#include "file_manager.hpp"

namespace big
{
	bool file_manager::init(const std::filesystem::path& base_dir)
	{
		m_base_dir = base_dir;
		file_manager::ensure_folder_exists(m_base_dir);

		return true;
	}

	const std::filesystem::path& file_manager::get_base_dir()
	{
		return m_base_dir;
	}

	file file_manager::get_project_file(std::filesystem::path file_path)
	{
		if (file_path.is_absolute())
			throw std::invalid_argument("Project files are relative to the BaseDir, don't use absolute paths!");
		if (file_path.string().contains(".."))
			throw std::invalid_argument("Relative path traversal is not allowed, refrain from using \"..\" in file paths.");

		return file_manager::ensure_file_can_be_created(m_base_dir / file_path);
	}

	folder file_manager::get_project_folder(std::filesystem::path folder_path)
	{
		if (folder_path.is_absolute())
			throw std::invalid_argument("Project folders are relative to the BaseDir, don't use absolute paths!");
		if (folder_path.string().contains(".."))
			throw std::invalid_argument("Relative path traversal is not allowed, refrain from using \"..\" in folder paths.");

		return file_manager::ensure_folder_exists(m_base_dir / folder_path);
	}

	std::filesystem::path file_manager::ensure_file_can_be_created(const std::filesystem::path file_path)
	{
		file_manager::ensure_folder_exists(file_path.parent_path());

		return file_path;
	}

	std::filesystem::path file_manager::ensure_folder_exists(const std::filesystem::path folder_path)
	{
		bool create_path = !exists(folder_path);

		if (!create_path && !is_directory(folder_path))
		{
			remove(folder_path);
			create_path = true;
		}
		if (create_path)
			create_directories(folder_path);

		return folder_path;
	}
}