base.hxx

/*
 * Copyright (C) 2024-2026 David C. Manuelda (StormBytePP)
 *
 * This file is part of StormByte-Config.
 *
 * StormByte-Config is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * or later, as published by the Free Software Foundation.
 *
 * StormByte-Config is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with StormByte-Config. If not, see
 * <https://www.gnu.org/licenses/lgpl-3.0.html>.
 */
 
#pragma once
 
#include <StormByte/config/exception.hxx>
#include <StormByte/config/item/type.hxx>
#include <StormByte/clonable.hxx>
 
#include <optional>
#include <string>
#include <type_traits>
 
namespace StormByte::Config::Item {
    class Container;
    class Group;
    class List;
    template<AllowedValueType T> class Value;
    bool STORMBYTE_CONFIG_PUBLIC IsNameValid(const std::string&) noexcept;
 
    class STORMBYTE_CONFIG_PUBLIC Base: public Clonable<Base, std::shared_ptr<Base>> {
        public:
            Base() = default;
 
            Base(const std::string& name);
 
            Base(const Base& base) = default;
 
            Base(Base&& base) noexcept = default;
 
            Base& operator=(const Base& base) = default;
 
            Base& operator=(Base&& base) noexcept = default;
 
            virtual ~Base() noexcept = default;
 
            bool operator==(const Base& other) const noexcept {
                return this->Equals(other);
            }
 
            bool operator!=(const Base& other) const noexcept {
                return !(*this == other);
            }
 
            virtual bool Equals(const Base& other) const noexcept = 0;
 
            constexpr const std::optional<std::string>& Name() const noexcept {
                return m_name;
            }
 
            constexpr void Name(const std::string& name) noexcept {
                m_name = name;
            }
 
            inline bool IsNameValid() const noexcept {
                return m_name.has_value() && Item::IsNameValid(m_name.value());
            }
 
            constexpr virtual Type Type() const noexcept = 0;
 
            virtual std::optional<CommentType> GetCommentType() const noexcept {
                return std::nullopt;
            }
 
            constexpr std::string TypeToString() const noexcept {
                return Item::TypeToString(this->Type());
            }
 
            virtual std::string Serialize(const int& indent_level) const noexcept;
 
            operator std::string() const {
                return this->Serialize(0);
            }
 
            template<typename T>
            const T& Value() const {
                if constexpr (std::is_base_of_v<std::remove_reference_t<decltype(*this)>, T>) {
                    return static_cast<const T&>(*this);
                } else if constexpr (std::is_base_of_v<std::remove_reference_t<decltype(*this)>, Item::Value<T>>) {
                    return *static_cast<const Item::Value<T>&>(*this);
                } else {
                    throw WrongValueTypeConversion("Wrong value type {} while expecting {}", this->TypeToString(), typeid(T).name());
                }
            }
 
            template<typename T>
            T& Value() {
                return const_cast<T&>(static_cast<const Base&>(*this).Value<T>());
            }
 
        protected:
            std::optional<std::string> m_name; 
    };
}