#pragma once

#include <string>
#include <optional>
#include <fstream>
#include <stdexcept>

// Razlicite pomocne funkcije za tekstove
namespace fsh::util {

    extern const char* tokens[];

    template <class T>
    static inline std::optional<std::string> mk_optional(T t) {
        if (t) { return t->gvalue(); }
        return std::optional<std::string>();
    }

    static inline bool contains(char x, std::string text) {
        for (const auto& chr : text) {
            if (chr == x) return 1;
        }
        return 0;
    };

    static inline std::ifstream input(const std::string& x) {
        std::ifstream in(x, std::ios::in);
        if (!in) { throw std::runtime_error("Can't open file"); }
        return in;
    }

    static inline std::ofstream output(const std::string& x) {
        std::ofstream out(x, std::ios::out);
        if (!out.is_open()) { throw std::runtime_error("Can't open file"); }
        return out;
    }

    static inline std::ofstream output_append(const std::string& x) {
        std::ofstream out(x, std::ios::app | std::ios::out);
        if (!out.is_open()) { throw std::runtime_error("Can't open file"); }
        return out;
    }

}