#include "CrossLang.hpp"
#include <iostream>
#include <fstream>
#include <sstream>
#include <vector>
using namespace Tesses::Framework;
using namespace Tesses::Framework::Filesystem;

namespace Tesses::CrossLang::Programs {
TObject CrossLangInterperter(GCList& ls,TRootEnvironment* env,std::vector<std::string>& argv)
{
    std::shared_ptr<GC> gc = ls.GetGC();    
    if(argv.size() > 1)
    {
        std::ifstream strm(argv[1],std::ios_base::in|std::ios_base::binary);
        std::vector<LexToken> tokens;
        Lex(argv[1],strm,tokens);

        Parser parser(tokens);

        CodeGen gen;

        auto sfs = std::make_shared<SubdirFilesystem>(LocalFS,VFSPath("."));
        gen.embedFS = sfs;
        gen.GenRoot(parser.ParseRoot());
        std::vector<uint8_t> data;
        {
            auto strm2 = std::make_shared<Tesses::Framework::Streams::MemoryStream>(true);
            gen.Save(strm2);

        
            {
                TFile* file = TFile::Create(ls);

                strm2->Seek(0,Tesses::Framework::Streams::SeekOrigin::Begin);
                file->Load(gc,strm2);
    
                env->LoadFile(gc, file);

            
            }
        }

        TList* args = TList::Create(ls);
        for(int arg=1;arg<argv.size();arg++)
            args->Add(std::string(argv[arg]));
   
        return env->CallFunctionWithFatalError(ls,"main",{args});
    
   
    }
    else
    {
    
   
        while(true)
        {
            std::cout << "> ";
            std::string source;
            std::getline(std::cin,source);

            auto strm2 = std::make_shared<Tesses::Framework::Streams::MemoryStream>(true);

            if(source.find("loadfile ") == 0)
            {
                std::string filename = source.substr(9);

                std::ifstream strm(filename,std::ios_base::in|std::ios_base::binary);
                std::vector<LexToken> tokens;
                Lex(filename,strm,tokens);

                Parser parser(tokens);

                CodeGen gen;

                auto sfs = std::make_shared<SubdirFilesystem>(LocalFS,VFSPath("."));
                gen.embedFS = sfs;
                gen.GenRoot(parser.ParseRoot());
                
                gen.Save(strm2);

            }
            else if(source == "exit")
            {
                return (int64_t)0;
            }
            else
            {
                std::vector<LexToken> tokens;
                std::stringstream strm(source,std::ios_base::in | std::ios_base::binary);
                Lex("lexed.tcross",strm,tokens);

                Parser parser(tokens);

                CodeGen gen;

                auto sfs = std::make_shared<SubdirFilesystem>(LocalFS,VFSPath("."));
                gen.embedFS = sfs;

                gen.GenRoot(parser.ParseRoot());
                
                gen.Save(strm2);
            }

            {
                
            TFile* file = TFile::Create(ls);

            strm2->Seek(0,Tesses::Framework::Streams::SeekOrigin::Begin);
            file->Load(gc,strm2);
    
            env->LoadFile(gc, file);

                
            }   

    
        }
    }

    return (int64_t)0;
}

}