// Copyright (c) 2017- schick Informatik
// Description: Overview of messages currently in transmission
// 8/3/21: Diese Klasse wird wieder (aus der Verwendung) entfernt, da sie
// nach RS mit CH keinen Mehrwert im Workflow bringt.
// 

using bsmd.database;
using ENI2.Controls;
using System;
using System.Collections.Generic;
using System.Timers;
using System.Windows;

namespace ENI2.EditControls
{
    /// <summary>
    /// Interaction logic for MessageSendStatusDialog.xaml
    /// </summary>
    public partial class MessageSendStatusDialog : StatusWindowBase
    {
        private readonly Timer bgTimer;
        private List<Message> _messages = new List<Message>();
        private MessageCore _messageCore;

        public MessageSendStatusDialog(MessageCore core)
        {
            InitializeComponent();
            this.bgTimer = new Timer();
            _messageCore = core;

            this.bgTimer.Elapsed += BgTimer_Elapsed;
            this.bgTimer.AutoReset = true;
            this.bgTimer.Interval = Properties.Settings.Default.changeTimerTimeout;
        }

        public void AddMessages(List<Message> messages)
        {
            if (!messages.IsNullOrEmpty())
            {
                foreach (Message newMessage in messages)
                {
                    if (!_messages.Contains(newMessage))
                        _messages.Add(newMessage);
                }
                this.RefreshGrid();
            }
        }

        public event Action SendComplete;

        private void RefreshGrid()
        {
            this.Dispatcher.Invoke(() =>
            {
                Util.UIHelper.SetMessageIcons(_messages);
                this.dataGridMessages.ItemsSource = null;
                this.dataGridMessages.ItemsSource = _messages;                
            });
        }

        private void BgTimer_Elapsed(object sender, ElapsedEventArgs e)
        {
            // check if a message has changed its status
            bool updatedMessage = false;
            bool finished = true;
            System.Diagnostics.Trace.WriteLine(string.Format("Watching {0} messages.", _messages.Count));

            for (int i = 0; i < _messages.Count; i++)
            {
                Message testMessage = (Message) DBManager.Instance.GetMessageById(_messages[i].Id.Value);
                
                if(testMessage.Changed > _messages[i].Changed)
                {
                    _messages[i] = testMessage; // replace Message in Array with "newer" Message
                    updatedMessage = true;
                    System.Diagnostics.Trace.WriteLine(string.Format("Updating {0} To status {1}", testMessage.Id, testMessage.InternalStatus));
                }

                finished &= (testMessage.InternalStatus != Message.BSMDStatus.TOSEND);
            }

            if (finished)
            {
                _messageCore.IsHighlighted = true;
                this.OnSendComplete();
            }

            if(updatedMessage)
            {
                this.RefreshGrid();
            }
        }

        private void StatusWindowBase_Loaded(object sender, RoutedEventArgs e)
        {            
            this.bgTimer.Start();
            this.dataGridMessages.DataContext = _messages;            
        }

        protected void OnSendComplete()
        {
            this.SendComplete?.Invoke();
        }

        private void StatusWindowBase_Closing(object sender, System.ComponentModel.CancelEventArgs e)
        {
            this.bgTimer.Stop();
            this.bgTimer.Dispose();
        }
    }
}