// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef REMOTING_IOS_SESSION_REMOTING_CLIENT_H_
#define REMOTING_IOS_SESSION_REMOTING_CLIENT_H_

#import <CoreGraphics/CoreGraphics.h>
#import <Foundation/Foundation.h>

#import "remoting/ios/display/gl_display_handler.h"

#include "remoting/base/chromoting_event.h"
#include "remoting/client/feedback_data.h"
#include "remoting/protocol/client_authentication_config.h"
#include "remoting/protocol/connection_to_host.h"

namespace remoting {

class GestureInterpreter;
class KeyboardInterpreter;

}  // namespace remoting

@class HostInfo;
@class GlDisplayHandler;

// A list of notifications that will be sent out for different types of Remoting
// Client events.
//
extern NSString* const kHostSessionStatusChanged;
extern NSString* const kHostSessionPinProvided;

// List of keys in user info from events.
extern NSString* const kSessionDetails;
extern NSString* const kSessionSupportsPairing;
extern NSString* const kSessionStateErrorCode;

extern NSString* const kHostSessionCreatePairing;
extern NSString* const kHostSessionHostName;
extern NSString* const kHostSessionPin;

// Remoting Client is the entry point for starting a session with a remote
// host. This object should not be reused. Remoting Client will use the default
// NSNotificationCenter to signal session state changes using the key
// |kHostSessionStatusChanged|. It expects to receive an event back on
// |kHostSessionPinProvided| when the session is asking for a PIN authenication.
@interface RemotingClient : NSObject<GlDisplayHandlerDelegate>

// Connect to a given host.
// |hostInfo| is all the details around a host.
// |username| is the username to be used when connecting.
// |accessToken| is the oAuth access token to provided to create the session.
// |entryPoint| is the entry point of the session. Only used for telemetry.
- (void)connectToHost:(HostInfo*)hostInfo
             username:(NSString*)username
          accessToken:(NSString*)accessToken
           entryPoint:(remoting::ChromotingEvent::SessionEntryPoint)entryPoint;

// Disconnect the current host connection.
- (void)disconnectFromHost;

// Mirrors the native client session delegate interface:

- (void)onConnectionState:(remoting::protocol::ConnectionToHost::State)state
                    error:(remoting::protocol::ErrorCode)error;

- (void)commitPairingCredentialsForHost:(NSString*)host
                                     id:(NSString*)id
                                 secret:(NSString*)secret;

- (void)
fetchSecretWithPairingSupported:(BOOL)pairingSupported
                       callback:
                           (const remoting::protocol::SecretFetchedCallback&)
                               secretFetchedCallback;

- (void)fetchThirdPartyTokenForUrl:(NSString*)tokenUrl
                          clientId:(NSString*)clinetId
                            scopes:(NSString*)scopes
                          callback:(const remoting::protocol::
                                        ThirdPartyTokenFetchedCallback&)
                                       tokenFetchedCallback;

- (void)setCapabilities:(NSString*)capabilities;

- (void)handleExtensionMessageOfType:(NSString*)type message:(NSString*)message;

- (void)setHostResolution:(CGSize)dipsResolution scale:(int)scale;

- (void)setVideoChannelEnabled:(BOOL)enabled;

// Creates a feedback data and returns it to the callback.
- (void)createFeedbackDataWithCallback:
    (void (^)(const remoting::FeedbackData&))callback;

// The display handler tied to the remoting client used to display the host.
@property(nonatomic, strong) GlDisplayHandler* displayHandler;
// The host info used to make the remoting client connection.
@property(nonatomic, readonly) HostInfo* hostInfo;
// The gesture interpreter used to handle gestures. It has no effect if the
// session is not connected.
@property(nonatomic, readonly) remoting::GestureInterpreter* gestureInterpreter;
// The keyboard interpreter used to convert key events and send them to the
// host. It has no effect if the session is not connected.
@property(nonatomic, readonly)
    remoting::KeyboardInterpreter* keyboardInterpreter;

@end

#endif  // REMOTING_IOS_SESSION_REMOTING_CLIENT_H_