using System;
using SafeMobileLib;

namespace MotoTrbo_GW
{
    class Utils
    {
        public static String ID2IP(string p_CAI, string p_radioIP)
        {
            uint radioID = Convert.ToUInt32(p_radioIP);
            if (radioID > 255 * 255 * 255)
                throw new Exception("Radio ID out of range");

            byte c = (byte)(radioID & 0x0000FF);
            byte b = (byte)((radioID & 0x00FF00) >> 8);
            byte a = (byte)((radioID & 0xFF0000) >> 16);

            String toReturn = "" + p_CAI + "." + a + "." + b + "." + c;
            return toReturn;
        }

        public static string Byte2String(byte[] data, int startIndex, int len)
        {
            string sdata = "";
            int i;

            if (startIndex > data.Length)
                return "";

            for (i = startIndex; i < startIndex + len && i < data.Length; i++)
            {
                int ii;
                ii = (int)data[i];
                sdata += "0x" + ii.ToString("X") + " ";
            }
            return sdata;
        }

        public static void printBytesArray(Byte[] receivedBytes, ConsoleType type)
        {
            SafeMobileLib.Utils.Write("Data: ", type);
            for (int i = 0; i < receivedBytes.Length; i++)
            {
                SafeMobileLib.Utils.Write(String.Format("0x{0:X} ", receivedBytes[i]), type);
            }
            SafeMobileLib.Utils.WriteLine("", type);
        }
        //temporat
        //public static Int32 GetSecondsLocalFromDT(DateTime param)
        //{
        //    System.DateTime datetime = param;
        //    long nOfSeconds;
        //    System.DateTime dt70 = new DateTime(1970, 1, 1, 0, 0, 0, 0);
        //    System.DateTime dttmp1 = new DateTime(1970, 1, 1, 0, 0, 0, 0);
        //    System.DateTime dttmp2;
        //    dttmp2 = dttmp1.ToLocalTime();
        //    TimeSpan span2 = dttmp2 - dttmp1;
        //    TimeSpan span = datetime - dt70;
        //    //nOfSeconds = (long)span.TotalSeconds - (long)span2.TotalSeconds -3600; //mai scot o ora - 3600
        //    if (System.TimeZone.CurrentTimeZone.IsDaylightSavingTime(param)) nOfSeconds = (long)span.TotalSeconds - (long)span2.TotalSeconds - 3600; //mai scot o ora - 3600
        //    else nOfSeconds = (long)span.TotalSeconds - (long)span2.TotalSeconds;
        //    return ((Int32)nOfSeconds);
        //}

        public static Byte[] createLocationMessage(int opCode, string suid, String[] dataString)
        {
            string msg = "";
            string seqID = GenerateSeqID(1);
            msg = "#" + seqID + "#" + opCode + "#" + suid + "#";
            msg = msg + dataString[0] + "#" + dataString[1] + "#" + dataString[2] + "#" + dataString[3];
            int totalSize = 5 + msg.Length;
            string sizeMsg = String.Format("#{0:000}", totalSize);
            msg = sizeMsg + msg;
            Byte[] toSendMulticast = new Byte[totalSize];
            System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
            Byte[] toSendMulticastPartial = encoding.GetBytes(msg);
            for (int i = 0; i < toSendMulticastPartial.Length; i++)
            {
                toSendMulticast[i] = toSendMulticastPartial[i];
            }
            toSendMulticast[totalSize - 1] = 35;//'#'            
            return toSendMulticast;
        }

        public static Byte[] createMulticastMessage(int opCode, string suid, Byte[] dataBytes, out string seqID)
        {
            seqID = GenerateSeqID(1);
            string partialMsg = "#" + seqID + "#" + opCode + "#" + suid + "#";
            int totalSize = 4 + partialMsg.Length + dataBytes.Length + 1;//
            string sizeMsg = String.Format("#{0:000}", totalSize);           
            partialMsg = sizeMsg + partialMsg;
            Byte[] toSendMulticast = new Byte[totalSize];
            System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
            Byte[] toSendMulticastPartial = encoding.GetBytes(partialMsg);
            for (int j = 0; j < toSendMulticastPartial.Length; j++)
                toSendMulticast[j] = toSendMulticastPartial[j];
            
            for (int i = 0; i < dataBytes.Length; i++)
            {
                toSendMulticast[partialMsg.Length+i] = dataBytes[i]; //data
            }
            toSendMulticast[totalSize-1] = 35;//'#'            
            return toSendMulticast;
            
            /*
            Byte[] toSendMulticast = new Byte[dataBytes.Length + 10];

            toSendMulticast[0] = 35; //#
            toSendMulticast[1] = (byte)(dataBytes.Length + 10); //length
            toSendMulticast[2] = 35; //#
            toSendMulticast[3] = 131; // opcode
            toSendMulticast[4] = 35; //#
            toSendMulticast[5] = Byte.Parse(su1); //suid byte 1
            toSendMulticast[6] = Byte.Parse(su2); //suid byte 2
            toSendMulticast[7] = Byte.Parse(su3); //suid byte 3
            toSendMulticast[8] = 35; //#
            for (int i = 0; i < dataBytes.Length; i++)
            {
                toSendMulticast[i + 9] = dataBytes[i]; //data
            }
            toSendMulticast[dataBytes.Length + 9] = 35; //#
            return toSendMulticast;
             */
        }

        /// <summary>
        /// Generates a sequence id for mbus
        /// </summary>
        /// <param name="number">The first number in sequence id, before the dot (ex: 1.323234343...)</param>
        /// <returns></returns>
        public static string GenerateSeqID(int number)
        {
            DateTime now = DateTime.Now;
            return number + "." + now.GetSecondsLocalFromDT() + now.Millisecond;
        }
    }
}