// Copyright 2016 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.

#ifndef CHROME_BROWSER_UI_WEBUI_WELCOME_HANDLER_H_
#define CHROME_BROWSER_UI_WEBUI_WELCOME_HANDLER_H_

#include "base/macros.h"
#include "chrome/browser/ui/webui/signin/login_ui_service.h"
#include "content/public/browser/web_ui_message_handler.h"

class Browser;
class Profile;

// Handles actions on Welcome page.
class WelcomeHandler : public content::WebUIMessageHandler,
                       public LoginUIService::Observer {
 public:
  explicit WelcomeHandler(content::WebUI* web_ui);
  ~WelcomeHandler() override;

  // LoginUIService::Observer:
  void OnSyncConfirmationUIClosed(
      LoginUIService::SyncConfirmationUIClosedResult result) override;

  // content::WebUIMessageHandler:
  void RegisterMessages() override;

 private:
  enum WelcomeResult {
    // User navigated away from page.
    DEFAULT = 0,
    // User clicked the "No Thanks" button.
    DECLINED = 1,
    // User completed sign-in flow.
    SIGNED_IN = 2,
    // User attempted sign-in flow, then navigated away.
    ATTEMPTED = 3,
    // User attempted sign-in flow, then clicked "No Thanks."
    ATTEMPTED_DECLINED = 4,

    // New results must be added before this line, and should correspond to
    // values in tools/metrics/histograms/histograms.xml.
    WELCOME_RESULT_MAX
  };

  void HandleActivateSignIn(const base::ListValue* args);
  void HandleUserDecline(const base::ListValue* args);
  void GoToNewTabPage();

  Browser* GetBrowser();

  Profile* profile_;
  LoginUIService* login_ui_service_;
  WelcomeResult result_;

  DISALLOW_COPY_AND_ASSIGN(WelcomeHandler);
};

#endif  // CHROME_BROWSER_UI_WEBUI_WELCOME_HANDLER_H_