// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "device/bluetooth/bluetooth_adapter_mac_metrics.h"

#import <CoreBluetooth/CoreBluetooth.h>
#import <Foundation/Foundation.h>

#include "base/mac/mac_util.h"
#include "base/metrics/histogram_functions.h"

namespace {

#if !defined(MAC_OS_X_VERSION_10_13) || \
    MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_13

const NSInteger CBErrorConnectionFailed = 10;
const NSInteger CBErrorConnectionLimitReached = 11;

// Match the SDK, which now has a typo. https://openradar.appspot.com/34413811
const NSInteger CBErrorUnkownDevice = 12;

#endif  // MAC_OS_X_VERSION_10_13

MacOSBluetoothOperationsResult GetMacOSOperationResultFromNSError(
    NSError* error) {
  if (!error)
    return MacOSBluetoothOperationsResult::NO_ERROR;
  NSString* error_domain = [error domain];
  NSInteger error_code = [error code];
  if ([error_domain isEqualToString:CBErrorDomain]) {
    switch (error_code) {
      case CBErrorUnknown:
        return MacOSBluetoothOperationsResult::CBERROR_UNKNOWN;
      case CBErrorInvalidParameters:
        return MacOSBluetoothOperationsResult::CBERROR_INVALID_PARAMETERS;
      case CBErrorInvalidHandle:
        return MacOSBluetoothOperationsResult::CBERROR_INVALID_HANDLE;
      case CBErrorNotConnected:
        return MacOSBluetoothOperationsResult::CBERROR_NOT_CONNECTED;
      case CBErrorOutOfSpace:
        return MacOSBluetoothOperationsResult::CBERROR_OUT_OF_SPACE;
      case CBErrorOperationCancelled:
        return MacOSBluetoothOperationsResult::CBERROR_OPERATION_CANCELLED;
      case CBErrorConnectionTimeout:
        return MacOSBluetoothOperationsResult::CBERROR_CONNECTION_TIMEOUT;
      case CBErrorPeripheralDisconnected:
        return MacOSBluetoothOperationsResult::CBERROR_PERIPHERAL_DISCONNECTED;
      case CBErrorUUIDNotAllowed:
        return MacOSBluetoothOperationsResult::CBERROR_UUID_NOT_ALLOWED;
      case CBErrorAlreadyAdvertising:
        return MacOSBluetoothOperationsResult::CBERROR_ALREADY_ADVERTISING;
      case CBErrorConnectionFailed:
        if (base::mac::IsAtLeastOS10_13()) {
          return MacOSBluetoothOperationsResult::CBERROR_CONNECTION_FAILED;
        } else {
          // For macOS 10.12 or before, the value CBErrorMaxConnection has the
          // same value than CBErrorConnectionFailed and the same description
          // than CBErrorConnectionLimitReached.
          return MacOSBluetoothOperationsResult::
              CBERROR_CONNECTION_LIMIT_REACHED;
        }
      case CBErrorConnectionLimitReached:
        return MacOSBluetoothOperationsResult::CBERROR_CONNECTION_LIMIT_REACHED;
      case CBErrorUnkownDevice:
        return MacOSBluetoothOperationsResult::CBERROR_UNKNOWN_DEVICE;
      default:
        NOTREACHED();
    }
    return MacOSBluetoothOperationsResult::CBATT_ERROR_UNKNOWN_ERROR_CODE;
  } else if ([error_domain isEqualToString:CBATTErrorDomain]) {
    switch (static_cast<CBATTError>(error_code)) {
      case CBATTErrorSuccess:
        return MacOSBluetoothOperationsResult::CBATT_ERROR_SUCCESS;
      case CBATTErrorInvalidHandle:
        return MacOSBluetoothOperationsResult::CBATT_ERROR_INVALID_HANDLE;
      case CBATTErrorReadNotPermitted:
        return MacOSBluetoothOperationsResult::CBATT_ERROR_READ_NOT_PERMITTED;
      case CBATTErrorWriteNotPermitted:
        return MacOSBluetoothOperationsResult::CBATT_ERROR_WRITE_NOT_PERMITTED;
      case CBATTErrorInvalidPdu:
        return MacOSBluetoothOperationsResult::CBATT_ERROR_INVALID_PDU;
      case CBATTErrorInsufficientAuthentication:
        return MacOSBluetoothOperationsResult::
            CBATT_ERROR_INSUFFICIENT_AUTHENTICATION;
      case CBATTErrorRequestNotSupported:
        return MacOSBluetoothOperationsResult::
            CBATT_ERROR_REQUEST_NOT_SUPPORTED;
      case CBATTErrorInvalidOffset:
        return MacOSBluetoothOperationsResult::CBATT_ERROR_INVALID_OFFSET;
      case CBATTErrorInsufficientAuthorization:
        return MacOSBluetoothOperationsResult::
            CBATT_ERROR_INSUFFICIENT_AUTHORIZATION;
      case CBATTErrorPrepareQueueFull:
        return MacOSBluetoothOperationsResult::CBATT_ERROR_PREPARE_QUEUE_FULL;
      case CBATTErrorAttributeNotFound:
        return MacOSBluetoothOperationsResult::CBATT_ERROR_ATTRIBUTE_NOT_FOUND;
      case CBATTErrorAttributeNotLong:
        return MacOSBluetoothOperationsResult::CBATT_ERROR_ATTRIBUTE_NOT_LONG;
      case CBATTErrorInsufficientEncryptionKeySize:
        return MacOSBluetoothOperationsResult::
            CBATT_ERROR_INSUFFICIENT_ENCRYPTION_KEY_SIZE;
      case CBATTErrorInvalidAttributeValueLength:
        return MacOSBluetoothOperationsResult::
            CBATT_ERROR_INVALID_ATTRIBUTE_VALUE_LENGTH;
      case CBATTErrorUnlikelyError:
        return MacOSBluetoothOperationsResult::CBATT_ERROR_UNLIKELY_ERROR;
      case CBATTErrorInsufficientEncryption:
        return MacOSBluetoothOperationsResult::
            CBATT_ERROR_INSUFFICIENT_ENCRYPTION;
      case CBATTErrorUnsupportedGroupType:
        return MacOSBluetoothOperationsResult::
            CBATT_ERROR_UNSUPPORTED_GROUP_TYPE;
      case CBATTErrorInsufficientResources:
        return MacOSBluetoothOperationsResult::
            CBATT_ERROR_INSUFFICIENT_RESOURCES;
    }
    return MacOSBluetoothOperationsResult::CBERROR_UNKNOWN_ERROR_CODE;
  }
  // TODO(crbug.com/755667): Needs to create an histogram to record unknown
  // error domains.
  return MacOSBluetoothOperationsResult::UNKNOWN_ERROR_DOMAIN;
}

