using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using SafeMobileLib;
using System.Threading;
using System.Drawing;

namespace SDRgateway
{
    class MessageBuss
    {
        private string messageBusIP;
        private int messageBusPort;
        private GeneralLocationManager GM;
        private Thread t_GPS;
        private Thread t_EVENT;
        private Thread t_SMS;
        private static UdpMulticast udp;
        private SDR parentSDR =null;

        public MessageBuss(string messageBusIP, string messageBusPort, SDR _parentSDR)
        {
            this.messageBusIP = messageBusIP;
            this.messageBusPort =Convert.ToInt32(messageBusPort);
            this.parentSDR = _parentSDR;
            try
            {
                udp = new UdpMulticast(messageBusIP, this.messageBusPort);
                Utils.WriteLine("MessageBuss ip:" + messageBusIP + " port:" + this.messageBusPort);
                //Main.activityQueue.PostItem(new RepString("MessageBuss ip:" + messageBusIP + " port:" + this.messageBusPort, Color.Green));

                udp.OnNewDataRecv += new UdpMulticast.newData4Send(udp_OnNewDataRecv);
                udp.StartListen();
            }
            catch (Exception ex)
            {
                Utils.WriteLine("MessageBuss exception while joining the message bus: " + ex.ToString(), ConsoleColor.Red);
                //Main.activityQueue.PostItem(new RepString("Error:" + ex.Message, Color.Red));
            }

            //start messageBus for location
            GM = new GeneralLocationManager(udp);

            //start Process thread (handle GPS)
            t_GPS = new Thread(new ThreadStart(Process_GPS));
            t_GPS.IsBackground = true;
            t_GPS.Start();

            
            //start Process thread (handle EVENTS)
            t_EVENT = new Thread(new ThreadStart(Process_EVENT));
            t_EVENT.IsBackground = true;
            t_EVENT.Start();
             

            //start Process thread (handle SMS)
            t_SMS = new Thread(new ThreadStart(Process_SMS));
            t_SMS.IsBackground = true;
            t_SMS.Start();
        }

        public static DateTime UnixTimeStampToDateTime(int unixTimeStamp)
        {
            // Unix timestamp is seconds past epoch
            System.DateTime dtDateTime = new DateTime(1970, 1, 1, 0, 0, 0, 0);
            dtDateTime = dtDateTime.AddSeconds(unixTimeStamp).ToLocalTime();
            return dtDateTime;
        }

        void udp_OnNewDataRecv(byte[] data, int dataLen)
        {
            try
            {
                string str = System.Text.Encoding.ASCII.GetString(data, 0, dataLen);

                //Utils.WriteLine($"--- MB [{str}]", ConsoleColor.Green);

                String[] tempArray = str.Trim().Split(new char[]{'#'});//, StringSplitOptions.RemoveEmptyEntries);
                if (tempArray.Length > 3)
                {
                    //SMS message
                    if (tempArray[3].Equals("142") || tempArray[3].Equals("143"))
                    {
                        Utils.WriteLine("On SMS Request received [" + str.Trim() + "]");
                        //Main.activityQueue.PostItem(new RepString("RX(multi SMS): " + str.Trim(), Color.DarkOrange));
                        // Console.WriteLine("SMSSendThread received from multicast bus: " + str.Trim());
                        int sched_timeGMT = 0;
                        if (tempArray.Length > 6)
                            sched_timeGMT = Convert.ToInt32(tempArray[6]);
                        // Console.WriteLine("SMS sched time={0} and current time ={1}",sched_timeGMT, DBmanager.DateTo70Format(DateTime.Now.ToUniversalTime()));
                        int gwid_recv = Convert.ToInt32((tempArray[4].Split('.'))[0]);


                        OnSDSRequest(Int64.Parse(tempArray[4].Split('.')[2]), gwid_recv, 
                            Convert.ToInt32((tempArray[4].Split('.'))[1]), 
                            tempArray[5], sched_timeGMT, tempArray[2]);

                        /*
                        if (sched_timeGMT <= (DBmanager.DateTo70Format(DateTime.Now.ToUniversalTime())+60))
                        {
                            Console.WriteLine("Past time check!!!!");
                            String IMEI = (tempArray[4].Split('.'))[2];

                            msgCell cell = new msgCell();
                            cell.IMEI = IMEI;
                            cell.sms = tempArray[5];
                            Program.smsOutQueue.PostItem(cell);

                            string test = "#242#1#";
                            String cmdok = "#" + tempArray[2] + test;
                            Int32 tmp = cmdok.Length + 1;
                            tmp += tmp.ToString().Length;
                            cmdok = "#" + tmp.ToString() + cmdok;
                            System.Text.Encoding enc = System.Text.Encoding.ASCII;
                            byte[] buf = enc.GetBytes(cmdok);
                            //send SMS ack
                            udp.Send(buf, buf.Length);
                        }
                         */

