using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using System.Globalization;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
using System.Text.RegularExpressions;
using System.Threading;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Input;
using Comal.Classes;
using InABox.Clients;
using InABox.Core;
using InABox.DynamicGrid;
using InABox.Reports;
using InABox.Reports.Common;
using InABox.WPF;
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 SelectionChangedEventArgs = System.Windows.Controls.SelectionChangedEventArgs;

namespace PRSDesktop
{
    internal class MileStoneImageConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return Equals(value, DateTime.MinValue) ? null : Resources.milestone.AsBitmapImage();
        }

        public object ConvertBack(object value, Type targetType,
            object parameter, CultureInfo culture)
        {
            return null;
        }
    }

    /// <summary>
    ///     Interaction logic for QADashboard.xaml
    /// </summary>
    public partial class QADashboard : UserControl, IPanel<DigitalForm>
    {
        private bool _changing;

        private DateTime _from;

        private string _search = "";
        private DateTime _to;

        private CoreTable allforms;

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

        public bool IsReady { get; set; }

        public event DataModelUpdateEvent OnUpdateDataModel;

        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 Type? parentType;
        private Type? formType;

        #region DataGrid Configuration

        private void DataGrid_AutoGeneratingColumn(object sender, 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 (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];
            }
        }

        #endregion

        private Entity? GetEntityForm<T>(Guid id) where T : Entity, IDigitalFormInstance, IRemotable, IPersistent, new()
        {
            var columns = DynamicFormEditWindow.FormColumns<T>();

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

        private void SaveEntityForm<T>(T entityForm) where T : Entity, IDigitalFormInstance, IRemotable, IPersistent, new()
        {
            new Client<T>().Save(entityForm, "Edited by user");
        }

        private void DataGrid_CellDoubleTapped(object sender, 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 == null) return;
            var entityForm = typeof(QADashboard)
                .GetMethod(nameof(GetEntityForm), System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance)!
                .MakeGenericMethod(formType)
                .Invoke(this, new object[] { id }) as IDigitalFormInstance;
            if (entityForm != 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();
                }
            }
            /*
            var query = new MultiQuery();

            query.Add(
                new QueryDef<DigitalFormVariable>(
                    new Filter<DigitalFormVariable>(x => x.Form.ID).IsEqualTo(formid),
                    null,
                    null
                ),
                typeof(DigitalFormVariable)
            );

            query.Add(
                new QueryDef<DigitalFormLayout>(
                    new Filter<DigitalFormLayout>(x => x.Form.ID).IsEqualTo(formid).And(x => x.Active).IsEqualTo(true),
                    null,
                    null
                ),
                typeof(DigitalFormLayout)
            );

            query.Query();

            var variables = query.Get(typeof(DigitalFormVariable)).Rows.Select(x => x.ToObject<DigitalFormVariable>());
            var layout = query.Get(typeof(DigitalFormLayout)).Rows.FirstOrDefault()?.ToObject<DigitalFormLayout>();

            if (layout == null)
            {
                MessageBox.Show("No Active Layouts Found!");
                return;
            }

            var form = new DynamicFormWindow();
            form.Designing = false;
            form.HideViewButton = true;
            form.ReadOnly = true;
            form.Variables = variables.ToArray();
            form.Type = layout.Type;

            var f = new DFLayout();
            if (!string.IsNullOrWhiteSpace(layout.Layout))
            {
                f.LoadLayout(layout.Layout);
            }
            else
            {
                f = new DFLayout();
                f.RowHeights.Add("Auto");
                f.ColumnWidths.AddRange(new[] { "*", "Auto" });
            }

            f.LoadVariables(variables);

            form.Form = f;

            if (!string.IsNullOrWhiteSpace(formdata))
                form.Values = Serialization.Deserialize<Dictionary<string, object>>(formdata);

            form.ShowDialog();*/
        }

        private void DataGrid_CellTapped(object sender, 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();
            }
        }

        #region IPanel Interface

        public QADashboard()
        {
            _from = DateTime.Today;
            _to = DateTime.Today;

            InitializeComponent();
            SetDates(_from, _to, false);
        }


        public void CreateToolbarButtons(IPanelHost host)
        {
        }

        public void Setup()
        {
            var query = new MultiQuery();
            query.Add(
                new QueryDef<DigitalForm>(
                    new Filter<DigitalForm>(x => x.Active).IsEqualTo(true),
                    null,
                    null
                ),
                typeof(DigitalForm)
            );
            query.Add(
                new QueryDef<Job>(
                    LookupFactory.DefineFilter<Job>(),
                    new Columns<Job>(x => x.ID, x => x.JobNumber, x => x.Name),
                    null
                ),
                typeof(Job)
            );
            query.Query();

            allforms = query.Get(typeof(DigitalForm));


