// Copyright (c) 2020 LG Electronics Inc.
// SPDX-License-Identifier: LicenseRef-LGE-Proprietary

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;
using Aurora.Api;
using Microsoft.Win32;
using Aurora;
using Aurora.View;

namespace AuroraUIComponent.Views
{
    public class TactTimeViewModel : NotifyPropertyChangedBase
    {
        private readonly Logger _log;
        public ObservableCollection<string> Files1 { get; set; }
        public string FilePath1 { get; set; }
        public ObservableCollection<string> Files2 { get; set; }
        public string FilePath2 { get; set; }
        private List<LogItemCase> statDataOri = new List<LogItemCase>();
        public ObservableCollection<LogItemCase> StatData { get; set; } = new ObservableCollection<LogItemCase>();
        
        private LogItemCase selStatData;
        public LogItemCase SelStatData { get => selStatData; set {
                SetProperty(ref selStatData, value);
                UserVM?.UpdateData(value);
            }
        }

        private TactData _tactData = new TactData();
        public IUser<LogItemCase> UserVM { get; set; }

        public TactTimeViewModel(IAuroraEnvironment env)
        {
            _log = new Logger("TactTimeView");
            Files1 = new ObservableCollection<string>();
            Files2 = new ObservableCollection<string>();


            ICmdAddLogFiles_1 = new DelegateCommand(AddLogFiles1);
            ICmdAddLogFiles_2 = new DelegateCommand(AddLogFiles2);
            CmdClearTable = new DelegateCommand(ClearTable);
            CmdStart = new DelegateCommand(Start);
            CmdClear = new DelegateCommand(Clear);
            CmdFilter = new DelegateCommand(Filter);
            //
        }

        private void Filter(object obj)
        {
            if (string.IsNullOrEmpty(SeqFileter) == false) {
                var lowStr = SeqFileter.ToLower();
                StatData = new ObservableCollection<LogItemCase>(statDataOri.Where(x => x.Name.ToLower().Contains(lowStr)));
            } else {
                StatData = new ObservableCollection<LogItemCase>(statDataOri);
            }
            NotifyPropertyChanged("StatData");
        }

        private void Clear(object obj)
        {
            _tactData.ClearTable();
            UpdateUI();
        }

        private async void Start(object obj)
        {
            await Task.Run(() => {
                try
                {
                    if (SelectTact1)
                    {
                        DateTime? st = null;
                        DateTime? et = null;
                        if (UseStartTime1) { st = StartTime1; }
                        if (UseEndTime1) { et = EndTime1; }
                        if (IsFromTact1)
                        {
                            StartFromTact(true, st, et);
                        }
                        else
                        {
                            StartFromFile(true, st, et);
                        }
                    }
                    if (selectTact2)
                    {
                        DateTime? st = null;
                        DateTime? et = null;
                        if (UseStartTime2) { st = StartTime2; }
                        if (UseEndTime2) { et = EndTime2; }
                        if (IsFromTact2)
                        {
                            StartFromTact(false, st, et);
                        }
                        else
                        {
                            StartFromFile(false, st, et);
                        }
                    }
                    UpdateUI();
                }
                catch (Exception ex)
                {
                    _log.E(ex.Message);
                }
            });
        }

        private void StartFromFile(bool isFirst, DateTime? st, DateTime? et)
        {
            if (isFirst)
            {
                _tactData.Start(Files1.ToList(), FilePath1, SearchStr, Min1, CaseType.Case1, st, et);
            }
            else
            {
                _tactData.Start(Files2.ToList(), FilePath2, SearchStr, Min2, CaseType.Case2, st, et);
            }
        }

        private void StartFromTact(bool isFirst, DateTime? st, DateTime? et)
        {
            
        }

        private void ClearTable(object obj)
        {
            _tactData.ClearTable();
            UpdateUI();
        }

        private void UpdateUI()
        {
            statDataOri = _tactData.GetLogItems();
            StatData = new ObservableCollection<LogItemCase>(statDataOri);
            NotifyPropertyChanged("StatData");

