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

namespace MotoRepeater
{
    class SMSSendThread
    {
        private byte WAIT_SMS_SEC = 5;              // max no of seconds to wait for SMS ack
        private int MAX_SMS_SIZE = 140;       // max SMS allowed size
        private ushort smsPort = 0;
        private String mIP;
        private Int32 mPort;

        int sms_seq_id;
        public UdpClient udpClientSMS = null;
        private bool wait4ack;

        public SMSSendThread(ushort port, bool wait4ack, UdpClient _udpClientSMS)
        {
            smsPort = port;
            SMSConfirm.fillList();
            SMSConfirm.initializeTimer();
            this.wait4ack = wait4ack;
            udpClientSMS = _udpClientSMS;
        }

        public void handleConnection()
        {
            Utils.WriteLine("♥♥♥ SMS Send Thread Started on port " + smsPort);
          
            while (MotoRepeater_GW.isRunning) 
            {
                Thread.Sleep(100);
            }
        }

        Byte[] PackSMS(string msg_body, bool confirm, int p_sms_seq_id)
        {
            int msg_len = msg_body.Length;
            if (msg_len > MAX_SMS_SIZE)
            {
                msg_len = MAX_SMS_SIZE;
                //Utils.WriteLine("Warning: SMS truncated to " + msg_len + " characters");
            }

            if (msg_len > msg_body.Length)
            {
                msg_body = msg_body.Remove(MAX_SMS_SIZE);
            }
            // compute the len
            int len = msg_len;

            len *= 2; // each character is encoded on 2B            
            len += 4; // this is for the headers            
            Byte[] data = new Byte[len + 2]; //+2 for the msg size

            int msb = (len & 0xff00) >> 8;
            data[0] = (byte)(msb & 0x00ff);
            data[1] = (byte)(len & 0x00ff);

            // put the headers
            if (confirm)
            {
                data[2] = 0xe0; // first header
            }
            else
            {
                data[2] = 0xa0; // first header
            }

            data[3] = 0x00; // addr size

            byte lsb_id = (byte)(p_sms_seq_id & 0x1f);
            data[4] = (byte)(0x80 | lsb_id);
            byte msb_id = (byte)(p_sms_seq_id & 0x60); // keep bits 6:5
            data[5] = (byte)(msb_id | 0x04);

            for (int i = 0; i < msg_len; i++)
            {
                data[6 + i * 2] = (byte)msg_body[i];
                data[6 + i * 2 + 1] = 0;
            }

            //Console.WriteLine("SMS packed: " + Utils.Byte2String(data, 0, data[1] + 2) + "\n\rSMS_SeQ_ID = " + sms_seq_id);
            return data;
        }

        public void SendSMS(string SUID, string msg, bool is_ack_required, Int64 p_sms_seq_id)
        {
            SendSMS(SUID, msg, is_ack_required == true ? 1 : -1, (int)p_sms_seq_id);
        }

        public void SendSMS(string SUID, string msg, int msg_idx, int p_sms_seq_id)
        {
            try
            {
                if (msg.Contains("<JTS>") == true && msg.Contains("\r\n") == true)
                {
                    string[] TicketString = msg.Split('^');
                    msg = TicketString[0];
                    //comment or message body
                    if (TicketString.Length > 1)
                    {
                        if (TicketString[1] != "") msg += string.Format(" ({0})", TicketString[1]);
                    }
                    if (TicketString.Length > 3)
                    {
                        if (TicketString[4] != "")
                        {
                            msg += " until ";
                            msg += (Convert.ToInt32(TicketString[4])).GetDTLocalFromSeconds().ToString("dd/MM/yyyy HH:mm:ss, ddd");
                        }
                    }
                }
                int wait_confirm_sec = 0;
                if (msg_idx > 0)
                    wait_confirm_sec = WAIT_SMS_SEC;

                if (msg_idx == -1)
                    wait_confirm_sec = 0;

                if (wait_confirm_sec != 0)
                {
                    Byte[] sendBytes = PackSMS(msg, true, p_sms_seq_id);
                    Utils.WriteLine("««« SMS with confirmation [" + msg +"] to " + SUID);
                    udpClientSMS.Send(sendBytes, sendBytes.Length, Utils.ID2IP("12", SUID), smsPort);//12
                }
                else
                {
                    Byte[] sendBytes = PackSMS(msg, false, p_sms_seq_id);
                    Utils.WriteLine("««« SMS without confirmation [" + msg + "] to " + SUID);
                    udpClientSMS.Send(sendBytes, sendBytes.Length, Utils.ID2IP("12", SUID), smsPort);//12
                }
            }
            catch (Exception exc)
            {
                Utils.WriteLine("SendSMS : " + exc.ToString(), ConsoleColor.Red);
            }
        }


        public void SendSMSGroup(string SUID, string msg, bool is_ack_required, Int64 p_sms_seq_id)
        {
            SendSMSGroup(SUID, msg, is_ack_required == true ? 1 : -1, (int)p_sms_seq_id);
        }

        public void SendSMSGroup(string SUID, string msg, int msg_idx, int p_sms_seq_id)
        {
            try
            {
                Thread.Sleep(1000);
                Byte[] sendBytes = PackSMS(msg, true, p_sms_seq_id);
                Utils.WriteLine("««« Group SMS [" + msg + "] to " + SUID);
                udpClientSMS.Send(sendBytes, sendBytes.Length, Utils.ID2IP("12", SUID), smsPort);
            }
            catch (Exception exc)
            {
                SM.Debug(exc.ToString());
            }
        }

        private static void ExecuteCommand(String command)
        {
            Process p = new Process();
            p = new Process();
            p.StartInfo.FileName = "cmd.exe";
            String arguments = "/c " + command;
            p.StartInfo.Arguments = arguments;
            p.StartInfo.UseShellExecute = false;
            p.Start();
        }
    }
}