using System.IO;
using System.Windows;
using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Messaging;
using Livia.Models;
using Livia.Utility;
using Livia.Utility.DependencyInjection;
using Livia.ViewModels;
using Microsoft.Extensions.DependencyInjection;

namespace CereFlow.ViewModels;

public class CereFlowControlViewModel : ObservableRecipient, ILiviaControlViewModel, IRecipient<DataLoadedMessage>, IRecipient<PerfusionDataGridChangeParameterMessage>
{
    public ImageRotationViewerControlViewModel BrainLobesImageRotationViewerControlViewModel { get; }
    public ImageRotationViewerControlViewModel LimbicSystemImageRotationViewerControlViewModel { get; }
    public PerfusionDataGridGroupControlViewModel PerfusionDataGridGroupViewModel { get; }

    public RoiSummaryControlViewModel LeftAnteriorRoiSummaryControlViewModel { get; }
    public RoiSummaryControlViewModel RightAnteriorRoiSummaryControlViewModel { get; }
    public RoiSummaryControlViewModel LeftAttRoiSummaryControlViewModel { get; }
    public RoiSummaryControlViewModel RightAttRoiSummaryControlViewModel { get; }
    public RoiSummaryControlViewModel LeftAcbvRoiSummaryControlViewModel { get; }
    public RoiSummaryControlViewModel RightAcbvRoiSummaryControlViewModel { get; }

    public MosaicImageGroupControlViewModel MosaicImageGroupViewModel { get; }
    //TODO::temp fix I do not like this
    public bool AttTabVisible { get => _attTabVisible; set => SetProperty(ref _attTabVisible, value); }
    public IDataBlockLoader DataBlockLoader { get; }
    public int RoiTabSelectedIndex { get => _roiTabSelectedIndex; set => SetProperty(ref _roiTabSelectedIndex, value); }

    private int _roiTabSelectedIndex;
    private bool _attTabVisible = true;

    public CereFlowControlViewModel(IDataBlockLoader dataBlockLoader)
    {
        WeakReferenceMessenger.Default.RegisterAll(this);
        DataBlockLoader = dataBlockLoader;

        BrainLobesImageRotationViewerControlViewModel = ActivatorUtilities.CreateInstance<ImageRotationViewerControlViewModel>(ServiceProviderFactory.ServiceProvider);
        BrainLobesImageRotationViewerControlViewModel.DisplayName = (string)Application.Current.TryFindResource("BrainLobesRotationViewerName");
        BrainLobesImageRotationViewerControlViewModel.AtlasMaskLoadPath = @"atlas\AnImage_BrainLobes\mask";
        BrainLobesImageRotationViewerControlViewModel.StructLoadPath = "structure";
        BrainLobesImageRotationViewerControlViewModel.StructDataType = ImageRotationViewerDataType.Dicom2D;
        BrainLobesImageRotationViewerControlViewModel.AtlasId = "AnImage_BrainLobes";
        BrainLobesImageRotationViewerControlViewModel.ImageIndexSyncKey = "structure";
        dataBlockLoader.AddViewModel(BrainLobesImageRotationViewerControlViewModel);

        LimbicSystemImageRotationViewerControlViewModel = ActivatorUtilities.CreateInstance<ImageRotationViewerControlViewModel>(ServiceProviderFactory.ServiceProvider);
        LimbicSystemImageRotationViewerControlViewModel.DisplayName = (string)Application.Current.TryFindResource("LimbicSystemRotationViewerName");
        LimbicSystemImageRotationViewerControlViewModel.AtlasMaskLoadPath = @"atlas\LimbicSystem\mask";
        LimbicSystemImageRotationViewerControlViewModel.StructLoadPath = "structure";
        LimbicSystemImageRotationViewerControlViewModel.StructDataType = ImageRotationViewerDataType.Dicom2D;
        LimbicSystemImageRotationViewerControlViewModel.AtlasId = "LimbicSystem";
        LimbicSystemImageRotationViewerControlViewModel.ImageIndexSyncKey = "structure";
        dataBlockLoader.AddViewModel(LimbicSystemImageRotationViewerControlViewModel);

