feat: impl memo comment api

proto/api/v2/memo_service.proto

@@ -9,6 +9,10 @@ import "google/api/client.proto";
 option go_package = "gen/api/v2";
 
 service MemoService {
+  rpc CreateMemo(CreateMemoRequest) returns (CreateMemoResponse) {
+    option (google.api.http) = {post: "/api/v2/memos"};
+  }
+
   rpc ListMemos(ListMemosRequest) returns (ListMemosResponse) {
     option (google.api.http) = {get: "/api/v2/memos"};
   }
@@ -17,6 +21,26 @@ service MemoService {
     option (google.api.http) = {get: "/api/v2/memos/{id}"};
     option (google.api.method_signature) = "id";
   }
+
+  rpc CreateMemoComment(CreateMemoCommentRequest) returns (CreateMemoCommentResponse) {
+    option (google.api.http) = {post: "/api/v2/memos/{id}/comments"};
+    option (google.api.method_signature) = "id";
+  }
+
+  rpc ListMemoComments(ListMemoCommentsRequest) returns (ListMemoCommentsResponse) {
+    option (google.api.http) = {get: "/api/v2/memos/{id}/comments"};
+    option (google.api.method_signature) = "id";
+  }
+}
+
+enum Visibility {
+  VISIBILITY_UNSPECIFIED = 0;
+
+  PRIVATE = 1;
+
+  PROTECTED = 2;
+
+  PUBLIC = 3;
 }
 
 message Memo {
@@ -37,6 +61,16 @@ message Memo {
   bool pinned = 8;
 }
 
+message CreateMemoRequest {
+  string content = 1;
+
+  Visibility visibility = 2;
+}
+
+message CreateMemoResponse {
+  Memo memo = 1;
+}
+
 message ListMemosRequest {
   int32 page = 1;
 
@@ -58,12 +92,21 @@ message GetMemoResponse {
   Memo memo = 1;
 }
 
-enum Visibility {
-  VISIBILITY_UNSPECIFIED = 0;
+message CreateMemoCommentRequest {
+  // id is the memo id to create comment for.
+  int32 id = 1;
 
-  PRIVATE = 1;
-
-  PROTECTED = 2;
-
-  PUBLIC = 3;
+  CreateMemoRequest create = 2;
+}
+
+message CreateMemoCommentResponse {
+  Memo memo = 1;
+}
+
+message ListMemoCommentsRequest {
+  int32 id = 1;
+}
+
+message ListMemoCommentsResponse {
+  repeated Memo memos = 1;
 }