using com.sun.tools.doclets.formats.html;
using Comal.Classes;
using InABox.Clients;
using InABox.Core;
using InABox.DynamicGrid;
using InABox.Reports;
using InABox.Reports.Common;
using InABox.Scripting;
using InABox.WPF;
using PRSDesktop.Configuration;
using PRSDesktop.Forms;
using PRSDesktop.WidgetGroups;
using Syncfusion.UI.Xaml.Grid;
using Syncfusion.UI.Xaml.Grid.Converter;
using Syncfusion.Windows.Shared;
using Syncfusion.XlsIO;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
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 SelectionChangedEventArgs = System.Windows.Controls.SelectionChangedEventArgs;

namespace PRSDesktop
{
    public enum DateFilterType
    {
        Today,
        Yesterday,
        Week,
        SevenDays,
        Month,
        ThirtyDays,
        Year,
        TwelveMonths,
        Custom
    }

    public class DFFilter : BaseObject
    {
        [EditorSequence(1)]
        [TextBoxEditor]
        public string Name { get; set; }

        [EditorSequence(2)]
        [FilterEditor]
        public string Filter { get; set; }

        protected override void Init()
        {
            base.Init();
            Name = "";
            Filter = "";
        }
    }

    public class DigitalFormsDashboardProperties : IDashboardProperties
    {
        public bool ShowJobFilter { get; set; } = false;
        public bool ShowDateFilter { get; set; } = true;

        public Guid JobID { get; set; }

        public DateFilterType DateFilterType { get; set; } = DateFilterType.Today;

        public DateTime FromDate { get; set; }
        public DateTime ToDate { get; set; }

        public Dictionary<string, List<DFFilter>> Filters { get; set; } = new();
    }

    public class DigitalFormsDashboardElement : DashboardElement<DigitalFormsDashboard, Common, DigitalFormsDashboardProperties> { }

    /// <summary>
    /// Interaction logic for DigitalFormsDashboard.xaml
    /// </summary>
    public partial class DigitalFormsDashboard : UserControl, 
        IDashboardWidget<Common, DigitalFormsDashboardProperties>, 
        IRequiresSecurity<CanViewDigitalFormsDashbaord>,
        IHeaderDashboard, IActionsDashboard
    {
        public DigitalFormsDashboardProperties Properties { get; set; }

        private List<DigitalForm> DigitalForms;
        private List<Job> Jobs;
        private Dictionary<string, string> Categories;

        public DashboardHeader Header { get; set; } = new();

        private bool IsQAForm = false;
        private List<QAQuestion> Questions = new();

        public DigitalFormsDashboard()
        {
            InitializeComponent();
        }

        public void Setup()
        {
            var results = Client.QueryMultiple(
                new KeyedQueryDef<DigitalForm>(new Filter<DigitalForm>(x => x.Active).IsEqualTo(true)),
                new KeyedQueryDef<Job>(
                    LookupFactory.DefineFilter<Job>(),
                    new Columns<Job>(x => x.ID)
                        .Add(x => x.JobNumber)
                        .Add(x => x.Name)));

            DigitalForms = results.Get<DigitalForm>().ToList<DigitalForm>();

            var categories = new DigitalFormCategoryLookups(null);
            categories.OnAfterGenerateLookups += (sender, entries) => { entries.Insert(0, new LookupEntry("", "Select Category")); };

            Categories = categories.AsTable("AppliesTo")
                .ToDictionary("AppliesTo", "Display")
                .Cast<KeyValuePair<object, string>>()
                .ToDictionary(x => (x.Key as string)!, x => x.Value);

            Jobs = results.Get<Job>().ToList<Job>();
            Jobs.Insert(0, new Job { ID = Guid.Empty, JobNumber = "ALL", Name = "All Jobs" });

            SetupHeader();
            SetupFilters();
        }

        #region Header

        private ComboBox CategoryBox;
        private ComboBox FormBox;
        private ComboBox JobBox;

        private ComboBox DateTypeBox;

        private Label FromLabel;
        private DatePicker FromPicker;

        private Label ToLabel;
        private DatePicker ToPicker;

        private Button Print;

        private static Dictionary<DateFilterType, string> FilterTypes = new()
        {
            { DateFilterType.Today,         "Today" },
            { DateFilterType.Yesterday,     "Yesterday" },
            { DateFilterType.Week,          "Week to Date" },
            { DateFilterType.SevenDays,     "Last 7 Days" },
            { DateFilterType.Month,         "Month to Date" },
            { DateFilterType.ThirtyDays,    "Last 30 Days" },
            { DateFilterType.Year,          "Year to Date" },
            { DateFilterType.TwelveMonths,  "Last 12 Months" },
            { DateFilterType.Custom,        "Custom" }
        };

        public void SetupHeader()
        {
            CategoryBox = new ComboBox {
                Width = 150,
                VerticalContentAlignment = VerticalAlignment.Center,
                Margin = new Thickness(0, 0, 5, 0)
            };
            CategoryBox.ItemsSource = Categories;
            CategoryBox.SelectedValuePath = "Key";
            CategoryBox.DisplayMemberPath = "Value";
            CategoryBox.SelectionChanged += Category_SelectionChanged;

            FormBox = new ComboBox
            {
                Width = 250,
                VerticalContentAlignment = VerticalAlignment.Center,
                Margin = new Thickness(0, 0, 5, 0),
                IsEnabled = false
            };
            FormBox.SelectionChanged += FormBox_SelectionChanged;
            FormBox.ItemsSource = new Dictionary<DigitalForm, string> { };