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

            Category.ItemsSource = cats.AsTable("AppliesTo").ToDictionary("AppliesTo", "Display");

            var jobs = query.Get(typeof(Job));
            var alljobs = jobs.NewRow();
            alljobs.Set<Job, Guid>(x => x.ID, Guid.Empty);
            alljobs.Set<Job, string>(x => x.JobNumber, "ALL");
            alljobs.Set<Job, string>(x => x.Name, "All Jobs");
            jobs.Rows.Insert(0, alljobs);
            Jobs.ItemsSource = jobs.ToDictionary(x => x.ID, new Expression<Func<Job, object>>[] { x => x.JobNumber, x => x.Name }, x => x.JobNumber);

            //Dictionary<Guid, String> joblist = new Dictionary<Guid, string>() { { Guid.Empty, "All Jobs" } };
            //CoreTable jobs = new Client<Job>().Query(
            //   LookupFactory.DefineFilter<Job>(),
            //   LookupFactory.DefineColumns<Job>(),
            //   LookupFactory.DefineSort<Job>()
            //);
            //foreach (var row in jobs.Rows)
            //{
            //    //if (row.Get<Employee, String>(x => x.Group.Description).Equals("FACTORY"))
            //    joblist[row.Get<Job, Guid>(x => x.ID)] = String.Format("{0} - {1}", row.Get<Job, String>(x => x.JobNumber), row.Get<Job, String>(x => x.Name));
            //}
            //Jobs.ItemsSource = joblist;
        }

        public void Shutdown()
        {
        }

        public 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 "";
        }

        public Type CategoryToType(string category)
        {
            var instances = CoreUtils.TypeList(
                AppDomain.CurrentDomain.GetAssemblies(),
                x => !x.IsAbstract && x.GetInterfaces().Contains(typeof(IDigitalFormInstance))
            ).ToArray();

            foreach (var instance in instances)
            {
                var interfaces = instance.GetInterfaces()
                    .Where(x => x.IsGenericType && x.GetGenericTypeDefinition().Equals(typeof(IDigitalFormInstance<>)));
                var links = interfaces.Select(x => x.GenericTypeArguments.First());
                var link = links.FirstOrDefault(l => l.GetInheritedGenericTypeArguments().Any(i => string.Equals(i.Name, category)));
                if (link != null)
                {
                    return instance;
                }
            }

            return null;
        }

        public void Refresh()
        {
            Progress.Show("Refreshing");
            try
            {
                qaGrid.Clear();
                qaGrid.LoadChecks("", new QAQuestion[] { }, new Dictionary<Guid, object>());
                dataGrid.ItemsSource = null;

                var category = Category.SelectedValue as string;


                if (string.IsNullOrWhiteSpace(category))
                {
                    DigitalFormsDock.Visibility = Visibility.Collapsed;

                    qaGrid.Visibility = Visibility.Collapsed;
                    dataGrid.Visibility = Visibility.Collapsed;
                    return;
                }

                var form = (KeyValuePair<Guid, string>)Form.SelectedItem;
                if (form.Key == Guid.Empty)
                {
                    DigitalFormsDock.Visibility = Visibility.Collapsed;
                    qaGrid.Visibility = Visibility.Collapsed;
                    dataGrid.Visibility = Visibility.Collapsed;
                    return;
                }

                var type = CategoryToType(category);
                if (type == null)
                    return;
                formType = type;

                parentType = CoreUtils.TypeList(
                    AppDomain.CurrentDomain.GetAssemblies(),
                    x => !x.IsAbstract && string.Equals(x.Name, category)
                ).FirstOrDefault();
                var parentcols = LookupFactory.DefineColumns(parentType);

