fix: handling of "additionalProperties: true" (#77)

Signed-off-by: roee88 <roee88@gmail.com>

Author: roee88

example/crds/example.yaml

@@ -18,6 +18,11 @@ spec:
     schema:
       openAPIV3Schema:
         properties:
+          arbitrary:
+            description: arbitrary field
+            type: object
+            additionalProperties: true
+            default: {}
           messages:
             items:
               additionalProperties:

example/output.md

@@ -49,6 +49,15 @@ Resource Types:
       <td>object</td>
       <td>Refer to the Kubernetes API documentation for the fields of the `metadata` field.</td>
       <td>true</td>
+      </tr><tr>
+        <td><b>arbitrary</b></td>
+        <td>map[string]string</td>
+        <td>
+          arbitrary field<br/>
+          <br/>
+            <i>Default</i>: map[]<br/>
+        </td>
+        <td>false</td>
       </tr><tr>
         <td><b><a href="#examplemessagesindexkey">messages</a></b></td>
         <td>[]map[string]object</td>

pkg/builder/builder.go

@@ -220,7 +220,7 @@ func getTypeName(props *apiextensions.JSONSchemaProps) string {
 
 	// map
 	if props.Type == "object" && props.AdditionalProperties != nil {
-		if props.AdditionalProperties.Schema == nil && props.AdditionalItems.Allows {
+		if props.AdditionalProperties.Schema == nil && props.AdditionalProperties.Allows {
 			return "map[string]string"
 		}
 		return "map[string]"