#ifndef CORE_SCRIPTLOADER_H
#define CORE_SCRIPTLOADER_H

#include <unordered_map>
#include <set>

#include "NativeScriptApi.h"
#include "ScriptInfo.h"

#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN

#include <winbase.h>
using ModuleHandle = HMODULE;
#else
#include <dlfcn.h>
using ModuleHandle = void*;
#endif

namespace Core {
namespace Scripting {

   /*!
    * Provides low level functionality for loading modules on different platforms along with managing those loaded modules.
    */
   class ScriptLoader
   {
   protected:
      /*!
       * The internal list of all modules that are loaded.
       */
      std::unordered_map< std::string, ScriptInfo* > m_scriptMap;

      /*!
       * Unload a loaded module from it's ModuleHandle
       * @return true if the unload was successful, false if not
       */
      bool unloadModule( ModuleHandle );

   public:
      ScriptLoader() = default;

      /*!
       * Gets the module file extention for the current platform (windows, linux, osx)
       * @return The file extension for the current platform
       */
      const std::string getModuleExtension();

      /*!
       * Load a module from a path
       * @return A pointer to ScriptInfo if the load was successful, nullptr if it failed
       */
      ScriptInfo* loadModule( const std::string& );

      /*!
       * Unload a script from it's ScriptInfo object
       * @return true if successful, false if not
       */
      bool unloadScript( ScriptInfo* );

      /*!
       * Unload a script via it's module handle
       * @return true if successful, false if not
       */
      bool unloadScript( ModuleHandle );

      /*!
       * Look up a ScriptInfo* by a module name
       * @param name The exact module name to search for, case-sensitive
       * @return The ScriptInfo ptr if successful, nullptr if it wasn't found
       */
      ScriptInfo* getScriptInfo( std::string name );

      /*!
       * Get all scripts assoicated with a module
       * @param handle The handle to the module
       * @return An array of unknown size ending with nullptr if success, nullptr if not
       */
      ScriptObject** getScripts( ModuleHandle handle );

      /*!
       * Checks to see if a module with the specified name exists
       * @param name The module name to lookup
       * @return true if loaded, false if not
       */
      bool isModuleLoaded( std::string name );

      /*!
       * Case-insensitive search for modules, useful for debug commands
       * @param scripts a set of ScriptInfo ptrs
       * @param search the search term
       */
      void findScripts( std::set< Core::Scripting::ScriptInfo* >& scripts, const std::string& search );
   };

}
}




#endif // CORE_SCRIPTLOADER_H