using System;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Web.UI;
using HtmlAttr = System.Web.UI.HtmlTextWriterAttribute;
using HtmlTag = System.Web.UI.HtmlTextWriterTag;
using Server.Misc;

namespace Server.Engines.Reports
{
    public class HtmlRenderer
    {
        private static readonly string FtpHost = null;
        private static readonly string FtpUsername = null;
        private static readonly string FtpPassword = null;
        private static readonly string FtpStatsDirectory = null;
        private static readonly string FtpStaffDirectory = null;
        private readonly string m_Type;
        private readonly string m_Title;
        private readonly string m_OutputDirectory;
        private readonly DateTime m_TimeStamp;
        private readonly ObjectCollection m_Objects;
        public HtmlRenderer(string outputDirectory, Snapshot ss, SnapshotHistory history)
            : this(outputDirectory)
        {
            this.m_TimeStamp = ss.TimeStamp;

            this.m_Objects = new ObjectCollection();

            for (int i = 0; i < ss.Children.Count; ++i)
                this.m_Objects.Add(ss.Children[i]);

            this.m_Objects.Add(BarGraph.OverTime(history, "General Stats", "Clients", 1, 100, 6));
            this.m_Objects.Add(BarGraph.OverTime(history, "General Stats", "Items", 24, 9, 1));
            this.m_Objects.Add(BarGraph.OverTime(history, "General Stats", "Players", 24, 9, 1));
            this.m_Objects.Add(BarGraph.OverTime(history, "General Stats", "NPCs", 24, 9, 1));
            this.m_Objects.Add(BarGraph.DailyAverage(history, "General Stats", "Clients"));
            this.m_Objects.Add(BarGraph.Growth(history, "General Stats", "Clients"));
        }

        public HtmlRenderer(string outputDirectory, StaffHistory history)
            : this(outputDirectory)
        {
            this.m_TimeStamp = DateTime.UtcNow;

            this.m_Objects = new ObjectCollection();

            history.Render(this.m_Objects);
        }

        private HtmlRenderer(string outputDirectory)
        {
            this.m_Type = outputDirectory;
            this.m_Title = (this.m_Type == "staff" ? "Staff" : "Stats");
            this.m_OutputDirectory = Path.Combine(Core.BaseDirectory, Config.Get("Reports.Path", "reports"));

            if (!Directory.Exists(this.m_OutputDirectory))
                Directory.CreateDirectory(this.m_OutputDirectory);

            this.m_OutputDirectory = Path.Combine(this.m_OutputDirectory, outputDirectory);

            if (!Directory.Exists(this.m_OutputDirectory))
                Directory.CreateDirectory(this.m_OutputDirectory);
        }

        public static string SafeFileName(string name)
        {
            return name.ToLower().Replace(' ', '_');
        }

        public void Render()
        {
            Console.WriteLine("Reports: {0}: Render started", this.m_Title);

            this.RenderFull();

            for (int i = 0; i < this.m_Objects.Count; ++i)
                this.RenderSingle(this.m_Objects[i]);

            Console.WriteLine("Reports: {0}: Render complete", this.m_Title);
        }

        public void Upload()
        {
            if (FtpHost == null)
                return;

            Console.WriteLine("Reports: {0}: Upload started", this.m_Title);

            string filePath = Path.Combine(this.m_OutputDirectory, "upload.ftp");

            using (StreamWriter op = new StreamWriter(filePath))
            {
                op.WriteLine("open \"{0}\"", FtpHost);
                op.WriteLine(FtpUsername);
                op.WriteLine(FtpPassword);
                op.WriteLine("cd \"{0}\"", (this.m_Type == "staff" ? FtpStaffDirectory : FtpStatsDirectory));
                op.WriteLine("mput \"{0}\"", Path.Combine(this.m_OutputDirectory, "*.html"));
                op.WriteLine("mput \"{0}\"", Path.Combine(this.m_OutputDirectory, "*.css"));
                op.WriteLine("binary");
                op.WriteLine("mput \"{0}\"", Path.Combine(this.m_OutputDirectory, "*.png"));
                op.WriteLine("disconnect");
                op.Write("quit");
            }