            JobBox = new ComboBox
            {
                Width = 250,
                Margin = new Thickness(0, 0, 5, 0),
                VerticalContentAlignment = VerticalAlignment.Center
            };
            JobBox.ItemsSource = Jobs.ToDictionary(x => x.ID, x => $"{x.JobNumber} : {x.Name}");
            JobBox.SelectedIndex = 0;
            JobBox.SelectedValuePath = "Key";
            JobBox.DisplayMemberPath = "Value";
            JobBox.SelectionChanged += JobBox_SelectionChanged;

            DateTypeBox = new ComboBox
            {
                Width = 120,
                VerticalContentAlignment = VerticalAlignment.Center
            };
            DateTypeBox.ItemsSource = FilterTypes;
            DateTypeBox.SelectedValuePath = "Key";
            DateTypeBox.DisplayMemberPath = "Value";
            DateTypeBox.SelectedValue = Properties.DateFilterType;
            DateTypeBox.SelectionChanged += DateTypeBox_SelectionChanged;

            FromLabel = new Label { Content = "From", VerticalContentAlignment = VerticalAlignment.Center, Margin = new Thickness(0, 0, 5, 0) };
            FromPicker = new DatePicker {
                Width = 100,
                Background = new SolidColorBrush(Colors.LightYellow),
                VerticalContentAlignment = VerticalAlignment.Center,
                FirstDayOfWeek = DayOfWeek.Monday,
                Margin = new Thickness(0, 0, 5, 0)
            };
            FromPicker.SelectedDateChanged += FromPicker_SelectedDateChanged;

            ToLabel = new Label { Content = "To", VerticalContentAlignment = VerticalAlignment.Center, Margin = new Thickness(0, 0, 5, 0) };
            ToPicker = new DatePicker
            {
                Width = 100,
                Background = new SolidColorBrush(Colors.LightYellow),
                VerticalContentAlignment = VerticalAlignment.Center,
                FirstDayOfWeek = DayOfWeek.Monday,
                Margin = new Thickness(0, 0, 5, 0)
            };
            ToPicker.SelectedDateChanged += ToPicker_SelectedDateChanged;

            Print = new Button
            {
                Width = 25,
                Height = 25,
                Content = new Image { Source = PRSDesktop.Resources.printer.AsBitmapImage() }
            };
            Print.Click += Print_Click;

            Header.BeginUpdate()
                .Clear()
                .Add(CategoryBox)
                .Add(FormBox)
                .Add(JobBox)
                .Add(DateTypeBox)
                .Add(FromLabel)
                .Add(FromPicker)
                .Add(ToLabel)
                .Add(ToPicker)
                .AddRight(Print);

            Header.EndUpdate();
        }

        private void Print_Click(object sender, RoutedEventArgs e)
        {
            var menu = new ContextMenu();
            foreach (var report in ReportUtils.LoadReports(SectionName, DataModel(Selection.None)))
            {
                menu.AddItem(report.Name, PRSDesktop.Resources.printer, report, PrintReport_Click);
            }
            if (Security.IsAllowed<CanDesignReports>())
            {
                menu.AddSeparatorIfNeeded();
                menu.AddItem("Manage Reports", PRSDesktop.Resources.printer, ManageReports_Click);
            }
            menu.IsOpen = true;
        }
        private void PrintReport_Click(ReportTemplate obj)
        {
            Selection selection;
            if (obj.SelectedRecords && obj.AllRecords)
                selection = RecordSelectionDialog.Execute();
            else if (obj.SelectedRecords)
                selection = Selection.Selected;
            else if (obj.AllRecords)
                selection = Selection.All;
            else
                selection = Selection.None;

            ReportUtils.PreviewReport(obj, DataModel(selection), false, Security.IsAllowed<CanDesignReports>());
        }

        private void ManageReports_Click()
        {
            var manager = new ReportManager()
            {
                DataModel = DataModel(Selection.None),
                Section = SectionName,
                Populate = true
            };
            manager.ShowDialog();
        }

        private void Search_KeyUp(object sender, KeyEventArgs e)
        {
            Refresh();
        }

        private void JobBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            Properties.JobID = (Guid)JobBox.SelectedValue;
            Refresh();
        }

        private void SetDateFilterVisibility(bool visible)
        {
            var visibility = visible ? Visibility.Visible : Visibility.Collapsed;
            FromLabel.Visibility = visibility;
            FromPicker.Visibility = visibility;
            ToLabel.Visibility = visibility;
            ToPicker.Visibility = visibility;
            DateTypeBox.Visibility = visibility;
        }
        private void SetJobFilterVisibility(bool visible)
        {
            var visibility = visible ? Visibility.Visible : Visibility.Collapsed;
            JobBox.Visibility = visibility;
        }

        private void DateTypeBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            var filterType = (DateFilterType)DateTypeBox.SelectedValue;
            Properties.DateFilterType = filterType;
            if(filterType == DateFilterType.Custom)
            {
                if (FromPicker.SelectedDate == null || FromPicker.SelectedDate == DateTime.MinValue)
                {
                    Properties.FromDate = DateTime.Today;
                }
                else
                {
                    Properties.FromDate = FromPicker.SelectedDate.Value;
                }
                if (ToPicker.SelectedDate == null || ToPicker.SelectedDate == DateTime.MinValue)
                {
                    Properties.ToDate = DateTime.Today;
                }
                else
                {
                    Properties.ToDate = ToPicker.SelectedDate.Value;
                }
            }
            SetupDateFilters();
            Refresh();
        }

