func Tesses.CrossLang.BuildTool(pm)
{
    func copyFile(src,dest)
    {
        var src = FS.Local.OpenFile(src,"rb");
        var dest = FS.Local.OpenFile(dest, "wb");
        src.CopyTo(dest);
        src.Close();
        dest.Close();
    }
    
    return {
        DirectoriesCompiled = [],
        FileReadString = (fs,path) =>{
            var f = fs.OpenFile(path,"rb");
            var ms = FS.MemoryStream(true);
            f.CopyTo(ms);
            var text = ms.GetBytes().ToString();
            f.Close();
            ms.Close();
            return text;
        },
        GetPackageDependencies = (this,name,version,dir)=>{
            var dep = pm.GetPackage(name,version);
            if(TypeOf(dep) == "Null") throw $"Package {name} with version {version} does not exist";
            var pkgPath = dir / $"{name}-{version}.crvm";
            var strm = FS.Local.OpenFile(pkgPath,"wb");
            strm.WriteBlock(dep,0,dep.Count);
            strm.Close();
            var ms = MemoryStream(true);
            ms.WriteBlock(dep,0,dep.Count);
            ms.Seek(0,0);
            var package = Tesses.CrossLang.CrossVMFile();
            package.Load(ms);
            ms.Close();

            var deps = [];

            each(var dep : package.Dependencies)
            {
                deps.Add(this.GetPackageDependencies(dep.Name, dep.Version, dir));
            }


            return {
                Name = name,
                Version = version,
                Info = package.Info,
                Dependencies = deps,
                Output = pkgPath
            };
        },
        BuildProject = (this,projectDirectory)=>{
            
            var dir = FS.MakeFull(projectDirectory);
            var dirStr = dir.ToString();
            
            each(var item : this.DirectoriesCompiled)
            {
                if(item.Path == dirStr) return item.Data;
            }

            var crossConf = dir / "cross.json";
            if(FS.Local.FileExists(crossConf))
            {
                var configData = Json.Decode(this.FileReadString(FS.Local,crossConf));
                var info = {type = "console"};
                var name = "out";
                var version = "1.0.0.0-prod";
                var outputDir = "bin";
                var objDir = "obj";
                var srcDir = "src";
                var resDir = "res";
                if(TypeOf(configData.name) != "Undefined")
                    name = configData.name;
                
                if(TypeOf(configData.version) != "Undefined")
                    version = configData.version;
                if(TypeOf(configData.bin_directory) != "Undefined")
                    outputDir = configData.bin_directory;
                
                if(TypeOf(configData.obj_directory) != "Undefined")
                    outputDir = configData.obj_directory;
                if(TypeOf(configData.source_directory) != "Undefined")
                    srcDir = configData.source_directory;
                if(TypeOf(configData.resource_directory) != "Undefined")
                    resDir = configData.resource_directory;
                if(TypeOf(configData.info) != "Undefined")
                    info = configData.info;

                FS.Local.CreateDirectory(dir / outputDir);

                FS.Local.CreateDirectory(dir / objDir / "packages");

                FS.Local.CreateDirectory(dir/resDir);
                
                var dependencies = [];
                if(TypeOf(configData.project_dependencies) == "List")
                {
                    each(var dep : configData.project_dependencies)    
                    {
                        dependencies.Add(this.BuildProject(dep));
                    }
                }
                var sources = [];
                if(TypeOf(configData.dependencies) == "List")
                {
                    each(var dep : configData.project_dependencies)    
                    {
                        dependencies.Add(this.GetPackageDependencies(dep.Name,dep.Version,dir / objDir / "packages"));
                    }
                }

                each(var item : this.DirectoriesCompiled)
                {
                    if(item.Path == dirStr) return item.Data;
                }


                func walk_for_compiling(item,dir2)
                {
                    if(item.Info.type == "compile_tool")
                    {
                        var newDir = dir / objDir / $"{item.Name}-{item.Version}";
                        FS.Local.CreateDirectory(newDir);
                        var newFile = newDir / $"{item.Name}-{item.Version}.crvm";

                        copyFile(item.Output, newFile);
                        each(var item2 : item.Dependencies)
                        {
                            walk_for_compiling(item2, newDir);
                        }
                        //we need to load this
                        var env = VM.CreateEnvironment({});
                        env.RegisterEverything();
                        env.LockRegister();

                        env.LoadFileWithDependencies(FS.Local,newFile);
                        env.GetDictionary().RunTool({
                                Project = FS.SubdirFilesystem(FS.Local, dir),
                                ProjectInfo = info,
                                GeneratedSource = sources
                            });
                    }
                    else 
                    {
                        copyFile(item.Output, dir2 / $"{item.Name}-{item.Version}.crvm");
                        each(var item2 : item.Dependencies)
                        {
                            walk_for_compiling(item2, dir2);   
                        }
                    }
                }

                var file_deps = [];

                each(var dep : dependencies)
                {
                    if(dep.Info.type == "lib") 
                    {
                        file_deps.Add({
                            Name = dep.Name,
                            Version = dep.Version
                        });
                    }
                    walk_for_compiling(dep,dir / outputDir);
                }

                func walk_for_source(sourceDir)
                {
                    each(var file : FS.Local.EnumeratePaths(sourceDir))
                    {
                        if(FS.Local.RegularFileExists(file))
                        {
                            var src = {
                                FileName = file.ToString(),
                                Source = this.FileReadString(FS.Local, file)
                            };
                            sources.Add(src);
                        }
                        else if(FS.Local.DirectoryExists(file))
                        {
                            walk_for_source(file);
                        }
                    }
                }

                walk_for_source(dir / srcDir);


                var output = $"{name}-{version}.crvm";
                var outFile = FS.Local.OpenFile(dir / outputDir / output,"wb");
                
                var result = VM.Compile({
                    Name = name,
                    Version = version,
                    Sources = sources,
                    Info = Json.Encode(info),
                    ResourceFileSystem = FS.SubdirFilesystem(FS.Local, dir / resDir),
                    Dependencies = file_deps,
                    Output = outFile
                });

                outFile.Close();
                if(!result.Success)
                {
                    throw result.Reason;
                }

                var myData = {
                    Name = name,
                    Version = version,
                    Info = info,
                    Output = dir / outputDir / output,
                    Dependencies = dependencies
                };
                this.DirectoriesCompiled.Add({
                    Path = dirStr,
                    Data = myData
                });

                return myData;
            }
            return null;
        }
    };
}