syntax = "proto3";

package marznode;

message Empty {}

enum ConfigFormat {
  PLAIN = 0;
  JSON = 1;
  YAML = 2;
}

message Backend {
  string name = 1;
  optional string type = 2;
  optional string version = 3;
  repeated Inbound inbounds = 4;
}

message BackendsResponse {
  repeated Backend backends = 1;
}

message Inbound {
  string tag = 1;
  optional string config = 2;
}

message User {
  uint32 id = 1;
  string username = 2;
  string key = 3;
}

message UserData {
  User user = 1;
  repeated Inbound inbounds = 2;
}

message UsersData {
  repeated UserData users_data = 1;
}

message UsersStats {
  message UserStats {
    uint32 uid = 1;
    uint64 usage = 2;
  }
  repeated UserStats users_stats = 1;
}

message LogLine {
  string line = 1;
}

message BackendConfig {
  string configuration = 1;
  ConfigFormat config_format = 2;
}

message BackendLogsRequest {
  string backend_name = 1;
  bool include_buffer = 2;
}

message RestartBackendRequest {
  string backend_name = 1;
  optional BackendConfig config = 2;
}

message BackendStats {
  bool running = 1;
}

service MarzService {
  rpc SyncUsers(stream UserData) returns (Empty);
  rpc RepopulateUsers(UsersData) returns (Empty);
  rpc FetchBackends(Empty) returns (BackendsResponse);
  rpc FetchUsersStats(Empty) returns (UsersStats);
  rpc FetchBackendConfig(Backend) returns (BackendConfig);
  rpc RestartBackend(RestartBackendRequest) returns (Empty);
  rpc StreamBackendLogs(BackendLogsRequest) returns (stream LogLine);
  rpc GetBackendStats(Backend) returns (BackendStats);
}