syntax = "proto2";

package location.nearby.proto;

import "logs/proto/logs_annotations/logs_annotations.proto";

option optimize_for = LITE_RUNTIME;
option (logs_proto.file_not_used_for_logging_except_enums) = true;
option java_api_version = 2;
option java_package = "com.google.location.nearby.proto";
option java_outer_classname = "ErrorCodeEnums";
option objc_class_prefix = "GNCP";

// The type of the error.
// It help to sort error codes to different types to analyze and also impact the
// logcat print it as Warning or Severe.
enum ErrorType {
  UNKNOWN_TYPE = 0;

  // The error should not happen on production, it's like the input is null or
  // not invalid or it's a unexpected API call. For example, start advertising
  // with empty service ID or start advertising with the same service ID twice.
  DEVELOPING = 1;

  // It’s about the device's capabilities, some devices may not support the
  // feature Nearby used. E.g. The device not support BLE advertising
  DEVICE = 2;

  // The failure return from the system or library API we used to communicate
  // with the medium. E.g. get null OS objects or call the API but get a
  // negative return value which indicates that the system does not allow to do
  // that now.
  SYSTEM = 3;

  // The network related failure. E.g. get an EOF exception while reading pipe
  // or fail to create connection.
  NETWORK = 4;

  // This may not be a failure, it can be the things we are interested in, like
  // to count how many BLE advertisements the device received in a specified
  // period and how many different advertisements in it, it can help us to know
  // the user under a clean or dirty environment.
  OTHERS = 5;
}

// The event which the error occurs on.
enum Event {
  UNKNOWN_EVENT = 0;
  START_ADVERTISING = 1;
  STOP_ADVERTISING = 2;
  START_LISTENING_INCOMING_CONNECTION = 3;
  STOP_LISTENING_INCOMING_CONNECTION = 4;
  START_DISCOVERING = 5;
  STOP_DISCOVERING = 6;
  CONNECT = 7;
  DISCONNECT = 8;
  ACCEPT_CONNECTION = 9;
  REJECT_CONNECTION = 10;
  SEND_PAYLOAD = 11;
  CANCEL_PAYLOAD = 12;
  RECEIVE_PAYLOAD = 13;
}

// The error to identify the common failure for all mediums. The range between 0
// and 30.
enum CommonError {
  UNKNOWN_ERROR = 0;

  // The common error for all mediums, the range between 0 and 30.

  // Developing error, the input with invalid format or empty.
  INVALID_PARAMETER = 1;
  // Device error, the medium not available on this device.
  MEDIUM_NOT_AVAILABLE = 2;
  // System error, the medium in the unexpected state, e.g. we have check the
  // medium is on, after then it suddently off and cause Nearby
  // Connection failed.
  UNEXPECTED_MEDIUM_STATE = 3;
  // System error, the medim not available because the resource ran out. e.g.
  // the Wi-Fi Direct initialized cause Wi-Fi Aware not available, or BLE
  // connections hit the maximan number, or Wi-Fi Hotstop already created.
  OUT_OF_RESOURCE = 4;

  // Reserved 5 to 30
}

// The error for event START_ADVERTISING. The range between 31 and 99.
enum StartAdvertisingError {
  reserved 37, 39;

