// Copyright (c) 2013 The Chromium OS 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 "shill/out_of_credits_detector.h"

#include "shill/active_passive_out_of_credits_detector.h"
#include "shill/cellular_service.h"
#include "shill/logging.h"
#include "shill/no_out_of_credits_detector.h"
#include "shill/subscription_state_out_of_credits_detector.h"

namespace shill {

OutOfCreditsDetector::OutOfCreditsDetector(EventDispatcher *dispatcher,
                                           Manager *manager,
                                           Metrics *metrics,
                                           CellularService *service)
    : dispatcher_(dispatcher),
      manager_(manager),
      metrics_(metrics),
      service_(service),
      out_of_credits_(false) {
}

OutOfCreditsDetector::~OutOfCreditsDetector() {
}

// static
OutOfCreditsDetector *
OutOfCreditsDetector::CreateDetector(OOCType detector_type,
                                     EventDispatcher *dispatcher,
                                     Manager *manager,
                                     Metrics *metrics,
                                     CellularService *service) {
  switch (detector_type) {
    case OOCTypeActivePassive:
      LOG(INFO) << __func__
                << ": Using active-passive out-of-credits detection";
      return
          new ActivePassiveOutOfCreditsDetector(dispatcher,
                                                manager,
                                                metrics,
                                                service);
    case OOCTypeSubscriptionState:
      LOG(INFO) << __func__
                << ": Using subscription status out-of-credits detection";
      return
          new SubscriptionStateOutOfCreditsDetector(dispatcher,
                                                    manager,
                                                    metrics,
                                                    service);
    default:
      LOG(INFO) << __func__ << ": No out-of-credits detection";
      return
          new NoOutOfCreditsDetector(dispatcher,
                                     manager,
                                     metrics,
                                     service);
  }
}

void OutOfCreditsDetector::ReportOutOfCredits(bool state) {
  SLOG(Cellular, 2) << __func__ << ": " << state;
  if (state == out_of_credits_) {
    return;
  }
  out_of_credits_ = state;
  service_->SignalOutOfCreditsChanged(state);
}

}  // namespace shill