                Progress.SetMessage("Loading Data");

                var jobid = Jobs.SelectedValue != null ? (Guid)Jobs.SelectedValue : Guid.Empty;
                var isEntityForm = type.IsSubclassOfRawGeneric(typeof(EntityForm<,>));

                var query = new MultiQuery();
                query.Add(
                    new QueryDef<QAQuestion>(
                        new Filter<QAQuestion>(x => x.Form.ID).IsEqualTo(form.Key),
                        null,
                        null
                    ),
                    typeof(QAQuestion)
                );
                query.Add(
                    new QueryDef<DigitalFormVariable>(
                        new Filter<DigitalFormVariable>(x => x.Form.ID).IsEqualTo(form.Key),
                        null,
                        new SortOrder<DigitalFormVariable>(x => x.Sequence)
                    ),
                    typeof(DigitalFormVariable)
                );

                var columns = LookupFactory.DefineColumns(type);
                var sort = LookupFactory.DefineSort(type);

                var JobLink = GetJobLink("", type);

                var filtertype = typeof(Filter<>).MakeGenericType(type);
                var filter = Activator.CreateInstance(typeof(Filter<>).MakeGenericType(type));
                CoreUtils.SetPropertyValue(filter, "Expression", CoreUtils.GetMemberExpression(type, "FormCompleted"));
                CoreUtils.SetPropertyValue(filter, "Operator", Operator.IsGreaterThanOrEqualTo);
                CoreUtils.SetPropertyValue(filter, "Value", _from);

                var ands = filtertype.GetProperty("Ands").GetValue(filter) as IList;

                var to = Activator.CreateInstance(filtertype);
                CoreUtils.SetPropertyValue(to, "Expression", CoreUtils.GetMemberExpression(type, "FormCompleted"));
                CoreUtils.SetPropertyValue(to, "Operator", Operator.IsLessThan);
                CoreUtils.SetPropertyValue(to, "Value", _to.AddDays(1));
                ands.Add(to);

                var formid = Activator.CreateInstance(filtertype);
                CoreUtils.SetPropertyValue(formid, "Expression", CoreUtils.GetMemberExpression(type, "Form.ID"));
                CoreUtils.SetPropertyValue(formid, "Operator", Operator.IsEqualTo);
                CoreUtils.SetPropertyValue(formid, "Value", form.Key);
                ands.Add(formid);

                if (jobid != Guid.Empty)
                {
                    var job = Activator.CreateInstance(filtertype);
                    CoreUtils.SetPropertyValue(job, "Expression", CoreUtils.GetMemberExpression(type, JobLink + ".ID"));
                    CoreUtils.SetPropertyValue(job, "Operator", Operator.IsEqualTo);
                    CoreUtils.SetPropertyValue(job, "Value", jobid);
                    ands.Add(job);
                }

                var colstype = typeof(Columns<>).MakeGenericType(type);
                var cols = Activator.CreateInstance(colstype) as IColumns;
                cols.Add("ID");

                foreach (var col in parentcols.ColumnNames())
                    cols.Add("Parent." + col);
                if(parentColumns.TryGetValue(parentType, out var pColumns))
                {
                    foreach(var (field, name) in pColumns)
                    {
                        cols.Add(field);
                    }
                }

                cols.Add("Form.ID");
                cols.Add("FormData");
                cols.Add("FormCompleted");
                cols.Add("FormCompletedBy.UserID");

                if(isEntityForm)
                    cols.Add("Processed");
                cols.Add("Location.Timestamp");
                cols.Add("Location.Latitude");
                cols.Add("Location.Longitude");
                if (!string.IsNullOrWhiteSpace(JobLink))
                    cols.Add(JobLink + ".JobNumber");

                var querytype = typeof(QueryDef<>).MakeGenericType(type);
                query.Add(Activator.CreateInstance(querytype, filter, cols, sort) as IQueryDef, type);

                if(parentType == typeof(JobITP))
                {
                    query.Add(
                        new Filter<JobITP>(x => x.ID).InQuery(filter as Filter<JobITPForm>, x => x.Parent.ID),
                        new Columns<JobITP>(x => x.ID, x => x.Job.JobNumber));
                }

                query.Query();


                var questions =
                    query.Get(typeof(QAQuestion)); // new Client<QAQuestion>().Query(new Filter<QAQuestion>(x => x.QAForm.ID).IsEqualTo(form.Key));
                var variables = query.Get(typeof(DigitalFormVariable)).Rows.Select(x => x.ToObject<DigitalFormVariable>()).ToArray();
                var formdata = query.Get(type);

