#include "rutil/ResipAssert.h"

#include "resip/stack/ParserContainerBase.hxx"
#include "resip/stack/Embedded.hxx"

using namespace resip;
using namespace std;;

const ParserContainerBase::HeaderKit ParserContainerBase::HeaderKit::Empty;

ParserContainerBase::ParserContainerBase(Headers::Type type)
   : mType(type),
     mPool(0)
{}

ParserContainerBase::ParserContainerBase(const ParserContainerBase& rhs)
   : mType(rhs.mType),
     mParsers(),
     mPool(0)
{
   copyParsers(rhs.mParsers);
}

ParserContainerBase::ParserContainerBase(Headers::Type type,
                                          PoolBase& pool)
   : mType(type),
     mParsers(StlPoolAllocator<HeaderKit, PoolBase>(&pool)),
     mPool(&pool)
{}

ParserContainerBase::ParserContainerBase(const ParserContainerBase& rhs,
                                          PoolBase& pool)
   : mType(rhs.mType),
     mParsers(StlPoolAllocator<HeaderKit, PoolBase>(&pool)),
     mPool(&pool)
{
   copyParsers(rhs.mParsers);
}

ParserContainerBase::~ParserContainerBase()
{
   freeParsers();
}

ParserContainerBase&
ParserContainerBase::operator=(const ParserContainerBase& rhs)
{
   if (this != &rhs)
   {
      freeParsers();
      mParsers.clear();
      copyParsers(rhs.mParsers);
   }
   return *this;
}

void
ParserContainerBase::pop_front() 
{
   resip_assert(!mParsers.empty());
   freeParser(mParsers.front());
   mParsers.erase(mParsers.begin());
}
 
void
ParserContainerBase::pop_back() 
{
   resip_assert(!mParsers.empty());
   freeParser(mParsers.back());
   mParsers.pop_back(); 
}

void
ParserContainerBase::append(const ParserContainerBase& source) 
{
   copyParsers(source.mParsers);
}

EncodeStream& 
ParserContainerBase::encode(const Data& headerName, 
                            EncodeStream& str) const
{
   // !jf! this is not strictly correct since some headers are allowed to
   // be empty: Supported, Accept-Encoding, Allow-Events, Allow,
   // Accept,Accept-Language 
   if (!mParsers.empty())
   {
      if (!headerName.empty())
      {
         str << headerName << Symbols::COLON[0] << Symbols::SPACE[0];
      }
         
      for (Parsers::const_iterator i = mParsers.begin(); 
           i != mParsers.end(); ++i)
      {
         if (i != mParsers.begin())
         {
            if (Headers::isCommaEncoding(mType))
            {
               str << Symbols::COMMA[0] << Symbols::SPACE[0];
            }
            else
            {
               str << Symbols::CRLF << headerName << Symbols::COLON[0] << Symbols::SPACE[0];
            }
         }

         i->encode(str);
      }

      str << Symbols::CRLF;
   }
         
   return str;
}

EncodeStream&
ParserContainerBase::encodeEmbedded(const Data& headerName, 
                                    EncodeStream& str) const
{
   resip_assert(!headerName.empty());

   if (!mParsers.empty())
   {

      bool first = true;
      for (Parsers::const_iterator i = mParsers.begin(); 
           i != mParsers.end(); ++i)
      {
         if (first)
         {
            first = false;
         }
         else
         {
            str << Symbols::AMPERSAND;
         }

         str << headerName << Symbols::EQUALS;
         Data buf;
         {
            DataStream s(buf);
            i->encode(s);
         }
         str << Embedded::encode(buf);
      }
   }
   return str;
}

void 
ParserContainerBase::copyParsers(const Parsers& parsers)
{
   mParsers.reserve(mParsers.size() + parsers.size());
   for(Parsers::const_iterator p=parsers.begin(); p!=parsers.end(); ++p)
   {
      // Copy c'tor and assignment operator for HeaderKit are actually poor
      // man's move semantics, so we have to implement real copy semantics here.
      mParsers.push_back(HeaderKit::Empty);

      HeaderKit& kit(mParsers.back());
      if(p->pc)
      {
         kit.pc = makeParser(*(p->pc));
      } 
      else 
      {
         kit.hfv = p->hfv;
      }
   }
}

void 
ParserContainerBase::freeParsers()
{
   for(Parsers::iterator p=mParsers.begin(); p!=mParsers.end(); ++p)
   {
      freeParser(*p);
   }
}

bool
ParserContainerBase::getHeaderValueByIndex(size_t index, Data& headerValue) const
{
   if (index < mParsers.size())
   {
      const HeaderKit& hk = mParsers[index];
      headerValue.empty();
      DataStream ds(headerValue);
      hk.encode(ds);
      return true;
   }
   return false;
}


/* ====================================================================
 * The Vovida Software License, Version 1.0 
 * 
 * Copyright (c) 2023 SIP Spectrum, Inc. www.sipspectrum.com
 * Copyright (c) 2005
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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