        private void FromPicker_SelectedDateChanged(object? sender, SelectionChangedEventArgs e)
        {
            Properties.FromDate = FromPicker.SelectedDate ?? DateTime.Today;
        }

        private void ToPicker_SelectedDateChanged(object? sender, SelectionChangedEventArgs e)
        {
            Properties.ToDate = ToPicker.SelectedDate ?? DateTime.Today;
        }

        private void Category_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            SetCategory((CategoryBox.SelectedValue as string)!);

            var jobLink = FormType is not null ? GetJobLink("", FormType) : "";
            if (string.IsNullOrWhiteSpace(jobLink))
            {
                var jobID = Properties.JobID;
                JobBox.SelectedValue = Guid.Empty;
                JobBox.IsEnabled = false;
                Properties.JobID = jobID;
            }
            else
            {
                JobBox.SelectedValue = Properties.JobID;
                JobBox.IsEnabled = true;
            }

            if (ParentType is null)
            {
                FormBox.IsEnabled = false;
                FormBox.ItemsSource = new Dictionary<DigitalForm, string> { };
            }
            else
            {
                var forms = DigitalForms.Where(x => x.AppliesTo == ParentType.Name).ToList();
                forms.Insert(0, new DigitalForm { ID = Guid.Empty, Description = "Select Form" });
                FormBox.ItemsSource = forms;
                FormBox.DisplayMemberPath = "Description";
                FormBox.SelectedIndex = 0;

                FormBox.IsEnabled = true;
            }
            Refresh();
        }

        private void FormBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            Form = (FormBox.SelectedValue as DigitalForm)!;
            Refresh();
        }

        #endregion

        private string SectionName
        {
            get
            {
                if (Form is null || Form.ID == Guid.Empty)
                    return "Digital Forms";
                return Form.ID.ToString() ?? "Digital Forms";
            }
        }
        private DataModel DataModel(Selection selection)
        {
            if(FormType is null || Form is null || Form.ID == Guid.Empty)
            {
                return new AutoDataModel<DigitalForm>(new Filter<DigitalForm>().None());
            }

            IFilter filter;
            switch (selection)
            {
                case Selection.Selected:
                    var formids = DataGrid.SelectedItems.Select(x => (x as DataRowView)!.Row["ID"]).ToArray();
                    filter = Filter.Create<Entity>(FormType, x => x.ID).InList(formids);
                    break;
                case Selection.All:
                    filter = Filter.Create(FormType).All();
                    break;
                case Selection.None:
                default:
                    filter = Filter.Create(FormType).None();
                    break;
            }

            return (Activator.CreateInstance(typeof(DigitalFormReportDataModel<>)!
                .MakeGenericType(FormType), new object?[] { filter, Form.ID }) as DataModel)!;
        }

        public void BuildActionsMenu(ContextMenu menu)
        {
            menu.AddCheckItem<object?>("Show Date Filter", null, ToggleDateFilter, Properties.ShowDateFilter);
            menu.AddCheckItem<object?>("Show Job Filter", null, ToggleJobFilter, Properties.ShowJobFilter);
            menu.AddSeparator();

            if (ParentType is not null)
            {
                menu.AddSeparatorIfNeeded();
                if (Properties.Filters.TryGetValue(ParentType.Name, out var filters))
                {
                    var i = 0;
                    var items = new List<MenuItem>();
                    foreach (var filter in filters)
                    {
                        items.Add(menu.AddCheckItem(
                            filter.Name,
                            new Tuple<int, string, List<MenuItem>>(i, filter.Filter, items),
                            ExecuteFilter,
                            i == CustomFilterIndex));
                        ++i;
                    }
                }
                menu.AddSeparatorIfNeeded();
                menu.AddItem("Manage Filters", InABox.DynamicGrid.Properties.Resources.filter, ManageFilters_Click);
            }

            menu.AddSeparatorIfNeeded();
            menu.AddItem("Export", InABox.DynamicGrid.Properties.Resources.doc_xls, Export_Click, Form is not null && Form.ID != Guid.Empty);
            var loadingModules = menu.AddItem("Loading Modules...", null, null, false);
            Task.Run(() =>
            {
                return CustomModuleUtils.LoadCustomModuleThumbnails(SectionName, DataModel(Selection.None));
            }).ContinueWith((task) =>
            {
                var modules = task.Result;
                var index = menu.Items.IndexOf(loadingModules);
                menu.Items.RemoveAt(index);
                foreach (var (module, image) in modules)
                {
                    menu.AddItem(module.Name, image, module, ExecuteModule_Click, index: index);
                    ++index;
                }
            }, TaskScheduler.FromCurrentSynchronizationContext());

            if (Security.IsAllowed<CanCustomiseModules>())
            {
                menu.AddSeparatorIfNeeded();
                menu.AddItem("Manage Modules", PRSDesktop.Resources.script, ManageModules_Click);
            }
        }

        private void Export_Click()
        {
            var formName = Regex.Replace(Form?.Description ?? "", "[^ a-zA-Z0-9]", string.Empty);
            var filename = string.Format("{0} - {1} - {2:yyyy-MM-dd} - {3:yyyy-MM-dd}.xlsx", ParentType!.Name, formName, From, To);

