// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef DEVICE_BLUETOOTH_BLUETOOTH_GATT_SERVICE_H_
#define DEVICE_BLUETOOTH_BLUETOOTH_GATT_SERVICE_H_

#include <string>

#include "base/functional/callback_forward.h"
#include "device/bluetooth/bluetooth_export.h"
#include "device/bluetooth/public/cpp/bluetooth_uuid.h"

namespace device {

// BluetoothGattService represents a local or remote GATT service. A GATT
// service is hosted by a peripheral and represents a collection of data in
// the form of GATT characteristics and a set of included GATT services if this
// service is what is called "a primary service".
class DEVICE_BLUETOOTH_EXPORT BluetoothGattService {
 public:
  // Interacting with Characteristics and Descriptors can produce
  // this set of errors.
  // These values are persisted to logs. Entries should not be renumbered and
  // numeric values should never be reused. This enum should be kept in sync
  // with the BluetoothGattServiceGattErrorCode enum in
  // src/tools/metrics/histograms/enums.xml.
  enum class GattErrorCode {
    kUnknown = 0,
    kFailed = 1,
    kInProgress = 2,
    kInvalidLength = 3,
    kNotPermitted = 4,
    kNotAuthorized = 5,
    kNotPaired = 6,
    kNotSupported = 7,
    kMaxValue = kNotSupported,
  };

  // The ErrorCallback is used by methods to asynchronously report errors.
  using ErrorCallback = base::OnceCallback<void(GattErrorCode error_code)>;

  // Identifier used to uniquely identify a GATT service object. This is
  // different from the service UUID: while multiple services with the same UUID
  // can exist on a Bluetooth device, the identifier returned from this method
  // is unique among all services on the adapter. The contents of the identifier
  // are platform specific.
  virtual std::string GetIdentifier() const = 0;

  // The Bluetooth-specific UUID of the service.
  virtual BluetoothUUID GetUUID() const = 0;

  // Indicates whether the type of this service is primary or secondary. A
  // primary service describes the primary function of the peripheral that
  // hosts it, while a secondary service only makes sense in the presence of a
  // primary service. A primary service may include other primary or secondary
  // services.
  virtual bool IsPrimary() const = 0;

  BluetoothGattService(const BluetoothGattService&) = delete;
  BluetoothGattService& operator=(const BluetoothGattService&) = delete;

  virtual ~BluetoothGattService();

 protected:
  BluetoothGattService();
};

}  // namespace device

#endif  // DEVICE_BLUETOOTH_BLUETOOTH_GATT_SERVICE_H_