using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media.Imaging;
using Comal.Classes;
using InABox.Clients;
using InABox.Core;
using InABox.DynamicGrid;
using InABox.WPF;
using NPOI.SS.Formula.Functions;
using Syncfusion.UI.Xaml.Charts;

namespace PRSDesktop
{

    public delegate JobPanelSettings OnGetJobPanelSettings();
    
    public class JobDocumentSetMilestoneTasks : DynamicDataGrid<JobDocumentSetMileStoneKanban>
    {
        public Guid MileStoneID { get; set; }
        public Guid JobID { get; set; }

        public event OnGetJobPanelSettings GetJobPanelSettings;
        
        public JobDocumentSetMilestoneTasks()
        {
            Options.BeginUpdate()
                .Clear()
                .Add(DynamicGridOption.RecordCount)
                .EndUpdate();

            HiddenColumns.Add(x => x.Kanban.ID);
            HiddenColumns.Add(x => x.Kanban.Summary);
            HiddenColumns.Add(x => x.Entity.DocumentSet.Code);
            HiddenColumns.Add(x => x.Entity.Type.Code);
            HiddenColumns.Add(x => x.Entity.Revision);

            // HiddenColumns.Add(x => x.Kanban.Completed);
            // ActionColumns.Add(new DynamicImageColumn(StatusImage));
            ActionColumns.Add(new DynamicMenuColumn(TaskMenuOpening));

            AddButton("", PRSDesktop.Resources.add.AsBitmapImage(), AddTask);
            AddButton("", PRSDesktop.Resources.pencil.AsBitmapImage(), EditTask);
            AddButton("", PRSDesktop.Resources.delete.AsBitmapImage(), DeleteTask, DynamicGridButtonPosition.Right);
        }
        
        private void TaskMenuOpening(DynamicMenuColumn column, CoreRow? row)
        {
            var status = column.AddItem("Set Status", PRSDesktop.Resources.kanban, null);
            column.AddItem(Kanban.CategoryToString(KanbanCategory.Open), null, (r) => SetTaskStatus(r,KanbanCategory.Open,false), status);
            column.AddItem(Kanban.CategoryToString(KanbanCategory.InProgress), null, (r) => SetTaskStatus(r,KanbanCategory.InProgress,false), status);
            column.AddItem(Kanban.CategoryToString(KanbanCategory.Waiting), null, (r) => SetTaskStatus(r,KanbanCategory.Waiting,false), status);
            column.AddItem(Kanban.CategoryToString(KanbanCategory.Complete), null, (r) => SetTaskStatus(r,KanbanCategory.Complete,true), status);
            column.AddSeparator();
            column.AddItem("Email Task", PRSDesktop.Resources.email, EmailTask);

        }
        
        private void SetTaskStatus(CoreRow row, KanbanCategory category, bool complete)
        {
            using (new WaitCursor())
            {
                var kanban = new Client<Kanban>().Load(
                    new Filter<Kanban>(x => x.ID).IsEqualTo(row.Get<JobDocumentSetMileStoneKanban, Guid>(c => c.Kanban.ID))).FirstOrDefault();
                if (kanban == null)
                {
                    MessageBox.Show("Cannot Load Kanban");
                    return;
                }

                if (Kanban.CategoryToString(category) != kanban.Category)
                {
                    kanban.Category = Kanban.CategoryToString(category);
                    new Client<Kanban>().Save(kanban, "Updated from Job Document Milestone List");
                    DoChanged();
                    Refresh(false,true);
                }
            }
        }
        
        private void EmailTask(CoreRow? row)
        {
            var files = new Client<Document>().Query(
                new Filter<Document>(x => x.ID).InQuery(new Filter<JobDocumentSetMileStoneFile>(x => x.EntityLink.ID).IsEqualTo(MileStoneID),
                    x => x.DocumentLink.ID),
                new Columns<Document>(x=>x.FileName,x=>x.Data)
            ).ToDictionary<Document, String, byte[]>(c => c.FileName, c => c.Data);
            
            StringBuilder subject = new StringBuilder();
            subject.AppendFormat("{0}: ", row.Get<JobDocumentSetMileStoneKanban, int>(x => x.Kanban.Number));

            subject.AppendFormat("{0}", row.Get<JobDocumentSetMileStoneKanban, String>(x => x.Kanban.Title));

            StringBuilder body = new StringBuilder();
            body.AppendLine("Dear ,");
            body.AppendLine();
            body.AppendLine("Some information is required regarding the attached documents:");
            body.AppendLine();
            body.AppendLine(row.Get<JobDocumentSetMileStoneKanban, String>(x => x.Kanban.Summary));
            body.AppendLine();
            body.AppendLine("Regards,");
            body.AppendLine(App.EmployeeName);
            
            EmailUtils.CreateEMLFile(
                files,
                "",
                subject.ToString(),
                body.ToString()
            );
        }

        protected override DynamicGridColumns LoadColumns()
        {
            return new DynamicGridColumns()
            {
                new DynamicGridColumn()
                {
                    ColumnName = CoreUtils.GetFullPropertyName<JobDocumentSetMileStoneKanban, int>(x => x.Kanban.Number, "."), 
                    Caption = "#",
                    Width = 50,
                    Alignment = Alignment.MiddleCenter
                },
                new DynamicGridColumn()
                {
                    ColumnName = CoreUtils.GetFullPropertyName<JobDocumentSetMileStoneKanban, String>(x => x.Kanban.Title, "."), 
                    Caption = "Title",
                    Width = 0
                },
                new DynamicGridColumn()
                {
                    ColumnName = CoreUtils.GetFullPropertyName<JobDocumentSetMileStoneKanban, String>(x => x.Kanban.Category, "."), 
                    Caption = "Status",
                    Width = 70,
                    Alignment = Alignment.MiddleCenter
                }
            };
        }

