namespace NiHaoRS
{


    public class UnsupportedClipboard
        : GenericClipboard

    {

        public UnsupportedClipboard()
        { }


        public override async System.Threading.Tasks.Task<string> GetClipboardContentAsync()
        {
            throw new System.NotSupportedException("UnsupportedClipboard.GetClipboardContentsAsync");
        }


        public override async System.Threading.Tasks.Task SetClipboardContentsAsync(string text)
        {
            throw new System.NotSupportedException("UnsupportedClipboard.SetClipboardContentsAsync");
        }


    }


    public partial class OS
    {
        public static readonly GenericClipboard Clipboard;


        static OS()
        {
            Clipboard = GenericClipboard.CreateInstance();
        }



    }



    public abstract class GenericClipboard

    {


        public abstract System.Threading.Tasks.Task<string> GetClipboardContentAsync();
        public abstract System.Threading.Tasks.Task SetClipboardContentsAsync(string text);


        public string Text
        {
            get
            {
                string retValue = null;

                Nito.AsyncEx.AsyncContext.Run(async delegate ()
                {
                    retValue = await this.GetClipboardContentAsync();
                });

                return retValue;
            }

            set
            {
                Nito.AsyncEx.AsyncContext.Run(async delegate ()
                {
                    await this.SetClipboardContentsAsync(value);
                });

            }
        }


        public virtual string GetClipboardContents()
        {
            // System.Threading.Thread thread = System.Threading.Thread.CurrentThread;
            // thread.IsBackground
            // thread.IsThreadPoolThread
            // System.Threading.SynchronizationContext.Current.

            return GetClipboardContentAsync().Result;
        } // End Function GetClipboardContents


        public virtual void SetClipboardContents(string text)
        {
            SetClipboardContentsAsync(text).Wait();
        } // End Function GetClipboardContents


        public static GenericClipboard CreateInstance()
        {
            // bool NativeEndianness = System.BitConverter.IsLittleEndian;

            if(System.Runtime.InteropServices.RuntimeInformation.IsOSPlatform(System.Runtime.InteropServices.OSPlatform.Windows))
                return new WindowsClipboard();

            if(System.Runtime.InteropServices.RuntimeInformation.IsOSPlatform(System.Runtime.InteropServices.OSPlatform.Linux))
                return new LinuxClipboard();

            if(System.Runtime.InteropServices.RuntimeInformation.IsOSPlatform(System.Runtime.InteropServices.OSPlatform.OSX))
                return new OsxClipboard();

            return new UnsupportedClipboard();
        }


    }



}