98 lines
2.9 KiB
PHP
98 lines
2.9 KiB
PHP
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<?php
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namespace Drupal\riverside_pt\Controller;
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use Drupal\Core\Controller\ControllerBase;
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class PaletteController extends ControllerBase {
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public function page(): array {
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$colors = $this->parseColors();
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if (!$colors) {
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return ['#markup' => '<p>Could not parse tailwind.config.js</p>'];
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}
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$html = '<div style="font-family:monospace;font-size:13px;padding:32px;background:#f5f5f5;max-width:480px">';
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foreach ($colors as $group => $shades) {
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$html .= '<div style="font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:#666;margin:20px 0 8px">'
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. htmlspecialchars($group) . '</div>';
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foreach ($shades as $shade => $hex) {
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$label = $shade === 'DEFAULT' ? $group : "$group-$shade";
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$lum = $this->luminance($hex);
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$textColor = $lum > 140 ? '#333' : '#fff';
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$border = $lum > 200 ? 'border:1px solid #ccc;' : '';
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$html .= '<div style="display:flex;align-items:center;gap:12px;margin-bottom:6px">'
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. "<div style=\"width:80px;height:40px;background:{$hex};{$border}\"></div>"
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. "<span style=\"background:{$hex};color:{$textColor};padding:2px 8px\">"
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. htmlspecialchars("$label — $hex")
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. '</span></div>';
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}
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}
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$html .= '</div>';
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return ['#markup' => $html];
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}
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private function parseColors(): array {
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$path = dirname(DRUPAL_ROOT) . '/tailwind.config.js';
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if (!file_exists($path)) {
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return [];
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}
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$content = file_get_contents($path);
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// Find the opening of the colors: { block
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if (!preg_match('/colors\s*:\s*\{/', $content, $m, PREG_OFFSET_CAPTURE)) {
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return [];
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}
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$start = $m[0][1] + strlen($m[0][0]);
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// Walk forward counting braces to find the closing }
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$depth = 1;
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$i = $start;
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$len = strlen($content);
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while ($i < $len && $depth > 0) {
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if ($content[$i] === '{') $depth++;
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elseif ($content[$i] === '}') $depth--;
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$i++;
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}
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$block = substr($content, $start, $i - $start - 1);
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$colors = [];
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// 'group': { shade: '#hex', ... }
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preg_match_all("/'([^']+)'\s*:\s*\{([^}]+)\}/", $block, $groups, PREG_SET_ORDER);
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foreach ($groups as $group) {
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$name = $group[1];
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preg_match_all('/(\w+)\s*:\s*\'(#[0-9a-fA-F]{3,6})\'/', $group[2], $shades, PREG_SET_ORDER);
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foreach ($shades as $shade) {
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$colors[$name][$shade[1]] = $shade[2];
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}
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}
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// 'group': '#hex' (flat single-value entry)
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preg_match_all("/'([^']+)'\s*:\s*'(#[0-9a-fA-F]{3,6})'/", $block, $singles, PREG_SET_ORDER);
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foreach ($singles as $single) {
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if (!isset($colors[$single[1]])) {
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$colors[$single[1]]['DEFAULT'] = $single[2];
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}
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}
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return $colors;
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}
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private function luminance(string $hex): int {
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$hex = ltrim($hex, '#');
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return (int) (
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0.299 * hexdec(substr($hex, 0, 2)) +
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0.587 * hexdec(substr($hex, 2, 2)) +
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0.114 * hexdec(substr($hex, 4, 2))
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);
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}
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}
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