        PerfusionDataGridControlViewModel cerebrumCerebellumPerfusionDataGridControlViewModel = ActivatorUtilities.CreateInstance<PerfusionDataGridControlViewModel>(ServiceProviderFactory.ServiceProvider);
        cerebrumCerebellumPerfusionDataGridControlViewModel.LoadPath = Path.Combine("atlas", "AnImage_CerebrumCerebellum");
        cerebrumCerebellumPerfusionDataGridControlViewModel.GridTabName = (string)Application.Current.TryFindResource("CerebrumCerebellumPerfusionDataGridName");

        PerfusionDataGridControlViewModel brainLobesPerfusionDataGridControlViewModel = ActivatorUtilities.CreateInstance<PerfusionDataGridControlViewModel>(ServiceProviderFactory.ServiceProvider);
        brainLobesPerfusionDataGridControlViewModel.LoadPath = Path.Combine("atlas", "AnImage_BrainLobes");
        brainLobesPerfusionDataGridControlViewModel.GridTabName = (string)Application.Current.TryFindResource("BrainLobesPerfusionDataGridName");

        PerfusionDataGridControlViewModel limbicSystemPerfusionDataGridControlViewModel = ActivatorUtilities.CreateInstance<PerfusionDataGridControlViewModel>(ServiceProviderFactory.ServiceProvider);
        limbicSystemPerfusionDataGridControlViewModel.LoadPath = Path.Combine("atlas", "LimbicSystem");
        limbicSystemPerfusionDataGridControlViewModel.GridTabName = (string)Application.Current.TryFindResource("LimbicSystemPerfusionDataGridName");

        PerfusionDataGridGroupViewModel = ActivatorUtilities.CreateInstance<PerfusionDataGridGroupControlViewModel>(ServiceProviderFactory.ServiceProvider);
        PerfusionDataGridGroupViewModel.PerfusionDataGridViewModelCollection.Add(cerebrumCerebellumPerfusionDataGridControlViewModel);
        PerfusionDataGridGroupViewModel.PerfusionDataGridViewModelCollection.Add(brainLobesPerfusionDataGridControlViewModel);
        PerfusionDataGridGroupViewModel.PerfusionDataGridViewModelCollection.Add(limbicSystemPerfusionDataGridControlViewModel);
        dataBlockLoader.AddViewModel(PerfusionDataGridGroupViewModel);

        LeftAnteriorRoiSummaryControlViewModel = ActivatorUtilities.CreateInstance<RoiSummaryControlViewModel>(ServiceProviderFactory.ServiceProvider);
        LeftAnteriorRoiSummaryControlViewModel.LoadPath = Path.Combine("roi", "cbf_location_l.json");
        LeftAnteriorRoiSummaryControlViewModel.RoiTabId = "cbf";
        dataBlockLoader.AddViewModel(LeftAnteriorRoiSummaryControlViewModel);

        RightAnteriorRoiSummaryControlViewModel = ActivatorUtilities.CreateInstance<RoiSummaryControlViewModel>(ServiceProviderFactory.ServiceProvider);
        RightAnteriorRoiSummaryControlViewModel.LoadPath = Path.Combine("roi", "cbf_location_r.json");
        RightAnteriorRoiSummaryControlViewModel.RoiTabId = "cbf";
        dataBlockLoader.AddViewModel(RightAnteriorRoiSummaryControlViewModel);

        LeftAttRoiSummaryControlViewModel = ActivatorUtilities.CreateInstance<RoiSummaryControlViewModel>(ServiceProviderFactory.ServiceProvider);
        LeftAttRoiSummaryControlViewModel.LoadPath = Path.Combine("roi", "att_location_l.json");
        LeftAttRoiSummaryControlViewModel.RoiTabId = "att";
        dataBlockLoader.AddViewModel(LeftAttRoiSummaryControlViewModel);

        RightAttRoiSummaryControlViewModel = ActivatorUtilities.CreateInstance<RoiSummaryControlViewModel>(ServiceProviderFactory.ServiceProvider);
        RightAttRoiSummaryControlViewModel.LoadPath = Path.Combine("roi", "att_location_r.json");
        RightAttRoiSummaryControlViewModel.RoiTabId = "att";
        dataBlockLoader.AddViewModel(RightAttRoiSummaryControlViewModel);

