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// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef CORE_INTERNAL_MEDIUMS_WEBRTC_STUB_H_
#define CORE_INTERNAL_MEDIUMS_WEBRTC_STUB_H_
#ifdef NO_WEBRTC
#include <cstddef>
#include <functional>
#include <memory>
#include <string>
#include "connections/implementation/mediums/webrtc_peer_id_stub.h"
#include "connections/implementation/mediums/webrtc_socket_stub.h"
#include "connections/implementation/proto/offline_wire_formats.pb.h"
#include "internal/platform/cancellation_flag.h"
#include "internal/platform/expected.h"
#include "internal/platform/listeners.h"
namespace nearby {
namespace connections {
namespace mediums {
// Entry point for connecting a data channel between two devices via WebRtc.
class WebRtc {
public:
// Callback that is invoked when a new connection is accepted.
using AcceptedConnectionCallback =
absl::AnyInvocable<void(WebRtcSocketWrapper socket)>;
WebRtc();
~WebRtc();
// Gets the default two-letter country code associated with current locale.
// For example, en_US locale resolves to "US".
const std::string GetDefaultCountryCode();
// Returns if WebRtc is available as a medium for nearby to transport data.
// Runs on @MainThread.
bool IsAvailable();
// Returns if the device is accepting connection with specific service id.
// Runs on @MainThread.
bool IsAcceptingConnections(const std::string& service_id);
// Prepares the device to accept incoming WebRtc connections. Returns a
// boolean value indicating if the device has started accepting connections.
// Runs on @MainThread.
bool StartAcceptingConnections(
const std::string& service_id, const WebrtcPeerId& self_peer_id,
const location::nearby::connections::LocationHint& location_hint,
AcceptedConnectionCallback callback);
// Try to stop (accepting) the specific connection with provided service id.
// Runs on @MainThread
void StopAcceptingConnections(const std::string& service_id);
// Initiates a WebRtc connection with peer device identified by |peer_id|
// with internal retry for maximum attempts of kConnectAttemptsLimit.
// Runs on @MainThread.
ErrorOr<WebRtcSocketWrapper> Connect(
const std::string& service_id, const WebrtcPeerId& peer_id,
const location::nearby::connections::LocationHint& location_hint,
CancellationFlag* cancellation_flag);
bool IsUsingCellular();
};
} // namespace mediums
} // namespace connections
} // namespace nearby
#endif
#endif // CORE_INTERNAL_MEDIUMS_WEBRTC_STUB_H_