//

// Define a public API for both SharpDisplay client and server to use.

//

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.ServiceModel;

using System.Collections;

using System.Drawing;

using System.Runtime.Serialization;

namespace SharpDisplay

{

    /// <summary>

    /// TextField can be send to our server to be displayed on the screen.

    /// </summary>

    [DataContract]

    public class TextField

    {

        public TextField()

        {

            Index = 0;

            Text = "";

            Alignment = ContentAlignment.MiddleLeft;

        }

        public TextField(int aIndex, string aText = "", ContentAlignment aAlignment = ContentAlignment.MiddleLeft)

        {

            Index = aIndex;

            Text = aText;

            Alignment = aAlignment;

        }

        [DataMember]

        public int Index { get; set; }

        [DataMember]

        public string Text { get; set; }

        [DataMember]

        public ContentAlignment Alignment { get; set; }

    }

    /// <summary>

    /// Define our SharpDisplay service.

    /// Clients and servers must implement it to communicate with one another.

    /// Through this service clients can send requests to a server.

    /// Through this service a server session can receive requests from a client.

    /// </summary>

    [ServiceContract(   CallbackContract = typeof(ICallback), SessionMode = SessionMode.Required)]

    public interface IService

    {

        /// <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="aTextFieldIndex"></param>

        [OperationContract(IsOneWay = true)]

        void SetText(TextField aTextField);

        /// <summary>

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

        /// </summary>

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

        [OperationContract(IsOneWay = true)]

        void SetTexts(System.Collections.Generic.IList<TextField> aTextFields);

        /// <summary>

        /// Provides the number of clients currently connected

        /// </summary>

        /// <returns></returns>

        [OperationContract()]

        int ClientCount();

    }

    /// <summary>

    /// SharDisplay callback provides a means for a server to notify its clients.

    /// </summary>

    public interface ICallback

    {

        [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();

    }

}