ApiServer

src/Contracts/Contracts.csproj

@@ -6,8 +6,22 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Google.Protobuf" Version="3.27.0" />
+    <PackageReference Include="Grpc.AspNetCore" Version="2.67.0" />
+    <PackageReference Include="Grpc.Net.Client" Version="2.67.0" />
+    <PackageReference Include="Grpc.Tools" Version="2.67.0">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\Domain\Domain.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Protobuf Include="Protos\sms.proto" GrpcServices="Both" />
+  </ItemGroup>
+
 </Project>

src/Contracts/Protos/sms.proto

@@ -0,0 +1,43 @@
+syntax = "proto3";
+
+import "google/protobuf/wrappers.proto";
+
+package sms.test;
+
+option csharp_namespace = "Sms.Test";
+
+message MenuItem {
+  string id = 1;
+  string article = 2;
+  string name = 3;
+  double price = 4;
+  bool is_weighted = 5;
+  string full_path = 6;
+  repeated string barcodes = 7;
+}
+
+message OrderItem {
+  string id = 1;
+  double quantity = 2;
+}
+
+message Order {
+  string id = 1;
+  repeated OrderItem order_items = 2;
+}
+
+message GetMenuResponse {
+  bool success = 1;
+  string error_message = 2;
+  repeated MenuItem menu_items = 3;
+}
+
+message SendOrderResponse {
+  bool success = 1;
+  string error_message = 2;
+}
+
+service SmsTestService {
+  rpc GetMenu(google.protobuf.BoolValue) returns (GetMenuResponse);
+  rpc SendOrder(Order) returns (SendOrderResponse);
+}