user_settings.hpp

 
 
#pragma once
 
#include "../utility/module.hpp"
#include <optional>
#include <string>
#include <string_view>
#include <cstdlib>
 
namespace hi { inline namespace v1 {
 
[[nodiscard]] std::optional<std::string> get_user_setting_string(std::string_view key);
[[nodiscard]] std::optional<long long> get_user_setting_integral(std::string_view key);
 
template<typename T>
[[nodiscard]] std::optional<T> get_user_setting(std::string_view key) = delete;
 
void set_user_setting(std::string_view key, std::string_view value);
 
void set_user_setting(std::string_view key, long long value);
 
void delete_user_setting(std::string_view key);
 
void delete_user_settings();
 
template<>
[[nodiscard]] inline std::optional<std::string> get_user_setting(std::string_view key)
{
    return get_user_setting_string(key);
}
 
template<std::integral T>
[[nodiscard]] inline std::optional<T> get_user_setting(std::string_view key)
{
    if (hilet value = get_user_setting_integral(key)) {
        if (can_narrow_cast<T>(*value)) {
            return narrow_cast<T>(*value);
        } else {
            throw std::out_of_range(std::format("Integer {} out of range", *value));
        }
    } else {
        return std::nullopt;
    }
}
 
}} // namespace hi::v1