add intro

api/main.proto

@@ -365,6 +365,17 @@ service EveningDetectiveServer {
     };
   }
 
+  rpc UpdateScenarioIntro(UpdateScenarioIntroReq) returns (UpdateScenarioIntroRsp) {
+    option (google.api.http) = {
+      put : "/api/scenarios/{id}/introduction"
+      body: "*"
+    };
+    option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_operation) = {
+      tags   : "Сценарии";
+      summary: "Обновить введение сценария";
+    };
+  }
+
   rpc DownloadScenarioArchive(DownloadScenarioArchiveReq) returns (google.api.HttpBody) {
     option (google.api.http) = {
       get: "/api/scenarios/{id}/archive"
@@ -776,7 +787,13 @@ message Scenario {
 }
 
 message Story {
-  repeated Place places = 1;
+  Introduction      introduction = 2;
+  repeated Place    places       = 1;
+}
+
+message Introduction {
+  string text  = 1;
+  string audio = 2;
 }
 
 message Place {
@@ -868,6 +885,15 @@ message DeleteScenarioPlaceRsp {
   string error = 1;
 }
 
+message UpdateScenarioIntroReq {
+  int32        id           = 1;
+  Introduction introduction = 2;
+}
+
+message UpdateScenarioIntroRsp {
+  string error = 1;
+}
+
 message DownloadScenarioArchiveReq {
   int32 id = 1;
 }