using MigraDoc.DocumentObjectModel;
using MigraDoc.DocumentObjectModel.Shapes.Charts;
using MigraDoc.DocumentObjectModel.Tables;
using MigraDoc.Rendering;
using PdfSharp.Drawing;
using PdfSharp.Pdf;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using Tango.Core.Helpers;
using Tango.Core.IO;
using Tango.TFS;

namespace Tango.BugReporter
{
    class Program
    {
        private static List<Color> _colors = new List<Color>()
        {
             Colors.Crimson,
             Colors.Coral,
             Colors.Khaki,
             Colors.Wheat,
             Colors.PaleGreen,
             Colors.PaleTurquoise,
             Colors.CadetBlue,
             Colors.Lavender,
             Colors.SlateBlue,
             Colors.LightSteelBlue,
             Colors.PowderBlue,
             Colors.Silver,
             Colors.SlateGray,
        };

        static void Main(string[] args)
        {
            String startPath = AssemblyHelper.GetCurrentAssemblyFolder();

            ITeamFoundationServiceClient tfs = new TeamFoundationServiceClient("https://twinetfs.visualstudio.com/DefaultCollection", String.Empty, "szzfokrceo4rhd4eqi5qpmxn3pa5iwl3q7tlqd36l2m7smz2ynoa");
            var project = tfs.GetProject("Tango").Result;

            var allItems = tfs.GetAllWorkItems(project).Result.OrderByDescending(x => x.Type).OrderBy(x => x.Severity).ToList();
            var activeItems = allItems.Where(x => x.State == State.Active || x.State == State.New).ToList();
            var resolvedItems = allItems.Where(x => x.State == State.Resolved).ToList();

            Document document = new Document();
            document.Info.Title = "Tango Bug Report";
            document.Info.Author = "Twine Solutions LTD";

            document.DefaultPageSetup.TopMargin = 5;
            document.DefaultPageSetup.RightMargin = 5;
            document.DefaultPageSetup.LeftMargin = 5;

            Style style = document.Styles["Normal"];
            style.Font.Size = 7;

            var section = document.AddSection();
            section.PageSetup.PageFormat = PageFormat.A4;



            var headParagraph = section.AddParagraph();
            headParagraph.Format.Alignment = ParagraphAlignment.Left;
            headParagraph.Format.Font.Size = 16;
            headParagraph.Format.Font.Bold = true;
            headParagraph.Format.SpaceBefore = "8mm";
            headParagraph.Format.SpaceAfter = "5mm";
            headParagraph.Format.RightIndent = "5mm";
            headParagraph.Format.Font.Color = Colors.DimGray;

            var img = headParagraph.AddImage(Path.Combine(startPath, "twine-logo.jpg"));
            headParagraph.AddSpace(5);
            var t = headParagraph.AddText("              Twine Solutions VSTS Report");

            var pp = section.AddParagraph(String.Format("This report was generated on {0}. Below you can find a daily summery of the Tango project, work items state and urgency.", DateTime.Now.ToShortDateString()));
            pp.Format.LeftIndent = "2cm";

            AddTable(section, "All Active Items", activeItems);

            section.AddPageBreak();

            AddTable(section, "Created Today", activeItems.Where(x => x.CreatedDate.Date == DateTime.Now.Date));

            section.AddPageBreak();

            AddTable(section, "Resolved Today", resolvedItems.Where(x => x.ResolvedDate.Date == DateTime.Now.Date));

            section.AddPageBreak();

            AddChart(section, ChartType.Column2D, "Items Per Member", activeItems.GroupBy(x => x.AssignedTo), nameof(TeamMember.DisplayName));

            section.AddPageBreak();

            AddChart(section, ChartType.Bar2D, "Items Per Area", activeItems.GroupBy(x => x.Area.Name), null);

            section.AddPageBreak();

            foreach (var g in activeItems.GroupBy(x => x.Area.Name))
            {
                AddTable(section, g.Key + " Items", g);

                section.AddPageBreak();
            }

            var group = activeItems.GroupBy(x => x.AssignedTo);

            var file = TemporaryManager.Default.CreateFile();

            PdfDocumentRenderer pdfRenderer = new PdfDocumentRenderer(false, PdfFontEmbedding.None);
            pdfRenderer.Document = document;
            pdfRenderer.RenderDocument();
            pdfRenderer.PdfDocument.Save(file.Path);

            ITeamFoundationEmailClient emailClient = new TeamFoundationEmailClient(new System.Net.NetworkCredential("roy@twine-s.com", "Maya2018"));

            Email mail = new Email();
            mail.Attachments.Add(new Attachment() { FilePath = file.Path, Name = "VSTS-REPORT.pdf" });
            mail.From = project.Members.SingleOrDefault(x => x.DisplayName.Contains("Roy"));
            mail.To.Add(mail.From);
            mail.Subject = "VSTS Daily Report";
            mail.Body = "Attached is a daily report containing Tango project work items.";

            emailClient.Send(mail).Wait();

            file.Delete();
        }

        private static Chart AddChart<T>(Section section, ChartType chartType, String header, IEnumerable<IGrouping<T, WorkItem>> workItemGroups, String propName)
        {
            var headParagraph = section.AddParagraph(header);
            headParagraph.Format.Alignment = ParagraphAlignment.Left;
            headParagraph.Format.Font.Size = 16;
            headParagraph.Format.Font.Bold = true;
            headParagraph.Format.SpaceBefore = "8mm";
            headParagraph.Format.SpaceAfter = "5mm";

