using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using SafeMobileLib;
using System.Net.Sockets;
using System.Threading;
using System.IO;

namespace AppServer
{
    class RecordingsServer
    {
        private List<Recording> recList;
        private DBrecordingsManager db;
        
        private TCPServer tcpServer4Messages;
        private TCPServer tcpServer4Audio;

        public RecordingsServer()
        {
            SM.Debug("Recording server started!!!!!!!!");
            db = new DBrecordingsManager(Program.cfg.DB_IP, Program.cfg.DB_schema, Program.cfg.DB_user, Program.cfg.DB_passwd, Program.cfg.DB_port);

            tcpServer4Messages = new TCPServer();
            tcpServer4Messages.OnMessageRecv += new TCPServer.MessageRecv(tcpServer_OnMessageRecv);
            
            try
            {
                tcpServer4Messages.Start(Program.cfg.RecordingsPort);
            }
            catch (Exception ex)
            {
                Utils.WriteLine("AppServerRecordingsServer Exception: " + ex.ToString(), ConsoleColor.Red);
            }

            tcpServer4Audio = new TCPServer();
            tcpServer4Audio.OnMessageRecv += new TCPServer.MessageRecv(tcpServer4Audio_OnMessageRecv);
            try
            {
                tcpServer4Audio.Start(Program.cfg.RecordingsAudioPort);
            }
            catch(Exception ex)
            {
                Utils.WriteLine("AppServerRecordingsServer Exception: " + ex.ToString(), ConsoleColor.Red);
            }

        }
        
        void tcpServer4Audio_OnMessageRecv(byte[] data, int recv, NetworkStream ns)
        {
            try
            {
                if (data[0] == 1)//file request
                {
                    long id = BitConverter.ToInt64(data, 1);
                    //ASCIIEncoding encoder = new ASCIIEncoding();
                    SM.Debug("A request for recording with file path " + GetFilePath(id) + " was made");
                    PlayFile(id, ns);
                }
            }
            catch (Exception ex)
            {
                SM.Debug("tcpServer4Audio_OnMessageRecv Exeception:"+ex.ToString());
            }
        }

        private void tcpServer_OnMessageRecv(byte[] data, int recv, NetworkStream ns)
        {
            try
            {
                if (data[0] == 0)//list request
                {
                    Int32 imei =data[4]*256*256*256+data[5]*256*256+data[6]*256 + data[7];
                    Int64 time_start = data[8]*256*256*256+data[9]*256*256+data[10]*256+data[11];
                    Int64 time_stop = data[12]*256*256*256+data[13]*256*256+data[14]*256+data[15];
                    Console.WriteLine("Got " + data[1] + " " + data[2] + " " + data[3] + " " + imei + " " + time_start +" " + time_stop);
                    SendList2Client(ns, data[1], data[2], data[3],imei,time_start,time_stop,data[16]);
                    Console.WriteLine();
                }
            }
            catch (Exception ex)
            {
                SM.Debug("tcpServer_OnMessageRecv Exeception:" + ex.ToString());
            }
        }

        private void SendList2Client(NetworkStream ns, byte type, byte gw_id, byte r_gw_id_or_user_id, Int32 imei,Int64 time_start,Int64 time_stop, byte call_type)
        {
            if (type == 1)
                recList = db.GetAllRecordingsForGW(gw_id, r_gw_id_or_user_id,imei,time_start,time_stop,call_type);
            else
                recList = db.GetAllRecordingsForSD(r_gw_id_or_user_id,imei, time_start, time_stop);
            string tempString = "";
            if (recList.Count > 0)
            {
                foreach (Recording obj in recList)
                {
                    DateTime dtstart = (Convert.ToUInt32(obj.startTime)).GetDTLocalFromSeconds();
                    DateTime dtstop = (Convert.ToUInt32(obj.endTime)).GetDTLocalFromSeconds();
                    long recId = obj.id;
                    int subId = (int)obj.subs_imei;
                    tempString += "#";
                    tempString += recId.ToString() + ";";
                    tempString += subId.ToString() + ";";
                    tempString += gw_id.ToString() + ";";
                    tempString += obj.radioGWID.ToString() + ";";
                    tempString += dtstart.ToString("yyyy-MM-dd HH:mm:ss") + ";";
                    tempString += dtstop.ToString("yyyy-MM-dd HH:mm:ss") + ";";
                    tempString += obj.typeSD.ToString()+";";
                    tempString += obj.calltype.ToString()+";";
                    tempString += obj.group_cpsId.ToString();
                }

                string bufferString = "$" + (tempString.Length).ToString() + "$" + tempString;
                bufferString = "$" + (bufferString.Length).ToString() + "$" + tempString;
                Console.WriteLine(bufferString);
                ASCIIEncoding encoder = new ASCIIEncoding();
                byte[] buffer = encoder.GetBytes(bufferString);
                tcpServer4Messages.Send(buffer, buffer.Length, ns);
            }
        }

        private string GetFilePath(long id)
        {
            return db.getFilePath(id);
        }

        private void PlayFile(long id, NetworkStream ns)
        {
            try
            {
                string filePath = GetFilePath(id);
                SM.Debug("Uploading file " + filePath);
                
                byte[] buffer;
                FileStream fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
                try
                {
                    int length = (int)fileStream.Length;  // get file length
                    buffer = new byte[128];            // create buffer
                    int count;                            // actual number of bytes read
                    //read until Read method returns 0 (end of the stream has been reached)
                    count = fileStream.Read(buffer, 0, buffer.Length);

                    while (count > 0 && MainForm.isRunning)
                    {
                        tcpServer4Audio.Send(buffer, 128, ns);
                        buffer = new byte[128];
                        count = fileStream.Read(buffer, 0, buffer.Length);
                    }

                }
                catch (Exception ex)
                {
                    Utils.WriteLine(ex.ToString(), ConsoleColor.Red);
                }
                finally
                {
                    fileStream.Close();
                }
                SM.Debug("Done Uploading file");
                ns.Close();
                //send done
            }
            catch (Exception ex)
            {
                Utils.WriteLine(ex.ToString(), ConsoleColor.Red);
            }
        }
    }
}