#pragma once

#include <std_fs>

#include <stdfwd/optional>

#include <stdfwd/string>

#include <stdfwd/string_view>

//------------------------------------------------------------------------------

namespace fs

{

class FileSystem;

}

namespace project

{

class Project;

}

namespace cmake_project

{

class Project;

}

//------------------------------------------------------------------------------

namespace model_includes

{

class StdLibrary;

class ResolverContext;

enum class FileType;

//------------------------------------------------------------------------------

class Resolver

{

public:

using Path = stdfs::path;

using PathOpt = std::optional< Path >;

explicit Resolver( const fs::FileSystem & _fs );

PathOpt resolvePath(

const project::Project & _project,

const cmake_project::Project * _cmakeProject,

const Path & _startFile,

stdfwd::string_view _fileName,

PathOpt currentCMakeSourceFile ) const;

static FileType resolveFileType( const Path & _file );

private:

PathOpt checkInCurrentDir( const ResolverContext & _context ) const;

PathOpt findInIncludeFolders( const ResolverContext & _context ) const;

PathOpt

findInIncludeFoldersInProject( const ResolverContext & _context ) const;

PathOpt findInIncludeFoldersInCMakeProject(

const ResolverContext & _context ) const;

PathOpt findFile(

const Path & _projectDir,

const Path & _includeDir,

const std::string & _fileName ) const;

bool isExistFile( const Path & _filePath ) const;

static const StdLibrary & getStdLibrary();

private:

const fs::FileSystem & m_fs;

};

//------------------------------------------------------------------------------

}