using Comal.Classes;
using InABox.Core;
using InABox.DynamicGrid;
using InABox.WPF;
using InABox.Wpf;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using InABox.Configuration;
using System.Runtime.CompilerServices;

namespace PRSDesktop;

public class DigitalFormsLibrarySettings : IUserConfigurationSettings
{
    public DynamicSplitPanelView View { get; set; }
    public double AnchorWidth { get; set; }

    public DigitalFormsLibrarySettings()
    {
        View = DynamicSplitPanelView.Combined;
        AnchorWidth = 700;
    }
}

/// <summary>
/// Interaction logic for DigitalFormsLibrary.xaml
/// </summary>
public partial class DigitalFormsLibrary : UserControl, IPanel<DigitalForm>, INotifyPropertyChanged
{
    private string? CurrentGroup = null;

    private bool AllItems = true;

    public List<Tuple<string, string?, BitmapImage>> GroupList { get; private set; }

    private bool _refreshing;

    private DigitalFormsLibrarySettings _settings;

    public event PropertyChangedEventHandler? PropertyChanged;

    private bool _detailsEnabled;
    public bool DetailsEnabled
    {
        get => _detailsEnabled;
        set
        {
            _detailsEnabled = value;
            OnPropertyChanged();
        }
    }

    public DigitalFormsLibrary()
    {
        InitializeComponent();

        Variables.Bind(IsEnabledProperty, this, x => x.DetailsEnabled, mode: BindingMode.OneWay);
        Layouts.Bind(IsEnabledProperty, this, x => x.DetailsEnabled);
        Reports.Bind(IsEnabledProperty, this, x => x.DetailsEnabled);
        Documents.Bind(IsEnabledProperty, this, x => x.DetailsEnabled);
    }

    private void DoLoadSettings()
    {
        _settings = new UserConfiguration<DigitalFormsLibrarySettings>().Load();

        FormsSplitPanel.View = _settings.View;
        FormsSplitPanel.AnchorWidth = _settings.AnchorWidth;
    }
    
    private void DoSaveSettings()
    {
        _settings.View = FormsSplitPanel.View;
        _settings.AnchorWidth = FormsSplitPanel.AnchorWidth;
        new UserConfiguration<DigitalFormsLibrarySettings>().Save(_settings);
    }
        

    #region Panel Stuff

    public bool IsReady { get; set; }

    public string SectionName => "Digital Forms Library";

    public event DataModelUpdateEvent? OnUpdateDataModel;

    public Dictionary<string, object[]> Selected()
    {
        return new Dictionary<string, object[]> {
            { typeof(DigitalForm).EntityName(), Forms.SelectedRows }
        };
    }

    public DataModel DataModel(Selection selection)
    {
        var ids = Forms.ExtractValues(x => x.ID, selection).ToArray();
        return new AutoDataModel<DigitalForm>(Filter<DigitalForm>.Where(x => x.ID).InList(ids));
    }

    public void CreateToolbarButtons(IPanelHost host)
    {
    }

    public void Setup()
    {
        DoLoadSettings();

        Variables.LayoutGrid = Layouts;
        Layouts.VariableGrid = Variables;
        Reports.VariableGrid = Variables;
        Reports.LayoutGrid = Layouts;

        Forms.Refresh(true, false);
        Variables.Refresh(true, false);
        Layouts.Refresh(true, false);
        Reports.Refresh(true, false);
        Documents.Refresh(true, false);

        RolesTab.Visibility = Security.CanView<DigitalForm>()
            && Security.CanView<Role>()
            && Security.CanView<RoleForm>() ? Visibility.Visible : Visibility.Collapsed;
        var visibleTabItems = Tab.Items.OfType<DynamicTabItem>().Where(x => x.Visibility == Visibility.Visible).ToList();
        if (visibleTabItems.Count <= 1)
        {
            foreach (var tab in visibleTabItems)
            {
                tab.Visibility = Visibility.Collapsed;
                Tab.SelectedItem = tab;
            }
        }
    }

    private void Tab_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        if (e.OriginalSource != Tab) return;
        RefreshCurrentTab();
    }

