[groovy] support enum generation in groovy client

docs/generators/groovy.md

@@ -39,7 +39,6 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
-|fullJavaUtil|whether to use fully qualified name for classes under java.util. This option only works for Java API client| |false|
 |groupId|groupId in generated pom.xml| |org.openapitools|
 |hideGenerationTimestamp|Hides the generation timestamp when files are generated.| |false|
 |ignoreAnyOfInEnum|Ignore anyOf keyword in enum| |false|

modules/openapi-generator/src/main/resources/Groovy/ApiUtils.mustache

@@ -1,16 +1,41 @@
 package {{invokerPackage}}
 
+import groovy.json.JsonBuilder
+import groovy.json.JsonGenerator
+import groovyx.net.http.ChainedHttpConfig
+import groovyx.net.http.ContentTypes
+import groovyx.net.http.NativeHandlers
+import groovyx.net.http.ToServer
+
 import static groovyx.net.http.HttpBuilder.configure
 import static java.net.URI.create
 
 class ApiUtils {
 
+    static def jsonGenerator = new JsonGenerator.Options()
+            .addConverter(Enum) { Enum u, String key ->
+                u.toString()
+            }
+            .build()
+
     void invokeApi(onSuccess, onFailure, basePath, versionPath, resourcePath, queryParams, headerParams, bodyParams, contentType, method, container, type)  {
         def (url, uriPath) = buildUrlAndUriPath(basePath, versionPath, resourcePath)
         println "url=$url uriPath=$uriPath"
         def http = configure {
             request.uri = url
             request.uri.path = uriPath
+            request.encoder(ContentTypes.JSON, { final ChainedHttpConfig config, final ToServer ts ->
+                final ChainedHttpConfig.ChainedRequest request = config.getChainedRequest();
+                if (NativeHandlers.Encoders.handleRawUpload(config, ts)) {
+                    return;
+                }
+
+                final Object body = NativeHandlers.Encoders.checkNull(request.actualBody());
+                final String json = ((body instanceof String || body instanceof GString)
+                        ? body.toString()
+                        : new JsonBuilder(body, jsonGenerator).toString());
+                ts.toServer(NativeHandlers.Encoders.stringToStream(json, request.actualCharset()));
+            })
         }
         .invokeMethod(String.valueOf(method).toLowerCase()) {
             request.uri.query = queryParams

modules/openapi-generator/src/main/resources/Groovy/model.mustache

@@ -7,12 +7,6 @@ import {{import}};
 
 {{#models}}
 {{#model}}
-@Canonical
-class {{classname}} {
-    {{#vars}}
-    {{#description}}/* {{{.}}} */{{/description}}
-    {{{dataType}}} {{name}}{{#defaultValue}} = {{{.}}}{{/defaultValue}}
-    {{/vars}}
-}
+{{#isEnum}}{{>modelEnum}}{{/isEnum}}{{^isEnum}}{{>modelClass}}{{/isEnum}}
 {{/model}}
 {{/models}}

modules/openapi-generator/src/main/resources/Groovy/modelClass.mustache

@@ -0,0 +1,21 @@
+@Canonical
+class {{classname}} {
+{{#vars}}
+    {{#isEnum}}
+
+    {{^isContainer}}
+{{#lambda.indented}}
+    {{>modelEnum}}{{/lambda.indented}}
+    {{/isContainer}}
+    {{#isContainer}}
+    {{#mostInnerItems}}
+{{#lambda.indented}}
+    {{>modelEnum}}{{/lambda.indented}}
+    {{/mostInnerItems}}
+    {{/isContainer}}
+
+    {{/isEnum}}
+    {{#description}}/* {{{.}}} */{{/description}}
+    {{{datatypeWithEnum}}} {{name}}{{#defaultValue}} = {{{.}}}{{/defaultValue}}
+{{/vars}}
+}

