Revert "Remove unused/inactive purge prefixes command"

This reverts commit a72da44.

Author: timkelty

src/HeaderEnum.php

@@ -6,6 +6,7 @@ enum HeaderEnum: string
 {
     case CACHE_TAG = 'Cache-Tag';
     case CACHE_PURGE_TAG = 'Cache-Purge-Tag';
+    case CACHE_PURGE_PREFIX = 'Cache-Purge-Prefix';
     case CACHE_CONTROL = 'Cache-Control';
     case CDN_CACHE_CONTROL = 'CDN-Cache-Control';
     case SURROGATE_CONTROL = 'Surrogate-Control';

src/StaticCache.php

@@ -292,6 +292,24 @@ public function purgeTags(string|StaticCacheTag ...$tags): void
         ]);
     }
 
+    public function purgeUrlPrefixes(string ...$urlPrefixes): void
+    {
+        $urlPrefixes = Collection::make($urlPrefixes)->filter()->unique();
+
+        if ($urlPrefixes->isEmpty()) {
+            return;
+        }
+
+        Craft::info(new PsrMessage('Purging URL prefixes', [
+            'urlPrefixes' => $urlPrefixes->all(),
+        ]), __METHOD__);
+
+        // TODO: make sure we don't go over max header size
+        Helper::makeGatewayApiRequest([
+            HeaderEnum::CACHE_PURGE_PREFIX->value => $urlPrefixes->implode(','),
+        ]);
+    }
+
     private function isCacheable(): bool
     {
         $response = Craft::$app->getResponse();

src/cli/controllers/StaticCacheController.php

@@ -8,6 +8,15 @@
 
 class StaticCacheController extends Controller
 {
+    public function actionPurgePrefixes(string ...$prefixes): int
+    {
+        $this->do('Purging prefixes', function() use ($prefixes) {
+            Module::getInstance()->getStaticCache()->purgeUrlPrefixes(...$prefixes);
+        });
+
+        return ExitCode::OK;
+    }
+
     public function actionPurgeTags(string ...$tags): int
     {
         $this->do('Purging tags', function() use ($tags) {