using XKRS.UI.Model.Winform;
using Newtonsoft.Json;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using static DH.Commons.Enums.EnumHelper;
using DH.Commons.Enums;


namespace DHSoftware.Views
{ 
    
    public partial class FrmLog : UserControl
    {
        public FrmLog()
        {
            InitializeComponent();

            lvLog.ShowItemToolTips = true;

            this.Load += (s, e) =>
              {
                  _showLevels.Clear();
                  tsmiLogLevels.DropDownItems.Clear();
                  JsonConvert.DeserializeObject<List<dynamic>>(JsonConvert.SerializeObject(EnumHelper.GetEnumListByType(typeof(LogLevel)))).ForEach(d =>
                  {
                      LogLevel lvl = (LogLevel)((int)d.Value);
                      ToolStripMenuItem item = new ToolStripMenuItem(d.Desc.ToString());
                      item.CheckOnClick = true;
                      item.Checked = true;
                      item.Tag = lvl;
                      item.CheckedChanged += LevelItem_CheckedChanged;

                      item.BackColor = lvl.GetEnumSelectedColor();
                      item.ForeColor = lvl.GetEnumSelectedFontColor();
                      tsmiLogLevels.DropDownItems.Add(item);
                      _showLevels.Add(lvl);
                  });
              };
        }

        //public override void OnProcessUpdated()
        //{
           

        //    Invoke(new Action(() =>
        //    {
        //        _showDevice.Clear();
        //        tsmiLogSources.DropDownItems.Clear();
        //        ToolStripMenuItem processItem = new ToolStripMenuItem(SOURCE_PROCESS);
        //        processItem.CheckOnClick = true;
        //        processItem.Checked = true;
        //        processItem.CheckedChanged += SourceItem_CheckedChanged;
        //        tsmiLogSources.DropDownItems.Add(processItem);
        //        _showDevice.Add(SOURCE_PROCESS);

        //        Process.DeviceCollection.ForEach(d =>
        //        {
        //            ToolStripMenuItem item = new ToolStripMenuItem(d.Name);
        //            item.CheckOnClick = true;
        //            item.Checked = true;
        //            item.CheckedChanged += SourceItem_CheckedChanged;
        //            tsmiLogSources.DropDownItems.Add(item);
        //            _showDevice.Add(d.Name);
        //        });
        //    }));
        //}

        private void LevelItem_CheckedChanged(object sender, EventArgs e)
        {
            _showLevels.Clear();
            foreach (ToolStripMenuItem item in tsmiLogLevels.DropDownItems)
            {
                if (item.Checked)
                {
                    LogLevel lv = (LogLevel)Convert.ToInt32(item.Tag);
                    _showLevels.Add(lv);
                }
            }

            RefreshLogs();
        }

        private void SourceItem_CheckedChanged(object sender, EventArgs e)
        {
            _showDevice.Clear();
            foreach (ToolStripMenuItem item in tsmiLogSources.DropDownItems)
            {
                if (item.Checked)
                {
                    _showDevice.Add(item.Text);
                }
            }
            RefreshLogs();
        }
        //public TaskFactory _taskFactory = new TaskFactory(TaskCreationOptions.LongRunning, TaskContinuationOptions.LongRunning);
        readonly ConcurrentQueue<LogMsg> _logQueue = new ConcurrentQueue<LogMsg>();
        Task _logTask = null;
        static readonly object _logLock = new object();

        List<LogMsg> _logBuffer = new List<LogMsg>();
        List<LogLevel> _showLevels = new List<LogLevel>();
        List<string> _showDevice = new List<string>();
        const string SOURCE_PROCESS = "流程";
        const int LOG_NUM_LIMIT = 20;

        public void LogDisplay(LogMsg msg)
        {
            _logQueue.Enqueue(msg);

            lock (_logLock)
            {
                if (_logTask == null)
                {
                    _logTask = Task.Run(async () =>
                    {
                        while (true)
                        {
                            try
                            {
                                Invoke(new Action(() =>
                        {
                            bool isNeedScroll = false;
                            while (_logQueue.TryDequeue(out LogMsg log))
                            {
                                _logBuffer.Add(log);

                                if (_showLevels.Contains(log.LogLevel) && (_showDevice.Count == 0 || (string.IsNullOrWhiteSpace(log.MsgSource) && _showDevice.Contains(SOURCE_PROCESS)) || _showDevice.Contains(log.MsgSource)))
                                {
                                    isNeedScroll = true;

                                    ListViewItem item = new ListViewItem($"{log.LogTime.ToString("HH:mm:ss.fff")}");
                                    item.SubItems.Add($"{log.MsgSource}[{log.ThreadId}]");
                                    item.SubItems.Add(log.Msg);

                                    item.ToolTipText = log.Msg;
                                    item.ForeColor = log.LogLevel.GetEnumSelectedFontColor();
                                    item.BackColor = log.LogLevel.GetEnumSelectedColor();

                                    lvLog.Items.Add(item);
                                }
                            }

                            if (_logBuffer.Count > LOG_NUM_LIMIT * 2)
                            {
                                _logBuffer = _logBuffer.Skip(_logBuffer.Count - LOG_NUM_LIMIT).ToList();
                                RefreshLogs();
                                isNeedScroll = true;
                            }

                            if (isNeedScroll && lvLog.Items.Count > 0)
                            {
                                RefreshLvLayout();
                            }
                        }));
                            }
                            catch (Exception ex)
                            {
                            }

                            await Task.Delay(2000);
                        }
                    });
                }
            }
        }

        private void RefreshLogs()
        {
            lvLog.Items.Clear();

            _logBuffer.ForEach(log =>
            {
                if (_showLevels.Contains(log.LogLevel) && ((string.IsNullOrWhiteSpace(log.MsgSource) && _showDevice.Contains(SOURCE_PROCESS)) || _showDevice.Contains(log.MsgSource)))
                {
                    ListViewItem item = new ListViewItem($"{log.LogTime.ToString("HH:mm:ss.fff")}");
                    item.SubItems.Add($"{log.MsgSource}[{log.ThreadId}]");
                    item.SubItems.Add(log.Msg);

                    item.ToolTipText = log.Msg;
                    item.ForeColor = log.LogLevel.GetEnumSelectedFontColor();
                    item.BackColor = log.LogLevel.GetEnumSelectedColor();

                    lvLog.Items.Add(item);
                }
            });

            RefreshLvLayout();
        }

        private void lvLog_SizeChanged(object sender, EventArgs e)
        {
            RefreshLvLayout();
        }

        int width_1stCol = 80;

        public event Action<LogMsg> OnLogMsgOutput;

        private void RefreshLvLayout()
        {
            if (lvLog.Columns.Count <= 0)
                return;

            lvLog.Columns[0].Width = width_1stCol;
            if (lvLog.Width <= lvLog.Height)
            {
                lvLog.Columns[1].Width = 0;
            }
            else
            {
                lvLog.Columns[1].AutoResize(ColumnHeaderAutoResizeStyle.ColumnContent);
            }
            lvLog.Columns[2].Width = lvLog.Width - width_1stCol - lvLog.Columns[1].Width - 10;

            if (lvLog.Items.Count > 0)
                lvLog.EnsureVisible(lvLog.Items.Count - 1);
        }

        private void tsmiClearLog_Click(object sender, EventArgs e)
        {
            lvLog.Items.Clear();
        }

        private void tsmiClearLog2_Click(object sender, EventArgs e)
        {
            lvLog.Items.Clear();
        }
    }
}