using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.ServiceModel;

using System.Collections;

namespace SharpDisplayInterface

{

    [ServiceContract(   CallbackContract = typeof(IDisplayServiceCallback),

                        SessionMode = SessionMode.Required)]

    public interface IDisplayService

    {

        /// <summary>

        /// Set the name of this client.

        /// Name is a convenient way to recognize your client.

        /// Naming you client is not mandatory.

        /// In the absence of a name the session ID is often used instead.

        /// </summary>

        /// <param name="aClientName"></param>

        [OperationContract(IsOneWay = true)]

        void SetName(string aClientName);

        /// <summary>

        /// Put the given text in the given field on your display.

        /// Fields are often just lines of text.

        /// </summary>

        /// <param name="aFieldIndex"></param>

        /// <param name="aText"></param>

        [OperationContract(IsOneWay = true)]

        void SetText(int aFieldIndex, string aText);

        /// <summary>

        /// Allows a client to set multiple text fields at once.

        /// First text in the list is set into field index 0.

        /// Last text in the list is set into field index N-1.

        /// </summary>

        /// <param name="aTexts"></param>

        [OperationContract(IsOneWay = true)]

        void SetTexts(System.Collections.Generic.IList<string> aTexts);

        /// <summary>

        /// Provides the number of clients currently connected

        /// </summary>

        /// <returns></returns>

        [OperationContract()]

        int ClientCount();

    }

    public interface IDisplayServiceCallback

    {

        [OperationContract(IsOneWay = true)]

        void OnConnected();

        /// <summary>

        /// Tell our client to close its connection.

        /// Notably sent when the server is shutting down.

        /// </summary>

        [OperationContract(IsOneWay = true)]

        void OnCloseOrder();

    }

}