package og;

import java.util.ArrayList;

import java.util.List;

/** Card dimensions and code-fitting helpers. */

public final class Layout {

public static final int W = 1200, H = 630;

public static final int PAD = 40;

public static final int HEADER_H = 100;

public static final int FOOTER_H = 56;

public static final int CODE_TOP = HEADER_H;

public static final int CODE_H = H - HEADER_H - FOOTER_H;

public static final int COL_W = (W - PAD * 2 - 20) / 2; // 20px gap between panels

public static final int CODE_PAD = 14;

public static final int LABEL_H = 32;

public static final int USABLE_W = COL_W - CODE_PAD * 2;

public static final int USABLE_H = CODE_H - LABEL_H - CODE_PAD;

public static final double CHAR_WIDTH_RATIO = 0.6;

public static final double LINE_HEIGHT_RATIO = 1.55;

public static final int MIN_CODE_FONT = 9;

public static final int MAX_CODE_FONT = 16;

/** Compute the best font size (MIN–MAX) that fits both code blocks. */

public static int bestFontSize(List<String> oldLines, List<String> modernLines) {

int maxChars = Math.max(

oldLines.stream().mapToInt(String::length).max().orElse(1),

modernLines.stream().mapToInt(String::length).max().orElse(1)

);

int maxLines = Math.max(oldLines.size(), modernLines.size());

int byWidth = (int) (USABLE_W / (maxChars * CHAR_WIDTH_RATIO));

int byHeight = (int) (USABLE_H / (maxLines * LINE_HEIGHT_RATIO));

return Math.max(MIN_CODE_FONT, Math.min(MAX_CODE_FONT, Math.min(byWidth, byHeight)));

}

/** Truncate lines to fit the panel height at the given font size. */

public static List<String> fitLines(List<String> lines, int fontSize) {

int lineH = (int) (fontSize * LINE_HEIGHT_RATIO);

int maxLines = USABLE_H / lineH;

if (lines.size() <= maxLines) return lines;

var truncated = new ArrayList<>(lines.subList(0, maxLines - 1));

truncated.add("...");

return truncated;

}

private Layout() {}

}