        // private readonly BitmapImage _status = PRSDesktop.Resources.tick.AsBitmapImage();
        //
        // private BitmapImage? StatusImage(CoreRow? arg)
        // {
        //     return arg == null
        //         ? _status
        //         : arg.Get<JobDocumentSetMileStoneKanban, DateTime>(c => c.Kanban.Completed).IsEmpty()
        //             ? null
        //             : _status;
        // }

        private bool AddTask(Button arg1, CoreRow[] arg2)
        {
            if (MileStoneID == Guid.Empty)
                return false;
            
            var kg = DynamicGridUtils.CreateDynamicGrid(typeof(DynamicDataGrid<>), typeof(Kanban));
            kg.OnAfterSave += (editor, items) =>
            {
                List<JobDocumentSetMileStoneKanban> msks = new List<JobDocumentSetMileStoneKanban>();
                foreach (Kanban item in items.Cast<Kanban>())
                {
                    JobDocumentSetMileStoneKanban msk = new JobDocumentSetMileStoneKanban();
                    msk.Kanban.ID = item.ID;
                    msk.Entity.ID = MileStoneID;
                    msks.Add(msk);
                }

                new Client<JobDocumentSetMileStoneKanban>().Save(msks, "");
            };
            
            var kanban = new Kanban();
            kanban.EmployeeLink.ID = App.EmployeeID;
            kanban.ManagerLink.ID = App.EmployeeID;
            kanban.JobLink.ID = JobID;
            kanban.Category = Kanban.CategoryToString(KanbanCategory.Open);
            var settings = GetJobPanelSettings?.Invoke();
            kanban.Type.ID = settings?.DocumentMilestoneKanbanType.ID ?? Guid.Empty;

            var milestone = new Client<JobDocumentSetMileStone>().Query(new Filter<JobDocumentSetMileStone>(x => x.ID).IsEqualTo(MileStoneID),
                new Columns<JobDocumentSetMileStone>(x => x.DocumentSet.Code).Add(x => x.Type.Code).Add(x => x.Revision)
            ).ToTuples<JobDocumentSetMileStone, String, String, String>(x => x.DocumentSet.Code, x => x.Type.Code, x => x.Revision).FirstOrDefault();
            if (milestone != null)
            {
                kanban.Title = String.Format(
                    "{0}: {1} ({2}{3})",
                    settings?.DocumentMilestoneKanbanType.Code,
                    milestone.Item1,
                    milestone.Item2,
                    !String.IsNullOrWhiteSpace(milestone.Item3) ? $" Rev {milestone.Item3}" : ""
                );
            }

            if (kg.EditItems(new Kanban[] { kanban }) == true)
            {
                DoChanged();
                return true;
            }

            return false;
        }
        
        private bool EditTask(Button arg1, CoreRow[] arg2)
        {
            if (MileStoneID == Guid.Empty)
                return false;
            if (!SelectedRows.Any())
                return false;
            var ids = SelectedRows.ToArray().Select(r=>r.Get<JobDocumentSetMileStoneKanban,Guid>(x=>x.Kanban.ID)).ToArray();
            var kanbans = new Client<Kanban>().Load(new Filter<Kanban>(x => x.ID).InList(ids));
            var kg = DynamicGridUtils.CreateDynamicGrid(typeof(DynamicDataGrid<>), typeof(Kanban));
            if (kg.EditItems(kanbans) == true)
            {
                DoChanged();
                return true;
            }
            return false;
        }
        
        private bool DeleteTask(Button arg1, CoreRow[] arg2)
        {
            if (MileStoneID == Guid.Empty)
                return false;
            if (!SelectedRows.Any())
                return false;

            if (MessageBox.Show("This will unlink the selected task from this milestone, but leave the task active.\n\nDo You wish to continue?",
                    "Unlink Task", MessageBoxButton.YesNo) != MessageBoxResult.Yes)
                return false;

            var ids = SelectedRows.ToArray().Select(r=>r.Get<JobDocumentSetMileStoneKanban,Guid>(x=>x.ID)).ToArray();
            var msks = ids.Select(x => new JobDocumentSetMileStoneKanban() { ID = x }).ToArray();
            new Client<JobDocumentSetMileStoneKanban>().Delete(msks, "Removed from Meeting");
            DoChanged();
            return true;

        }
        
        protected override void Reload(Filters<JobDocumentSetMileStoneKanban> criteria, Columns<JobDocumentSetMileStoneKanban> columns, ref SortOrder<JobDocumentSetMileStoneKanban> sort,
            Action<CoreTable, Exception> action)
        {
            criteria.Add(MileStoneID == Guid.Empty
                ? new Filter<JobDocumentSetMileStoneKanban>(x=>x.Entity.ID).None()
                : new Filter<JobDocumentSetMileStoneKanban>(x => x.Entity.ID).IsEqualTo(MileStoneID));
            base.Reload(criteria, columns, ref sort, action);
        }
        
    }
}