Add ability to get the cache key for a given setting key

src/Facades/Settings.php

@@ -28,6 +28,7 @@
  * @method static self disableTeams()
  * @method static bool teamsAreEnabled()
  * @method static \Rawilk\Settings\Contracts\KeyGenerator getKeyGenerator()
+ * @method static string cacheKeyForSetting(string $key)
  */
 class Settings extends Facade
 {

src/Settings.php

@@ -396,6 +396,27 @@ public function getKeyGenerator(): KeyGenerator
         return $this->keyGenerator;
     }
 
+    /**
+     * Generate the key to use for caching a specific setting.
+     * This is meant for external usage.
+     */
+    public function cacheKeyForSetting(string $key): string
+    {
+        $storageKey = $this->getKeyForStorage(
+            $this->normalizeKey($key),
+        );
+
+        $cacheKey = $this->getCacheKey($storageKey);
+
+        if ($this->resetContext) {
+            $this->context();
+        }
+
+        $this->resetContext = true;
+
+        return $cacheKey;
+    }
+
     protected function normalizeKey(string $key): string
     {
         if (Str::startsWith(haystack: $key, needles: 'file_')) {

tests/Feature/SettingsTest.php

@@ -485,6 +485,20 @@
     Event::assertDispatchedTimes(SettingWasStored::class, 1);
 });
 
+it('can generate the cache key for a given setting', function () {
+    $settings = settings();
+    $settings->useCacheKeyPrefix('settings.');
+    (fn () => $this->keyGenerator = (new ReadableKeyGenerator)->setContextSerializer(new DotNotationContextSerializer))->call($settings);
+
+    expect(SettingsFacade::cacheKeyForSetting('foo'))->toBe('settings.foo')
+        ->and(SettingsFacade::context(new Context(['foo' => 'bar']))->cacheKeyForSetting('foo'))->toBe('settings.foo:c:::foo:bar');
+
+    SettingsFacade::enableTeams();
+    SettingsFacade::setTeamId(1);
+
+    expect(SettingsFacade::cacheKeyForSetting('foo'))->toBe('settings.foo::team:1');
+});
+
 // Helpers...
 
 function assertQueryCount(int $expected): void