getComponents();
 
-        components.schemas(new TreeMap<>(components.getSchemas()));
+        if (components != null && components.getSchemas() != null) {
+            components.schemas(new TreeMap<>(components.getSchemas()));
+        }
     }
 }

src/main/java/it/aboutbits/springboot/toolbox/swagger/customization/default_not_null/NullableCustomizer.java

@@ -10,6 +10,9 @@ public class NullableCustomizer implements OpenApiCustomizer {
     @Override
     @SuppressWarnings("unchecked")
     public void customise(OpenAPI openApi) {
+        if (openApi.getComponents() == null || openApi.getComponents().getSchemas() == null) {
+            return;
+        }
         openApi.getComponents().getSchemas().values()
                 .forEach(schema -> {
                     var requiredProperties = new ArrayList<String>();

src/main/java/it/aboutbits/springboot/toolbox/swagger/customization/logout_route/LogoutCustomizer.java

@@ -4,18 +4,23 @@
 import io.swagger.v3.oas.models.Operation;
 import io.swagger.v3.oas.models.PathItem;
 import io.swagger.v3.oas.models.responses.ApiResponses;
+import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
 import org.springdoc.core.customizers.OpenApiCustomizer;
 
 @RequiredArgsConstructor
 public class LogoutCustomizer implements OpenApiCustomizer {
+    @NonNull
     private final String logoutUrl;
+    @NonNull
+    private final String tag;
 
     @Override
     public void customise(OpenAPI openApi) {
         var operation = new Operation();
-        operation.addTagsItem("Authentication API");
+        operation.addTagsItem(tag);
         operation.summary("Logout the current user");
+        operation.operationId("logout");
         operation.responses(new ApiResponses());
 
         var pathItem = new PathItem();

src/main/java/it/aboutbits/springboot/toolbox/swagger/type/CustomTypePropertyCustomizer.java

@@ -20,6 +20,17 @@ public class CustomTypePropertyCustomizer implements PropertyCustomizer {
     public Schema<?> customize(Schema property, AnnotatedType annotatedType) {
         var type = annotatedType.getType();
 
+        if (type instanceof SimpleType simpleType) {
+            var rawClass = simpleType.getRawClass();
+
+            // We set the enum name as the description because swagger treats each usage as a new enum.
+            // This way we can preserve the information about the original enum type.
+            if (rawClass.isEnum()) {
+                var displayName = rawClass.getCanonicalName().replace(rawClass.getPackage().getName() + ".", "");
+                property.setDescription(displayName);
+            }
+        }
+
         if (type instanceof SimpleType simpleType && CustomType.class.isAssignableFrom(simpleType.getRawClass())) {
             var rawClass = simpleType.getRawClass();