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.Simoco
{
    /// <summary>
    /// Class that generates Sip messages used for Simoco
    /// </summary>
    internal class SimocoSipMessageGenerator : SipMessageGenerator
    {

        /// <summary>
        /// Generates a Sip message using the specified parameters
        /// </summary>
        /// <param name="destinationID"></param>
        /// <param name="senderID"></param>
        /// <param name="sipServer"></param>
        /// <param name="sipServerPort"></param>
        /// <param name="text"></param>
        /// <returns></returns>
        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";
            // Softul de pe AIS are nevoie de punct si virgula (;) dupa short-data
            sipMessage.Header.Add("Ais-Service", "short-data;");
            sipMessage.Header.Add("Ais-Options", "service-attributes; coding=unicode-16");
            sipMessage.Header.Add("Content-Transfer-Encoding", "base64");
            sipMessage.Body = Convert.ToBase64String(Encoding.BigEndianUnicode.GetBytes(text));

            return sipMessage;
        }
    }
}