            ProcessStartInfo psi = new ProcessStartInfo();

            psi.FileName = "ftp";
            psi.Arguments = String.Format("-i -s:\"{0}\"", filePath);

            psi.CreateNoWindow = true;
            psi.WindowStyle = ProcessWindowStyle.Hidden;
            //psi.UseShellExecute = true;

            try
            {
                Process p = Process.Start(psi);

                p.WaitForExit();
            }
            catch
            {
            }

            Console.WriteLine("Reports: {0}: Upload complete", this.m_Title);

            try
            {
                File.Delete(filePath);
            }
            catch
            {
            }
        }

        public void RenderFull()
        {
            string filePath = Path.Combine(this.m_OutputDirectory, "reports.html");

            using (StreamWriter op = new StreamWriter(filePath))
            {
                using (HtmlTextWriter html = new HtmlTextWriter(op, "\t"))
                    this.RenderFull(html);
            }

            string cssPath = Path.Combine(this.m_OutputDirectory, "styles.css");

            if (File.Exists(cssPath))
                return;

            using (StreamWriter css = new StreamWriter(cssPath))
            {
                css.WriteLine("body { background-color: #FFFFFF; font-family: verdana, arial; font-size: 11px; }");
                css.WriteLine("a { color: #28435E; }");
                css.WriteLine("a:hover { color: #4878A9; }");
                css.WriteLine("td.header { background-color: #9696AA; font-weight: bold; font-size: 12px; }");
                css.WriteLine("td.lentry { background-color: #D7D7EB; width: 10%; }");
                css.WriteLine("td.rentry { background-color: #FFFFFF; width: 90%; }");
                css.WriteLine("td.entry { background-color: #FFFFFF; }");
                css.WriteLine("td { font-size: 11px; }");
                css.Write(".tbl-border { background-color: #46465A; }");
            }
        }

        public void RenderFull(HtmlTextWriter html)
        {
            html.RenderBeginTag(HtmlTag.Html);

            html.RenderBeginTag(HtmlTag.Head);

            html.RenderBeginTag(HtmlTag.Title);
            html.Write("{0} Statistics", ServerList.ServerName);
            html.RenderEndTag();

            html.AddAttribute("rel", "stylesheet");
            html.AddAttribute(HtmlAttr.Type, "text/css");
            html.AddAttribute(HtmlAttr.Href, "styles.css");
            html.RenderBeginTag(HtmlTag.Link);
            html.RenderEndTag();

            html.RenderEndTag();

            html.RenderBeginTag(HtmlTag.Body);

            for (int i = 0; i < this.m_Objects.Count; ++i)
            {
                this.RenderDirect(this.m_Objects[i], html);
                html.Write("<br><br>");
            }

            html.RenderBeginTag(HtmlTag.Center);
            TimeZoneInfo tz = TimeZoneInfo.Local;
            bool isDaylight = tz.IsDaylightSavingTime(this.m_TimeStamp);
            TimeSpan utcOffset = tz.GetUtcOffset(this.m_TimeStamp);

            html.Write("Snapshot taken at {0:d} {0:t}. All times are {1}.", this.m_TimeStamp, tz.StandardName);
            html.RenderEndTag();

            html.RenderEndTag();

            html.RenderEndTag();
        }

        public void RenderSingle(PersistableObject obj)
        {
            string filePath = Path.Combine(this.m_OutputDirectory, SafeFileName(this.FindNameFrom(obj)) + ".html");

            using (StreamWriter op = new StreamWriter(filePath))
            {
                using (HtmlTextWriter html = new HtmlTextWriter(op, "\t"))
                    this.RenderSingle(obj, html);
            }
        }

        public void RenderSingle(PersistableObject obj, HtmlTextWriter html)
        {
            html.RenderBeginTag(HtmlTag.Html);

            html.RenderBeginTag(HtmlTag.Head);

