syntax = "proto3";
package harmony.stream.sync.message ;

option go_package = "message";

message Message {
  oneof req_or_resp {
    Request req = 1;
    Response resp = 2;
  }
}

message Request {
  uint64 req_id = 1;
  oneof request {
    GetBlockNumberRequest get_block_number_request = 2;
    GetBlockHashesRequest get_block_hashes_request = 3;
    GetBlocksByNumRequest get_blocks_by_num_request = 4;
    GetBlocksByHashesRequest get_blocks_by_hashes_request = 5;
  }
}

message GetBlockNumberRequest {}

message GetBlockHashesRequest {
  repeated uint64 nums = 1 [packed=true];
}

message GetBlocksByNumRequest {
  repeated uint64 nums = 1 [packed=true];
}

message GetBlocksByHashesRequest {
  repeated bytes block_hashes = 1;
}

message Response {
  uint64 req_id = 1;
  oneof response {
    ErrorResponse error_response = 2;
    GetBlockNumberResponse get_block_number_response = 3;
    GetBlockHashesResponse get_block_hashes_response = 4;
    GetBlocksByNumResponse get_blocks_by_num_response = 5;
    GetBlocksByHashesResponse get_blocks_by_hashes_response = 6;
  }
}

message ErrorResponse {
  string error = 1;
}

message GetBlockNumberResponse {
  uint64 number = 1;
}

message GetBlockHashesResponse {
  repeated bytes hashes = 1;
}

message GetBlocksByNumResponse {
  repeated bytes blocks_bytes = 1;
  repeated bytes commit_sig = 2;
}

message GetBlocksByHashesResponse {
  repeated bytes blocks_bytes = 1;
  repeated bytes commit_sig = 2;
}