modules/openapi-generator/src/main/resources/Groovy/modelEnum.mustache

@@ -0,0 +1,25 @@
+enum {{{datatypeWithEnum}}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}} {
+{{#allowableValues}}{{#enumVars}}
+    {{#enumDescription}}
+        /**
+        * {{.}}
+        */
+    {{/enumDescription}}
+    {{{name}}}({{{value}}}){{^-last}},
+    {{/-last}}{{/enumVars}}{{/allowableValues}}
+
+    private final {{{dataType}}} value
+
+    {{{datatypeWithEnum}}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}}({{{dataType}}} value) {
+        this.value = value
+    }
+
+    {{{dataType}}} getValue() {
+        value
+    }
+
+    @Override
+    String toString() {
+        String.valueOf(value)
+    }
+}

samples/client/petstore/groovy/src/main/groovy/org/openapitools/api/ApiUtils.groovy

@@ -1,16 +1,41 @@
 package org.openapitools.api
 
+import groovy.json.JsonBuilder
+import groovy.json.JsonGenerator
+import groovyx.net.http.ChainedHttpConfig
+import groovyx.net.http.ContentTypes
+import groovyx.net.http.NativeHandlers
+import groovyx.net.http.ToServer
+
 import static groovyx.net.http.HttpBuilder.configure
 import static java.net.URI.create
 
 class ApiUtils {
 
+    static def jsonGenerator = new JsonGenerator.Options()
+            .addConverter(Enum) { Enum u, String key ->
+                u.toString()
+            }
+            .build()
+
     void invokeApi(onSuccess, onFailure, basePath, versionPath, resourcePath, queryParams, headerParams, bodyParams, contentType, method, container, type)  {
         def (url, uriPath) = buildUrlAndUriPath(basePath, versionPath, resourcePath)
         println "url=$url uriPath=$uriPath"
         def http = configure {
             request.uri = url
             request.uri.path = uriPath
+            request.encoder(ContentTypes.JSON, { final ChainedHttpConfig config, final ToServer ts ->
+                final ChainedHttpConfig.ChainedRequest request = config.getChainedRequest();
+                if (NativeHandlers.Encoders.handleRawUpload(config, ts)) {
+                    return;
+                }
+
+                final Object body = NativeHandlers.Encoders.checkNull(request.actualBody());
+                final String json = ((body instanceof String || body instanceof GString)
+                        ? body.toString()
+                        : new JsonBuilder(body, jsonGenerator).toString());
+                ts.toServer(NativeHandlers.Encoders.stringToStream(json, request.actualCharset()));
+            })
         }
         .invokeMethod(String.valueOf(method).toLowerCase()) {
             request.uri.query = queryParams

samples/client/petstore/groovy/src/main/groovy/org/openapitools/model/Order.groovy

@@ -14,8 +14,33 @@ class Order {
     Integer quantity
 
     Date shipDate
+
+    enum StatusEnum {
+
+        PLACED("placed"),
+
+        APPROVED("approved"),
+
+        DELIVERED("delivered")
+
+        private final String value
+
+        StatusEnum(String value) {
+            this.value = value
+        }
+
+        String getValue() {
+            value
+        }
+
+        @Override
+        String toString() {
+            String.valueOf(value)
+        }
+    }
+
     /* Order Status */
-    String status
+    StatusEnum status
 
     Boolean complete = false
 }

samples/client/petstore/groovy/src/main/groovy/org/openapitools/model/Pet.groovy

@@ -20,6 +20,31 @@ class Pet {
     List<String> photoUrls = new ArrayList<>()
 
     List<Tag> tags
+
+    enum StatusEnum {
+
+        AVAILABLE("available"),
+
+        PENDING("pending"),
+
+        SOLD("sold")
+
+        private final String value
+
+        StatusEnum(String value) {
+            this.value = value
+        }
+
+        String getValue() {
+            value
+        }
+
+        @Override
+        String toString() {
+            String.valueOf(value)
+        }
+    }
+
     /* pet status in the store */
-    String status
+    StatusEnum status
 }