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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chromeos/ash/components/phonehub/invalid_connection_disconnector.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "chromeos/ash/components/multidevice/logging/logging.h"
#include "chromeos/ash/components/phonehub/phone_model.h"
namespace ash::phonehub {
namespace {
// The grace period time for the phone status model to remain non-empty when
// the phone is connected. If the phone status model is still empty after this
// period of time, ConnectionManager should call Disconnect().
constexpr base::TimeDelta kEmptyPhoneStatusModelGracePeriodTimeDelta =
base::Seconds(45);
} // namespace
InvalidConnectionDisconnector::InvalidConnectionDisconnector(
secure_channel::ConnectionManager* connection_manager,
PhoneModel* phone_model)
: InvalidConnectionDisconnector(connection_manager,
phone_model,
std::make_unique<base::OneShotTimer>()) {}
InvalidConnectionDisconnector::InvalidConnectionDisconnector(
secure_channel::ConnectionManager* connection_manager,
PhoneModel* phone_model,
std::unique_ptr<base::OneShotTimer> timer)
: connection_manager_(connection_manager),
phone_model_(phone_model),
timer_(std::move(timer)) {
connection_manager_->AddObserver(this);
}
InvalidConnectionDisconnector::~InvalidConnectionDisconnector() {
connection_manager_->RemoveObserver(this);
}
void InvalidConnectionDisconnector::OnConnectionStatusChanged() {
timer_->Stop();
if (IsPhoneConnected() && !DoesPhoneStatusModelExist()) {
timer_->Start(FROM_HERE, kEmptyPhoneStatusModelGracePeriodTimeDelta,
base::BindOnce(&InvalidConnectionDisconnector::OnTimerFired,
base::Unretained(this)));
}
}
void InvalidConnectionDisconnector::OnTimerFired() {
if (!IsPhoneConnected() || DoesPhoneStatusModelExist())
return;
PA_LOG(INFO) << "Grace period ended for an empty PhoneStatusModel while in "
"the connected state; disconnecting from phone";
connection_manager_->Disconnect();
}
bool InvalidConnectionDisconnector::IsPhoneConnected() const {
return connection_manager_->GetStatus() ==
secure_channel::ConnectionManager::Status::kConnected;
}
bool InvalidConnectionDisconnector::DoesPhoneStatusModelExist() const {
return phone_model_->phone_status_model().has_value();
}
} // namespace ash::phonehub
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