using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Net;
using System.Reflection.Metadata;
 
using OpcLabs.EasyOpc.AlarmsAndEvents;
using OpcLabs.EasyOpc.AlarmsAndEvents.AddressSpace;
using OpcLabs.EasyOpc.AlarmsAndEvents.OperationModel;
using OpcLabs.EasyOpc.OperationModel;
 
namespace OPCAETest
{
    internal class Program
    {
        static void Main(string[] args)
        {
 
 
            // Instantiate the client object.
            var client = new EasyAEClient();
 
            AECategoryElementCollection categoryElements;
            try
            {
                categoryElements = client.QueryEventCategories("", "Matrikon.OPC.GDA.1");
            }
            catch (Exception Exception)
            {
                Console.WriteLine("*** Failure: {0}", Exception.InnerException.Message);
                return;
            }
            //catch (OpcException opcException)
            //{
            //    Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message);
            //    return;
            //}
 
            foreach (AECategoryElement categoryElement in categoryElements)
            {
                Debug.Assert(categoryElement != null);
 
                Console.WriteLine("Category {0}:", categoryElement);
                foreach (AEAttributeElement attributeElement in categoryElement.AttributeElements)
                {
                    Debug.Assert(attributeElement != null);
 
                    Console.WriteLine("    Information about attribute {0}:", attributeElement);
                    Console.WriteLine("        .AttributeId: {0}", attributeElement.AttributeId);
                    Console.WriteLine("        .Description: {0}", attributeElement.Description);
                    Console.WriteLine("        .DataType: {0}", attributeElement.DataType);
                }
            }
 
 
            var eventHandler = new EasyAENotificationEventHandler(aeClient_Notification);
            client.Notification += eventHandler;
 
            // Keep the application running
            Console.WriteLine("Press any key to exit...");
            Console.ReadKey();
        }
        // Notification event handler
        static void aeClient_Notification(object sender, EasyAENotificationEventArgs e)
        {
            if (!e.Succeeded)
            {
                Console.WriteLine("*** Failure: {0}", e.ErrorMessageBrief);
                return;
            }
            if (!e.Refresh && (!(e.EventData is null)))
            {
                // Display all received event attribute IDs and their corresponding values
                Console.WriteLine("Event attribute count: {0}", e.EventData.AttributeValues.Count);
                foreach (KeyValuePair<long, object> pair in e.EventData.AttributeValues)
                    Console.WriteLine("    {0}: {1}", pair.Key, pair.Value);
            }
        }
 
 
 
    }
}