#pragma once

// MassBuilderSaveTool
// Copyright (C) 2021 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 <string>

#include <Corrade/Containers/Optional.h>
#include <Corrade/Containers/Pointer.h>
#include <Corrade/Containers/StaticArray.h>

#include <Magnum/Magnum.h>
#include <Magnum/Math/Color.h>
#include <Magnum/Math/Vector2.h>
#include <Magnum/Math/Vector3.h>

#include "../UESaveFile/UESaveFile.h"

using namespace Corrade;
using namespace Magnum;

struct Joints {
    Float neck      = 0.0f;
    Float body      = 0.0f;
    Float shoulders = 0.0f;
    Float hips      = 0.0f;
    Float upperArms = 0.0f;
    Float lowerArms = 0.0f;
    Float upperLegs = 0.0f;
    Float lowerLegs = 0.0f;
};

struct CustomStyle {
    std::string name;
    Color4 colour{0.0f};
    Float metallic = 0.5f;
    Float gloss = 0.5f;
    bool glow = false;

    Int patternId = 0;
    Float opacity = 0.5f;
    Vector2 offset{0.5f};
    Float rotation = 0.0f;
    Float scale = 0.5f;
};

struct Decal {
    Int id = -1;
    Color4 colour{0.0f};
    Vector3 position{0.0f};
    Vector3 uAxis{0.0f};
    Vector3 vAxis{0.0f};
    Vector2 offset{0.5f};
    Float scale = 0.5f;
    Float rotation = 0.0f;
    bool flip = false;
    bool wrap = false;
};

struct Accessory {
    Int attachIndex = -1;
    Int id = -1;
    Containers::StaticArray<2, Int> styles{ValueInit};
    Vector3 relativePosition{0.0f};
    Vector3 relativePositionOffset{0.0f};
    Vector3 relativeRotation{0.0f};
    Vector3 relativeRotationOffset{0.0f};
    Vector3 localScale{1.0f};
};

struct ArmourPart {
    std::string slot;
    Int id = 0;
    Containers::StaticArray<4, Int> styles{ValueInit};
    Containers::StaticArray<8, Decal> decals{ValueInit};
    Containers::StaticArray<8, Accessory> accessories{ValueInit};
};

struct WeaponPart {
    Int id = 0;
    Containers::StaticArray<4, Int> styles{ValueInit};
    Containers::StaticArray<8, Decal> decals{ValueInit};
    Containers::StaticArray<8, Accessory> accessories{ValueInit};
};

struct Weapon {
    std::string name;
    std::string type;
    Containers::Array<WeaponPart> parts;
    Containers::StaticArray<16, CustomStyle> customStyles{ValueInit};
    bool attached = false;
    std::string damageType;
    bool dualWield = false;
    std::string effectColourMode;
    Color4 effectColour{0.0f};
};

class Mass {
    public:
        enum class State : UnsignedByte {
            Empty, Invalid, Valid
        };

        explicit Mass(const std::string& path);

        Mass(const Mass&) = delete;
        Mass& operator=(const Mass&) = delete;

        Mass(Mass&&) = default;
        Mass& operator=(Mass&&) = default;

        static auto lastError() -> std::string const&;

        static auto getNameFromFile(const std::string& path) -> Containers::Optional<std::string>;

        void refreshValues();

        auto filename() -> std::string const&;

        auto name() -> Containers::Optional<std::string> const&;
        auto setName(std::string new_name) -> bool;

        auto state() -> State;

        auto demo() const -> bool;

        auto dirty() const -> bool;
        void setDirty(bool dirty = true);

        auto jointSliders() -> Joints&;
        void getJointSliders();
        auto writeJointSliders() -> bool;

        auto frameStyles() -> Containers::StaticArrayView<4, Int>;
        void getFrameStyles();
        auto writeFrameStyles() -> bool;

        auto eyeFlareColour() -> Color4&;
        void getEyeFlareColour();
        auto writeEyeFlareColour() -> bool;

        auto frameCustomStyles() -> Containers::StaticArrayView<16, CustomStyle>;
        void getFrameCustomStyles();
        auto writeFrameCustomStyle(UnsignedLong index) -> bool;

        auto armourParts() -> Containers::StaticArrayView<38, ArmourPart>;
        void getArmourParts();
        auto setArmourPart(UnsignedLong index) -> bool;

        auto armourCustomStyles() -> Containers::StaticArrayView<16, CustomStyle>;
        void getArmourCustomStyles();
        auto writeArmourCustomStyle(UnsignedLong index) -> bool;

        auto globalStyles() -> Containers::StaticArrayView<16, CustomStyle>;
        void getGlobalStyles();
        auto writeGlobalStyle(UnsignedLong index) -> bool;

        auto updateSteamId(const std::string& steam_id) -> bool;

    private:
        auto setCustomStyle(const CustomStyle& style, UnsignedLong index, const char* prop_name) -> bool;

        Containers::Optional<UESaveFile> _mass;

        static std::string _lastError;

        std::string _folder;
        std::string _filename;
        State _state = State::Empty;
        bool _demo = false;

        bool _dirty = false;

        Containers::Optional<std::string> _name = Containers::NullOpt;

        struct {
            Joints joints{};

            Containers::StaticArray<4, Int> styles{ValueInit};

            Color4 eyeFlare{0.0f};

            Containers::StaticArray<16, CustomStyle> customStyles;
        } _frame;

        struct {
            Containers::StaticArray<38, ArmourPart> parts;

            Containers::StaticArray<16, CustomStyle> customStyles;
        } _armour;

        struct {
            Containers::StaticArray<8, Weapon> meleeWeapons;
            Containers::StaticArray<1, Weapon> shields;
            Containers::StaticArray<4, Weapon> bulletShooters;
            Containers::StaticArray<4, Weapon> energyShooters;
            Containers::StaticArray<4, Weapon> bulletLaunchers;
            Containers::StaticArray<4, Weapon> energyLaunchers;
        } _weapons;

        Containers::StaticArray<16, CustomStyle> _globalStyles;

        struct {
            Int engineId;
            Containers::StaticArray<7, Int> gearIds;

            Int osId;
            Containers::StaticArray<7, Int> moduleIds;

            Int archId;
            Containers::StaticArray<7, Int> techIds;
        } _tuning;

        std::string _steamId;
};