            html.RenderBeginTag(HtmlTag.Title);
            html.Write("{0} Statistics - {1}", ServerList.ServerName, this.FindNameFrom(obj));
            html.RenderEndTag();

            html.AddAttribute("rel", "stylesheet");
            html.AddAttribute(HtmlAttr.Type, "text/css");
            html.AddAttribute(HtmlAttr.Href, "styles.css");
            html.RenderBeginTag(HtmlTag.Link);
            html.RenderEndTag();

            html.RenderEndTag();

            html.RenderBeginTag(HtmlTag.Body);

            html.RenderBeginTag(HtmlTag.Center);

            this.RenderDirect(obj, html);

            html.Write("<br>");

            TimeZoneInfo tz = TimeZoneInfo.Local;
            bool isDaylight = tz.IsDaylightSavingTime(this.m_TimeStamp);
            TimeSpan utcOffset = tz.GetUtcOffset(this.m_TimeStamp);

            html.Write("Snapshot taken at {0:d} {0:t}. All times are {1}.", this.m_TimeStamp, tz.StandardName);
            html.RenderEndTag();

            html.RenderEndTag();

            html.RenderEndTag();
        }

        public void RenderDirect(PersistableObject obj, HtmlTextWriter html)
        {
            if (obj is Report)
                this.RenderReport(obj as Report, html);
            else if (obj is BarGraph)
                this.RenderBarGraph(obj as BarGraph, html);
            else if (obj is PieChart)
                this.RenderPieChart(obj as PieChart, html);
        }

        private string FindNameFrom(PersistableObject obj)
        {
            if (obj is Report)
                return (obj as Report).Name;
            else if (obj is Chart)
                return (obj as Chart).Name;

            return "Invalid";
        }

        private void RenderPieChart(PieChart chart, HtmlTextWriter html)
        {
            PieChartRenderer pieChart = new PieChartRenderer(Color.White);

            pieChart.ShowPercents = chart.ShowPercents;

            string[] labels = new string[chart.Items.Count];
            string[] values = new string[chart.Items.Count];

            for (int i = 0; i < chart.Items.Count; ++i)
            {
                ChartItem item = chart.Items[i];

                labels[i] = item.Name;
                values[i] = item.Value.ToString();
            }

            pieChart.CollectDataPoints(labels, values);

            Bitmap bmp = pieChart.Draw();

            string fileName = chart.FileName + ".png";
            bmp.Save(Path.Combine(this.m_OutputDirectory, fileName), ImageFormat.Png);

            html.Write("<!-- ");

            html.AddAttribute(HtmlAttr.Href, "#");
            html.AddAttribute(HtmlAttr.Onclick, String.Format("javascript:window.open('{0}.html','ChildWindow','width={1},height={2},resizable=no,status=no,toolbar=no')", SafeFileName(this.FindNameFrom(chart)), bmp.Width + 30, bmp.Height + 80));
            html.RenderBeginTag(HtmlTag.A);
            html.Write(chart.Name);
            html.RenderEndTag();

            html.Write(" -->");

            html.AddAttribute(HtmlAttr.Cellpadding, "0");
            html.AddAttribute(HtmlAttr.Cellspacing, "0");
            html.AddAttribute(HtmlAttr.Border, "0");
            html.RenderBeginTag(HtmlTag.Table);

            html.RenderBeginTag(HtmlTag.Tr);
            html.AddAttribute(HtmlAttr.Class, "tbl-border");
            html.RenderBeginTag(HtmlTag.Td);

            html.AddAttribute(HtmlAttr.Width, "100%");
            html.AddAttribute(HtmlAttr.Cellpadding, "4");
            html.AddAttribute(HtmlAttr.Cellspacing, "1");
            html.RenderBeginTag(HtmlTag.Table);

            html.RenderBeginTag(HtmlTag.Tr);

            html.AddAttribute(HtmlAttr.Colspan, "10");
            html.AddAttribute(HtmlAttr.Width, "100%");
            html.AddAttribute(HtmlAttr.Align, "center");
            html.AddAttribute(HtmlAttr.Class, "header");
            html.RenderBeginTag(HtmlTag.Td);
            html.Write(chart.Name);
            html.RenderEndTag();
            html.RenderEndTag();

