/* Copyright (C) 2025 Wildfire Games.
 * This file is part of 0 A.D.
 *
 * 0 A.D. is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * 0 A.D. is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef INCLUDED_SCRIPTMODULELOADER
#define INCLUDED_SCRIPTMODULELOADER

#include "lib/file/vfs/vfs_path.h"
#include "scriptinterface/ScriptTypes.h"

#include <unordered_map>

class ScriptContext;
class ScriptRequest;

namespace Script
{
class ModuleLoader
{
public:
	friend ScriptContext;

	class CompiledModule
	{
	public:
		CompiledModule(const ScriptRequest& rq, const VfsPath& filePath);
		JS::PersistentRootedObject m_ModuleObject;
	};

	using RegistryType = std::unordered_map<VfsPath, CompiledModule>;

	/**
	 * Load the specified module and all module it imports recursively.
	 *
	 * @param rq @c globalThis is taken from this @c ScriptRequest.
	 * @param modulePath The path to the file which should be loaded as a module.
	 */
	void LoadModule(const ScriptRequest& rq, const VfsPath& modulePath);

private:
	// Functions used by the `ScriptContext`.
	[[nodiscard]] static JSObject* ResolveHook(JSContext* cx, JS::HandleValue,
		JS::HandleObject moduleRequest) noexcept;

	RegistryType m_Registry;
};
} // namespace Script

#endif // INCLUDED_SCRIPTMODULELOADER