                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 (pColumns != null)
                {
                    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.Rows.Any())
                {
                    Progress.SetMessage("Loading Checks");
                    qaGrid.Clear();
                    qaGrid.LoadChecks(form.Value, questions.Rows.Select(x => x.ToObject<QAQuestion>()), new Dictionary<Guid, object>());
                    qaGrid.CollapseMargins();

                    var i = 1;
                    foreach (var row in questions.Rows)
                    {
                        var id = row.Get<QAQuestion, Guid>(x => x.ID).ToString();
                        if (!row.Get<QAQuestion, QAAnswer>(x => x.Answer).Equals(QAAnswer.Comment))
                        {
                            data.Columns.Add(id, typeof(string));
                            var code = row.Get<QAQuestion, string>(x => x.Code);
                            QuestionCodes[id] = string.IsNullOrEmpty(code) ? string.Format("{0}.", i) : code;
                            i++;
                        }
                    }
                }

                foreach (var row in formdata.Rows)
                {
                    var qadata = row["FormData"] != null ? row["FormData"].ToString() : "";
                    if (!string.IsNullOrWhiteSpace(qadata))
                    {
                        var datarow = data.NewRow();

                        datarow["ID"] = (Guid)row["ID"];
                        datarow["Form_ID"] = (Guid)row["Form.ID"];
                        datarow["Parent_ID"] = (Guid)row["Parent.ID"];
                        datarow["Location_Timestamp"] = (DateTime)row["Location.Timestamp"];
                        datarow["Location_Latitude"] = (double)row["Location.Latitude"];
                        datarow["Location_Longitude"] = (double)row["Location.Longitude"];
                        datarow["FormData"] = (string)row["FormData"];

                        var desc = new List<string>();
                        foreach (var col in parentcols.ColumnNames().Where(x => x != "ID"))
                        {
                            var val = row["Parent." + col];
                            if (val != null && val.GetType() != typeof(Guid))
                                desc.Add(val.ToString());
                        }

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

                        datarow["Completed"] = (DateTime)row["FormCompleted"];
                        datarow["Completed By"] = (string)row["FormCompletedBy.UserID"];

                        if(isEntityForm)
                            datarow["Processed"] = (bool)row["Processed"];

                        if(parentType == typeof(JobITP))
                        {
                            var jobITP = query.Get<JobITP>().Rows.FirstOrDefault(x => (Guid)x["ID"] == (Guid)row["Parent.ID"]);
                            datarow["Job No"] = jobITP?["Job.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>>(qadata);
                            foreach (var key in dict.Keys)
                            {
                                var variable = variables.FirstOrDefault(x => string.Equals(key, x.Code));
                                if (variable != null)
                                {
                                    var value = variable.ParseValue(dict[key]);
                                    object 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>>(qadata);
                            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;

                qaGrid.Visibility = !variables.Any() && questions.Rows.Any() ? Visibility.Visible : Visibility.Collapsed;
                dataGrid.Visibility = Visibility.Visible;
            }
            finally
            {
                Progress.Close();
            }
        }

        public string? SectionName
        {
            get {
                var form = (KeyValuePair<Guid, string>)Form.SelectedItem;
                if (Category.SelectedValue != null && form.Key != Guid.Empty)
                {
                    return form.Key.ToString();
                }
                return "Digital Forms";
            }
        }

        public DataModel DataModel(Selection selection)
        {
            Type formtype = CategoryToType(Category.SelectedValue as String);

            var form = (KeyValuePair<Guid, string>)Form.SelectedItem;
            if (formtype != null && form.Key != Guid.Empty)
            {
                IFilter filter;
                switch (selection)
                {
                    case Selection.Selected:
                        var formids = dataGrid.SelectedItems.Select(x => (x as DataRowView).Row["ID"]).ToArray();

                        filter = (Activator.CreateInstance(typeof(Filter<>).MakeGenericType(formtype)) as IFilter)!;
                        filter.Expression = CoreUtils.CreateMemberExpression(formtype, "ID");
                        filter.Operator = Operator.InList;
                        filter.Value = formids;
                        break;
                    case Selection.All:
                        filter = Filter.Create(formtype).All();
                        break;
                    case Selection.None:
                    default:
                        filter = (Activator.CreateInstance(typeof(Filter<>).MakeGenericType(formtype)) as IFilter)!.None();
                        break;
                }

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

            return new AutoDataModel<DigitalForm>(new Filter<DigitalForm>().None());
        }

        public Dictionary<string, object[]> Selected()
        {
            return new Dictionary<string, object[]>();
        }

        public void Heartbeat(TimeSpan time)
        {
        }

        #endregion

        #region Toolbar Handling

        private void Category_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            _changing = true;

            var category = Category.SelectedValue as string;

            var type = CategoryToType(category);
            var JobLink = type != null ? GetJobLink("", type) : "";
            if (string.IsNullOrWhiteSpace(JobLink))
            {
                Jobs.SelectedValue = Guid.Empty;
                Jobs.IsEnabled = false;
            }
            else
            {
                Jobs.IsEnabled = true;
            }


            var forms = new Dictionary<Guid, string> { { Guid.Empty, "" } };

            if (!string.IsNullOrWhiteSpace(category))
            {
                forms[Guid.Empty] = "Select Form";
                var rows = allforms.Rows.Where(r => string.Equals(r.Get<DigitalForm, string>(c => c.AppliesTo), category));
                foreach (var row in rows)
                    forms[row.Get<DigitalForm, Guid>(x => x.ID)] = row.Get<DigitalForm, string>(x => x.Description);
            }


