// Copyright (c) 2012 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.

#include "chrome/browser/signin/signin_tracker.h"

#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/signin/profile_oauth2_token_service.h"
#include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
#include "chrome/browser/signin/signin_manager.h"
#include "chrome/browser/signin/signin_manager_factory.h"
#include "content/public/browser/notification_details.h"
#include "content/public/browser/notification_source.h"
#include "google_apis/gaia/gaia_constants.h"

SigninTracker::SigninTracker(Profile* profile, Observer* observer)
    : profile_(profile), observer_(observer) {
  DCHECK(profile_);
  Initialize();
}

SigninTracker::~SigninTracker() {
  ProfileOAuth2TokenServiceFactory::GetForProfile(profile_)->
      RemoveObserver(this);
}

void SigninTracker::Initialize() {
  DCHECK(observer_);

  // Register for notifications from the SigninManager.
  registrar_.Add(this,
                 chrome::NOTIFICATION_GOOGLE_SIGNIN_FAILED,
                 content::Source<Profile>(profile_));

  OAuth2TokenService* token_service =
    ProfileOAuth2TokenServiceFactory::GetForProfile(profile_);
  token_service->AddObserver(this);
}

void SigninTracker::Observe(int type,
                            const content::NotificationSource& source,
                            const content::NotificationDetails& details) {
  DCHECK_EQ(chrome::NOTIFICATION_GOOGLE_SIGNIN_FAILED, type);

  // We should not get more than one of these notifications.
  const GoogleServiceAuthError& error =
      *(content::Details<const GoogleServiceAuthError>(details).ptr());
  observer_->SigninFailed(error);
}

void SigninTracker::OnRefreshTokenAvailable(const std::string& account_id) {
  // TODO: when OAuth2TokenService handles multi-login, this should check
  // that |account_id| is the primary account before signalling success.
  observer_->SigninSuccess();
}

void SigninTracker::OnRefreshTokenRevoked(const std::string& account_id) {
  NOTREACHED();
}