feat(gyms): per-gym brand colour; CrossFit pill follows it

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

config/functions_gyms.php

@@ -41,7 +41,7 @@ function gym_defaults(): array {
         'slug' => '', 'name' => '', 'locality' => '', 'postal_code' => '', 'is_published' => 0,
         'is_default' => 0, 'sections' => null, 'hero_title' => '', 'hero_subtitle' => '',
         'hero_image' => '', 'seo_title' => '', 'seo_description' => '', 'gallery_id' => null,
-        'google_place_id' => '', 'has_crossfit' => 0, 'item_order' => 0,
+        'google_place_id' => '', 'has_crossfit' => 0, 'brand_color' => '', 'item_order' => 0,
     ];
 }
 
@@ -103,6 +103,19 @@ function gym_section_on(array $gym, string $key): bool {
     return !is_array($list) || in_array($key, $list, true);
 }
 
+// Brand colour of a gym as :root overrides for the public site. Derives the
+// hover shade, the text-on-light ink and the text colour that stays readable on
+// the colour (dark on light brands, white on dark ones). '' = stylesheet default.
+function gym_brand_css(array $gym): string {
+    $hex = strtoupper((string) ($gym['brand_color'] ?? ''));
+    if (!preg_match('/^#[0-9A-F]{6}$/', $hex)) return '';
+    [$r, $g, $b] = [hexdec(substr($hex, 1, 2)), hexdec(substr($hex, 3, 2)), hexdec(substr($hex, 5, 2))];
+    $shade = fn(float $k) => sprintf('#%02X%02X%02X', (int) round($r * $k), (int) round($g * $k), (int) round($b * $k));
+    $lum = (0.2126 * $r + 0.7152 * $g + 0.0722 * $b) / 255;
+    return ':root{--fitme-accent:' . $hex . ';--fitme-accent-rgb:' . "$r, $g, $b" . ';--fitme-accent-dark:' . $shade(.86)
+         . ';--fitme-accent-ink:' . $shade($lum > .5 ? .5 : .85) . ';--fitme-on-accent:' . ($lum > .5 ? '#0B0B0D' : '#FFFFFF') . '}';
+}
+
 function gym_url(array $gym, string $path = ''): string {
     return base_url(rawurlencode((string) $gym['slug']) . '/' . ltrim($path, '/'));
 }
@@ -159,6 +172,7 @@ function gyms_from_post(PDO $pdo, array $post, array &$errors, ?int $id = null):
         'gallery_id'      => (int) ($post['gallery_id'] ?? 0) ?: null,
         'google_place_id' => mb_substr(trim((string) ($post['google_place_id'] ?? '')), 0, 120),
         'has_crossfit'    => !empty($post['has_crossfit']) ? 1 : 0,
+        'brand_color'     => strtoupper(trim((string) ($post['brand_color'] ?? ''))),
         'item_order'      => (int) ($post['item_order'] ?? 0),
     ];
     $on = array_values(array_intersect(array_keys(gym_sections()), (array) ($post['sections'] ?? [])));
@@ -173,6 +187,9 @@ function gyms_from_post(PDO $pdo, array $post, array &$errors, ?int $id = null):
         $other = db_gyms_by_slug($pdo, $slug);
         if ($other && (int) $other['id'] !== (int) $id) $errors[] = 'Já existe um ginásio com essa pasta da URL.';
     }
+    if ($data['brand_color'] !== '' && !preg_match('/^#[0-9A-F]{6}$/', $data['brand_color'])) {
+        $errors[] = 'Cor da marca: formato #RRGGBB (ex.: #C2D500).';
+    }
     if ($data['is_default'] && !$data['is_published']) $errors[] = 'O ginásio principal tem de estar publicado.';
     if ($data['hero_image'] !== '' && !preg_match('~^(site/assets/img|uploads)/[A-Za-z0-9_./ -]+\.(jpe?g|png|webp)$~i', $data['hero_image'])) {
         $errors[] = 'Imagem do header: caminho de uma imagem do site (ex.: site/assets/img/home.jpg).';
@@ -183,15 +200,15 @@ function gyms_from_post(PDO $pdo, array $post, array &$errors, ?int $id = null):
 function _gyms_params(array $d): array {
     return [$d['slug'], $d['name'], $d['locality'], $d['postal_code'], $d['is_published'], $d['is_default'],
             $d['sections'], $d['hero_title'], $d['hero_subtitle'], $d['hero_image'], $d['seo_title'],
-            $d['seo_description'], $d['gallery_id'], $d['google_place_id'], $d['has_crossfit'], $d['item_order']];
+            $d['seo_description'], $d['gallery_id'], $d['google_place_id'], $d['has_crossfit'], $d['brand_color'], $d['item_order']];
 }
 
 function db_gyms_create(PDO $pdo, array $d): int {
     $pdo->beginTransaction();
     $pdo->prepare("INSERT INTO gyms (slug, name, locality, postal_code, is_published, is_default, sections,
                        hero_title, hero_subtitle, hero_image, seo_title, seo_description, gallery_id,
-                       google_place_id, has_crossfit, item_order, created_at, updated_at)
-                   VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?, NOW(), NOW())")->execute(_gyms_params($d));
+                       google_place_id, has_crossfit, brand_color, item_order, created_at, updated_at)
+                   VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?, NOW(), NOW())")->execute(_gyms_params($d));
     $id = (int) $pdo->lastInsertId();
     if ($d['is_default']) $pdo->prepare("UPDATE gyms SET is_default = 0 WHERE id <> ?")->execute([$id]);
     // Its own contacts row (id = gym id), starting from the gym's name.
@@ -211,7 +228,7 @@ function db_gyms_update(PDO $pdo, int $id, array $d): bool {
     $st = $pdo->prepare("UPDATE gyms SET slug = ?, name = ?, locality = ?, postal_code = ?, is_published = ?,
                              is_default = ?, sections = ?, hero_title = ?, hero_subtitle = ?, hero_image = ?,
                              seo_title = ?, seo_description = ?, gallery_id = ?, google_place_id = ?,
-                             has_crossfit = ?, item_order = ?, updated_at = NOW()
+                             has_crossfit = ?, brand_color = ?, item_order = ?, updated_at = NOW()
                          WHERE id = ?");
     $st->execute($params);
     $changed = $st->rowCount() > 0;