syntax = "proto3";

package gitks;

import "google/protobuf/timestamp.proto";
import "oid.proto";
import "repository.proto";
import "tagger.proto";

message PayloadCommit {
  PayloadTagger author = 1;
  PayloadTagger committer = 2;
  Oid oid = 3;
  string message = 4;
  repeated Oid parents = 5;
  Oid tree = 6;
  google.protobuf.Timestamp timestamp = 7;
}

message CommitTrailer {
  string key = 1;
  string value = 2;
  bool separator_present = 3;
}

message CommitStats {
  uint32 additions = 1;
  uint32 deletions = 2;
  uint32 changed_files = 3;
}

message Commit {
  Oid oid = 1;
  string abbreviated_oid = 2;
  repeated Oid parent_oids = 3;
  Oid tree_oid = 4;
  Signature author = 5;
  Signature committer = 6;
  string subject = 7;
  string body = 8;
  string message = 9;
  repeated CommitTrailer trailers = 10;
  VerifiedSignature signature = 11;
  CommitStats stats = 12;
  google.protobuf.Timestamp authored_at = 13;
  google.protobuf.Timestamp committed_at = 14;
  bytes raw = 15;
}

message ListCommitsRequest {
  RepositoryHeader repository = 1;
  ObjectSelector revision = 2;
  string path = 3;
  google.protobuf.Timestamp since = 4;
  google.protobuf.Timestamp until = 5;
  bool first_parent = 6;
  bool all = 7;
  bool reverse = 8;
  uint32 max_parents = 9;
  uint32 min_parents = 10;
  Pagination pagination = 11;
}

message ListCommitsResponse {
  repeated Commit commits = 1;
  PageInfo page_info = 2;
}

message GetCommitRequest {
  RepositoryHeader repository = 1;
  ObjectSelector revision = 2;
  bool include_stats = 3;
  bool include_raw = 4;
}

message GetCommitAncestorsRequest {
  RepositoryHeader repository = 1;
  ObjectSelector revision = 2;
  bool first_parent = 3;
  Pagination pagination = 4;
}

message GetCommitAncestorsResponse {
  repeated Commit commits = 1;
  PageInfo page_info = 2;
}

message CreateCommitAction {
  enum Action {
    CREATE_COMMIT_ACTION_UNSPECIFIED = 0;
    CREATE_COMMIT_ACTION_CREATE = 1;
    CREATE_COMMIT_ACTION_UPDATE = 2;
    CREATE_COMMIT_ACTION_DELETE = 3;
    CREATE_COMMIT_ACTION_MOVE = 4;
    CREATE_COMMIT_ACTION_CHMOD = 5;
  }

  Action action = 1;
  string file_path = 2;
  string previous_path = 3;
  bytes content = 4;
  string encoding = 5;
  bool executable = 6;
  Oid last_commit_oid = 7;
}

message CreateCommitRequest {
  RepositoryHeader repository = 1;
  string branch = 2;
  string message = 3;
  Signature author = 4;
  Signature committer = 5;
  repeated CreateCommitAction actions = 6;
  ObjectSelector start_revision = 7;
  bool force = 8;
  repeated CommitTrailer trailers = 9;
}

message CreateCommitResponse {
  Commit commit = 1;
  string branch = 2;
}

message RevertCommitRequest {
  RepositoryHeader repository = 1;
  ObjectSelector commit = 2;
  string branch = 3;
  Signature committer = 4;
  string message = 5;
}

message CherryPickCommitRequest {
  RepositoryHeader repository = 1;
  ObjectSelector commit = 2;
  string branch = 3;
  Signature committer = 4;
  string message = 5;
  uint32 mainline = 6;
}

message CompareCommitsRequest {
  RepositoryHeader repository = 1;
  ObjectSelector base = 2;
  ObjectSelector head = 3;
  bool straight = 4;
  bool first_parent = 5;
  Pagination pagination = 6;
}

