using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

using C4IT.API.Contracts;
using C4IT.Logging;

using C4IT_CustomerPanel.libs;
using static C4IT.Logging.cLogManager;

namespace C4IT_CustomerPanel.UserControls
{
    /// <summary>
    /// Interaction logic for Incidents.xaml
    /// </summary>
    public partial class Incidents : UserControl
    {
        public readonly StackPanel _incidentHead = new StackPanel();
        public Dictionary<Guid, IncidentListItem> ticketCollection = new Dictionary<Guid, IncidentListItem>();
        public List<Guid> unreadTickets = new List<Guid>();

        private MainWindow mainWindow;

        public Incidents()
        {
            mainWindow = MainWindow.MainInstance;
            InitializeComponent();
        }

        public void InitializeContracts()
        {
            try
            {
                unreadTickets = ConfigClass.LoadFromJson<List<Guid>>("UnreadTickets", "run");
            }
            catch { }

            if (unreadTickets == null)
                unreadTickets = new List<Guid>();
        }

        private void OnCreateNewTicketClicked(object sender, RoutedEventArgs e)
        {
            if (mainWindow.ConfigSettings.GetConfig()._createNewTicketDirectLink != String.Empty)
            {
                Process.Start(mainWindow.ConfigSettings.GetConfig()._createNewTicketDirectLink);
            }
            else
            {
                Process.Start(mainWindow.ConfigSettings.GetMatrixServer(true) + "/wm");
            }
        }

        private void ReadAll_PreviewMouseDown(object sender, MouseButtonEventArgs e)
        {
            foreach (KeyValuePair<Guid, IncidentListItem> item in ticketCollection)
            {
                item.Value.IsUnread = false;
            }
            CheckAllTicketsRead(null, null);
        }

        public void CheckAllTicketsRead(object sender, MouseButtonEventArgs e)
        {
            if (e != null)
                e.Handled = true;
            if (sender == null)
            {
                unreadTickets.Clear();
                lock (mainWindow.NewContentSignals)
                {
                    mainWindow.NewContentSignals[enumMainFunctions.Incident] = false;
                    mainWindow._isRedDotActive = false;
                }
                mainWindow.UpdateNewContentSignals();
            }
            else
            {
                Boolean allRead = true;
                IncidentListItem incItem = null;
                if (sender is Image)
                {
                    Image item = (Image)sender;
                    incItem = (IncidentListItem)item.DataContext;

                }
                else if (sender is IncidentListItem)
                {
                    incItem = (IncidentListItem)sender;

                }

                if (incItem != null)
                {
                    incItem.IsUnread = false;
                    unreadTickets.Remove(incItem.getEOID());

                    foreach (KeyValuePair<Guid, IncidentListItem> inc in ticketCollection)
                    {
                        if (inc.Value.IsUnread)
                        {
                            allRead = false;
                            break;
                        }
                    }
                    if (allRead)
                    {
                        unreadTickets.Clear();
                        lock (mainWindow.NewContentSignals)
                        {
                            mainWindow.NewContentSignals[enumMainFunctions.Incident] = false;
                            mainWindow._isRedDotActive = false;

                        }
                        mainWindow.UpdateNewContentSignals();
                    }
                }
            }

            ConfigClass.SaveAsJson("UnreadTickets", unreadTickets, "run");
        }

        public void ProcessNewTickets(List<Ticket> _tickets)
        {
            var newLastUpdate = mainWindow.lastUpdate;

            try
            {
                if (_tickets != null && _tickets.Count > 0)
                {
                    NoIncident.Visibility = Visibility.Hidden;

                    foreach (Ticket ti in _tickets)
                    {
                        if (ti._objectID == Guid.Empty)
                            continue;

                        if (!ticketCollection.TryGetValue(ti._objectID, out var item))
                        {
                            item = new IncidentListItem(ti)
                            {
                                Margin = new Thickness(2, 10, 2, 0),
                            };
                            item.MouseLeftButtonDown += OnTicketClicked;
                            item.signal.PreviewMouseDown += CheckAllTicketsRead;
                            ticketCollection.Add(ti._objectID, item);
                        }

                        item.TicketItem = ti;