            var options = new ExcelExportingOptions();
            options.ExcelVersion = ExcelVersion.Excel2013;
            options.ExportStackedHeaders = true;
            var excelEngine = DataGrid.ExportToExcel(DataGrid.View, options);
            var workBook = excelEngine.Excel.Workbooks[0];
            var sheet = workBook.Worksheets[0];
            sheet.Name = "Summary";
            sheet.UsedRange.AutofitRows();
            sheet.UsedRange.AutofitColumns();

            sheet = workBook.Worksheets.Create("Questions");
            sheet.Move(0);
            var questions = new Client<QAQuestion>().Query(new Filter<QAQuestion>(x => x.Form.ID).IsEqualTo(Form!.ID));
            sheet.Range[1, 1].Text = Form?.Description ?? "";
            sheet.Range[1, 1, 1, 3].Merge();
            var i = 1;
            foreach (var row in questions.Rows)
                if (!row.Get<QAQuestion, QAAnswer>(x => x.Answer).Equals(QAAnswer.Comment))
                {
                    sheet.Range[i + 2, 1].Text = string.Format("{0}.", i);
                    sheet.Range[i + 2, 2].Text = string.Format("{0}", row.Get<QAQuestion, string>(x => x.Question));
                    sheet.Range[i + 2, 3].Text = string.Format("[{0}]", row.Get<QAQuestion, string>(x => x.Code));
                    i++;
                }

            sheet.UsedRange.AutofitRows();
            sheet.UsedRange.AutofitColumns();

            try
            {
                workBook.SaveAs(filename);

                var startInfo = new ProcessStartInfo(filename);
                startInfo.Verb = "open";
                startInfo.UseShellExecute = true;
                Process.Start(startInfo);
            }
            catch
            {
                MessageBox.Show(string.Format("Unable to Save/Launch [{0}]!\n\nIs the file already open?", filename));
            }
        }

        private void ManageFilters_Click()
        {
            var filters = Properties.Filters.GetValueOrDefault(ParentType!.Name) ?? new List<DFFilter>();
            var gridFilters = new DynamicGridFilters();
            gridFilters.AddRange(filters.Select(x => new DynamicGridFilter { Name = x.Name, Filter = x.Filter }));

            var grid = new DynamicGridFilterEditor(gridFilters, FormType!);
            if (grid.ShowDialog() == true)
            {
                Properties.Filters[ParentType!.Name] = grid.Filters.Select(x => new DFFilter { Name = x.Name, Filter = x.Filter }).ToList();

                if (CustomFilterIndex != null)
                {
                    Refresh();
                }
            }
        }

        private void ExecuteFilter(Tuple<int, string, List<MenuItem>> tag, bool isChecked)
        {
            var (index, filter, items) = tag;

            if (isChecked)
            {
                var i = 0;
                foreach (var item in items)
                {
                    item.IsChecked = i == index;
                    ++i;
                }
            }

            if (isChecked)
            {
                CustomFilter = Serialization.Deserialize(typeof(Filter<>).MakeGenericType(FormType!), filter) as IFilter;
                CustomFilterIndex = index;
                Refresh();
            }
            else if (index == CustomFilterIndex)
            {
                CustomFilter = null;
                CustomFilterIndex = null;
                Refresh();
            }
        }

        private void ExecuteModule_Click(CustomModule obj)
        {
            if (!string.IsNullOrWhiteSpace(obj.Script))
                try
                {
                    Selection selection;
                    if (obj.SelectedRecords && obj.AllRecords)
                        selection = RecordSelectionDialog.Execute();
                    else if (obj.SelectedRecords)
                        selection = Selection.Selected;
                    else if (obj.AllRecords)
                        selection = Selection.All;
                    else
                        selection = Selection.None;

                    var result = ScriptDocument.RunCustomModule(DataModel(selection), new Dictionary<string, object[]>(), obj.Script);
                    if (result)
                        Refresh();
                }
                catch (CompileException c)
                {
                    MessageBox.Show(c.Message);
                }
                catch (Exception err)
                {
                    MessageBox.Show(CoreUtils.FormatException(err));
                }
            else
                MessageBox.Show("Unable to load " + obj.Name);
        }

        private void ManageModules_Click()
        {
            var section = SectionName;
            var dataModel = DataModel(Selection.Selected);

            var manager = new CustomModuleManager()
            {
                Section = section,
                DataModel = dataModel
            };
            manager.ShowDialog();
        }

        private void ToggleDateFilter(object? tag, bool isChecked)
        {
            Properties.ShowDateFilter = isChecked;
            SetDateFilterVisibility(Properties.ShowDateFilter);
        }

        private void ToggleJobFilter(object? tag, bool isChecked)
        {
            Properties.ShowJobFilter = isChecked;
            SetJobFilterVisibility(Properties.ShowJobFilter);
            Refresh();
        }

        #region Filtering

        private DateTime From { get; set; }
        private DateTime To { get; set; }
        private bool IsEntityForm { get; set; }
        private Type? ParentType { get; set; }
        private Type? FormType { get; set; }
        private DigitalForm? Form { get; set; }
        private IFilter? CustomFilter { get; set; }
        private int? CustomFilterIndex { get; set; }

        private readonly Dictionary<string, string> QuestionCodes = new();

        private static int WeekDay(DateTime date)
        {
            if (date.DayOfWeek == DayOfWeek.Sunday)
                return 7;
            return (int)date.DayOfWeek - 1;
        }