            html.RenderBeginTag(HtmlTag.Tr);

            html.AddAttribute(HtmlAttr.Colspan, "10");
            html.AddAttribute(HtmlAttr.Width, "100%");
            html.AddAttribute(HtmlAttr.Align, "center");
            html.AddAttribute(HtmlAttr.Class, "entry");
            html.RenderBeginTag(HtmlTag.Td);

            html.AddAttribute(HtmlAttr.Width, bmp.Width.ToString());
            html.AddAttribute(HtmlAttr.Height, bmp.Height.ToString());
            html.AddAttribute(HtmlAttr.Src, fileName);
            html.RenderBeginTag(HtmlTag.Img);
            html.RenderEndTag();

            html.RenderEndTag();
            html.RenderEndTag();

            html.RenderEndTag();
            html.RenderEndTag();
            html.RenderEndTag();
            html.RenderEndTag();

            bmp.Dispose();
        }

        private void RenderBarGraph(BarGraph graph, HtmlTextWriter html)
        {
            BarGraphRenderer barGraph = new BarGraphRenderer(Color.White);

            barGraph.RenderMode = graph.RenderMode;

            barGraph._regions = graph.Regions;
            barGraph.SetTitles(graph.xTitle, null);

            if (graph.yTitle != null)
                barGraph.VerticalLabel = graph.yTitle;

            barGraph.FontColor = Color.Black;
            barGraph.ShowData = (graph.Interval == 1);
            barGraph.VerticalTickCount = graph.Ticks;

            string[] labels = new string[graph.Items.Count];
            string[] values = new string[graph.Items.Count];

            for (int i = 0; i < graph.Items.Count; ++i)
            {
                ChartItem item = graph.Items[i];

                labels[i] = item.Name;
                values[i] = item.Value.ToString();
            }

            barGraph._interval = graph.Interval;
            barGraph.CollectDataPoints(labels, values);

            Bitmap bmp = barGraph.Draw();

            string fileName = graph.FileName + ".png";
            bmp.Save(Path.Combine(this.m_OutputDirectory, fileName), ImageFormat.Png);

            html.Write("<!-- ");

            html.AddAttribute(HtmlAttr.Href, "#");
            html.AddAttribute(HtmlAttr.Onclick, String.Format("javascript:window.open('{0}.html','ChildWindow','width={1},height={2},resizable=no,status=no,toolbar=no')", SafeFileName(this.FindNameFrom(graph)), bmp.Width + 30, bmp.Height + 80));
            html.RenderBeginTag(HtmlTag.A);
            html.Write(graph.Name);
            html.RenderEndTag();

            html.Write(" -->");

            html.AddAttribute(HtmlAttr.Cellpadding, "0");
            html.AddAttribute(HtmlAttr.Cellspacing, "0");
            html.AddAttribute(HtmlAttr.Border, "0");
            html.RenderBeginTag(HtmlTag.Table);

            html.RenderBeginTag(HtmlTag.Tr);
            html.AddAttribute(HtmlAttr.Class, "tbl-border");
            html.RenderBeginTag(HtmlTag.Td);

            html.AddAttribute(HtmlAttr.Width, "100%");
            html.AddAttribute(HtmlAttr.Cellpadding, "4");
            html.AddAttribute(HtmlAttr.Cellspacing, "1");
            html.RenderBeginTag(HtmlTag.Table);

            html.RenderBeginTag(HtmlTag.Tr);

            html.AddAttribute(HtmlAttr.Colspan, "10");
            html.AddAttribute(HtmlAttr.Width, "100%");
            html.AddAttribute(HtmlAttr.Align, "center");
            html.AddAttribute(HtmlAttr.Class, "header");
            html.RenderBeginTag(HtmlTag.Td);
            html.Write(graph.Name);
            html.RenderEndTag();
            html.RenderEndTag();