    private void RefreshCurrentTab()
    {
        if (Tab.SelectedTab == FormsTab)
        {
            RefreshFormsTab();
        }
        else if (Tab.SelectedTab == RolesTab)
        {
            RefreshRoleTab();
        }
    }

    private void RefreshFormsTab()
    {
        Forms.Refresh(false, true);
    }

    private void RefreshRoleTab()
    {
        DigitalFormRoles.Refresh(true, true);
    }

    public void Refresh()
    {
        RefreshCurrentTab();
    }

    public void Heartbeat(TimeSpan time)
    {
    }

    public void Shutdown(CancelEventArgs? cancel)
    {
    }

    #endregion

    private void Forms_OnSelectItem(object sender, DynamicGridSelectionEventArgs e)
    {
        var form = e.Rows?.FirstOrDefault()?.ToObject<DigitalForm>();
        DetailsEnabled = form is not null;
        Layouts.Form = form;
        Layouts.Refresh(false, true);
        Variables.Form = form;
        Variables.Refresh(false, true);
        Reports.Form = form;
        Reports.Refresh(false, true);
        Documents.Item = form;
        Documents.Refresh(false, true);
    }

    private void Groups_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        if (_refreshing || e.OriginalSource != Groups)
            return;

        string? newCurrentGroup;
        if (e.AddedItems.Count == 0 || Groups.SelectedIndex == 0)
        {
            AllItems = true;
            newCurrentGroup = GroupList.Any() ? GroupList.First().Item2 : null;
        }
        else
        {
            AllItems = false;
            var selected = (Tuple<string, string?, BitmapImage>)e.AddedItems[0];
            newCurrentGroup = selected.Item2;
        }

        if (!Equals(newCurrentGroup, CurrentGroup))
        {
            CurrentGroup = newCurrentGroup;
            Forms.Refresh(false, false);
        }
    }

    private void Forms_AfterRefresh(object sender, InABox.DynamicGrid.AfterRefreshEventArgs args)
    {
        if (Forms.MasterData is null)
            return;

        _refreshing = true;
        GroupList = new List<Tuple<string, string?, BitmapImage>>
        {
            new Tuple<string, string?, BitmapImage>("All Items", null, PRSDesktop.Resources.doc_misc.AsBitmapImage())
        };

        foreach (var row in Forms.MasterData!.Rows)
        {
            var appliesTo = row.Get<DigitalForm, string>(x => x.AppliesTo);
            var display = appliesTo.NotWhiteSpaceOr("Unassigned");

            if (!GroupList.Any(x => x.Item1.Equals(display)))
                GroupList.Add(new Tuple<string, string?, BitmapImage>(display, appliesTo, PRSDesktop.Resources.doc_misc.AsBitmapImage()));
        }

        GroupList = GroupList.OrderBy(x => (x.Item1 == "All Items" ? "0" : x.Item1 == "Unassigned" ? "1" : "2") + x.Item1).ToList();
        Groups.ItemsSource = GroupList;

        Groups.Visibility = Visibility.Visible;

        var index = GroupList.FindIndex(x => Equals(x.Item2, CurrentGroup));
        if(index == -1)
        {
            index = 0;
            CurrentGroup = null;
            Groups.SelectedIndex = 0;
            AllItems = true;

            _refreshing = false;

            Forms.Refresh(false, false);
        }
        else
        {
            Groups.SelectedIndex = index;
            AllItems = index == 0;

            _refreshing = false;
        }
    }

    private void Forms_OnCreateItem(object sender, object item)
    {
        if (item is not DigitalForm form) return;

        form.AppliesTo = CurrentGroup ?? "";
    }

    private bool Forms_OnFilterRecord(CoreRow row)
    {
        return AllItems || Equals(row.Get<DigitalForm, string>(x => x.AppliesTo), CurrentGroup);
    }

    private void DynamicSplitPanel_OnChanged(object sender, DynamicSplitPanelSettings e)
    {
        DoSaveSettings();
        if (FormsSplitPanel.IsDetailVisible())
        {
            Layouts.Refresh(false, true);
            Variables.Refresh(false, true);
        }
    }

    private void OnPropertyChanged([CallerMemberName] string? property = null)
    {
        PropertyChanged?.Invoke(this, new(property));
    }
}