message CompareCommitsResponse {
  repeated Commit commits = 1;
  CommitStats stats = 2;
  PageInfo page_info = 3;
  Oid merge_base = 4;
}


message FindCommitRequest {
  RepositoryHeader repository = 1;
  ObjectSelector revision = 2;
  bool include_stats = 3;
}

message ListCommitsByOidRequest {
  RepositoryHeader repository = 1;
  repeated bytes oids = 2; // binary OID values
  bool include_stats = 3;
}

message ListCommitsByOidResponse {
  repeated Commit commits = 1;
}

message CommitIsAncestorRequest {
  RepositoryHeader repository = 1;
  string ancestor_oid = 2;
  string descendant_oid = 3;
}

message CommitIsAncestorResponse {
  bool is_ancestor = 1;
}

message CheckObjectsExistRequest {
  RepositoryHeader repository = 1;
  repeated string revisions = 2; // hex OIDs or rev expressions
}

message RevisionExistence {
  string revision = 1;
  bool exists = 2;
}

message CheckObjectsExistResponse {
  repeated RevisionExistence revisions = 1;
}

message CommitsByMessageRequest {
  RepositoryHeader repository = 1;
  string query = 2;          // regex or literal to search in commit messages
  string revision = 3;        // limit to this branch/ref (empty = all branches)
  uint32 limit = 4;
  uint32 offset = 5;
  bool case_insensitive = 6;
}

message CommitsByMessageResponse {
  repeated Commit commits = 1;
}


message GetCommitStatsRequest {
  RepositoryHeader repository = 1;
  ObjectSelector revision = 2;
}

message LastCommitForPathRequest {
  RepositoryHeader repository = 1;
  string path = 2;
  string revision = 3; // limit history to this ref
  bool literal_pathspec = 4;
}

message LastCommitForPathResponse {
  Commit commit = 1;
  string path = 2;
}


message CountCommitsRequest {
  RepositoryHeader repository = 1;
  string revision = 2;
  string path = 3;
  string since = 4; // ISO 8601 date
  string until = 5;
}

message CountCommitsResponse {
  uint64 count = 1;
}

message CountDivergingCommitsRequest {
  RepositoryHeader repository = 1;
  string left = 2;
  string right = 3;
}

message CountDivergingCommitsResponse {
  uint64 left_count = 1;
  uint64 right_count = 2;
}

service CommitService {
  rpc ListCommits(ListCommitsRequest) returns (ListCommitsResponse);
  rpc GetCommit(GetCommitRequest) returns (Commit);
  rpc GetCommitAncestors(GetCommitAncestorsRequest) returns (GetCommitAncestorsResponse);
  rpc CreateCommit(CreateCommitRequest) returns (CreateCommitResponse);
  rpc RevertCommit(RevertCommitRequest) returns (CreateCommitResponse);
  rpc CherryPickCommit(CherryPickCommitRequest) returns (CreateCommitResponse);
  rpc CompareCommits(CompareCommitsRequest) returns (CompareCommitsResponse);

  rpc FindCommit(FindCommitRequest) returns (Commit);
  rpc ListCommitsByOid(ListCommitsByOidRequest) returns (ListCommitsByOidResponse);
  rpc CommitIsAncestor(CommitIsAncestorRequest) returns (CommitIsAncestorResponse);
  rpc CheckObjectsExist(CheckObjectsExistRequest) returns (CheckObjectsExistResponse);
  rpc CommitsByMessage(CommitsByMessageRequest) returns (CommitsByMessageResponse);
  rpc GetCommitStats(GetCommitStatsRequest) returns (CommitStats);
  rpc LastCommitForPath(LastCommitForPathRequest) returns (LastCommitForPathResponse);

  rpc CountCommits(CountCommitsRequest) returns (CountCommitsResponse);
  rpc CountDivergingCommits(CountDivergingCommitsRequest) returns (CountDivergingCommitsResponse);
}