                    }//if (tempArray[3].Equals("142") || tempArray[3].Equals("143"))

                    if (tempArray[3].Equals("154"))
                    {
                        Utils.WriteLine("On Poll Request received [" + str.Trim() + "]");
                        //Main.activityQueue.PostItem(new RepString("RX(multi POLL): " + str.Trim(), Color.DarkOrange));
                        string SUID = (tempArray[4].Split('.'))[2];

                        try
                        {
                            if (tempArray.Length > 6)
                                OnPollRequest?.Invoke(Int64.Parse(SUID), int.Parse(tempArray[5]) == 1 ? true : false, tempArray[2]);
                            else
                                OnPollRequest?.Invoke(Int64.Parse(SUID), true, tempArray[2]);
                        }
                        catch (Exception ex)
                        {
                            Utils.WriteLine("Exception Poll request received: " + ex.ToString(), ConsoleColor.Red);

                            OnPollRequest?.Invoke(Int64.Parse(SUID), true, tempArray[2]);
                        }

                            //parentSDR.Send_Imed_Loc_req(Convert.ToUInt32(SUID), false);
                    }

                    if (tempArray[3].Equals("209"))
                    {
                        // raise event for units changed in the admin module
                        OnUnitsUpdated?.Invoke();
                    }

                    //receive CallOut
                    if (tempArray[3].Equals("177"))
                    {
                        string SUID = (tempArray[4]);
                        Utils.WriteLine("On CallOut Request received [" + str.Trim() + "]");
                        try
                        {
                            OnCallOutRequest?.Invoke(UInt32.Parse(tempArray[4]), UInt16.Parse(tempArray[5]), tempArray[6]);                         
                        }
                        catch (Exception ex)
                        {
                            Utils.WriteLine("Exception CallOut request received: " + ex.ToString(), ConsoleColor.Red);

                            OnCallOutRequest?.Invoke(UInt32.Parse(tempArray[4]), UInt16.Parse(tempArray[5]), tempArray[6]);
                        }


                    }

                    //receive CallOut Stop
                    if (tempArray[3].Equals("178"))
                    {
                        string SUID = (tempArray[4]);
                        Utils.WriteLine("On CallOut Stop Request received [" + str.Trim() + "]");
                        OnCallOutStopRequest?.Invoke(UInt32.Parse(tempArray[4]), UInt16.Parse(tempArray[5]));
                    }

                }//if (tempArray.Length > 3)


            }
            catch (Exception ex)
            {
                SM.Debug(ex.ToString());
                //Main.activityQueue.PostItem(new RepString("Error:" + ex.Message, Color.Red));
            }
        }
        private double LATtest = 0;
        private double LNGtest = 0;
        private double Speedtest = 0;

        private void Process_GPS()
        {
            Utils.WriteLine("Message buss message handler for GPS started!!!");
            //Main.activityQueue.PostItem(new RepString("Message buss message handler for GPS started!!!", Color.DarkOrange));
            while (true)
            {
                try
                {
                    msgCell cell = Program.gpsQueue.GetItem(100);
                    if (cell != null)
                    {
                        if (cell.msg == MSG_TYPE.GPS || cell.msg == MSG_TYPE.GPSpoll)
                        {
                            uint time70 = cell.time.DateTo70Format();
                            //if (cell.time70 != 0) time70 = cell.time70;
                            //double tempSpeed = double.Parse(cell.spd);
                            //tempSpeed = tempSpeed * 3.6; // convert from knots to KM
                            //cell.spd = ((int)tempSpeed).ToString();

                            // test before LAT LNG SPEED before put on the message bus
                             if ((Double.TryParse(cell.lat, out LATtest))&&(Double.TryParse(cell.lng, out LNGtest))&&(Double.TryParse(cell.spd, out Speedtest)))
                             if ((LATtest<90)&&(LATtest>-90)&&(LNGtest<180)&&(LNGtest>-180)&&(Speedtest<250))
                                 GM.SendLoc2messagebus(cell.IMEI, time70, cell.spd, cell.lat, cell.lng, cell.poll);
                             else GM.SendLoc2messagebus(cell.IMEI, time70, "0", "0", "0", cell.poll);
                            //Main.activityQueue.PostItem(new RepString("GPS sent on messagebuss", Color.DarkOrange));
                        }
                    }
                    Thread.Sleep(1);
                }
                catch (Exception ex)
                {
                    Utils.WriteLine("Error in MessageBuss/Process \n" + ex.ToString(), ConsoleColor.Red);
                    Thread.Sleep(1000);
                    //Main.activityQueue.PostItem(new RepString("Error:" + ex.Message, Color.Red));
                }
            }
        }

