chrome/browser/ui/app_list/speech_auth_helper.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_UI_APP_LIST_SPEECH_AUTH_HELPER_H_
   6 #define CHROME_BROWSER_UI_APP_LIST_SPEECH_AUTH_HELPER_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "components/signin/core/browser/profile_oauth2_token_service.h"
  13
  14 class Profile;
  15 class ProfileOAuth2TokenService;
  16
  17 namespace base {
  18 class Clock;
  19 }
  20
  21 namespace app_list {
  22
  23 // SpeechAuthHelper is a helper class to generate oauth tokens for audio
  24 // history. This encalsulates generating and refreshing the auth token for a
  25 // given profile. All functions should be called on the UI thread.
  26 class SpeechAuthHelper : public OAuth2TokenService::Consumer,
  27                          public OAuth2TokenService::Observer {
  28  public:
  29   SpeechAuthHelper(Profile* profile, base::Clock* clock);
  30   ~SpeechAuthHelper() override;
  31
  32   // Returns the current auth token. If the auth service is not available, or
  33   // there was a failure in obtaining a token, return the empty string.
  34   std::string GetToken() const;
  35
  36   // Returns the OAuth scope associated with the auth token.
  37   std::string GetScope() const;
  38
  39  private:
  40   // Overridden from OAuth2TokenService::Consumer:
  41   void OnGetTokenSuccess(const OAuth2TokenService::Request* request,
  42                          const std::string& access_token,
  43                          const base::Time& expiration_time) override;
  44   void OnGetTokenFailure(const OAuth2TokenService::Request* request,
  45                          const GoogleServiceAuthError& error) override;
  46
  47   // Overridden from OAuth2TokenService::Observer:
  48   void OnRefreshTokenAvailable(const std::string& account_id) override;
  49
  50   void ScheduleTokenFetch(const base::TimeDelta& fetch_delay);
  51   void FetchAuthToken();
  52
  53   base::Clock* clock_;
  54   ProfileOAuth2TokenService* token_service_;
  55   std::string authenticated_account_id_;
  56   std::string auth_token_;
  57   scoped_ptr<OAuth2TokenService::Request> auth_token_request_;
  58
  59   base::WeakPtrFactory<SpeechAuthHelper> weak_factory_;
  60
  61   DISALLOW_COPY_AND_ASSIGN(SpeechAuthHelper);
  62 };
  63
  64 }  // namespace app_list
  65
  66 #endif  // CHROME_BROWSER_UI_APP_LIST_SPEECH_AUTH_HELPER_H_