            Form.ItemsSource = forms;

            _changing = false;
            Form.SelectedIndex = 0;
            Form.IsEnabled = !string.IsNullOrWhiteSpace(category);

            OnUpdateDataModel?.Invoke(SectionName, DataModel(Selection.None));
        }

        private void Form_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (IsReady && !_changing)
            {
                Refresh();
                OnUpdateDataModel?.Invoke(SectionName, DataModel(Selection.None));
            }
        }

        private void Jobs_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (IsReady && !_changing)
                Refresh();
        }

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

        private void SetDates(DateTime? from, DateTime? to, bool enable)
        {
            if (_changing)
                return;
            _changing = true;

            _from = from.HasValue ? from.Value : DateTime.Today;
            FromDate.SelectedDate = from;
            FromDate.IsEnabled = enable;

            _to = to.HasValue ? to.Value : DateTime.Today;
            ToDate.SelectedDate = to;
            ToDate.IsEnabled = enable;

            _changing = false;
            if (!enable)
                Refresh();
        }

        private void DateRange_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (!IsReady)
                return;

            if (DateRange.SelectedIndex == 0) // Week To Date
                SetDates(DateTime.Today, DateTime.Today, false);
            else if (DateRange.SelectedIndex == 1) // Week To Date
                SetDates(DateTime.Today.AddDays(-1), DateTime.Today.AddDays(-1), false);
            else if (DateRange.SelectedIndex == 2) // Week To Date
                SetDates(DateTime.Today.AddDays(0 - WeekDay(DateTime.Today)), DateTime.Today, false);
            else if (DateRange.SelectedIndex == 3) // Last 7 Days
                SetDates(DateTime.Today.AddDays(-6), DateTime.Today, false);
            else if (DateRange.SelectedIndex == 4) // Month To Date
                SetDates(new DateTime(DateTime.Today.Year, DateTime.Today.Month, 1), DateTime.Today, false);
            else if (DateRange.SelectedIndex == 5) // Last 30 days
                SetDates(DateTime.Today.AddDays(-29), DateTime.Today, false);
            else if (DateRange.SelectedIndex == 6) // Year To Date
                SetDates(new DateTime(DateTime.Today.Year, 1, 1), DateTime.Today, false);
            else if (DateRange.SelectedIndex == 7) // Last 12 Months
                SetDates(DateTime.Today.AddYears(-1).AddDays(1), DateTime.Today, false);
            else if (DateRange.SelectedIndex == 8) // Custom
                SetDates(FromDate.SelectedDate.Value, ToDate.SelectedDate.Value, true);
        }

        private void FromDate_SelectedDateChanged(object sender, SelectionChangedEventArgs e)
        {
            if (IsReady && !_changing)
            {
                _from = FromDate.SelectedDate.Value.Date;
                Refresh();
            }
        }

        private void ToDate_SelectedDateChanged(object sender, SelectionChangedEventArgs e)
        {
            if (IsReady && !_changing)
            {
                _to = ToDate.SelectedDate.Value.Date;
                Refresh();
            }
        }

        private void Search_KeyUp(object sender, KeyEventArgs e)
        {
            if (string.IsNullOrWhiteSpace(Search.Text) || e.Key == Key.Return)
            {
                _search = Search.Text;
                Refresh();
            }
        }

        private void Export_Click(object sender, RoutedEventArgs e)
        {
            var cat = Category.SelectedValue as string;
            //KeyValuePair<Type, String> cat = (KeyValuePair<Type, String>)Category.SelectedItem;
            var form = (KeyValuePair<Guid, string>)Form.SelectedItem;
            var formname = Regex.Replace(form.Value, "[^ a-zA-Z0-9]", string.Empty);
            var filename = string.Format("{0} - {1} - {2:yyyy-MM-dd} - {3:yyyy-MM-dd}.xlsx", cat, formname, FromDate.SelectedDate,
                ToDate.SelectedDate);

            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.Key));
            sheet.Range[1, 1].Text = form.Value;
            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));
            }
        }

        #endregion

    }
}