syntax = "proto3";

package zgs_grpc;

option go_package = "github.com/0glabs/0g-storage-client/node/proto;zgs_grpc";

message Empty {}

/// 32-byte hash root
message DataRoot {
  bytes value = 1;
}

/// A proof over a file-segment Merkle tree
message FileProof {
  /// sequence of 32-byte hashes
  repeated bytes lemma = 1;
  /// bit-paths (left=false, right=true) alongside the lemmas
  repeated bool path = 2;
}

/// A file segment plus its Merkle proof
message SegmentWithProof {
  DataRoot root       = 1; // file Merkle root
  bytes data          = 2; // raw segment bytes
  uint64 index        = 3; // segment index
  FileProof proof     = 4; // Merkle proof of this leaf
  uint64 file_size    = 5; // total file length
}

message UploadSegmentsByTxSeqRequest {
  repeated SegmentWithProof segments = 1;
  uint64 tx_seq                      = 2;
}

message PingRequest {
  string message = 1;
}

message PingReply {
  string message = 1;
}

// A trivial ping service
service ZgsGrpcService {
  rpc Ping (PingRequest) returns (PingReply);
  rpc UploadSegmentsByTxSeq(UploadSegmentsByTxSeqRequest) returns (Empty);
}