syntax = "proto3";
package rpc;

option go_package = "github.com/harness/gitness/gitrpc/rpc";

// SmartHTTPService is a service that provides RPCs required for HTTP-based Git
// clones via the smart HTTP protocol.
service SmartHTTPService {
  // The response body for GET /info/refs?service=git-upload-pack
  // Will be invoked when the user executes a `git fetch`, meaning the server
  // will upload the packs to that user. The user doesn't upload new objects.
  rpc InfoRefs(InfoRefsRequest) returns (stream InfoRefsResponse) {}

  // ServicePack is just upload-pack or receive-pack
  rpc ServicePack(stream ServicePackRequest) returns (stream ServicePackResponse) {}
}

message InfoRefsRequest {
  string repo_uid = 1;
  // Service can be: upload-pack or receive-pack
  string service = 2;
  // Parameters to use with git -c (key=value pairs)
  repeated string git_config_options = 3;

  // Git protocol version
  string git_protocol = 4;
}

message InfoRefsResponse {
  bytes data = 1;
}

message ServicePackRequest {
  // repository should only be present only in the first message of the stream
  string repo_uid = 1;
  // Service can be: upload-pack or receive-pack
  string service = 2;
  // Raw data to be copied to stdin of 'git upload-pack'
  bytes data = 3;
  // Parameters to use with git -c (key=value pairs)
  repeated string git_config_options = 4;

  // Git protocol version
  string git_protocol = 5;

  // user_id become env variable, used by the Git {pre,post}-receive
  // hooks. They should only be present in the first message of the stream.
  string principal_id = 6;
}

message ServicePackResponse {
  // Raw data from stdout of 'git upload-pack'
  bytes data = 1;
}