using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Independentsoft.Sip.Methods;
using Independentsoft.Sip;

namespace SipComponent.Excera
{
    public class ExceraSipMessageGenerator : SipMessageGenerator
    {
        public override Message Generate(string destinationID, string senderID, string sipServer, int sipServerPort, string text, bool groupSms = false)
        {
            Message sipMessage = base.Generate(destinationID, senderID, sipServer, sipServerPort, text);

            sipMessage.ContentType = "application/octet-stream";
            sipMessage.Header.Add("Content-Encoding", "base64");
            sipMessage.Header.Add("Ais-Msg-Options", "service-attributes;transmission-type=defined;coding=unicode-16;rate=three-quarter");
            if (groupSms)
                sipMessage.Header.Add("Ais-Reach", "group");
            else
                sipMessage.Header.Add("Ais-Reach", "individual");
            sipMessage.Header.Add("Ais-Service", "short-data");

            sipMessage.Body = Convert.ToBase64String(Encoding.BigEndianUnicode.GetBytes(text));

            return sipMessage;
        }
    }
}