using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
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;

namespace PRSDesktop
{
    public class EquipmentGrid : DynamicDataGrid<Equipment>
    {
        private readonly BitmapImage docs = PRSDesktop.Resources.doc_misc.AsBitmapImage();

        private readonly BitmapImage specification = PRSDesktop.Resources.doc_pdf.AsBitmapImage();

        public EquipmentGrid()
        {
            Options.AddRange(DynamicGridOption.RecordCount, DynamicGridOption.SelectColumns, DynamicGridOption.FilterRows);

            ActionColumns.Add(new DynamicActionColumn(SpecificationImage, ShowSpecificationSheet) { Position = DynamicActionColumnPosition.Start });
            //HiddenColumns.Add(x => x.Specification.FileName);
            HiddenColumns.Add(x => x.SpecificationSheet.ID);

            ActionColumns.Add(new DynamicScheduleEditorColumn<Equipment>());
            HiddenColumns.Add(x => x.ActiveSchedules);

            ActionColumns.Add(new DynamicActionColumn(DocumentsImage, DocumentsClick));
            HiddenColumns.Add(x => x.Documents);

            ActionColumns.Add(new DynamicMapColumn<Equipment>(this, x => x.TrackerLink.Location));

            AddButton("Duplicate", PRSDesktop.Resources.copy.AsBitmapImage(), DuplicateEquipment);
        }

        private bool DocumentsClick(CoreRow arg)
        {
            if (arg == null)
                return false;

            var docs = new List<IEntityDocument>();
            using (new WaitCursor())
            {
                var deliveryid = arg.Get<Delivery, Guid>(x => x.ID);
                var table = new Client<EquipmentDocument>().Query(
                    new Filter<EquipmentDocument>(x => x.EntityLink.ID).IsEqualTo(deliveryid)
                );
                foreach (var row in table.Rows)
                    docs.Add(row.ToObject<EquipmentDocument>());
            }

            if (docs.Any())
            {
                var editor = new DocumentEditor(docs.ToArray());
                editor.PrintAllowed = true;
                editor.SaveAllowed = true;
                editor.ShowDialog();
            }
            else
            {
                MessageBox.Show("No Documents Available!");
            }

            return false;
        }

        private BitmapImage DocumentsImage(CoreRow arg)
        {
            if (arg == null)
                return docs;
            return arg.Get<Equipment, int>(x => x.Documents) > 0 ? docs : null;
        }

        private bool DuplicateEquipment(Button sender, CoreRow[] rows)
        {
            if (rows.Length != 1)
            {
                MessageBox.Show("Please select one equipment item to duplicate!");
                return false;
            }

            var row = rows.First();

            var res = MessageBox.Show("Do you wish to copy the attached documents along with this item?", "Copy Documents",
                MessageBoxButton.YesNoCancel);
            if (res == MessageBoxResult.Cancel)
                return false;

            Progress.Show("");
            var equipment = new Client<Equipment>().Load(new Filter<Equipment>(x => x.ID).IsEqualTo(row.Get<Equipment, Guid>(x => x.ID)))
                .FirstOrDefault();
            Progress.SetMessage("Duplicating Equipment");

            var id = equipment.ID;
            equipment.ID = Guid.Empty;
            equipment.Code = equipment.Code + " - COPY";
            equipment.ActiveSchedules = 0;
            equipment.CommitChanges();
            new Client<Equipment>().Save(equipment, "Equipment Item Duplicated");

            Progress.SetMessage("Duplicating Schedules");
            var schedules = new Client<Schedule>().Load(new Filter<Schedule>(x => x.DocumentID).IsEqualTo(id));
            foreach (var schedule in schedules)
            {
                schedule.ID = Guid.Empty;
                schedule.DocumentID = equipment.ID;
                schedule.CommitChanges();
            }

            new Client<Schedule>().Save(schedules, "Equipment Item Duplicated");

            if (res == MessageBoxResult.Yes)
            {
                Progress.SetMessage("Duplicating Document References");
                var docs = new Client<EquipmentDocument>().Load(new Filter<EquipmentDocument>(x => x.EntityLink.ID).IsEqualTo(id));
                foreach (var doc in docs)
                {
                    doc.ID = Guid.Empty;
                    doc.EntityLink.ID = equipment.ID;
                    doc.CommitChanges();
                }

                new Client<EquipmentDocument>().Save(docs, "Equipment Item Duplicated");
            }

            Progress.Close();
            MessageBox.Show(string.Format("{0} created!", equipment.Code));
            return true;
        }

        protected override void Reload(Filters<Equipment> criteria, Columns<Equipment> columns, ref SortOrder<Equipment> sort,
            Action<CoreTable, Exception> action)
        {
            sort = new SortOrder<Equipment>(x => x.Code);
            base.Reload(criteria, columns, ref sort, action);
        }

        private bool ShowSpecificationSheet(CoreRow arg)
        {
            var id = Entity.EntityLinkID<Equipment, ImageDocumentLink>(x => x.SpecificationSheet, arg);
            //String file = arg.Get<Equipment, String>(x => x.Specification.FileName);
            if (id != null)
                return false;

            var doc = new Client<Document>().Load(new Filter<Document>(x => x.ID).IsEqualTo(id)).FirstOrDefault();
            if (doc == null)
            {
                MessageBox.Show("Unable to Load Document");
                return false;
            }

            var ext = Path.GetExtension(doc.FileName);
            var tmpfile = Path.ChangeExtension(Path.GetTempFileName(), ext);

            File.WriteAllBytes(tmpfile, doc.Data);

			ProcessStartInfo gsProcessInfo = new ProcessStartInfo();
			gsProcessInfo.Verb = "open";
			gsProcessInfo.WindowStyle = ProcessWindowStyle.Normal;
			gsProcessInfo.FileName = tmpfile;
            gsProcessInfo.UseShellExecute = true;
            Process.Start(gsProcessInfo);

            return false;
        }


        private BitmapImage? SpecificationImage(CoreRow arg)
        {
            if (arg == null)
                return specification;

            var id = Entity.EntityLinkID<Equipment, ImageDocumentLink>(x => x.SpecificationSheet, arg);
            return id == null ? null : specification;
        }
    }
}