}  // namespace

void RecordDidFailToConnectPeripheralResult(NSError* error) {
  MacOSBluetoothOperationsResult histogram_macos_error =
      GetMacOSOperationResultFromNSError(error);
  base::UmaHistogramSparse(
      "Bluetooth.MacOS.Errors.DidFailToConnectToPeripheral",
      static_cast<int>(histogram_macos_error));
}

void RecordDidDisconnectPeripheralResult(NSError* error) {
  MacOSBluetoothOperationsResult histogram_macos_error =
      GetMacOSOperationResultFromNSError(error);
  base::UmaHistogramSparse("Bluetooth.MacOS.Errors.DidDisconnectPeripheral",
                           static_cast<int>(histogram_macos_error));
}

void RecordDidDiscoverPrimaryServicesResult(NSError* error) {
  MacOSBluetoothOperationsResult histogram_macos_error =
      GetMacOSOperationResultFromNSError(error);
  base::UmaHistogramSparse("Bluetooth.MacOS.Errors.DidDiscoverPrimaryServices",
                           static_cast<int>(histogram_macos_error));
}

void RecordDidDiscoverCharacteristicsResult(NSError* error) {
  MacOSBluetoothOperationsResult histogram_macos_error =
      GetMacOSOperationResultFromNSError(error);
  base::UmaHistogramSparse("Bluetooth.MacOS.Errors.DidDiscoverCharacteristics",
                           static_cast<int>(histogram_macos_error));
}

void RecordDidUpdateValueResult(NSError* error) {
  MacOSBluetoothOperationsResult histogram_macos_error =
      GetMacOSOperationResultFromNSError(error);
  base::UmaHistogramSparse("Bluetooth.MacOS.Errors.DidUpdateValue",
                           static_cast<int>(histogram_macos_error));
}

void RecordDidWriteValueResult(NSError* error) {
  MacOSBluetoothOperationsResult histogram_macos_error =
      GetMacOSOperationResultFromNSError(error);
  base::UmaHistogramSparse("Bluetooth.MacOS.Errors.DidWriteValue",
                           static_cast<int>(histogram_macos_error));
}

void RecordDidUpdateNotificationStateResult(NSError* error) {
  MacOSBluetoothOperationsResult histogram_macos_error =
      GetMacOSOperationResultFromNSError(error);
  base::UmaHistogramSparse("Bluetooth.MacOS.Errors.DidUpdateNotificationState",
                           static_cast<int>(histogram_macos_error));
}

void RecordDidDiscoverDescriptorsResult(NSError* error) {
  MacOSBluetoothOperationsResult histogram_macos_error =
      GetMacOSOperationResultFromNSError(error);
  base::UmaHistogramSparse("Bluetooth.MacOS.Errors.DidDiscoverDescriptors",
                           static_cast<int>(histogram_macos_error));
}

void RecordDidUpdateValueForDescriptorResult(NSError* error) {
  MacOSBluetoothOperationsResult histogram_macos_error =
      GetMacOSOperationResultFromNSError(error);
  base::UmaHistogramSparse("Bluetooth.MacOS.Errors.DidUpdateValueForDescriptor",
                           static_cast<int>(histogram_macos_error));
}

void RecordDidWriteValueForDescriptorResult(NSError* error) {
  MacOSBluetoothOperationsResult histogram_macos_error =
      GetMacOSOperationResultFromNSError(error);
  base::UmaHistogramSparse("Bluetooth.MacOS.Errors.DidWriteValueForDescriptor",
                           static_cast<int>(histogram_macos_error));
}