[Swift5] Add useClasses cli option (#9608)

* [swift5] Add useClasses cliOption

* Update swift docs

docs/generators/swift5.md

@@ -39,6 +39,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |swiftPackagePath|Set a custom source path instead of OpenAPIClient/Classes/OpenAPIs.| |null|
 |swiftUseApiNamespace|Flag to make all the API classes inner-class of {{projectName}}API| |null|
 |useBacktickEscapes|Escape reserved words using backticks (default: false)| |false|
+|useClasses|Use final classes for models instead of structs (default: false)| |false|
 |useSPMFileStructure|Use SPM file structure and set the source path to Sources/{{projectName}} (default: false).| |null|
 
 ## IMPORT MAPPING

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/Swift5ClientCodegen.java

@@ -63,6 +63,7 @@ public class Swift5ClientCodegen extends DefaultCodegen implements CodegenConfig
     public static final String LENIENT_TYPE_CAST = "lenientTypeCast";
     public static final String USE_SPM_FILE_STRUCTURE = "useSPMFileStructure";
     public static final String SWIFT_PACKAGE_PATH = "swiftPackagePath";
+    public static final String USE_CLASSES = "useClasses";
     public static final String USE_BACKTICK_ESCAPES = "useBacktickEscapes";
     public static final String GENERATE_MODEL_ADDITIONAL_PROPERTIES = "generateModelAdditionalProperties";
     public static final String HASHABLE_MODELS = "hashableModels";
@@ -82,6 +83,7 @@ public class Swift5ClientCodegen extends DefaultCodegen implements CodegenConfig
     protected boolean swiftUseApiNamespace = false;
     protected boolean useSPMFileStructure = false;
     protected String swiftPackagePath = "Classes" + File.separator + "OpenAPIs";
+    protected boolean useClasses = false;
     protected boolean useBacktickEscapes = false;
     protected boolean generateModelAdditionalProperties = true;
     protected boolean hashableModels = true;
@@ -282,6 +284,8 @@ public class Swift5ClientCodegen extends DefaultCodegen implements CodegenConfig
                 + " and set the source path to Sources" + File.separator + "{{projectName}} (default: false)."));
         cliOptions.add(new CliOption(SWIFT_PACKAGE_PATH, "Set a custom source path instead of "
                 + projectName + File.separator + "Classes" + File.separator + "OpenAPIs" + "."));
+        cliOptions.add(new CliOption(USE_CLASSES, "Use final classes for models instead of structs (default: false)")
+                .defaultValue(Boolean.FALSE.toString()));
 
         cliOptions.add(new CliOption(HASHABLE_MODELS,
             "Make hashable models (default: true)")
@@ -484,6 +488,11 @@ public class Swift5ClientCodegen extends DefaultCodegen implements CodegenConfig
             typeMapping.put("binary", "Data");
         }
 
+        if (additionalProperties.containsKey(USE_CLASSES)) {
+            setUseClasses(convertPropertyToBooleanAndWriteBack(USE_CLASSES));
+        }
+        additionalProperties.put(USE_CLASSES, useClasses);
+
         setLenientTypeCast(convertPropertyToBooleanAndWriteBack(LENIENT_TYPE_CAST));
 
         // make api and model doc path available in mustache template
@@ -904,6 +913,10 @@ public class Swift5ClientCodegen extends DefaultCodegen implements CodegenConfig
         this.swiftPackagePath = swiftPackagePath;
     }
 
+    public void setUseClasses(boolean useClasses) {
+        this.useClasses = useClasses;
+    }
+
     public void setUseBacktickEscapes(boolean useBacktickEscapes) {
         this.useBacktickEscapes = useBacktickEscapes;
     }

modules/openapi-generator/src/test/java/org/openapitools/codegen/options/Swift5OptionsProvider.java

@@ -96,6 +96,7 @@ public class Swift5OptionsProvider implements OptionsProvider {
                 .put(Swift5ClientCodegen.GENERATE_MODEL_ADDITIONAL_PROPERTIES, GENERATE_MODEL_ADDITIONAL_PROPERTIES_VALUE)
                 .put(Swift5ClientCodegen.HASHABLE_MODELS, HASHABLE_MODELS_VALUE)
                 .put(Swift5ClientCodegen.MAP_FILE_BINARY_TO_DATA, "false")
+                .put(Swift5ClientCodegen.USE_CLASSES, "false")
                 .build();
     }