// TJP COPYRIGHT HEADER


#ifdef TJP_CORE_HEADER_ONLY
	#pragma once
#endif

#include <tjp/core/header_only/compile.h>

#include "read.hpp"

#include <tjp/core/exception/Exception.hpp>
#include <cstdio>
#include <fstream>


namespace tjp::core::file {

TJP_CORE_HEADER_ONLY_INLINE
Optional<Contents> read(const String& path)
{
	std::ifstream file(path, std::ios::ate | std::ios::binary);
	bool exists = (bool)file;

	if (!exists || !file.is_open())
		return {};

	size_t fileSize = (size_t)file.tellg();
	Contents buffer(fileSize);

	file.seekg(0);
	file.read(buffer.data(), buffer.size());
	file.close();

	return buffer;
};

TJP_CORE_HEADER_ONLY_INLINE
Contents require_read(const String& path)
{
	if (auto result = read(path))
		return *result;
		
	throw Exception { "failed to read file " + String(path) };
}

TJP_CORE_HEADER_ONLY_INLINE
Optional<Contents> read(const StringView& path)
{
	return read(String(path));
}

TJP_CORE_HEADER_ONLY_INLINE
Contents require_read(const StringView& path)
{
	return require_read(String(path));
}




} // namespace