using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Windows;
using Comal.Classes;
using InABox.Configuration;
using InABox.Wpf;
using Microsoft.Win32;
using NPOI.SS.UserModel;
using NPOI.SS.Util;
using NPOI.XSSF.UserModel;

namespace PRSDesktop
{
    /// <summary>
    ///     Interaction logic for SetoutTemplate.xaml
    /// </summary>
    public partial class SetoutTemplate : ThemableWindow
    {
        private readonly GlobalConfiguration<FactorySetup> config = new();

        private FactoryTemplate currentTemplate;
        private readonly FactorySetup settings;

        public SetoutTemplate()
        {
            InitializeComponent();
            settings = config.Load();

            Templates.Load(settings);

            Stages.SetStages(new List<StageTemplate>());
            //Attributes.Attributes = new List<FactoryTemplateAttribute>();
            //Attributes.Refresh(true, false);
            currentTemplate = null;
        }

        private void OKButton_Click(object sender, RoutedEventArgs e)
        {
            if (currentTemplate != null)
            {
                currentTemplate.Stages.Clear();
                currentTemplate.Stages.AddRange(Stages.GetStages<StageTemplate>());

                currentTemplate.Items.Clear();
                //currentTemplate.Attributes.AddRange(Items.GetItems<FactoryTemplateItem>());
            }

            settings.Templates = Templates.Templates;
            config.Save(settings);
            Close();
        }

        private void CancelButton_Click(object sender, RoutedEventArgs e)
        {
            Close();
        }

        private void Templates_TemplateSelected(object sender, TempateSelectedArgs e)
        {
            if (currentTemplate != null)
            {
                currentTemplate.Stages.Clear();
                currentTemplate.Stages.AddRange(Stages.GetStages<StageTemplate>());

                currentTemplate.Items.Clear();
                //currentTemplate.Items.AddRange(Items.GetItems<FactoryTemplateItem>());
            }

            currentTemplate = e.Template;

            if (e.Template != null) Stages.SetStages(e.Template.Stages);
            //Attributes.Attributes = e.Template.Attributes;
            //Attributes.Refresh(false,true);
        }

        private ICell EnsureCell(ISheet sheet, int row, int col, ICellStyle style)
        {
            var _row = sheet.GetRow(row);
            if (_row == null)
                _row = sheet.CreateRow(row);

            var _cell = _row.GetCell(col);
            if (_cell == null)
                _cell = _row.CreateCell(col);

            _cell.CellStyle = style;

            return _cell;
        }

        private ICellStyle CreateStyle(IWorkbook book, IndexedColors color)
        {
            var style = book.CreateCellStyle();
            style.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;
            style.VerticalAlignment = NPOI.SS.UserModel.VerticalAlignment.Center;
            style.BorderLeft = BorderStyle.Medium;
            style.BorderRight = BorderStyle.Medium;
            style.BorderTop = BorderStyle.Medium;
            style.BorderBottom = BorderStyle.Medium;
            style.FillForegroundColor = color.Index;
            style.FillPattern = FillPattern.SolidForeground;
            return style;
        }

        private void ExportButton_Click(object sender, RoutedEventArgs e)
        {
            if (currentTemplate != null)
            {
                currentTemplate.Stages.Clear();
                currentTemplate.Stages.AddRange(Stages.GetStages<StageTemplate>());

                currentTemplate.Items.Clear();
                //currentTemplate.Items.AddRange(Items.GetItems<FactoryTemplateItem>());
            }

            var dlg = new SaveFileDialog();
            dlg.DefaultExt = "xlsx";
            dlg.Filter = "Excel Files|*.xlsx";
            if (dlg.ShowDialog() != true)
                return;

            using (var stream = new FileStream(dlg.FileName, FileMode.Create, FileAccess.Write))
            {
                IWorkbook book = new XSSFWorkbook();
                var sheet = book.CreateSheet("Sheet1");

                var style = CreateStyle(book, IndexedColors.Grey50Percent);

                EnsureCell(sheet, 0, 0, style).SetCellValue("Code");
                EnsureCell(sheet, 0, 1, style).SetCellValue("Description");
                EnsureCell(sheet, 1, 0, style).SetCellValue("");
                EnsureCell(sheet, 1, 1, style).SetCellValue("");
                sheet.AddMergedRegion(new CellRangeAddress(0, 1, 0, 0));
                sheet.AddMergedRegion(new CellRangeAddress(0, 1, 1, 1));

                var sections = new List<Guid>();
                var config = new GlobalConfiguration<FactorySetup>();
                var settings = config.Load();
                var iGrp = 0;
                var sGrp = "";
                for (var i = 0; i < settings.Sections.Count; i++)
                {
                    var section = settings.Sections[i];
                    sections.Add(section.ID);
                    if (!section.Group.Equals(sGrp))
                    {
                        if (!string.IsNullOrEmpty(sGrp))
                            sheet.AddMergedRegion(new CellRangeAddress(0, 0, iGrp, i + 1));
                        iGrp = i + 2;
                        sGrp = section.Group;
                    }

                    EnsureCell(sheet, 0, i + 2, style).SetCellValue(section.Group);
                    EnsureCell(sheet, 1, i + 2, style).SetCellValue(section.Name);
                }

                if (iGrp < settings.Sections.Count + 2)
                    sheet.AddMergedRegion(new CellRangeAddress(0, 0, iGrp, settings.Sections.Count + 1));
                style = CreateStyle(book, IndexedColors.White);

                for (var j = 0; j < settings.Templates.Count; j++)
                {
                    var template = settings.Templates[j];
                    EnsureCell(sheet, j + 2, 0, style).SetCellValue(template.Code);
                    EnsureCell(sheet, j + 2, 1, style).SetCellValue(template.Name);

                    for (var k = 0; k < sections.Count; k++)
                        EnsureCell(sheet, j + 2, k + 2, style).SetCellValue(" ");

                    foreach (var stage in template.Stages)
                    {
                        var col = sections.IndexOf(stage.SectionID);
                        EnsureCell(sheet, j + 2, col + 2, style).SetCellValue(stage.Minutes);
                    }
                }

                for (var i = 0; i < settings.Sections.Count + 2; i++)
                    sheet.AutoSizeColumn(i);

                book.Write(stream);
            }

            Process.Start(dlg.FileName);
        }
    }
}