// 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 "PropertyNames.h"
#include "../Logger/Logger.h"
#include "../UESaveFile/Types/ArrayProperty.h"
#include "../UESaveFile/Types/ColourStructProperty.h"
#include "../UESaveFile/Types/FloatProperty.h"
#include "../UESaveFile/Types/GenericStructProperty.h"
#include "../UESaveFile/Types/IntProperty.h"
#include "../UESaveFile/Types/StringProperty.h"

#include "Mass.h"

using namespace Containers::Literals;

auto Mass::globalStyles() -> Containers::ArrayView<CustomStyle> {
    return _globalStyles;
}

void Mass::getGlobalStyles() {
    LOG_INFO("Getting global styles.");

    auto unit_data = _mass->at<GenericStructProperty>(MASS_UNIT_DATA);
    if(!unit_data) {
        LOG_ERROR_FORMAT("Couldn't find {} in {}.", MASS_UNIT_DATA, _filename);
        _state = State::Invalid;
        return;
    }

    auto global_styles = unit_data->at<ArrayProperty>(MASS_GLOBAL_STYLES);
    if(!global_styles) {
        LOG_WARNING_FORMAT("Couldn't find global styles in {}.", _filename);
        _globalStyles = Containers::Array<CustomStyle>{0};
        return;
    }

    if(global_styles->items.size() != _globalStyles.size()) {
        _globalStyles = Containers::Array<CustomStyle>{global_styles->items.size()};
    }

    getCustomStyles(_globalStyles, global_styles);
}

auto Mass::writeGlobalStyle(UnsignedLong index) -> bool {
    LOG_INFO_FORMAT("Writing global style number {}.", index);

    if(index > _globalStyles.size()) {
        _lastError = "Global style index out of range"_s;
        LOG_ERROR(_lastError);
        return false;
    }

    auto unit_data = _mass->at<GenericStructProperty>(MASS_UNIT_DATA);
    if(!unit_data) {
        _lastError = "No unit data found in "_s + _filename;
        LOG_ERROR(_lastError);
        _state = State::Invalid;
        return false;
    }

    auto global_styles = unit_data->at<ArrayProperty>(MASS_GLOBAL_STYLES);
    if(!global_styles) {
        _lastError = "No global styles found in "_s + _filename;
        LOG_ERROR(_lastError);
        _state = State::Invalid;
        return false;
    }

    return writeCustomStyle(_globalStyles[index], index, global_styles);
}

void Mass::getCustomStyles(Containers::ArrayView<CustomStyle> styles, ArrayProperty* style_array) {
    for(UnsignedInt i = 0; i < style_array->items.size(); i++) {
        auto style_prop = style_array->at<GenericStructProperty>(i);
        auto& style = styles[i];

        style.name = style_prop->at<StringProperty>(MASS_STYLE_NAME)->value;
        auto colour_prop = style_prop->at<ColourStructProperty>(MASS_STYLE_COLOUR);
        style.colour = Color4{colour_prop->r, colour_prop->g, colour_prop->b, colour_prop->a};
        style.metallic = style_prop->at<FloatProperty>(MASS_STYLE_METALLIC)->value;
        style.gloss = style_prop->at<FloatProperty>(MASS_STYLE_GLOSS)->value;
        style.glow = colour_prop->a != 0.0f;

        style.patternId = style_prop->at<IntProperty>(MASS_STYLE_PATTERN_ID)->value;
        style.opacity = style_prop->at<FloatProperty>(MASS_STYLE_PATTERN_OPACITY)->value;
        style.offset = Vector2{
            style_prop->at<FloatProperty>(MASS_STYLE_PATTERN_OFFSETX)->value,
            style_prop->at<FloatProperty>(MASS_STYLE_PATTERN_OFFSETY)->value
        };
        style.rotation = style_prop->at<FloatProperty>(MASS_STYLE_PATTERN_ROTATION)->value;
        style.scale = style_prop->at<FloatProperty>(MASS_STYLE_PATTERN_SCALE)->value;
    }
}

auto Mass::writeCustomStyle(const CustomStyle& style, UnsignedLong index, ArrayProperty* style_array) -> bool {
    if(!style_array) {
        _lastError = "style_array is null."_s;
        LOG_ERROR(_lastError);
        return false;
    }

    auto style_prop = style_array->at<GenericStructProperty>(index);
    if(!style_prop) {
        _lastError = "Style index is out of range in "_s + _filename;
        LOG_ERROR(_lastError);
        return false;
    }

    style_prop->at<StringProperty>(MASS_STYLE_NAME)->value = style.name;
    auto colour_prop = style_prop->at<ColourStructProperty>(MASS_STYLE_COLOUR);
    colour_prop->r = style.colour.r();
    colour_prop->g = style.colour.g();
    colour_prop->b = style.colour.b();
    colour_prop->a = style.glow ? 1.0f : 0.0f;
    style_prop->at<FloatProperty>(MASS_STYLE_METALLIC)->value = style.metallic;
    style_prop->at<FloatProperty>(MASS_STYLE_GLOSS)->value = style.gloss;

    style_prop->at<IntProperty>(MASS_STYLE_PATTERN_ID)->value = style.patternId;
    style_prop->at<FloatProperty>(MASS_STYLE_PATTERN_OPACITY)->value = style.opacity;
    style_prop->at<FloatProperty>(MASS_STYLE_PATTERN_OFFSETX)->value = style.offset.x();
    style_prop->at<FloatProperty>(MASS_STYLE_PATTERN_OFFSETY)->value = style.offset.y();
    style_prop->at<FloatProperty>(MASS_STYLE_PATTERN_ROTATION)->value = style.rotation;
    style_prop->at<FloatProperty>(MASS_STYLE_PATTERN_SCALE)->value = style.scale;

    if(!_mass->saveToFile()) {
        _lastError = _mass->lastError();
        return false;
    }

    return true;
}