#pragma once

// MassBuilderSaveTool
// Copyright (C) 2021-2022 Guillaume Jacquemin
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

#include <Corrade/Containers/ArrayView.h>
#include <Corrade/Containers/GrowableArray.h>
#include <Corrade/Containers/Reference.h>
#include <Corrade/Containers/StaticArray.h>
#include <Corrade/Containers/String.h>
#include <Corrade/Containers/StringView.h>

#include <Magnum/Magnum.h>

#include "Types/UnrealPropertyBase.h"

#include "PropertySerialiser.h"

using namespace Corrade;
using namespace Magnum;

class UESaveFile {
    public:
        explicit UESaveFile(Containers::String filepath);

        auto valid() const -> bool;
        auto lastError() const -> Containers::StringView;

        auto reloadData() -> bool;

        auto saveType() -> Containers::StringView;

        template<typename T>
        std::enable_if_t<std::is_base_of<UnrealPropertyBase, T>::value, T*>
        at(Containers::StringView name) {
            for(auto& prop : _properties) {
                if(prop->name == name) {
                    return static_cast<T*>(prop.get());
                }
            }
            return nullptr;
        }

        void appendProperty(UnrealPropertyBase::ptr prop);

        auto props() -> Containers::ArrayView<UnrealPropertyBase::ptr>;

        auto saveToFile() -> bool;

    private:
        void loadData();

        bool _valid{false};
        Containers::String _lastError;

        Containers::String _filepath;

        bool _noReloadAfterSave = false;

        Containers::StaticArray<4, char> _magicBytes{'G', 'V', 'A', 'S'};

        UnsignedInt _saveVersion = 0;
        UnsignedInt _packageVersion = 0;
        struct {
            UnsignedShort      major = 0;
            UnsignedShort      minor = 0;
            UnsignedShort      patch = 0;
            UnsignedInt        build = 0;
            Containers::String buildId;
        } _engineVersion;

        UnsignedInt _customFormatVersion = 0;
        struct CustomFormatDataEntry {
            Containers::StaticArray<16, char> id;
            Int value = 0;
        };
        Containers::Array<CustomFormatDataEntry> _customFormatData;

        Containers::String _saveType;

        Containers::Array<UnrealPropertyBase::ptr> _properties;

        Containers::Reference<PropertySerialiser> _propSerialiser;
};