Shaker/Avalonia/ShakerApp/ViewModels/DataReview/DataReviewViewModel.cs

using Avalonia.Controls.Documents;
using Avalonia.Platform;
using Shaker.Models;
using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;

namespace ShakerApp.ViewModels
{
    internal class DataReviewViewModel:DisplayViewModelBase<IModel>
    {
        private Dictionary<MainPageType, IDataReviewItem> DataReviews = new Dictionary<MainPageType, IDataReviewItem>();
        [AllowNull]
        private IDataReviewItem currentDataReview;

        public IDataReviewItem GetDataReview(string path)
        {
            var type = GetMainPageType(path);
            return DataReviews[type];
        }
        public static MainPageType GetMainPageType(string path)
        {
            try
            {
                var tdmsfile = TDMS.TDMSDataBuilder.OpenExisting(path);
                if(tdmsfile!=null)
                {
                    tdmsfile.TryGetProperty<string>(nameof(MainPageViewModel.MainPageType), out var type);
                    tdmsfile.Close();
                    return Enum.Parse<MainPageType>(type);
                }
            }
            catch
            {

            }
            return MainPageType.StartPage;
        }
        private DataReviewViewModel()
        {
            DataReviews[MainPageType.StartPage] = StartPageDataReviewViewModel.Instance;
            DataReviews[MainPageType.RandomPage] = RandomDataReviewViewModel.Instance;
            DataReviews[MainPageType.SinePage] = SineDataReviewViewModel.Instance;
            DataReviews[MainPageType.OutSignal] = OutSignalDataReviewViewModel.Instance;
            CurrentDataReview = DataReviews[MainPageType.StartPage];
            Content = typeof(Views.DataReviewView);
        }
        static DataReviewViewModel()
        {

        }
        public IDataReviewItem CurrentDataReview { get => currentDataReview; set =>SetProperty(ref currentDataReview , value); }
        public static DataReviewViewModel Instance { get; } = new DataReviewViewModel();
        public void OpenFile(string path)
        {
            CurrentDataReview?.CloseFile();
            MainPageType maintype = MainPageType.StartPage;
            try
            {
                var tdmsfile = TDMS.TDMSDataBuilder.OpenExisting(path);
                if (tdmsfile != null)
                {
                    if (tdmsfile.IsOpen)
                    {
                        tdmsfile.TryGetProperty<string>(nameof(MainPageViewModel.MainPageType), out var type);
                        if(string.IsNullOrEmpty(type))
                        {
                            tdmsfile?.Close();
                            CurrentDataReview = DataReviews[MainPageType.StartPage];
                            return;
                        }
                        maintype = Enum.Parse<MainPageType>(type);
                        CurrentDataReview = DataReviews[maintype];
                        CurrentDataReview.InitData(tdmsfile);
                        return;
                    }
                    else
                    {
                        tdmsfile?.Close();
                    }
                }
            }
            catch
            {

            }
            CurrentDataReview = DataReviews[MainPageType.StartPage];
        }
        public void CloseFile()
        {
            CurrentDataReview?.CloseFile();
            CurrentDataReview = DataReviews[MainPageType.StartPage];
        }
    }
}