                        if (ti._lastJournalEntryAction is int jText
                            && staticLibs.JournalActivityAction.TryGetValue(jText, out var actionInfo)
                            && actionInfo.visible)
                        {
                            item.LastJournalEntryActionText = actionInfo.JournalText;
                        }
                        else
                        {
                            item.LastJournalEntryActionText = string.Empty;
                        }

                        var ticketUpdateDate = ti._lastJournalEntryDate > DateTime.MinValue
                            ? ti._lastJournalEntryDate
                            : ti._createdDate;

                        if (ticketUpdateDate > mainWindow.lastUpdate)
                        {
                            if (!unreadTickets.Contains(ti._objectID))
                                unreadTickets.Add(ti._objectID);
                            item.IsUnread = true;

                            mainWindow.NewContentSignalsInfo[enumMainFunctions.Incident] =
                                Properties.Resources.NewTicketInfoMessage;

                            if (ticketUpdateDate > newLastUpdate)
                                newLastUpdate = ticketUpdateDate;
                        }
                        else
                        {
                            item.IsUnread = unreadTickets.Contains(ti._objectID);
                        }

                        item.TicketType = ti._ticketType;
                    }
                    var incomingIds = new HashSet<Guid>(_tickets.Select(t => t._objectID));
                    var keysToRemove = ticketCollection.Keys
                        .Where(id => !incomingIds.Contains(id))
                        .ToList();
                    foreach (var id in keysToRemove)
                    {
                        ticketCollection.Remove(id);
                    }
                }
                else
                {
                    ticketCollection.Clear();
                    NoIncident.Visibility = Visibility.Visible;
                }
            }
            catch (Exception e)
            {
                cLogManager.LogException(e);
            }

            if (newLastUpdate > mainWindow.lastUpdate)
            {
                mainWindow.lastUpdate = newLastUpdate;
                ConfigClass.SaveAsJson("LastTicketUpdate", mainWindow.lastUpdate, "run");
            }

            ConfigClass.SaveAsJson("UnreadTickets", unreadTickets, "run");

            ticketCollection = ticketCollection
                .OrderByDescending(x => x.Value.TicketItem._lastJournalEntryDate)
                .ThenByDescending(x => x.Value.TicketItem._createdDate)
                .ToDictionary(x => x.Key, x => x.Value);

            FillIncidentGrid();
        }

        public void FillIncidentGrid()
        {
            try
            {
                var setNewContent = false;

                _incidentHead.Children.Clear();
                foreach (var item in ticketCollection)
                {
                    if (item.Value.IsUnread)
                        setNewContent = true;
                    var control = item.Value;
                    control.TicketItem = control.TicketItem;  // löst im Setter alle OnPropertyChanged aus
                    _incidentHead.Children.Add(control);
                }

                CanvasIncident.Content = null;

                CanvasIncident.Content = _incidentHead;

                if (setNewContent)
                {
                    lock (mainWindow.NewContentSignals)
                        mainWindow.NewContentSignals[enumMainFunctions.Incident] = true;
                }
            }
            catch (Exception e)
            {
                LogException(e);
            }
        }

        public void OnTicketClicked(object sender, EventArgs e)
        {
            if (sender is FrameworkElement fe && fe.DataContext is IncidentListItem item)
            {
                if (!item.TicketItem._objectID.Equals(Guid.Empty))
                {
                    try
                    {
                        string startParam;

                        if (mainWindow.ConfigSettings.GetConfig()._isUUX)
                        {
                            startParam = string.Format("{0}/wm/app-SelfServicePortal/notSet/preview-object/{1}/{2}/0/",
                                mainWindow.ConfigSettings.GetMatrixServer(true),
                                item.TicketItem._sysEntity,
                                item.TicketItem._objectID.ToString());
                        }
                        else
                        {
                            startParam = string.Format("{0}/SPS/Portal/Pages/Support/IncidentDetails.aspx?IncidentID={1}&ConsiderArchivedData=0",
                                mainWindow.ConfigSettings.GetMatrixServer(true),
                                item.TicketItem._objectID.ToString());
                        }

                        Process.Start(startParam);
                        CheckAllTicketsRead(item, null);
                    }
                    catch (Exception)
                    {
                        // Not yet implemented
                    }
                }
            }
        }


    }
}