            Chart chart = section.AddChart(chartType);
            chart.Width = section.Document.DefaultPageSetup.PageWidth - 5;
            chart.Height = "10cm";

            workItemGroups = workItemGroups.OrderByDescending(x => x.Count());

            Series series = chart.SeriesCollection.AddSeries();
            series.Add(workItemGroups.Select(x => (double)x.Count()).ToArray());

            XSeries xseries = chart.XValues.AddXSeries();

            if (propName != null)
            {
                xseries.Add(workItemGroups.Select(x => x.Key.GetType().GetProperty(propName, BindingFlags.Public | BindingFlags.Instance).GetValue(x.Key).ToString()).ToArray());
            }
            else
            {
                xseries.Add(workItemGroups.Select(x => x.Key.ToString()).ToArray());
            }

            var elements = series.Elements.Cast<Point>().ToArray();

            for (int i = 0; i < elements.Length; i++)
            {
                elements[i].FillFormat.Color = _colors[i];
            }

            chart.XAxis.MajorTickMark = TickMarkType.Outside;
            chart.XAxis.Title.Caption = propName;
            chart.YAxis.MajorTickMark = TickMarkType.Outside;
            chart.YAxis.HasMajorGridlines = true;
            chart.PlotArea.LineFormat.Color = Colors.White;
            chart.PlotArea.LineFormat.Width = 1;
            chart.PlotArea.LineFormat.Visible = true;
            return chart;
        }

        private static Table AddTable(Section section, String header, IEnumerable<WorkItem> workItems)
        {
            String startPath = AssemblyHelper.GetCurrentAssemblyFolder();

            var headParagraph = section.AddParagraph(header);
            headParagraph.Format.Alignment = ParagraphAlignment.Left;
            headParagraph.Format.Font.Size = 16;
            headParagraph.Format.Font.Bold = true;
            headParagraph.Format.SpaceBefore = "8mm";
            headParagraph.Format.SpaceAfter = "5mm";


            var table = section.AddTable();

            table.Borders.Color = Colors.Black;
            table.Borders.Width = 0.25;
            table.Borders.Left.Width = 0.5;
            table.Borders.Right.Width = 0.5;
            table.Rows.LeftIndent = 0;

            table.BottomPadding = "2mm";
            table.TopPadding = "2mm";
            table.LeftPadding = "2mm";
            table.RightPadding = "2mm";


            // Before you can add a row, you must define the columns
            table.AddColumn("1cm");
            table.AddColumn();
            table.AddColumn("4cm");
            table.AddColumn();
            table.AddColumn();
            table.AddColumn();
            table.AddColumn("1.5cm");
            table.AddColumn("1.5cm");
            table.AddColumn("1.5cm");

            // Create the header of the table
            Row row = table.AddRow();
            row.HeadingFormat = true;
            row.Shading.Color = Colors.Gainsboro;
            row.Cells[0].AddParagraph("Work Item");
            row.Cells[1].AddParagraph("Created Date");
            row.Cells[2].AddParagraph("Title");
            row.Cells[3].AddParagraph("Area");
            row.Cells[4].AddParagraph("Created By");
            row.Cells[5].AddParagraph("Assigned To");
            row.Cells[6].AddParagraph("Severity");
            row.Cells[7].AddParagraph("Priority");
            row.Cells[8].AddParagraph("State");

            foreach (var item in workItems)
            {
                Row r = table.AddRow();
                var image = r.Cells[0].AddImage(Path.Combine(startPath, item.Type == WorkItemType.Bug ? "bug.png" : "task.png"));
                image.Width = 15;
                image.Height = 15;
                r.Cells[1].AddParagraph(item.CreatedDate.ToShortDateString());

                var linkParagraph = r.Cells[2].AddParagraph();
                var link = linkParagraph.AddHyperlink(String.Format("https://twinetfs.visualstudio.com/DefaultCollection/Tango/_queries?id={0}&_a=edit", item.ID), HyperlinkType.Web);
                link.AddFormattedText(item.Title);

                r.Cells[3].AddParagraph(item.Area.Name);
                r.Cells[4].AddParagraph(item.CreatedBy.DisplayName);
                r.Cells[5].AddParagraph(item.AssignedTo.DisplayName);
                var p = r.Cells[6].AddParagraph(item.Severity.ToString());

                if (item.Severity == Severity.Critical || item.Severity == Severity.High)
                {
                    p.Format.Font.Color = Colors.Red;
                }

                r.Cells[7].AddParagraph(item.Priority.ToDescription());
                r.Cells[8].AddParagraph(item.State.ToString());
            }

            return table;
        }
    }
}