using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Java.Net;
using Java.IO;
using Java.Util.Regex;
using Android.Database;
using com.hdl.on;

namespace Shared.Other
{
    class ServerHandler : Java.Lang.Thread
    {
        private BufferedReader in1;
        private PrintWriter out1;
        private string documentRoot;
        private Context context;
        private Socket toClient;


        public ServerHandler(string d, Context c, Socket s)
        {

            documentRoot = d;
            context = c;
            toClient = s;

        }


        public override void Run()
        {
            string dokument = "";

            try
            {
                in1 = new BufferedReader(new InputStreamReader(toClient.InputStream));

                // Receive data
                while (true)
                {
                    var s = in1.ReadLine().Trim();

                    if (s == (""))
                    {
                        break;
                    }

                    if (s.Substring(0, 3) == ("GET"))
                    {
                        int leerstelle = s.IndexOf(" HTTP/");
                        dokument = s.Substring(5, leerstelle-5);
                        //dokument = dokument.Replace("[/]+", "/");
                    }
                }
            }
            catch (Exception e)
            {
                Server.remove(toClient);
                try
                {
                    toClient.Close();
                }
                catch (Exception ex) { }
            }

            Java.Util.Regex.Pattern taskerPattern = Java.Util.Regex.Pattern.Compile("tasker/(.+)");
            Matcher taskerMatcher = taskerPattern.Matcher(dokument);

            if (taskerMatcher.Matches())
            {
                try
                {
                    dokument = Java.Net.URLDecoder.Decode(taskerMatcher.Group(1), "UTF-8");
                    sendTasker(dokument);
                }
                catch (UnsupportedEncodingException e)
                {
                    // TODO Auto-generated catch block
                    e.PrintStackTrace();
                    showHtml("403.html");
                }
            }
            else if (dokument == ("tasker/"))
            {
                listTaskerTasks();
            }
            else
            {
                showHtml(dokument);
            }
        }

        private void sendTasker(string taskName)
        {
            ////net.dinglisch.android.tasker.TaskerIntent
            //if (TaskerIntent.testStatus(context)==(TaskerIntent.Status.OK))
            //{
            //    TaskerIntent i = new TaskerIntent(taskName);
            //    context.sendBroadcast(i);

            //    send("Sent intent \"" + taskName + "\" to tasker.");
            //}
            //else
            //{
            //    send("Could not sent intent \"" + taskName + "\" to tasker (" +
            //            TaskerIntent.testStatus(context) + ").");
            //}
        }

        private void listTaskerTasks()
        {
            ICursor c = context.ContentResolver.Query(Android.Net.Uri.Parse("content://net.dinglisch.android.tasker/tasks"), null, null, null, null);

            string text = "Found tasks:<ul>";
            if (c != null)
            {
                Android.Util.Log.Debug("Webserver", "Cursor is not null");
                int nameCol = c.GetColumnIndex("name");
                int projNameCol = c.GetColumnIndex("project_name");

                while (c.MoveToNext())
                {
                    text = text + "<li><a href=\"/tasker/" + c.GetString(nameCol) + "\">" + c.GetString(projNameCol) + ": " + c.GetString(nameCol) + "</a></li>";
                }
                c.Close();
            }
            else
            {
                Android.Util.Log.Debug("Webserver", "Cursor is null");
            }
            text = text + "</ul>";
            send(text);
        }

        private void send(string text)
        {
            string header = getHeaderBase();
            header = header.Replace("%code%", "200 ok");
            header = header.Replace("%length%", "" + text.Length);
            try
            {
                out1 = new PrintWriter(toClient.OutputStream, true);
                out1.Print(header);
                out1.Print(text);
                out1.Flush();
                Server.remove(toClient);
                toClient.Close();
            }
            catch (Exception e)
            {

            }
        }

        private void showHtml(string dokument)
        {
            for (int i = 0; i < Shared.MusicInfo.MusicInfoList.Count; i++)
            {
                var m = Shared.MusicInfo.MusicInfoList[i];
                if ((m.ID + "")==(dokument))
                {
                    dokument = m.Data;
                    break;
                }
            }

            //Standard-Doc
            if (dokument == (""))
            {
                dokument = "index.html";
            }

            // Don't allow directory traversal
            if (dokument.IndexOf("..") != -1)
            {
                dokument = "403.html";
            }

            // Search for files in docroot
            //dokument = documentRoot + dokument;
            Android.Util.Log.Debug("Webserver", "Got " + dokument);
            dokument = dokument.Replace("/+", "/");

            if (dokument.Substring(dokument.Length - 1) == "/")
            {
                dokument = documentRoot + "404.html";
            }

            string header = getHeaderBase();
            header = header.Replace("%code%", "403 Forbidden");

            try
            {
                File f = new File(dokument);
                if (!f.Exists())
                {
                    header = getHeaderBase();
                    header = header.Replace("%code%", "404 File not found");
                    dokument = "404.html";
                }
            }
            catch (Exception e) { }

            if (!(dokument == (documentRoot + "403.html")))
            {
                header = getHeaderBase().Replace("%code%", "200 OK");
            }

            Android.Util.Log.Debug("Webserver", "Serving " + dokument);

            try
            {
                File f = new File(dokument);
                if (f.Exists())
                {
                    BufferedInputStream in1 = new BufferedInputStream(new System.IO.FileStream(dokument,System.IO.FileMode.Open,System.IO.FileAccess.Read));
                    BufferedOutputStream out1 = new BufferedOutputStream(toClient.OutputStream);
                    ByteArrayOutputStream tempOut = new ByteArrayOutputStream();

                    byte[] buf = new byte[4096];
                    int count = 0;
                    while ((count = in1.Read(buf)) != -1) {
                        tempOut.Write(buf, 0, count);
                    }

                    tempOut.Flush();
                    header = header.Replace("%length%", "" + tempOut.Size());


                    out1.Write(System.Text.Encoding.UTF8.GetBytes(header));
                    out1.Write(tempOut.ToByteArray());
                    out1.Flush();
                }
                else
                {
                    // Send HTML-File (Ascii, not as a stream)
                    header = getHeaderBase();
                    header = header.Replace("%code%", "404 File not found");
                    header = header.Replace("%length%", "" + "404 - File not Found".Length);
                    out1 = new PrintWriter(toClient.OutputStream, true);
                    out1.Print(header);
                    out1.Print("404 - File not Found");
                    out1.Flush();
                }

                Server.remove(toClient);
                toClient.Close();
            }
            catch (Exception e)
            {

            }
        }

        private string getHeaderBase()
        {
            return "HTTP/1.1 %code%\n" +
              "Server: AndroidWebserver/1.0\n" +
              "Content-Length: %length%\n" +
              "Connection: close\n" +
              "Content-Type: text/html; charset=iso-8859-1\n\n";
        }
    }
}