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// Copyright 2016 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.
#ifndef THIRD_PARTY_BLINK_PUBLIC_COMMON_BLUETOOTH_WEB_BLUETOOTH_DEVICE_ID_H_
#define THIRD_PARTY_BLINK_PUBLIC_COMMON_BLUETOOTH_WEB_BLUETOOTH_DEVICE_ID_H_
#include <array>
#include <string>
#include "third_party/blink/public/common/common_export.h"
namespace blink {
using WebBluetoothDeviceIdKey = std::array<uint8_t, 16>;
// Used to uniquely identify a Bluetooth Device for an Origin.
// A WebBluetoothDeviceId represents a 128bit key for bluetooth device id.
class BLINK_COMMON_EXPORT WebBluetoothDeviceId {
public:
// Default constructor that creates an invalid id. We implement it so that
// instances of this class in a container, e.g. std::unordered_map, can be
// accessed through the [] operator. Trying to call any function of the
// resulting object will DCHECK-fail.
WebBluetoothDeviceId();
// CHECKS that |device_id| is valid.
explicit WebBluetoothDeviceId(const WebBluetoothDeviceIdKey& device_id);
// CHECKS that |encoded_device_id| is a valid base64-encoded string.
explicit WebBluetoothDeviceId(const std::string& encoded_device_id);
// Copyable.
WebBluetoothDeviceId(const WebBluetoothDeviceId& other) = default;
WebBluetoothDeviceId& operator=(const WebBluetoothDeviceId& other) = default;
// Moveable.
WebBluetoothDeviceId(WebBluetoothDeviceId&& other) = default;
WebBluetoothDeviceId& operator=(WebBluetoothDeviceId&& other) = default;
~WebBluetoothDeviceId();
// Returns the base64 encoded string of `device_id_`.
std::string DeviceIdInBase64() const;
// Returns the serialization of the object.
std::string str() const;
// `device_id_` getter.
const WebBluetoothDeviceIdKey& DeviceId() const;
// The returned WebBluetoothDeviceId is generated by creating a random 128bit
// binary key.
static WebBluetoothDeviceId Create();
// This method will return true. if |encoded_device_id| results in a 128bit
// base64-encoding string. Otherwise returns false.
static bool IsValid(const std::string& encoded_device_id);
bool IsValid() const;
bool operator==(const WebBluetoothDeviceId& device_id) const;
bool operator!=(const WebBluetoothDeviceId& device_id) const;
bool operator<(const WebBluetoothDeviceId& device_id) const;
private:
WebBluetoothDeviceIdKey device_id_;
bool is_initialized_ = false;
};
// This is required by gtest to print a readable output on test failures.
BLINK_COMMON_EXPORT std::ostream& operator<<(
std::ostream& out,
const WebBluetoothDeviceId& device_id);
struct WebBluetoothDeviceIdHash {
size_t operator()(const WebBluetoothDeviceId& device_id) const {
return std::hash<std::string>()(device_id.str());
}
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_PUBLIC_COMMON_BLUETOOTH_WEB_BLUETOOTH_DEVICE_ID_H_
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