            StartTime1 = _tactData.StartTime1;
            EndTime1 = _tactData.EndTime1;
            StartTime2 = _tactData.StartTime2;
            EndTime2 = _tactData.EndTime2;
        }

        private void AddLogFiles1(object obj)
        {
            AddFile(true);
        }
        private void AddLogFiles2(object obj)
        {
            AddFile(false);
        }

        private void AddFile(bool IsFirst)
        {
            FileDialog fd = new OpenFileDialog()
            {
                Multiselect = true,
            };
            var res = fd.ShowDialog(Application.Current.MainWindow);
            if (res == true && fd.FileNames.Length != 0)
            {
                if (IsFirst)
                {
                    FilePath1 = Path.GetDirectoryName(fd.FileNames.First());
                    Files1.Clear();
                    foreach (var fName in fd.FileNames)
                    {
                        Files1.Add(Path.GetFileName(fName));
                    }
                }
                else
                {
                    FilePath2 = Path.GetDirectoryName(fd.FileNames.First());
                    Files2.Clear();
                    foreach (var fName in fd.FileNames)
                    {
                        Files2.Add(Path.GetFileName(fName));
                    }
                }
            }
        }

        internal void KeyDown(Key key)
        {
            Filter(null);
        }

        public ICommand ICmdAddLogFiles_1 { get; }
        public ICommand ICmdAddLogFiles_2 { get; }
        public ICommand CmdClearTable { get; }
        public ICommand CmdStart { get; }
        public ICommand CmdClear { get; }
        public ICommand CmdFilter { get; }
        //


        private bool selectTact1 = true;
        public bool SelectTact1 { get => selectTact1; set => SetProperty(ref selectTact1, value); }
        private double min1;
        public double Min1 { get => min1; set => SetProperty(ref min1, value); }

        private double max1;
        public double Max1 { get => max1; set => SetProperty(ref max1, value); }

        private bool selectTact2 = true;
        public bool SelectTact2 { get => selectTact2; set => SetProperty(ref selectTact2, value); }

        private double min2;
        public double Min2 { get => min2; set => SetProperty(ref min2, value); }

        private double max2;
        public double Max2 { get => max2; set => SetProperty(ref max2, value); }

        private string searchStr = "\\[END\\]";

        public string SearchStr { get => searchStr; set => SetProperty(ref searchStr, value); }

        private bool isFromTact1 = true;
        public bool IsFromTact1 { get => isFromTact1; set => SetProperty(ref isFromTact1, value); }

        private bool isFromFile1;
        public bool IsFromFile1 { get => isFromFile1; set => SetProperty(ref isFromFile1, value); }

        private bool isFromTact2 = true;
        public bool IsFromTact2 { get => isFromTact2; set => SetProperty(ref isFromTact2, value); }

        private bool isFromFile2;
        public bool IsFromFile2 { get => isFromFile2; set => SetProperty(ref isFromFile2, value); }

        private DateTime startTime1;
        public DateTime StartTime1 { get => startTime1; set => SetProperty(ref startTime1, value); }
        private DateTime startTime2;
        public DateTime StartTime2 { get => startTime2; set => SetProperty(ref startTime2, value); }
        
        private DateTime endTime1;
        public DateTime EndTime1 { get => endTime1; set => SetProperty(ref endTime1, value); }
        private DateTime endTime2;
        public DateTime EndTime2 { get => startTime2; set => SetProperty(ref startTime2, value); }

        private bool useStartTime1;
        public bool UseStartTime1 { get => useStartTime1; set => SetProperty(ref useStartTime1, value); }
        private bool useEndTime1;
        public bool UseEndTime1 { get => useEndTime1; set => SetProperty(ref useEndTime1, value); }
        private bool useStartTime2;
        public bool UseStartTime2 { get => useStartTime2; set => SetProperty(ref useStartTime2, value); }
        private bool useEndTime2;
        public bool UseEndTime2 { get => useEndTime2; set => SetProperty(ref useEndTime2, value); }

        private string seqFileter;
        public string SeqFileter { get => seqFileter; set => SetProperty(ref seqFileter, value); }
    }

    public interface IUser<T>
    {
        void UpdateData(T data);
    }
}