        private void SetupDateFilters()
        {
            switch (Properties.DateFilterType)
            {
                case DateFilterType.Today:
                    From = DateTime.Today;
                    To = DateTime.Today;
                    break;
                case DateFilterType.Yesterday:
                    From = DateTime.Today.AddDays(-1);
                    To = DateTime.Today.AddDays(-1);
                    break;
                case DateFilterType.Week:
                    From = DateTime.Today.AddDays(-WeekDay(DateTime.Today));
                    To = DateTime.Today;
                    break;
                case DateFilterType.SevenDays:
                    From = DateTime.Today.AddDays(-6);
                    To = DateTime.Today;
                    break;
                case DateFilterType.Month:
                    From = new DateTime(DateTime.Today.Year, DateTime.Today.Month, 1);
                    To = DateTime.Today;
                    break;
                case DateFilterType.ThirtyDays:
                    From = DateTime.Today.AddDays(-29);
                    To = DateTime.Today;
                    break;
                case DateFilterType.Year:
                    From = new DateTime(DateTime.Today.Year, 1, 1);
                    To = DateTime.Today;
                    break;
                case DateFilterType.TwelveMonths:
                    From = DateTime.Today.AddYears(-1).AddDays(1);
                    To = DateTime.Today;
                    break;
                case DateFilterType.Custom:
                    From = Properties.FromDate;
                    To = Properties.ToDate;
                    break;
            }

            DateTypeBox.SelectedValue = Properties.DateFilterType;

            FromPicker.SelectedDate = From;
            ToPicker.SelectedDate = To;

            var enabledPicker = Properties.DateFilterType == DateFilterType.Custom;
            FromPicker.IsEnabled = enabledPicker;
            ToPicker.IsEnabled = enabledPicker;
        }

        private void SetupJobFilter()
        {
            JobBox.SelectedValue = Properties.JobID;
        }

        private void SetupFilters()
        {
            SetupDateFilters();
            SetupJobFilter();
            SetDateFilterVisibility(Properties.ShowDateFilter);
            SetJobFilterVisibility(Properties.ShowJobFilter);
        }

        #region Categories

        private static Dictionary<string, Tuple<Type, Type>>? FormInstanceTypes;

        private static readonly Dictionary<Type, List<Tuple<string, string>>> parentColumns = new()
        {
            { typeof(Kanban), new() { new("Parent.Number", "Task No") } },
            { typeof(Job), new() { new("Parent.JobNumber", "Job No") } },
            { typeof(JobITP), new() { new("Parent.Code", "Code") } },
            { typeof(Assignment), new() { new("Parent.Number", "Ass. No") } },
            { typeof(TimeSheet), new() { } },
            { typeof(LeaveRequest), new() { } },
            { typeof(Employee), new() { new("Parent.Code", "Employee") } },
            { typeof(PurchaseOrderItem), new() { new("Parent.PONumber", "PO No") } },
        };

        private static bool CategoryToType(string category, [NotNullWhen(true)] out Type? formType, [NotNullWhen(true)] out Type? parentType)
        {
            FormInstanceTypes ??= CoreUtils.TypeList(
                AppDomain.CurrentDomain.GetAssemblies(),
                x => !x.IsAbstract && x.GetInterfaces().Contains(typeof(IDigitalFormInstance))
            ).Select(x =>
            {
                var inter = x.GetInterfaces()
                    .Where(x => x.IsGenericType && x.GetGenericTypeDefinition().Equals(typeof(IDigitalFormInstance<>))).FirstOrDefault();
                if (inter is not null)
                {
                    var link = inter.GenericTypeArguments[0];
                    var entityLinkDef = link.GetSuperclassDefinition(typeof(EntityLink<>));
                    if (entityLinkDef is not null)
                    {
                        var entityType = entityLinkDef.GenericTypeArguments[0];
                        return new Tuple<string, Type, Type>(entityType.Name, x, entityType);
                    }
                }
                return null;
            }).Where(x => x is not null).ToDictionary(x => x!.Item1, x => new Tuple<Type, Type>(x!.Item2, x!.Item3));

            if (!FormInstanceTypes.TryGetValue(category, out var result))
            {
                formType = null;
                parentType = null;
                return false;
            }
            formType = result.Item1;
            parentType = result.Item2;
            return true;
        }

        private void SetCategory(string category)
        {
            CustomFilter = null;
            CustomFilterIndex = null;
            if (!CategoryToType(category, out var formType, out var parentType))
            {
                IsEntityForm = false;
                ParentType = null;
                FormType = null;
                return;
            }
            IsEntityForm = formType.IsSubclassOfRawGeneric(typeof(EntityForm<,>));
            ParentType = parentType;
            FormType = formType;
        }

        #endregion

        private string GetJobLink(string prefix, Type type)
        {
            var props = type.GetProperties().Where(x =>
                x.PropertyType.BaseType != null && x.PropertyType.BaseType.IsGenericType &&
                x.PropertyType.BaseType.GetGenericTypeDefinition() == typeof(EntityLink<>));
            foreach (var prop in props)
            {
                if (prop.PropertyType == typeof(JobLink))
                    return (string.IsNullOrEmpty(prefix) ? "" : prefix + ".") + prop.Name;
                var result = GetJobLink((string.IsNullOrEmpty(prefix) ? "" : prefix + ".") + prop.Name, prop.PropertyType);
                if (!string.IsNullOrEmpty(result))
                    return result;
            }

            return "";
        }

        /// <summary>
        /// Find a link from the form type to an associated <see cref="Job"/>, allowing us to filter based on jobs.
        /// </summary>
        /// <returns>The property name of the <see cref="JobLink"/>.</returns>
        private string GetJobLink<T>() where T : IDigitalFormInstance
            => GetJobLink("", typeof(T));

