syntax = "proto3";
package ibc.core.connection.v1;

option go_package = "github.com/cosmos/cosmos-sdk/x/ibc/core/03-connection/types";

import "gogoproto/gogo.proto";
import "google/protobuf/any.proto";
import "ibc/core/client/v1/client.proto";
import "ibc/core/connection/v1/connection.proto";

// Msg defines the ibc/connection Msg service.
service Msg {
  // ConnectionOpenInit defines a rpc handler method for MsgConnectionOpenInit.
  rpc ConnectionOpenInit(MsgConnectionOpenInit) returns (MsgConnectionOpenInitResponse);

  // ConnectionOpenTry defines a rpc handler method for MsgConnectionOpenTry.
  rpc ConnectionOpenTry(MsgConnectionOpenTry) returns (MsgConnectionOpenTryResponse);

  // ConnectionOpenAck defines a rpc handler method for MsgConnectionOpenAck.
  rpc ConnectionOpenAck(MsgConnectionOpenAck) returns (MsgConnectionOpenAckResponse);

  // ConnectionOpenConfirm defines a rpc handler method for MsgConnectionOpenConfirm.
  rpc ConnectionOpenConfirm(MsgConnectionOpenConfirm) returns (MsgConnectionOpenConfirmResponse);
}

// MsgConnectionOpenInit defines the msg sent by an account on Chain A to
// initialize a connection with Chain B.
message MsgConnectionOpenInit {
  option (gogoproto.equal)           = false;
  option (gogoproto.goproto_getters) = false;

  string       client_id    = 1 [(gogoproto.moretags) = "yaml:\"client_id\""];
  Counterparty counterparty = 2 [(gogoproto.nullable) = false];
  Version      version      = 3;
  uint64       delay_period = 4 [(gogoproto.moretags) = "yaml:\"delay_period\""];
  string       signer       = 5;
}

// MsgConnectionOpenInitResponse defines the Msg/ConnectionOpenInit response type.
message MsgConnectionOpenInitResponse {}

// MsgConnectionOpenTry defines a msg sent by a Relayer to try to open a
// connection on Chain B.
message MsgConnectionOpenTry {
  option (gogoproto.equal)           = false;
  option (gogoproto.goproto_getters) = false;

  string client_id = 1 [(gogoproto.moretags) = "yaml:\"client_id\""];
  // in the case of crossing hello's, when both chains call OpenInit, we need the connection identifier
  // of the previous connection in state INIT
  string                    previous_connection_id = 2 [(gogoproto.moretags) = "yaml:\"previous_connection_id\""];
  google.protobuf.Any       client_state           = 3 [(gogoproto.moretags) = "yaml:\"client_state\""];
  Counterparty              counterparty           = 4 [(gogoproto.nullable) = false];
  uint64                    delay_period           = 5 [(gogoproto.moretags) = "yaml:\"delay_period\""];
  repeated Version          counterparty_versions  = 6 [(gogoproto.moretags) = "yaml:\"counterparty_versions\""];
  ibc.core.client.v1.Height proof_height           = 7
      [(gogoproto.moretags) = "yaml:\"proof_height\"", (gogoproto.nullable) = false];
  // proof of the initialization the connection on Chain A: `UNITIALIZED ->
  // INIT`
  bytes proof_init = 8 [(gogoproto.moretags) = "yaml:\"proof_init\""];
  // proof of client state included in message
  bytes proof_client = 9 [(gogoproto.moretags) = "yaml:\"proof_client\""];
  // proof of client consensus state
  bytes                     proof_consensus  = 10 [(gogoproto.moretags) = "yaml:\"proof_consensus\""];
  ibc.core.client.v1.Height consensus_height = 11
      [(gogoproto.moretags) = "yaml:\"consensus_height\"", (gogoproto.nullable) = false];
  string signer = 12;
}

// MsgConnectionOpenTryResponse defines the Msg/ConnectionOpenTry response type.
message MsgConnectionOpenTryResponse {}

// MsgConnectionOpenAck defines a msg sent by a Relayer to Chain A to
// acknowledge the change of connection state to TRYOPEN on Chain B.
message MsgConnectionOpenAck {
  option (gogoproto.equal)           = false;
  option (gogoproto.goproto_getters) = false;

  string              connection_id              = 1 [(gogoproto.moretags) = "yaml:\"connection_id\""];
  string              counterparty_connection_id = 2 [(gogoproto.moretags) = "yaml:\"counterparty_connection_id\""];
  Version             version                    = 3;
  google.protobuf.Any client_state               = 4 [(gogoproto.moretags) = "yaml:\"client_state\""];
  ibc.core.client.v1.Height proof_height         = 5
      [(gogoproto.moretags) = "yaml:\"proof_height\"", (gogoproto.nullable) = false];
  // proof of the initialization the connection on Chain B: `UNITIALIZED ->
  // TRYOPEN`
  bytes proof_try = 6 [(gogoproto.moretags) = "yaml:\"proof_try\""];
  // proof of client state included in message
  bytes proof_client = 7 [(gogoproto.moretags) = "yaml:\"proof_client\""];
  // proof of client consensus state
  bytes                     proof_consensus  = 8 [(gogoproto.moretags) = "yaml:\"proof_consensus\""];
  ibc.core.client.v1.Height consensus_height = 9
      [(gogoproto.moretags) = "yaml:\"consensus_height\"", (gogoproto.nullable) = false];
  string signer = 10;
}

// MsgConnectionOpenAckResponse defines the Msg/ConnectionOpenAck response type.
message MsgConnectionOpenAckResponse {}

// MsgConnectionOpenConfirm defines a msg sent by a Relayer to Chain B to
// acknowledge the change of connection state to OPEN on Chain A.
message MsgConnectionOpenConfirm {
  option (gogoproto.equal)           = false;
  option (gogoproto.goproto_getters) = false;

  string connection_id = 1 [(gogoproto.moretags) = "yaml:\"connection_id\""];
  // proof for the change of the connection state on Chain A: `INIT -> OPEN`
  bytes                     proof_ack    = 2 [(gogoproto.moretags) = "yaml:\"proof_ack\""];
  ibc.core.client.v1.Height proof_height = 3
      [(gogoproto.moretags) = "yaml:\"proof_height\"", (gogoproto.nullable) = false];
  string signer = 4;
}

// MsgConnectionOpenConfirmResponse defines the Msg/ConnectionOpenConfirm response type.
message MsgConnectionOpenConfirmResponse {}