[kotlin-server][ktor2] fix isKtor, update samples (#20327)

* fix isKtor, update samples

* fi dockerfile

* fix dataclass

* add new files

* fix template

* regenerate samples

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinServerCodegen.java

@@ -288,13 +288,13 @@ public class KotlinServerCodegen extends AbstractKotlinCodegen implements BeanVa
 
         supportingFiles.add(new SupportingFile("README.mustache", "", "README.md"));
 
-        if (isKtor()) {
+        if (isKtor2Or3()) {
             supportingFiles.add(new SupportingFile("Dockerfile.mustache", "", "Dockerfile"));
         }
 
         String gradleBuildFile = "build.gradle";
 
-        if (isJavalin() || isKtor()) {
+        if (isJavalin() || isKtor2Or3()) {
             gradleBuildFile = "build.gradle.kts";
         }
 
@@ -302,7 +302,7 @@ public class KotlinServerCodegen extends AbstractKotlinCodegen implements BeanVa
         supportingFiles.add(new SupportingFile("settings.gradle.mustache", "", "settings.gradle"));
         supportingFiles.add(new SupportingFile("gradle.properties", "", "gradle.properties"));
 
-        if (isKtor()) {
+        if (isKtor2Or3()) {
             additionalProperties.put(Constants.IS_KTOR, true);
 
             supportingFiles.add(new SupportingFile("AppMain.kt.mustache", packageFolder, "AppMain.kt"));
@@ -445,7 +445,20 @@ public class KotlinServerCodegen extends AbstractKotlinCodegen implements BeanVa
         return Constants.JAVALIN5.equals(library) || Constants.JAVALIN6.equals(library);
     }
 
-    private boolean isKtor() {
+    private boolean isKtor2Or3() {
         return Constants.KTOR.equals(library) || Constants.KTOR2.equals(library);
     }
+
+    /**
+     * Returns true if latest version of ktor is used.
+     *
+     * @return true if latest veresion of ktor is used.
+     */
+    private boolean isKtor() {
+        return Constants.KTOR.equals(library);
+    }
+
+    private boolean isKtor2() {
+        return Constants.KTOR2.equals(library);
+    }
 }

modules/openapi-generator/src/main/resources/kotlin-server/libraries/ktor2/_api_body.mustache

@@ -1,5 +1,5 @@
 {{#hasAuthMethods}}
-{{>libraries/ktor/_principal}}
+{{>libraries/ktor2/_principal}}
 {{#examples}}
 {{#-first}}
 {{#lambda.indented}}{{>_response}}{{/lambda.indented}}
@@ -12,7 +12,7 @@ call.respond(HttpStatusCode.NotImplemented)
 {{^hasAuthMethods}}
 {{#examples}}
 {{#-first}}
-{{>libraries/ktor/_response}}
+{{>libraries/ktor2/_response}}
 {{/-first}}
 {{/examples}}
 {{^examples}}

modules/openapi-generator/src/main/resources/kotlin-server/libraries/ktor2/api.mustache

@@ -35,13 +35,13 @@ fun Route.{{classname}}() {
     {{^featureResources}}
     route("{{path}}") {
         {{#lambda.lowercase}}{{httpMethod}}{{/lambda.lowercase}} {
-            {{#lambda.indented_12}}{{>libraries/ktor/_api_body}}{{/lambda.indented_12}}
+            {{#lambda.indented_12}}{{>libraries/ktor2/_api_body}}{{/lambda.indented_12}}
         }
     }
     {{/featureResources}}
     {{#featureResources}}
     {{#lambda.lowercase}}{{httpMethod}}{{/lambda.lowercase}}<Paths.{{operationId}}> {
-        {{#lambda.indented_8}}{{>libraries/ktor/_api_body}}{{/lambda.indented_8}}
+        {{#lambda.indented_8}}{{>libraries/ktor2/_api_body}}{{/lambda.indented_8}}
     }
     {{/featureResources}}
     {{#hasAuthMethods}}

modules/openapi-generator/src/main/resources/kotlin-server/libraries/ktor2/data_class.mustache

@@ -0,0 +1,52 @@
+{{#parcelizeModels}}
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
+
+{{/parcelizeModels}}
+{{#serializableModel}}
+import java.io.Serializable
+{{/serializableModel}}
+/**
+ * {{{description}}}
+{{#vars}}
+ * @param {{{name}}} {{{description}}}
+{{/vars}}
+ */
+{{#parcelizeModels}}
+@Parcelize
+{{/parcelizeModels}}
+{{#hasVars}}data {{/hasVars}}class {{classname}}(
+{{#requiredVars}}
+{{>data_class_req_var}}{{^-last}},
+{{/-last}}{{/requiredVars}}{{#hasRequired}}{{#hasOptional}},
+{{/hasOptional}}{{/hasRequired}}{{#optionalVars}}{{>data_class_opt_var}}{{^-last}},
+{{/-last}}{{/optionalVars}}
+) {{^serializableModel}}{{#parcelizeModels}} : Parcelable{{/parcelizeModels}}{{/serializableModel}}{{^parcelizeModels}}{{#serializableModel}}: Serializable {{/serializableModel}}{{/parcelizeModels}}{{#parcelizeModels}}{{#serializableModel}} : Parcelable, Serializable {{/serializableModel}}{{/parcelizeModels}}
+{{#vendorExtensions.x-has-data-class-body}}
+{
+{{/vendorExtensions.x-has-data-class-body}}
+{{#serializableModel}}
+    companion object {
+        private const val serialVersionUID: Long = 123
+    }
+{{/serializableModel}}
+{{#hasEnums}}
+    {{#vars}}
+    {{#isEnum}}
+    /**
+    * {{{description}}}
+    * Values: {{#allowableValues}}{{#enumVars}}{{&name}}{{^-last}},{{/-last}}{{/enumVars}}{{/allowableValues}}
+    */
+    enum class {{{nameInPascalCase}}}(val value: {{{dataType}}}){
+    {{#allowableValues}}
+    {{#enumVars}}
+        {{&name}}({{{value}}}){{^-last}},{{/-last}}{{#-last}};{{/-last}}
+    {{/enumVars}}
+    {{/allowableValues}}
+    }
+{{/isEnum}}
+{{/vars}}
+{{/hasEnums}}
+{{#vendorExtensions.x-has-data-class-body}}
+}
+{{/vendorExtensions.x-has-data-class-body}}

modules/openapi-generator/src/main/resources/kotlin-server/libraries/ktor2/data_class_opt_var.mustache

@@ -0,0 +1,4 @@
+{{#description}}
+    /* {{{.}}} */
+{{/description}}
+    {{>modelMutable}} {{{name}}}: {{#isEnum}}{{{classname}}}.{{{nameInPascalCase}}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}? = {{{defaultValue}}}{{^defaultValue}}null{{/defaultValue}}

modules/openapi-generator/src/main/resources/kotlin-server/libraries/ktor2/data_class_req_var.mustache

@@ -0,0 +1,5 @@
+{{#description}}
+    /* {{{.}}} */
+{{/description}}
+    {{! Note that required properties may be nullable according to the OpenAPI specification. }}
+    {{>modelMutable}} {{{name}}}: {{#isEnum}}{{{classname}}}.{{{nameInPascalCase}}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{#isNullable}}?{{/isNullable}}{{#defaultValue}} = {{^isNumber}}{{{defaultValue}}}{{/isNumber}}{{#isNumber}}{{{dataType}}}("{{{defaultValue}}}"){{/isNumber}}{{/defaultValue}}