        private IKeyedQueryDef GetFormQuery<T>()
            where T : Entity, IRemotable, IPersistent, IDigitalFormInstance, new()
        {
            var sort = LookupFactory.DefineSort<T>();

            var jobLink = GetJobLink<T>();

            var filter = new Filter<T>(x => x.FormCompleted).IsGreaterThanOrEqualTo(From)
                .And(x => x.FormCompleted).IsLessThan(To.AddDays(1))
                .And(x => x.Form.ID).IsEqualTo(Form!.ID);
            
            if (Properties.JobID != Guid.Empty && Properties.ShowJobFilter)
            {
                filter.And(jobLink + ".ID").IsEqualTo(Properties.JobID);
            }
            if (CustomFilter is not null)
            {
                filter.And(CustomFilter);
            }

            var columns = new Columns<T>(x => x.ID)
                .Add(x => x.Form.ID)
                .Add(x => x.FormData)
                .Add(x => x.FormCompleted)
                .Add(x => x.FormCompletedBy.UserID)
                .Add(x => x.Location.Timestamp)
                .Add(x => x.Location.Latitude)
                .Add(x => x.Location.Longitude);

            var parentcols = LookupFactory.DefineColumns(ParentType!);
            foreach (var col in parentcols.ColumnNames())
                columns.Add("Parent." + col);
            if (parentColumns.TryGetValue(ParentType!, out var pColumns))
            {
                foreach (var (field, name) in pColumns)
                {
                    columns.Add(field);
                }
            }

            if (IsEntityForm)
                columns.Add("Processed");
            if (!string.IsNullOrWhiteSpace(jobLink))
                columns.Add(jobLink + ".ID");

            return new KeyedQueryDef<T>(filter, columns, sort);
        }

        #endregion

        private void LoadDataIntoGrid(List<DigitalFormVariable> variables, List<QAQuestion> questions, CoreTable formData, List<string> additionalColumns, CoreTable? jobITPs)
        {
            var data = new DataTable();
            data.Columns.Add("ID", typeof(Guid));
            data.Columns.Add("Form_ID", typeof(Guid));
            data.Columns.Add("Parent_ID", typeof(Guid));
            data.Columns.Add("Location_Timestamp", typeof(DateTime));
            data.Columns.Add("Location_Latitude", typeof(double));
            data.Columns.Add("Location_Longitude", typeof(double));
            data.Columns.Add("FormData", typeof(string));

            if (ParentType == typeof(JobITP))
            {
                data.Columns.Add("Job No", typeof(string));
            }
            if (parentColumns.TryGetValue(ParentType!, out var pColumns))
            {
                foreach (var (field, name) in pColumns)
                {
                    data.Columns.Add(name, typeof(string));
                }
            }

            data.Columns.Add("Description", typeof(string));
            data.Columns.Add("Completed", typeof(DateTime));
            data.Columns.Add("Completed By", typeof(string));
            if (IsEntityForm)
                data.Columns.Add("Processed", typeof(bool));

            if (variables.Any())
            {
                foreach (var variable in variables)
                {
                    var code = variable.Code.Replace("/", " ");
                    QuestionCodes[code] = Thread.CurrentThread.CurrentCulture.TextInfo.ToTitleCase(code.ToLower());
                    data.Columns.Add(code, typeof(string));
                }
            }
            else if (questions.Any())
            {
                Questions = questions;
                Progress.SetMessage("Loading Checks");
                QAGrid.Clear();
                QAGrid.LoadChecks(Form!.Description, Questions, new Dictionary<Guid, object>());
                QAGrid.CollapseMargins();

                var i = 1;
                foreach (var question in Questions)
                {
                    var id = question.ID.ToString();
                    if (!question.Answer.Equals(QAAnswer.Comment))
                    {
                        data.Columns.Add(id, typeof(string));
                        var code = question.Code;
                        QuestionCodes[id] = string.IsNullOrEmpty(code) ? string.Format("{0}.", i) : code;
                        i++;
                    }
                }
            }

            foreach (var row in formData.Rows)
            {
                var form = (row.ToObject(FormType!) as IDigitalFormInstance)!;
                if (!string.IsNullOrWhiteSpace(form.FormData))
                {
                    var dataRow = data.NewRow();

                    dataRow["ID"] = form.ID;
                    dataRow["Form_ID"] = form.Form.ID;
                    dataRow["Parent_ID"] = form.ParentID();
                    dataRow["Location_Timestamp"] = form.Location.Timestamp;
                    dataRow["Location_Latitude"] = form.Location.Latitude;
                    dataRow["Location_Longitude"] = form.Location.Longitude;
                    dataRow["FormData"] = form.FormData;

                    var desc = new List<string>();
                    foreach (var col in additionalColumns)
                    {
                        var val = row[col];
                        if (val != null && val is not Guid)
                            desc.Add(val.ToString() ?? "");
                    }

                    dataRow["Description"] = string.Join(" : ", desc);

                    dataRow["Completed"] = form.FormCompleted;
                    dataRow["Completed By"] = form.FormCompletedBy.UserID;

                    if (IsEntityForm)
                        dataRow["Processed"] = (bool?)row["Processed"] ?? false;

                    if (ParentType == typeof(JobITP))
                    {
                        var jobITP = jobITPs!.Rows.FirstOrDefault(x => x.Get<JobITP, Guid>(x => x.ID) == form.ParentID());
                        if(jobITP is not null)
                        {
                            var jobID = jobITP.Get<JobITP, Guid>(x => x.Job.ID);
                            dataRow["Job No"] = Jobs.Where(x => x.ID == jobID).FirstOrDefault()?.JobNumber;
                        }
                    }

                    if (pColumns != null)
                    {
                        foreach (var (field, name) in pColumns)
                        {
                            dataRow[name] = row[field]?.ToString();
                        }
                    }

