// Copyright 2013 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 IOS_CHROME_BROWSER_BROWSER_STATE_CHROME_BROWSER_STATE_H_
#define IOS_CHROME_BROWSER_BROWSER_STATE_CHROME_BROWSER_STATE_H_

#include <map>
#include <string>

#include "base/callback_forward.h"
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "ios/chrome/browser/net/net_types.h"
#include "ios/web/public/browser_state.h"
#include "net/url_request/url_request_job_factory.h"

class ChromeBrowserStateIOData;
class PrefProxyConfigTracker;
class PrefService;
class TestChromeBrowserState;
class TestChromeBrowserStateManager;

namespace base {
class SequencedTaskRunner;
class Time;
}

namespace sync_preferences {
class PrefServiceSyncable;
}

namespace web {
class WebUIIOS;
}

namespace ios {

enum class ChromeBrowserStateType {
  REGULAR_BROWSER_STATE,
  INCOGNITO_BROWSER_STATE,
};

// This class is a Chrome-specific extension of the BrowserState interface.
class ChromeBrowserState : public web::BrowserState {
 public:
  ~ChromeBrowserState() override;

  // Returns the ChromeBrowserState corresponding to the given BrowserState.
  static ChromeBrowserState* FromBrowserState(BrowserState* browser_state);

  // Returns the ChromeBrowserState corresponding to the given WebUIIOS.
  static ChromeBrowserState* FromWebUIIOS(web::WebUIIOS* web_ui);

  // Returns sequenced task runner where browser state dependent I/O
  // operations should be performed.
  virtual scoped_refptr<base::SequencedTaskRunner> GetIOTaskRunner();

  // Returns the original "recording" ChromeBrowserState. This method returns
  // |this| if the ChromeBrowserState is not incognito.
  virtual ChromeBrowserState* GetOriginalChromeBrowserState() = 0;

  // Returns true if the ChromeBrowserState is off-the-record or if the
  // associated off-the-record browser state has been created.
  // Calling this method does not create the off-the-record browser state if it
  // does not already exist.
  virtual bool HasOffTheRecordChromeBrowserState() const = 0;

  // Returns the incognito version of this ChromeBrowserState. The returned
  // ChromeBrowserState instance is owned by this ChromeBrowserState instance.
  // WARNING: This will create the OffTheRecord ChromeBrowserState if it
  // doesn't already exist.
  virtual ChromeBrowserState* GetOffTheRecordChromeBrowserState() = 0;

  // Destroys the OffTheRecord ChromeBrowserState that is associated with this
  // ChromeBrowserState, if one exists.
  virtual void DestroyOffTheRecordChromeBrowserState() = 0;

  // Retrieves a pointer to the PrefService that manages the preferences.
  virtual PrefService* GetPrefs() = 0;

  // Retrieves a pointer to the PrefService that manages the preferences
  // for OffTheRecord browser states.
  virtual PrefService* GetOffTheRecordPrefs() = 0;

  // Allows access to ChromeBrowserStateIOData without going through
  // ResourceContext that is not compiled on iOS. This method must be called on
  // UI thread, but the returned object must only be accessed on the IO thread.
  virtual ChromeBrowserStateIOData* GetIOData() = 0;

  // Retrieves a pointer to the PrefService that manages the preferences as
  // a sync_preferences::PrefServiceSyncable.
  virtual sync_preferences::PrefServiceSyncable* GetSyncablePrefs();

  // Deletes all network related data since |time|. It deletes transport
  // security state since |time| and it also deletes HttpServerProperties data.
  // Works asynchronously, however if the |completion| callback is non-null, it
  // will be posted on the UI thread once the removal process completes.
  // Be aware that theoretically it is possible that |completion| will be
  // invoked after the Profile instance has been destroyed.
  virtual void ClearNetworkingHistorySince(base::Time time,
                                           const base::Closure& completion) = 0;

  // Returns an identifier of the browser state for debugging.
  std::string GetDebugName();

  // Returns the helper object that provides the proxy configuration service
  // access to the the proxy configuration possibly defined by preferences.
  virtual PrefProxyConfigTracker* GetProxyConfigTracker() = 0;

  // Creates the main net::URLRequestContextGetter that will be returned by
  // GetRequestContext(). Should only be called once.
  virtual net::URLRequestContextGetter* CreateRequestContext(
      ProtocolHandlerMap* protocol_handlers) = 0;

  // Creates a isolated net::URLRequestContextGetter. Should only be called once
  // per partition_path per browser state object.
  virtual net::URLRequestContextGetter* CreateIsolatedRequestContext(
      const base::FilePath& partition_path) = 0;

  // web::BrowserState
  net::URLRequestContextGetter* GetRequestContext() override;

 protected:
  explicit ChromeBrowserState(
      scoped_refptr<base::SequencedTaskRunner> io_task_runner);

 private:
  friend class ::TestChromeBrowserState;
  friend class ::TestChromeBrowserStateManager;

  scoped_refptr<base::SequencedTaskRunner> io_task_runner_;
  scoped_refptr<net::URLRequestContextGetter> request_context_getter_;

  DISALLOW_COPY_AND_ASSIGN(ChromeBrowserState);
};

}  // namespace ios

#endif  // IOS_CHROME_BROWSER_BROWSER_STATE_CHROME_BROWSER_STATE_H_