MARKUS

using Markus.Service.WcfClient.StationServiceTask;

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using Markus.Service.Extensions;

using Markus.Service.Helper;

using Markus.Service.StationController.Extensions;

namespace Markus.Service.StationController.ViewModel

{

    public class AliveViewModel :Mvvm.ToolKit.ViewModelBase

    {

        BackgroundWorker backgroundWorker;

        private System.Collections.ObjectModel.ObservableCollection<ConvertItem> aliveItems;

        private bool isLoading;

        public System.Collections.ObjectModel.ObservableCollection<ConvertItem> AliveItems

        {

            get => aliveItems; set

            {

                aliveItems = value;

                OnPropertyChanged(() => AliveItems);

            }

        }

        public bool IsLoading

        {

            get => isLoading; set

            {

                if (isLoading != value)

                {

                    isLoading = value;

                    OnPropertyChanged(() => IsLoading);

                }

            }

        }

        public AliveViewModel()

        {

        }

        // 진행률에 변화가 있을때 이벤트가 발생

        private void backgroundWorker_ProgressChanged(object sender, ProgressChangedEventArgs e)

        {

        }

        // 일이 모두 마쳤을때 수행되어야할 코드

        private void backgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)

        {

        }

        // BackgroundWorker에서 수행할 일을 정의.

        private async void backgroundWorker_DoWork(object sender, DoWorkEventArgs e)

        {

            while (IsAcitve)

            {

                System.Threading.Thread.Sleep(1000);

                try

                {

                    IsLoading = true;

                    List<ConvertItem> newitems = new List<ConvertItem>();

                    foreach (var client in App.StationClientList)

                    {

                        if (SimplePing(client.Endpoint.Address.ToString()))

                        {

                            var items = await client.AliveConvertListAsync();

                            newitems.AddRange(items);

                        }

                    }

                    if (AliveItems == null)

                    {

                        AliveItems = new System.Collections.ObjectModel.ObservableCollection<ConvertItem>();

                        foreach (var item in newitems)

                        {

                            AliveItems.Add(item);

                        }

                    }

                    else

                    {

                        /// 데이터 업데이트

                        newitems.ForEach(newitem =>

                        {

                            AliveItems.UpdateWhere(changeitem => ConvertItemEx.ChangeValues(changeitem, newitem), x => x.ProjectNumber == newitem.ProjectNumber && x.ConvertID == newitem.ConvertID);

                        });

                        // 추가

                        foreach (var item in newitems)

                        {

                            if (AliveItems.Count(x => x.ConvertID == item.ConvertID && x.ProjectNumber == item.ProjectNumber) == 0)

                            {

                                AliveItems.Add(item);

                            }

                        }

                        /// 삭제

                        for (int i = AliveItems.Count() -1; i > -1; --i)

                        {

                            var item = AliveItems[i];

                            if (newitems.Count(x => x.ConvertID == item.ConvertID && x.ProjectNumber == item.ProjectNumber) == 0)

                            {

                                AliveItems.RemoveAt(i);

                            }

                        }

                    }

                }

                catch (Exception ex)

                {

                }

            }

        }

        public static bool SimplePing(string uri)

        {

            bool result = false;

            try

            {

                using (System.Net.Http.HttpClient Client = new System.Net.Http.HttpClient())

                {

                    Client.Timeout = new TimeSpan(0, 0, 10);

                    System.Net.Http.HttpResponseMessage responseMessage = Client.GetAsync(uri).Result;

                    System.Net.HttpStatusCode StatusCode = responseMessage.StatusCode;

                    switch (StatusCode)

                    {

                        case System.Net.HttpStatusCode.Accepted:

                        case System.Net.HttpStatusCode.OK:

                            result = true;

                            break;

                    }

                }

            }

            catch (Exception)

            {

            }

            return result;

        }

        public override void Loaded()

        {

            base.Loaded();

            if (!IsDesignMode)

            {

                backgroundWorker = new BackgroundWorker();

                backgroundWorker.DoWork += backgroundWorker_DoWork;

                backgroundWorker.RunWorkerCompleted += backgroundWorker_RunWorkerCompleted;

                backgroundWorker.WorkerReportsProgress = false;

                backgroundWorker.ProgressChanged += new ProgressChangedEventHandler(backgroundWorker_ProgressChanged);

                backgroundWorker.RunWorkerAsync();

            }

        }

        public override void Closed()

        {

            if (backgroundWorker != null)

            {

                backgroundWorker.DoWork -= backgroundWorker_DoWork;

                backgroundWorker.RunWorkerCompleted -= backgroundWorker_RunWorkerCompleted;

                backgroundWorker.WorkerReportsProgress = false;

                backgroundWorker.ProgressChanged -= new ProgressChangedEventHandler(backgroundWorker_ProgressChanged);

                backgroundWorker.Dispose();

            }

            base.Closed();

        }

    }

}