syntax = "proto3";
package tendermint.privval;

import "tendermint/crypto/keys.proto";
import "tendermint/types/types.proto";
import "gogoproto/gogo.proto";

option go_package = "github.com/tendermint/tendermint/proto/tendermint/privval";

enum Errors {
  ERRORS_UNKNOWN             = 0;
  ERRORS_UNEXPECTED_RESPONSE = 1;
  ERRORS_NO_CONNECTION       = 2;
  ERRORS_CONNECTION_TIMEOUT  = 3;
  ERRORS_READ_TIMEOUT        = 4;
  ERRORS_WRITE_TIMEOUT       = 5;
}

message RemoteSignerError {
  int32  code        = 1;
  string description = 2;
}

// PubKeyRequest requests the consensus public key from the remote signer.
message PubKeyRequest {
  string chain_id = 1;
}

// PubKeyResponse is a response message containing the public key.
message PubKeyResponse {
  tendermint.crypto.PublicKey pub_key = 1 [(gogoproto.nullable) = false];
  RemoteSignerError           error   = 2;
}

// SignVoteRequest is a request to sign a vote
message SignVoteRequest {
  tendermint.types.Vote vote     = 1;
  string                chain_id = 2;
}

// SignedVoteResponse is a response containing a signed vote or an error
message SignedVoteResponse {
  tendermint.types.Vote vote  = 1 [(gogoproto.nullable) = false];
  RemoteSignerError     error = 2;
}

// SignProposalRequest is a request to sign a proposal
message SignProposalRequest {
  tendermint.types.Proposal proposal = 1;
  string                    chain_id = 2;
}

// SignedProposalResponse is response containing a signed proposal or an error
message SignedProposalResponse {
  tendermint.types.Proposal proposal = 1 [(gogoproto.nullable) = false];
  RemoteSignerError         error    = 2;
}

// PingRequest is a request to confirm that the connection is alive.
message PingRequest {}

// PingResponse is a response to confirm that the connection is alive.
message PingResponse {}

message Message {
  oneof sum {
    PubKeyRequest          pub_key_request          = 1;
    PubKeyResponse         pub_key_response         = 2;
    SignVoteRequest        sign_vote_request        = 3;
    SignedVoteResponse     signed_vote_response     = 4;
    SignProposalRequest    sign_proposal_request    = 5;
    SignedProposalResponse signed_proposal_response = 6;
    PingRequest            ping_request             = 7;
    PingResponse           ping_response            = 8;
  }
}

// AuthSigMessage is duplicated from p2p prior to the P2P refactor.
// It is used for the SecretConnection until we migrate privval to gRPC.
// https://github.com/tendermint/tendermint/issues/4698
message AuthSigMessage {
  tendermint.crypto.PublicKey pub_key = 1 [(gogoproto.nullable) = false];
  bytes                       sig     = 2;
}