/*
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */

#include "ExeAppendedZipLoader.hpp"
#include "Base/Logger.hpp"
#include "IO/Archive/ArchiveReader.hpp"
#include <filesystem>
#include <fstream>

namespace OpenVulkano
{
	std::string ExeAppendedZipLoader::GetResourcePath(const std::string& resourceName)
	{
		return GetCurrentExecutablePath();
	}

	Array<char> ExeAppendedZipLoader::GetResource(const std::string& exeName)
	{
		std::string ext = std::filesystem::path(exeName).extension().string();
		if (ext != ".exe" && ext != "")
		{
			Logger::DATA->debug("Given file {} is not a valid executable", exeName);
			return {};
		}

		std::ifstream ifs(exeName, std::ios::in | std::ios::binary);
		if (!ifs.is_open())
		{
			Logger::DATA->debug("Could not open file {}.", exeName);
			return {};
		}
		ifs.seekg(0, std::ios_base::end);
		size_t zipSize = ifs.tellg();
		ifs.seekg(0, std::ios_base::beg);
		Array<char> zipData(zipSize);
		ifs.read(zipData.Data(), zipSize);
		ifs.close();
		return zipData;
	}

	std::vector<std::pair<FileDescription, Array<char>>> ExeAppendedZipLoader::GetZipArchiveFiles(const std::string& exePath)
	{
		Array<char> zipData = GetResource(exePath);
		ArchiveReader reader(zipData.Data(), zipData.Size(), nullptr, ArchiveType::ZIP);
		std::vector<std::pair<FileDescription, Array<char>>> filesFromZip;
		while (reader.HasNext())
		{
			filesFromZip.push_back(*reader.GetNextFile());
		}
		return filesFromZip;
	}

}