#include <iostream>
#include <complex>
#include <string>
#include <tuple>
#include <optional>
#include <vector>
#include <experimental/filesystem>
#include <fstream>

// FILE TASK


std::string getData() {
	std::string mainData{};

	std::string subData{};

	while (subData != "koniec") {
		std::cout << "Enter data: " << '\n';
		std::getline(std::cin, subData);
		std::cout << "\nYou entered: " << subData << '\n';

		if (subData != "koniec") mainData += " " + subData;
	}
	std::cout << "\nAll entered data: " << mainData;
	std::cout << "\nEnd data entering!\n";

	return mainData;
}

namespace fs = std::experimental::filesystem;

void fileAdder(const std::string& fname) {

	if (!fs::exists(fs::path(fname))) {

		std::ofstream file(fname);

		if (file.is_open()) {
			auto text = getData();

			file << text;

			file.close();
		}
		else {
			std::cerr << "File error!";
		}
	}
	else {
		std::cout << "File exist!";
	}
}

void showFileData(const std::string& fname) {
	if (!fs::exists(fs::path(fname))) {
		std::cout << "File not exist! Nothing to show!";
		return;
	}

	std::ifstream readFile(fname);

	std::string outData;
	std::cout << "\nFILE INCLUDED:\n";
	if (readFile.is_open()) {
		while (!readFile.eof()) {
			readFile >> outData;
			std::cout << outData << "\n";
		}
	}

}

int main() {

	std::string fname;

	std::cout<<"Entry filename to save: ";
	std::getline(std::cin, fname);

	fileAdder(fname);

	showFileData(fname);

	auto data = getData();

	std::cin.get();
	return 0;
}