        private void Process_EVENT()
        {
            Utils.WriteLine("Message buss message handler for EVENTS started!!!");
            //Main.activityQueue.PostItem(new RepString("Message buss message handler for EVENTS started!!!", Color.DarkOrange));
            while (true)
            {
                try
                {
                    msgCell cell = Program.eventQueue.GetItem(100);
                    if (cell != null)
                    {
                        if (cell.msg == MSG_TYPE.ARS)
                        {
                            String seqID = "0." + (DateTime.Now.GetSecondsLocalFromDT()) + DateTime.Now.Millisecond.ToString();
                            string msg = "#130#" + cell.IMEI + "#" + ((cell.ars==1)?"ON":"OFF") + "#";
                            SendOnMsgBuss(seqID, msg);

                            //Main.activityQueue.PostItem(new RepString("ARS sent on messagebuss", Color.DarkOrange));
                        }

                        if (cell.msg == MSG_TYPE.Emergency)
                        {
                            String seqID = "0." + (DateTime.Now.GetSecondsLocalFromDT()) + DateTime.Now.Millisecond.ToString();
                            string msg = "#138#" + cell.IMEI + "#";
                            SendOnMsgBuss(seqID, msg);

                            // request gps position after each emergency
                            if (OnPollRequest != null)
                                OnPollRequest(Int64.Parse(cell.IMEI), true, seqID);
                        }

                    }
                    Thread.Sleep(1);
                }
                catch (Exception ex)
                {
                    Utils.WriteLine("Error in MessageBuss/Process \n" + ex.ToString(), ConsoleColor.Red);
                    //Main.activityQueue.PostItem(new RepString("Error:" + ex.Message, Color.Red));
                    Thread.Sleep(1000);
                }
            }
        }

        private void Process_SMS()
        {
            Utils.WriteLine("###################", ConsoleColor.Yellow);
            Utils.WriteLine("Message buss message handler for SMS started!!!", ConsoleColor.Yellow);
            Utils.WriteLine("###################", ConsoleColor.Yellow);
           
            //Main.activityQueue.PostItem(new RepString("Message buss message handler for SMS started!!!", Color.DarkOrange));
            while (true)
            {
                try
                {
                    msgCell cell = Program.smsINQueue.GetItem(100);
                    if (cell != null)
                    {
                        if (cell.msg == MSG_TYPE.SMS)
                        {
                            String seqID = "0." + (DateTime.Now.GetSecondsLocalFromDT()) + DateTime.Now.Millisecond.ToString();
                            string msg = "#132#" + cell.IMEI + "#" + cell.sms + "#hyt#";
                            Utils.WriteLine("SMS [" + cell.sms + "] Received from " + cell.IMEI, ConsoleColor.Yellow);
                            SendOnMsgBuss(seqID, msg);
                        }
                    }
                    Thread.Sleep(1);
                }
                catch (Exception ex)
                {
                    Utils.WriteLine("Error in MessageBuss/Process \n" + ex.ToString(), ConsoleColor.Red);
                    //Main.activityQueue.PostItem(new RepString("Error:" + ex.Message, Color.Red));
                    Thread.Sleep(1000);
                }
            }
        }


        public static void SendOnMsgBuss(string seqID, string test)
        {
            if (udp != null)
            {
                byte[] toSend = SafeMobileLib.Utils.Convert_text_For_multicast("#" + seqID + test);
                udp.Send(toSend, toSend.Length);
                Utils.WriteLine(String.Format("+++ MB [{0}] ", Utils.ConvertBytesToString(toSend)), ConsoleColor.White);                                   
            }
            else
            {
                Utils.WriteLine("Error!!! SendOnMsgBuss messagebus =null", ConsoleColor.Red);
            }
        }


        #region EVENTS REGION
        public delegate void UnitsUpdated();
        public event UnitsUpdated OnUnitsUpdated;
        public delegate void PollRequest(Int64 radioID, bool isLong, string seqNumber);
        public event PollRequest OnPollRequest;
        public delegate void SDSRequest(Int64 radioID, Int64 gatewayID, Int64 gatewayRadioID, string message, int type, string seqID);
        public event SDSRequest OnSDSRequest;
        public delegate void CallOut(UInt64 destISSI, UInt16 callOutSeverity, string GeoName);
        public event CallOut OnCallOutRequest;
        public delegate void CallOutStop(UInt64 destISSI, UInt16 callOutSeverity);
        public event CallOutStop OnCallOutStopRequest;
        #endregion
    }
}