Fix content type header

common/changes/@autorest/openapi-to-typespec/contentType_2025-02-12-08-59.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@autorest/openapi-to-typespec",
+      "comment": "Fix content type header",
+      "type": "patch"
+    }
+  ],
+  "packageName": "@autorest/openapi-to-typespec"
+}

packages/extensions/openapi-to-typespec/src/generate/generate-client.ts

@@ -7,7 +7,7 @@ export function generateObjectClientDecorator(typespecObject: TypespecObject) {
 
   definitions.push(generateAugmentedDecorators(typespecObject.name, typespecObject.clientDecorators));
 
-  for (const property of typespecObject.properties) {
+  for (const property of typespecObject.properties ?? []) {
     const decorators = generateAugmentedDecorators(
       `${typespecObject.name}.${property.name}`,
       property.clientDecorators,

packages/extensions/openapi-to-typespec/src/generate/generate-object.ts

@@ -1,5 +1,4 @@
 import { TypespecObject } from "../interfaces";
-import { getOptions } from "../options";
 import { generateDecorators } from "../utils/decorators";
 import { generateDocs } from "../utils/docs";
 import { getModelPropertiesDeclarations } from "../utils/model-generation";
@@ -36,7 +35,7 @@ export function generateObject(typespecObject: TypespecObject) {
     }
   }
 
-  definitions = [...definitions, ...getModelPropertiesDeclarations(typespecObject.properties)];
+  definitions = [...definitions, ...getModelPropertiesDeclarations(typespecObject.properties ?? [])];
   definitions.push("}");
 
   return definitions.join("\n");

packages/extensions/openapi-to-typespec/src/interfaces.ts

@@ -119,13 +119,12 @@ export interface TypespecVoidType extends TypespecDataType {
   name: "_";
 }
 
-export type TypespecModel = TypespecTemplateModel | TypespecDataType;
+export type TypespecModel = TypespecTemplateModel | TypespecObject;
 
-export interface TypespecTemplateModel extends TypespecDataType {
+export interface TypespecTemplateModel extends TypespecDataType, WithAdditionalProperties {
   kind: "template";
   arguments?: TypespecModel[];
   namedArguments?: Record<string, string>; // TO-DO: value is string for now, should be refacted to some object type
-  additionalProperties?: TypespecParameter[]; // Currently for body purpose
   additionalTemplateModel?: string; // Currently for LRO header purpose
 }
 
@@ -164,6 +163,10 @@ export interface WithSuppressDirective {
   suppressionMessage?: string;
 }
 
+export interface WithAdditionalProperties {
+  additionalProperties?: TypespecObjectProperty[];
+}
+
 export type TypespecParameterLocation = "path" | "query" | "header" | "body";
 export interface TypespecParameter extends TypespecDataType {
   kind: "parameter";
@@ -205,10 +208,10 @@ export interface TypespecAlias {
   module?: string;
 }
 
-export interface TypespecObject extends TypespecDataType {
+export interface TypespecObject extends TypespecDataType, WithAdditionalProperties {
   kind: "object";
-  properties: TypespecObjectProperty[];
-  parents: string[];
+  properties?: TypespecObjectProperty[];
+  parents?: string[];
   extendedParents?: string[];
   spreadParents?: string[];
   decorators?: TypespecDecorator[];