syntax = "proto3";

package gitks;

import "commit.proto";
import "diff.proto";
import "oid.proto";
import "repository.proto";
import "tagger.proto";

message MergeOptions {
  enum Strategy {
    MERGE_STRATEGY_UNSPECIFIED = 0;
    MERGE_STRATEGY_RECURSIVE = 1;
    MERGE_STRATEGY_ORT = 2;
    MERGE_STRATEGY_RESOLVE = 3;
    MERGE_STRATEGY_OCTOPUS = 4;
    MERGE_STRATEGY_OURS = 5;
    MERGE_STRATEGY_SUBTREE = 6;
  }

  enum FastForwardMode {
    MERGE_FAST_FORWARD_MODE_UNSPECIFIED = 0;
    MERGE_FAST_FORWARD_MODE_ALLOWED = 1;
    MERGE_FAST_FORWARD_MODE_ONLY = 2;
    MERGE_FAST_FORWARD_MODE_NO_FF = 3;
  }

  Strategy strategy = 1;
  FastForwardMode fast_forward = 2;
  bool squash = 3;
  bool no_commit = 4;
  bool allow_unrelated_histories = 5;
  repeated string strategy_options = 6;
}

message MergeConflictSection {
  string label = 1;
  bytes content = 2;
}

message MergeConflict {
  string path = 1;
  uint32 mode = 2;
  Oid base_oid = 3;
  Oid ours_oid = 4;
  Oid theirs_oid = 5;
  repeated MergeConflictSection sections = 6;
  bool binary = 7;
}

message MergeResult {
  enum Status {
    MERGE_RESULT_STATUS_UNSPECIFIED = 0;
    MERGE_RESULT_STATUS_MERGED = 1;
    MERGE_RESULT_STATUS_FAST_FORWARD = 2;
    MERGE_RESULT_STATUS_ALREADY_UP_TO_DATE = 3;
    MERGE_RESULT_STATUS_CONFLICTS = 4;
    MERGE_RESULT_STATUS_ABORTED = 5;
  }

  Status status = 1;
  Commit commit = 2;
  Oid merge_base = 3;
  repeated MergeConflict conflicts = 4;
  DiffStats stats = 5;
  string message = 6;
}

message MergeRequest {
  RepositoryHeader repository = 1;
  string target_branch = 2;
  ObjectSelector source = 3;
  Signature committer = 4;
  string message = 5;
  MergeOptions options = 6;
}

message CheckMergeRequest {
  RepositoryHeader repository = 1;
  ObjectSelector target = 2;
  ObjectSelector source = 3;
  MergeOptions options = 4;
}

message ListMergeConflictsRequest {
  RepositoryHeader repository = 1;
  ObjectSelector target = 2;
  ObjectSelector source = 3;
  Pagination pagination = 4;
}

message ListMergeConflictsResponse {
  repeated MergeConflict conflicts = 1;
  PageInfo page_info = 2;
}

message ResolveMergeConflict {
  string path = 1;
  bytes content = 2;
}

message ResolveMergeConflictsRequest {
  RepositoryHeader repository = 1;
  string target_branch = 2;
  ObjectSelector source = 3;
  repeated ResolveMergeConflict resolutions = 4;
  Signature committer = 5;
  string message = 6;
}

message RebaseRequest {
  RepositoryHeader repository = 1;
  string branch = 2;
  ObjectSelector upstream = 3;
  Signature committer = 4;
}

message RebaseResult {
  enum Status {
    REBASE_RESULT_STATUS_UNSPECIFIED = 0;
    REBASE_RESULT_STATUS_REBASED = 1;
    REBASE_RESULT_STATUS_ALREADY_UP_TO_DATE = 2;
    REBASE_RESULT_STATUS_CONFLICTS = 3;
    REBASE_RESULT_STATUS_ABORTED = 4;
  }

  Status status = 1;
  Commit head = 2;
  repeated MergeConflict conflicts = 3;
}

service MergeService {
  rpc CheckMerge(CheckMergeRequest) returns (MergeResult);
  rpc Merge(MergeRequest) returns (MergeResult);
  rpc ListMergeConflicts(ListMergeConflictsRequest) returns (ListMergeConflictsResponse);
  rpc ResolveMergeConflicts(ResolveMergeConflictsRequest) returns (MergeResult);
  rpc Rebase(RebaseRequest) returns (RebaseResult);
}