            html.RenderBeginTag(HtmlTag.Tr);

            html.AddAttribute(HtmlAttr.Colspan, "10");
            html.AddAttribute(HtmlAttr.Width, "100%");
            html.AddAttribute(HtmlAttr.Align, "center");
            html.AddAttribute(HtmlAttr.Class, "entry");
            html.RenderBeginTag(HtmlTag.Td);

            html.AddAttribute(HtmlAttr.Width, bmp.Width.ToString());
            html.AddAttribute(HtmlAttr.Height, bmp.Height.ToString());
            html.AddAttribute(HtmlAttr.Src, fileName);
            html.RenderBeginTag(HtmlTag.Img);
            html.RenderEndTag();

            html.RenderEndTag();
            html.RenderEndTag();

            html.RenderEndTag();
            html.RenderEndTag();
            html.RenderEndTag();
            html.RenderEndTag();

            bmp.Dispose();
        }

        private void RenderReport(Report report, HtmlTextWriter html)
        {
            html.AddAttribute(HtmlAttr.Width, report.Width);
            html.AddAttribute(HtmlAttr.Cellpadding, "0");
            html.AddAttribute(HtmlAttr.Cellspacing, "0");
            html.AddAttribute(HtmlAttr.Border, "0");
            html.RenderBeginTag(HtmlTag.Table);

            html.RenderBeginTag(HtmlTag.Tr);
            html.AddAttribute(HtmlAttr.Class, "tbl-border");
            html.RenderBeginTag(HtmlTag.Td);

            html.AddAttribute(HtmlAttr.Width, "100%");
            html.AddAttribute(HtmlAttr.Cellpadding, "4");
            html.AddAttribute(HtmlAttr.Cellspacing, "1");
            html.RenderBeginTag(HtmlTag.Table);

            html.RenderBeginTag(HtmlTag.Tr);
            html.AddAttribute(HtmlAttr.Colspan, "10");
            html.AddAttribute(HtmlAttr.Width, "100%");
            html.AddAttribute(HtmlAttr.Align, "center");
            html.AddAttribute(HtmlAttr.Class, "header");
            html.RenderBeginTag(HtmlTag.Td);
            html.Write(report.Name);
            html.RenderEndTag();
            html.RenderEndTag();

            bool isNamed = false;

            for (int i = 0; i < report.Columns.Count && !isNamed; ++i)
                isNamed = (report.Columns[i].Name != null);

            if (isNamed)
            {
                html.RenderBeginTag(HtmlTag.Tr);

                for (int i = 0; i < report.Columns.Count; ++i)
                {
                    ReportColumn column = report.Columns[i];

                    html.AddAttribute(HtmlAttr.Class, "header");
                    html.AddAttribute(HtmlAttr.Width, column.Width);
                    html.AddAttribute(HtmlAttr.Align, column.Align);
                    html.RenderBeginTag(HtmlTag.Td);

                    html.Write(column.Name);

                    html.RenderEndTag();
                }

                html.RenderEndTag();
            }

            for (int i = 0; i < report.Items.Count; ++i)
            {
                ReportItem item = report.Items[i];

                html.RenderBeginTag(HtmlTag.Tr);

                for (int j = 0; j < item.Values.Count; ++j)
                {
                    if (!isNamed && j == 0)
                        html.AddAttribute(HtmlAttr.Width, report.Columns[j].Width);

                    html.AddAttribute(HtmlAttr.Align, report.Columns[j].Align);
                    html.AddAttribute(HtmlAttr.Class, "entry");
                    html.RenderBeginTag(HtmlTag.Td);

                    if (item.Values[j].Format == null)
                        html.Write(item.Values[j].Value);
                    else
                        html.Write(int.Parse(item.Values[j].Value).ToString(item.Values[j].Format));

                    html.RenderEndTag();
                }

                html.RenderEndTag();
            }

            html.RenderEndTag();
            html.RenderEndTag();
            html.RenderEndTag();
            html.RenderEndTag();
        }
    }
}