syntax = "proto3";
package tendermint.types;

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

import "third_party/proto/gogoproto/gogo.proto";
import "google/protobuf/timestamp.proto";
import "proto/libs/bits/types.proto";
import "proto/crypto/merkle/types.proto";
import "proto/version/version.proto";

// BlockIdFlag indicates which BlcokID the signature is for
enum BlockIDFlag {
  option (gogoproto.goproto_enum_stringer) = true;
  option (gogoproto.goproto_enum_prefix)   = false;

  BLOCKD_ID_FLAG_UNKNOWN = 0;
  BLOCK_ID_FLAG_ABSENT   = 1 [(gogoproto.enumvalue_customname) = "BlockIDFlagAbsent"];
  BLOCK_ID_FLAG_COMMIT   = 2 [(gogoproto.enumvalue_customname) = "BlockIDFlagCommit"];
  BLOCK_ID_FLAG_NIL      = 3 [(gogoproto.enumvalue_customname) = "BlockIDFlagNil"];
}

// SignedMsgType is a type of signed message in the consensus.
enum SignedMsgType {
  option (gogoproto.goproto_enum_stringer) = true;
  option (gogoproto.goproto_enum_prefix)   = false;

  SIGNED_MSG_TYPE_UNKNOWN = 0;
  // Votes
  PREVOTE_TYPE   = 1 [(gogoproto.enumvalue_customname) = "PrevoteType"];
  PRECOMMIT_TYPE = 2 [(gogoproto.enumvalue_customname) = "PrecommitType"];

  // Proposals
  PROPOSAL_TYPE = 32 [(gogoproto.enumvalue_customname) = "ProposalType"];
}

// PartsetHeader
message PartSetHeader {
  uint32 total = 1;
  bytes  hash  = 2;
}

message Part {
  uint32                         index = 1;
  bytes                          bytes = 2;
  tendermint.crypto.merkle.Proof proof = 3 [(gogoproto.nullable) = false];
}

// BlockID
message BlockID {
  bytes         hash         = 1;
  PartSetHeader parts_header = 2 [(gogoproto.nullable) = false];
}

// --------------------------------

// Header defines the structure of a Tendermint block header.
message Header {
  // basic block info
  tendermint.version.Consensus version  = 1 [(gogoproto.nullable) = false];
  string                       chain_id = 2 [(gogoproto.customname) = "ChainID"];
  int64                        height   = 3;
  google.protobuf.Timestamp    time     = 4 [(gogoproto.nullable) = false, (gogoproto.stdtime) = true];

  // prev block info
  BlockID last_block_id = 5 [(gogoproto.nullable) = false];

  // hashes of block data
  bytes last_commit_hash = 6;  // commit from validators from the last block
  bytes data_hash        = 7;  // transactions

  // hashes from the app output from the prev block
  bytes validators_hash      = 8;   // validators for the current block
  bytes next_validators_hash = 9;   // validators for the next block
  bytes consensus_hash       = 10;  // consensus params for current block
  bytes app_hash             = 11;  // state after txs from the previous block
  bytes last_results_hash    = 12;  // root hash of all results from the txs from the previous block

  // consensus info
  bytes evidence_hash    = 13;  // evidence included in the block
  bytes proposer_address = 14;  // original proposer of the block
}

// Data contains the set of transactions included in the block
message Data {
  // Txs that will be applied by state @ block.Height+1.
  // NOTE: not all txs here are valid.  We're just agreeing on the order first.
  // This means that block.AppHash does not include these txs.
  repeated bytes txs = 1;
  // Volatile
  bytes hash = 2;
}

// Vote represents a prevote, precommit, or commit vote from validators for
// consensus.
message Vote {
  SignedMsgType type     = 1;
  int64         height   = 2;
  int32         round    = 3;
  BlockID       block_id = 4
      [(gogoproto.nullable) = false, (gogoproto.customname) = "BlockID"];  // zero if vote is nil.
  google.protobuf.Timestamp timestamp = 5
      [(gogoproto.nullable) = false, (gogoproto.stdtime) = true];
  bytes validator_address = 6;
  int32 validator_index   = 7;
  bytes signature         = 8;
}

// Commit contains the evidence that a block was committed by a set of validators.
message Commit {
  int64                         height     = 1;
  int32                         round      = 2;
  BlockID                       block_id   = 3 [(gogoproto.nullable) = false, (gogoproto.customname) = "BlockID"];
  repeated CommitSig            signatures = 4 [(gogoproto.nullable) = false];
  bytes                         hash       = 5;
  tendermint.libs.bits.BitArray bit_array  = 6;
}

// CommitSig is a part of the Vote included in a Commit.
message CommitSig {
  BlockIDFlag               block_id_flag     = 1;
  bytes                     validator_address = 2;
  google.protobuf.Timestamp timestamp         = 3
      [(gogoproto.nullable) = false, (gogoproto.stdtime) = true];
  bytes signature = 4;
}

message Proposal {
  SignedMsgType             type      = 1;
  int64                     height    = 2;
  int32                     round     = 3;
  int32                     pol_round = 4;
  BlockID                   block_id  = 5 [(gogoproto.customname) = "BlockID", (gogoproto.nullable) = false];
  google.protobuf.Timestamp timestamp = 6
      [(gogoproto.nullable) = false, (gogoproto.stdtime) = true];
  bytes signature = 7;
}

message SignedHeader {
  Header header = 1;
  Commit commit = 2;
}

message BlockMeta {
  BlockID block_id   = 1 [(gogoproto.customname) = "BlockID", (gogoproto.nullable) = false];
  int64   block_size = 2;
  Header  header     = 3 [(gogoproto.nullable) = false];
  int64   num_txs    = 4;
}

// TxProof represents a Merkle proof of the presence of a transaction in the Merkle tree.
message TxProof {
  bytes                          root_hash = 1;
  bytes                          data      = 2;
  tendermint.crypto.merkle.Proof Proof     = 3;
}