        LeftAcbvRoiSummaryControlViewModel = ActivatorUtilities.CreateInstance<RoiSummaryControlViewModel>(ServiceProviderFactory.ServiceProvider);
        LeftAcbvRoiSummaryControlViewModel.LoadPath = Path.Combine("roi", "acbv_location_l.json");
        LeftAcbvRoiSummaryControlViewModel.RoiTabId = "acbv";
        dataBlockLoader.AddViewModel(LeftAcbvRoiSummaryControlViewModel);

        RightAcbvRoiSummaryControlViewModel = ActivatorUtilities.CreateInstance<RoiSummaryControlViewModel>(ServiceProviderFactory.ServiceProvider);
        RightAcbvRoiSummaryControlViewModel.LoadPath = Path.Combine("roi", "acbv_location_r.json");
        RightAcbvRoiSummaryControlViewModel.RoiTabId = "acbv";
        dataBlockLoader.AddViewModel(RightAcbvRoiSummaryControlViewModel);

        MosaicImageGroupViewModel = ActivatorUtilities.CreateInstance<MosaicImageGroupControlViewModel>(ServiceProviderFactory.ServiceProvider);
        dataBlockLoader.AddDeferredLoadingModuleViewModel(MosaicImageGroupViewModel);

        dataBlockLoader.Init();

        RoiSummaryControlViewModel.RoiTabIdToTabIndexDictionary = new Dictionary<string, int>
        {
            { "cbf", 1 }, { "att", 2 }, { "acbv", 3 }
        };
    }

    public List<ReportModuleExpanderViewModel> GenerateReportModuleGroups()
    {
        List<ReportModuleItemViewModel> atlasItems =
        [
            new ReportModuleItemViewModel((string)Application.Current.TryFindResource("CerebrumCerebellumPerfusionDataGridName"),
                "AnImage_CerebrumCerebellum"),
            new ReportModuleItemViewModel((string)Application.Current.TryFindResource("BrainLobesRotationViewerName"),
                "AnImage_BrainLobes"),
            new ReportModuleItemViewModel((string)Application.Current.TryFindResource("LimbicSystemRotationViewerName"),
                "LimbicSystem")
        ];

        //TODO::maybe cache it when loading data is better. No need to check colorMap
        List<ReportModuleItemViewModel> colorImageItems = (from viewModel in MosaicImageGroupViewModel.MosaicImageCollection where viewModel.UseColorBar select new ReportModuleItemViewModel(viewModel.DisplayName, viewModel.DisplayName)).ToList();

        List<ReportModuleExpanderViewModel> result =
        [
            new ReportModuleExpanderViewModel((string)Application.Current.TryFindResource("ReportModuleAtlas"),
                "regional_perfusion", atlasItems),
            new ReportModuleExpanderViewModel((string)Application.Current.TryFindResource("ReportModuleColorImage"),
                "param_color_img", colorImageItems),
            new ReportModuleExpanderViewModel("CBF", "cbf",
                LeftAnteriorRoiSummaryControlViewModel.GenerateReportModuleList()
                    .Concat(RightAnteriorRoiSummaryControlViewModel.GenerateReportModuleList())),
            new ReportModuleExpanderViewModel("ATT", "att",
                LeftAttRoiSummaryControlViewModel.GenerateReportModuleList()
                    .Concat(RightAttRoiSummaryControlViewModel.GenerateReportModuleList())),
            new ReportModuleExpanderViewModel("aCBV", "acbv",
                LeftAcbvRoiSummaryControlViewModel.GenerateReportModuleList()
                    .Concat(RightAcbvRoiSummaryControlViewModel.GenerateReportModuleList()))
        ];
        return result;
    }

    public void Receive(DataLoadedMessage message)
    {
        RoiTabSelectedIndex = 1;
        WeakReferenceMessenger.Default.Send(new RoiTabChangedMessage(RoiTabSelectedIndex));
        AttTabVisible = LeftAttRoiSummaryControlViewModel.Visible || RightAttRoiSummaryControlViewModel.Visible;
    }

    public void Receive(PerfusionDataGridChangeParameterMessage message)
    {
        if (message.Value.Item2)
            RoiTabSelectedIndex = 0;
    }
}