                    //datarow["Job No"] = (String)row[JobLink + ".JobNumber"];

                    var bHasData = false;
                    if (variables.Any())
                    {
                        var dict = Serialization.Deserialize<Dictionary<string, object>>(form.FormData);
                        foreach (var key in dict.Keys)
                        {
                            var variable = variables.FirstOrDefault(x => string.Equals(key, x.Code));
                            var type = variable?.FieldType();
                            if (variable != null)
                            {
                                var value = variable.ParseValue(dict[key]);
                                var format = variable.FormatValue(value);
                                var sKey = key.Replace("/", " ");
                                if (data.Columns.Contains(sKey))
                                {
                                    dataRow[sKey] = format;
                                    bHasData = true;
                                }
                            }
                        }
                    }
                    else
                    {
                        var dict = Serialization.Deserialize<Dictionary<Guid, object>>(form.FormData);
                        foreach (var key in dict.Keys)
                            if (data.Columns.Contains(key.ToString()))
                            {
                                dataRow[key.ToString()] = dict[key];
                                bHasData = true;
                            }
                    }


                    if (bHasData)
                        data.Rows.Add(dataRow);
                }
            }
            DataGrid.ItemsSource = data;

            IsQAForm = !variables.Any() && questions.Any();
            QAGrid.Visibility = IsQAForm ? Visibility.Visible : Visibility.Collapsed;
            DataGrid.Visibility = Visibility.Visible;
        }

        private void RefreshData<TForm>()
            where TForm : Entity, IRemotable, IPersistent, IDigitalFormInstance, new()
        {
            var formQuery = GetFormQuery<TForm>();

            var queries = new List<IKeyedQueryDef>()
                {
                    new KeyedQueryDef<QAQuestion>(new Filter<QAQuestion>(x => x.Form.ID).IsEqualTo(Form!.ID)),
                    new KeyedQueryDef<DigitalFormVariable>(
                        new Filter<DigitalFormVariable>(x => x.Form.ID).IsEqualTo(Form.ID),
                        null,
                        new SortOrder<DigitalFormVariable>(x => x.Sequence)),
                    formQuery
                };
            if (ParentType == typeof(JobITPForm))
            {
                queries.Add(new KeyedQueryDef<JobITP>(
                    new Filter<JobITP>(x => x.ID).InQuery((formQuery.Filter as Filter<JobITPForm>)!, x => x.Parent.ID),
                    new Columns<JobITP>(x => x.ID, x => x.Job.JobNumber)));
            }

            var results = Client.QueryMultiple(queries);

            var questions = results.Get<QAQuestion>().ToList<QAQuestion>();
            var variables = results.Get<DigitalFormVariable>().ToList<DigitalFormVariable>();
            var formData = results.Get(formQuery.Key);

            LoadDataIntoGrid(
                variables, questions,
                formData,
                formQuery.Columns!.ColumnNames().Where(x => x != "ID" && x.StartsWith("Parent.")).ToList(),
                ParentType == typeof(JobITP) ? results.Get<JobITP>() : null);
        }

        public void Refresh()
        {
            Progress.Show("Refreshing");
            try
            {
                Questions.Clear();
                QAGrid.Clear();
                QAGrid.LoadChecks("", Array.Empty<QAQuestion>(), new Dictionary<Guid, object>());
                DataGrid.ItemsSource = null;

                if (ParentType is null || FormType is null || Form is null || Form.ID == Guid.Empty)
                {
                    QAGrid.Visibility = Visibility.Collapsed;
                    DataGrid.Visibility = Visibility.Collapsed;
                    return;
                }

                Progress.SetMessage("Loading Data");

                var refreshMethod = typeof(DigitalFormsDashboard).GetMethod(nameof(RefreshData), BindingFlags.Instance | BindingFlags.NonPublic)!.MakeGenericMethod(FormType);
                refreshMethod.Invoke(this, Array.Empty<object?>());
            }
            finally
            {
                Progress.Close();
            }
        }

        public void Shutdown()
        {
        }

        #region DataGrid Configuration

        private void DataGrid_AutoGeneratingColumn(object sender, Syncfusion.UI.Xaml.Grid.AutoGeneratingColumnArgs e)
        {
            e.Column.TextAlignment = TextAlignment.Center;
            e.Column.HorizontalHeaderContentAlignment = HorizontalAlignment.Center;
            e.Column.ColumnSizer = GridLengthUnitType.None;

