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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2024 Apryse Group NV
    Authors: Apryse Software.

    This program is offered under a commercial and under the AGPL license.
    For commercial licensing, contact us at https://itextpdf.com/sales.  For AGPL licensing, see below.

    AGPL licensing:
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero 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 Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see .
 */
package com.itextpdf.layout.renderer;

import com.itextpdf.layout.borders.Border;
import com.itextpdf.layout.properties.ContinuousContainer;
import com.itextpdf.layout.properties.Property;
import com.itextpdf.layout.properties.UnitValue;

import java.util.List;

/**
 * The class stores common logic for multicol and grid layout.
 */
final class GridMulticolUtil {
    private GridMulticolUtil() {
        // do nothing
    }

    /**
     * Creates a split renderer.
     *
     * @param children children of the split renderer
     * @param renderer parent renderer
     *
     * @return a new {@link AbstractRenderer} instance
     */
    static AbstractRenderer createSplitRenderer(List children, AbstractRenderer renderer) {
        AbstractRenderer splitRenderer = (AbstractRenderer) renderer.getNextRenderer();
        splitRenderer.parent = renderer.parent;
        splitRenderer.modelElement = renderer.modelElement;
        splitRenderer.occupiedArea = renderer.occupiedArea;
        splitRenderer.isLastRendererForModelElement = false;
        splitRenderer.setChildRenderers(children);
        splitRenderer.addAllProperties(renderer.getOwnProperties());
        ContinuousContainer.setupContinuousContainerIfNeeded(splitRenderer);
        return splitRenderer;
    }

    static float updateOccupiedWidth(float initialWidth, AbstractRenderer renderer) {
        float result = initialWidth;
        result += safelyRetrieveFloatProperty(Property.PADDING_LEFT, renderer);
        result += safelyRetrieveFloatProperty(Property.PADDING_RIGHT, renderer);

        result += safelyRetrieveFloatProperty(Property.MARGIN_LEFT, renderer);
        result += safelyRetrieveFloatProperty(Property.MARGIN_RIGHT, renderer);

        if (!renderer.hasOwnProperty(Property.BORDER) || renderer.getProperty(Property.BORDER) == null) {
            result += safelyRetrieveFloatProperty(Property.BORDER_LEFT, renderer);
        }
        if (!renderer.hasOwnProperty(Property.BORDER) || renderer.getProperty(Property.BORDER) == null) {
            result += safelyRetrieveFloatProperty(Property.BORDER_RIGHT, renderer);
        }
        result += safelyRetrieveFloatProperty(Property.BORDER, renderer) * 2;

        return result;
    }

    static float updateOccupiedHeight(float initialHeight, boolean isFull, boolean isFirstLayout,
            AbstractRenderer renderer) {

        float result = initialHeight;
        if (isFull) {
            result += safelyRetrieveFloatProperty(Property.PADDING_BOTTOM, renderer);
            result += safelyRetrieveFloatProperty(Property.MARGIN_BOTTOM, renderer);
            if (!renderer.hasOwnProperty(Property.BORDER) || renderer.getProperty(Property.BORDER) == null) {
                result += safelyRetrieveFloatProperty(Property.BORDER_BOTTOM, renderer);
            }
        }
        result += safelyRetrieveFloatProperty(Property.PADDING_TOP, renderer);

        result += safelyRetrieveFloatProperty(Property.MARGIN_TOP, renderer);

        if (!renderer.hasOwnProperty(Property.BORDER) || renderer.getProperty(Property.BORDER) == null) {
            result += safelyRetrieveFloatProperty(Property.BORDER_TOP, renderer);
        }

        // isFirstLayout is necessary to handle the case when multicol container layouted in more
        // than 2 pages, and on the last page layout result is full, but there is no bottom border
        float TOP_AND_BOTTOM = isFull && isFirstLayout ? 2 : 1;
        // Multicol container layouted in more than 3 pages, and there is a page where there are no bottom and top borders
        if (!isFull && !isFirstLayout) {
            TOP_AND_BOTTOM = 0;
        }
        result += safelyRetrieveFloatProperty(Property.BORDER, renderer) * TOP_AND_BOTTOM;
        return result;
    }

    private static float safelyRetrieveFloatProperty(int property, AbstractRenderer renderer) {
        final Object value = renderer.