using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media.Imaging;
using Tango.RemoteDesktop.Frames;
using Tango.RemoteDesktop.Network;

namespace Tango.FSE.Common.RemoteDesktop
{
    /// <summary>
    /// Represents a machine PPC remote desktop provider.
    /// </summary>
    public interface IRemoteDesktopProvider
    {
        /// <summary>
        /// Occurs when a remote desktop session has started.
        /// </summary>
        event EventHandler SessionStarted;

        /// <summary>
        /// Occurs when a remote desktop session has stopped.
        /// </summary>
        event EventHandler SessionStopped;

        /// <summary>
        /// Occurs when a new remote desktop screen frame is available.
        /// </summary>
        event EventHandler<DesktopFrameReceivedEventArgs> FrameReceived;

        /// <summary>
        /// Gets the current remote desktop session frame rate.
        /// </summary>
        double FrameRate { get; }

        /// <summary>
        /// Gets the current remote desktop session frame width.
        /// </summary>
        int FrameWidth { get; }

        /// <summary>
        /// Gets the current remote desktop session frame height.
        /// </summary>
        int FrameHeight { get; }

        /// <summary>
        /// Gets a value indicating whether the WebRTC channel is available.
        /// </summary>
        bool IsWebRtcActive { get; }

        /// <summary>
        /// Gets or sets a value indicating whether enable the WebRTC channel.
        /// </summary>
        bool EnableWebRtc { get; set; }

        /// <summary>
        /// Gets a value indicating whether a remote desktop session is active.
        /// </summary>
        bool InSession { get; }

        /// <summary>
        /// Gets a value indicating whether a remote desktop session can be started.
        /// </summary>
        bool CanStartSession { get; }

        /// <summary>
        /// Gets or sets the mouse move send interval.
        /// </summary>
        TimeSpan MouseMoveInterval { get; set; }

        /// <summary>
        /// Starts a remote desktop session.
        /// </summary>
        /// <returns></returns>
        Task StartSession();

        /// <summary>
        /// Ends the current remote desktop session.
        /// </summary>
        /// <returns></returns>
        Task EndSession();

        /// <summary>
        /// Creates a video recording handler.
        /// </summary>
        /// <returns></returns>
        VideoRecordingHandler CreateRecordingHandler();

        /// <summary>
        /// Sends a mouse down command to the remote PPC.
        /// </summary>
        /// <param name="button">The button.</param>
        /// <param name="location">The location.</param>
        /// <param name="viewSize">Size of the view.</param>
        void MouseDown(MouseButton button, Point location, Size viewSize);

        /// <summary>
        /// Sends a mouse up command to the remote PPC.
        /// </summary>
        /// <param name="button">The button.</param>
        /// <param name="location">The location.</param>
        /// <param name="viewSize">Size of the view.</param>
        void MouseUp(MouseButton button, Point location, Size viewSize);

        /// <summary>
        /// Sends a mouse move command to the remote PPC.
        /// </summary>
        /// <param name="location">The location.</param>
        /// <param name="viewSize">Size of the view.</param>
        void MouseMove(Point location, Size viewSize);

        /// <summary>
        /// Sends a mouse double click command to the remote PPC.
        /// </summary>
        /// <param name="button">The button.</param>
        /// <param name="location">The location.</param>
        /// <param name="viewSize">Size of the view.</param>
        void MouseDoubleClick(MouseButton button, Point location, Size viewSize);

        /// <summary>
        /// Send a mouse scroll command to the remote PPC.
        /// </summary>
        /// <param name="delta">The delta.</param>
        /// <param name="location">The location.</param>
        /// <param name="viewSize">Size of the view.</param>
        void MouseScroll(int delta, Point location, Size viewSize);

        /// <summary>
        /// Sends a touch down command to the remote PPC.
        /// </summary>
        /// <param name="location">The location.</param>
        /// <param name="viewSize">Size of the view.</param>
        void TouchDown(Point location, Size viewSize);

        /// <summary>
        /// Sends a touch move command to the remote PPC.
        /// </summary>
        /// <param name="deltaX">The delta x.</param>
        /// <param name="deltaY">The delta y.</param>
        /// <param name="viewSize">Size of the view.</param>
        void TouchMove(int deltaX, int deltaY, Size viewSize);

        /// <summary>
        /// Sends a touch up command to the remote PPC.
        /// </summary>
        void TouchUp();

        /// <summary>
        /// Sends a key down command to the remote PPC.
        /// </summary>
        /// <param name="key">The key.</param>
        /// <param name="ctrlDown">if set to <c>true</c> [control down].</param>
        /// <param name="shitDown">if set to <c>true</c> [shit down].</param>
        /// <param name="altDown">if set to <c>true</c> [alt down].</param>
        void KeyboardDown(Key key, bool ctrlDown, bool shitDown, bool altDown);

        /// <summary>
        /// Sends a key up command to the remote PPC.
        /// </summary>
        /// <param name="key">The key.</param>
        /// <param name="ctrlDown">if set to <c>true</c> [control down].</param>
        /// <param name="shitDown">if set to <c>true</c> [shit down].</param>
        /// <param name="altDown">if set to <c>true</c> [alt down].</param>
        void KeyboardUp(Key key, bool ctrlDown, bool shitDown, bool altDown);

        /// <summary>
        /// Sends the specified predefined remote desktop command.
        /// </summary>
        /// <param name="command">The command.</param>
        void SendCommand(RemoteDesktopCommand command);

        /// <summary>
        /// Sets the remote cursor visibility.
        /// </summary>
        /// <param name="visible">if set to <c>true</c> [visible].</param>
        void SetRemoteCursorVisibility(bool visible);

        /// <summary>
        /// Gets a single remote desktop screen-shot.
        /// </summary>
        /// <returns></returns>
        Task<RasterFrame> GetDesktopScreenShot();
    }
}