  // Developing error, not allow to advertising fast pair model id and sharing
  // fast advertisement at the same time, they are both use fast
  // advertisement, and only allow 1 fast advertisement at the same time.
  MULTIPLE_FAST_ADVERTISEMENT_NOT_ALLOWED = 31;
  // System error, there's already someone advertising fast advertisement, not
  // allow to start another one.
  FAST_ADVERTISEMENT_ALREADY_ADVERTISED = 32;
  // Developing error, this service ID already requested, should not request
  // it again without stop advertising.
  DUPLICATE_ADVERTISING_REQUESTED = 33;
  // System error, failed to start GATT server
  START_GATT_SERVER_FAILED = 34;
  // System error, all advertising slot ran out, can't available for new
  // regular advertisement.
  BLE_MAX_GATT_ADVERTISEMENT_SLOT_REACHED = 35;
  // System error, failed to start advertising for legacy advertisements
  START_LEGACY_ADVERTISING_FAILED = 36;
  // System error, failed to start advertising for extended advertisements
  START_EXTENDED_ADVERTISING_FAILED = 38;
  // System error, there's already someone advertising on Bluetooth, not allow
  // to start another one.
  BLUETOOTH_ALREADY_ADVERTISED = 40;
  // System error, failed to modify the Bluetooth name.
  MODIFY_BLUETOOTH_NAME_FAILED = 41;
  // System error, failed to persist the original Bluetooth name into shared
  // preference.
  PERSIST_ORIGINAL_BLUETOOTH_NAME_FAILED = 42;
  // System error, failed to start advertising.
  START_ADVERTISING_FAILED = 43;

  // Developing error, not allow to advertising on Wi-Fi Lan(TDLS) without
  // accetpting connections. The connection may comes in very quickly, so need
  // to accetpt connections before advertising.
  SHOULD_ACCEPT_CONNECTIONS_BEFORE_ADVERTISING_ON_WIFI_LAN = 44;
  // System error, failed to acquire WifiAwareSession
  ACQUIRE_WIFI_AWARE_SESSION_FAILED = 45;

  // Next ID :46
}

enum Description {
  reserved 28;

  UNKNOWN = 0;
  NULL_SERVICE_ID = 1;
  NULL_ADVERTISEMENT_BYTES = 2;
  CONNECTIONS_FEATURE_DISABLED = 3;
  STALE_SDK_VERSION = 4;
  FEATURE_BLUETOOTH_NOT_SUPPORTED = 5;
  FEATURE_BLUETOOTH_LE_NOT_SUPPORTED = 6;
  NULL_BLUETOOTH_MANAGER = 7;
  NULL_BLUETOOTH_ADAPTER = 8;
  INVALID_FAST_PAIR_MODEL_ID = 9;
  INVALID_FAST_ADVERTISEMENT_DATA = 10;
  INVALID_ADVERTISEMENT_HEADER_DATA = 11;
  INVALID_REGULAR_ADVERTISEMENT_DATA = 12;
  NULL_BLUETOOTH_LE_ADVERTISER_COMPAT = 13;
  ADVERTISE_FAILED_ALREADY_STARTED = 14;
  ADVERTISE_FAILED_DATA_TOO_LARGE = 15;
  ADVERTISE_FAILED_FEATURE_UNSUPPORTED = 16;
  ADVERTISE_FAILED_INTERNAL_ERROR = 17;
  ADVERTISE_FAILED_TOO_MANY_ADVERTISERS = 18;
  INTERRUPTED_EXCEPTION = 19;
  EXECUTION_EXCEPTION = 20;
  NULL_BLUETOOTH_DEVICE_NAME = 21;
  SET_SCAN_MODE_FAILED = 22;
  INVOKE_API_FAILED = 23;
  TIMEOUT = 24;
  NULL_NFC_TAG = 25;
  FEATURE_NFC_NOT_SUPPORTED = 26;
  FEATURE_NFC_HOST_CARD_EMULATION_NOT_SUPPORTED = 27;
  WITHOUT_CONNECTED_WIFI_NETWOR = 29;
  MULTICAST_NOT_SUPPORTED = 30;
  NSD_NOT_ENABLED = 31;
  INVALID_PORT_NUMBER = 32;
  NULL_SERVICE_NAME = 33;
  NULL_SERVICE_TYPE = 34;
  WITHOUT_CONNECTED_WIFI_NETWORK = 35;
  FEATURE_WIFI_AWARE_NOT_SUPPORTED = 36;
  NULL_CONNECTIVITY_MANAGER = 37;
  NULL_WIFI_AWARE_MANAGER = 38;
  STALE_ANDROID_VERSION = 39;
  NULL_SERVICE_INFO = 40;
}