            var value = (e.Column.ValueBinding as Binding)!;
            if (value.Path.Path.Equals("ID") || value.Path.Path.Equals("Form_ID") || value.Path.Path.Equals("Parent_ID") ||
                value.Path.Path.Equals("FormData") || value.Path.Path.Equals("Location_Latitude") || value.Path.Path.Equals("Location_Longitude"))
            {
                e.Cancel = true;
            }
            else if (value.Path.Path.Equals("Location_Timestamp"))
            {
                e.Column = new GridImageColumn();
                e.Column.Width = DataGrid.RowHeight;
                e.Column.HeaderStyle = Resources["TemplateHeaderStyle"] as Style;
                e.Column.HeaderText = "";
                e.Column.Padding = new Thickness(4);
                e.Column.ValueBinding = new Binding
                {
                    Path = new PropertyPath(value.Path.Path),
                    Converter = new MileStoneImageConverter()
                };
                e.Column.MappingName = "Location.Timestamp";
            }
            else if (ParentType is not null && parentColumns.TryGetValue(ParentType, out var pColumns) && pColumns.Any(x => x.Item2.Equals(value.Path.Path)))
            {
                e.Column.ColumnSizer = GridLengthUnitType.Auto;
                e.Column.HeaderStyle = Resources["TemplateHeaderStyle"] as Style;
            }
            else if (value.Path.Path.Equals("Job No"))
            {
                e.Column.Width = 60;
                e.Column.HeaderStyle = Resources["TemplateHeaderStyle"] as Style;
            }
            else if (value.Path.Path.Equals("Description"))
            {
                e.Column.TextAlignment = TextAlignment.Left;
                e.Column.HorizontalHeaderContentAlignment = HorizontalAlignment.Left;
                e.Column.Width = 450;
                e.Column.HeaderStyle = Resources["TemplateHeaderStyle"] as Style;
            }
            else if (value.Path.Path.Equals("Completed"))
            {
                e.Column.Width = 100;
                e.Column.HeaderStyle = Resources["TemplateHeaderStyle"] as Style;
                (e.Column as GridDateTimeColumn)!.Pattern = DateTimePattern.CustomPattern;
                (e.Column as GridDateTimeColumn)!.CustomPattern = "dd MMM yy hh:mm";
            }
            else if (value.Path.Path.Equals("Completed By"))
            {
                e.Column.Width = 100;
                e.Column.HeaderStyle = Resources["TemplateHeaderStyle"] as Style;
            }
            else if (value.Path.Path.Equals("Processed"))
            {
                e.Column.Width = 100;
                e.Column.HeaderStyle = Resources["TemplateHeaderStyle"] as Style;
            }
            else
            {
                var data = DataGrid.ItemsSource as DataTable;
                //int index = data.Columns.IndexOf(e.Column.MappingName) - 2;
                //Style style = new Style(typeof(GridCell));
                //e.Column.CellStyle = style;
                e.Column.Width = 100;
                e.Column.HeaderStyle = Resources["TemplateHeaderStyle"] as Style;
                e.Column.HeaderText = QuestionCodes[e.Column.MappingName];
            }
        }

        private Entity? GetEntityForm<T>(Guid id) where T : Entity, IDigitalFormInstance, IRemotable, IPersistent, new()
        {
            var columns = new Columns<T>(x => x.ID)
                .Add(x => x.FormCompleted)
                .Add(x => x.FormData)
                .Add(x => x.Form.ID)
                .Add(x => x.Form.Description);
            if (typeof(T).HasInterface(typeof(IDigitalFormInstance<>)))
            {
                columns.Add("Parent.ID");
            }

            return new Client<T>().Query(
                new Filter<T>(x => x.ID).IsEqualTo(id),
                columns).Rows.FirstOrDefault()?.ToObject<T>();
        }

        private void DataGrid_CellDoubleTapped(object sender, Syncfusion.UI.Xaml.Grid.GridCellDoubleTappedEventArgs e)
        {
            if (e.RowColumnIndex.RowIndex == 0)
                return;
            var table = (DataGrid.ItemsSource as DataTable)!;
            var formid = (Guid)table.Rows[e.RowColumnIndex.RowIndex - 1]["Form_ID"];
            var formdata = (string)table.Rows[e.RowColumnIndex.RowIndex - 1]["FormData"];
            var id = (Guid)table.Rows[e.RowColumnIndex.RowIndex - 1]["ID"];

            if (FormType is null) return;

            if (IsQAForm)
            {
                var formData = Serialization.Deserialize<Dictionary<string, object>>(formdata);
                var values = new Dictionary<Guid, object>();
                foreach(var (idStr, value) in formData)
                {
                    if(Guid.TryParse(idStr, out var codeID))
                    {
                        values[codeID] = value;
                    }
                }

                QAGrid.Clear();
                QAGrid.LoadChecks(Form!.Description, Questions, values);
                QAGrid.CollapseMargins();
                return;
            }

            var entityForm = typeof(DigitalFormsDashboard)
                .GetMethod(nameof(GetEntityForm), BindingFlags.NonPublic | BindingFlags.Instance)!
                .MakeGenericMethod(FormType)
                .Invoke(this, new object[] { id }) as IDigitalFormInstance;
            if (entityForm is not null)
            {
                if (DynamicFormEditWindow.EditDigitalForm(entityForm, out var dataModel))
                {
                    dataModel.Update(null);
                    /*typeof(QADashboard)
                        .GetMethod(nameof(SaveEntityForm), System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance)!
                        .MakeGenericMethod(formType)
                        .Invoke(this, new object[] { entityForm });*/
                    Refresh();
                }
            }
        }

        private void DataGrid_CellTapped(object sender, Syncfusion.UI.Xaml.Grid.GridCellTappedEventArgs e)
        {
            if (e.RowColumnIndex.ColumnIndex == 0)
            {
                var timestamp = (DateTime)(e.Record as DataRowView)!.Row["Location_Timestamp"];
                var latitude = (double)(e.Record as DataRowView)!.Row["Location_Latitude"];
                var longitude = (double)(e.Record as DataRowView)!.Row["Location_Longitude"];

                var form = new MapForm(latitude, longitude, timestamp);
                form.ShowDialog();
            }
        }

        #endregion
    }
}