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

namespace AndroidLIB
{
    public class PreParser
    {
        public static InterthreadMessageQueue<AndroidMSG> AndroMessageQueue;
        public PreParser()
        {
            AndroMessageQueue = new InterthreadMessageQueue<AndroidMSG>();
        }

        public void FeedData(byte[] data, int recv, string sourceIP)
        {
            String stringData = System.Text.Encoding.ASCII.GetString(data, 0, recv);
            String usefulData = stringData.Trim();

            int bProcessed =0;
            int messLen = 0;
            string[] tempArr = usefulData.Split('#');
            try
            {
                messLen = Convert.ToInt32(tempArr[1]);
            }
            catch (Exception ex)
            {
                SMd.Debug("Incorect message len!!!!");
                SMd.Debug(ex.ToString());
                return;
            }
            if (messLen == 0) return;

            if (recv != messLen)
            {
                Console.WriteLine("\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\");
                Console.WriteLine("\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\");
                Console.WriteLine("\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\");
                Console.WriteLine("\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\");
                Console.WriteLine("message length({0}) != actual length({1})", messLen, recv);
                Console.WriteLine("\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\");
                Console.WriteLine("\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\");
                Console.WriteLine("\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\");
                Console.WriteLine("\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\");
                Console.WriteLine("\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\");
                if (messLen < recv)//we have multiple messages in one pack
                {
                    byte[] tempDAta = data;
                    int tempRecv = recv;
                    while ((bProcessed < recv) && (tempDAta.Length > 0))
                    {
                        String stringLen = System.Text.Encoding.ASCII.GetString(tempDAta, 1, 3);
                        try
                        {
                            int tempLen = Convert.ToInt32(stringLen.Replace("#", ""));
                            byte[] buff = new byte[tempLen];
                            Array.Copy(tempDAta, 0, buff, 0, tempLen);
                            Add2Queue(buff, tempLen,sourceIP);

                            tempRecv = tempRecv - tempLen;
                            if (tempRecv > 0)
                            {
                                byte[] buffNew = new byte[tempRecv];
                                Array.Copy(tempDAta, tempLen, buffNew, 0, tempRecv);
                                tempDAta = buffNew;
                                
                            }
                            bProcessed += messLen;
                        }
                        catch (Exception ex)
                        {
                            SMd.Debug("Incorect message len!!!!");
                            SMd.Debug(ex.ToString());
                            return;
                        }
                    }

                    //process left over
                }
                else//incomplet message drop it
                {
                    return;
                }
            }
            else
            {
                Add2Queue(data, recv,sourceIP);
            }
        }

        private void Add2Queue(byte[] data, int recv, string sourceIP)
        {
            AndroidMSG amsg = new AndroidMSG(data, recv,sourceIP);
            if (amsg.OK)
            {
                //add message to queue
                AndroMessageQueue.PostItem(amsg);
            }
            else
            {
                SMd.Debug("ERROR in PreParser.cs error:" + amsg.error);
            }
        }
    }
}