Implement GetBlacklistRecord functionality to retrieve specific blacklist entries

src/FederationServer/Classes/Enums/Method.php

@@ -10,6 +10,7 @@
     use FederationServer\Methods\Audit\ViewAuditEntry;
     use FederationServer\Methods\Blacklist\BlacklistEntity;
     use FederationServer\Methods\Blacklist\DeleteBlacklist;
+    use FederationServer\Methods\Blacklist\GetBlacklistRecord;
     use FederationServer\Methods\Blacklist\LiftBlacklist;
     use FederationServer\Methods\Blacklist\ListBlacklist;
     use FederationServer\Methods\Entities\DeleteEntity;
@@ -204,11 +205,9 @@
                 case self::LIFT_BLACKLIST:
                     LiftBlacklist::handleRequest();
                     break;
-                case self::BLACKLIST_ATTACH_EVIDENCE:
-                    throw new \Exception('To be implemented');
-                    break;
                 case self::GET_BLACKLIST_RECORD:
-                    throw new \Exception('To be implemented');
+                    GetBlacklistRecord::handleRequest();
+                    break;
             }
         }
 

src/FederationServer/Methods/Blacklist/GetBlacklistRecord.php

@@ -0,0 +1,54 @@
+<?php
+
+    namespace FederationServer\Methods\Blacklist;
+
+    use FederationServer\Classes\Configuration;
+    use FederationServer\Classes\Managers\BlacklistManager;
+    use FederationServer\Classes\RequestHandler;
+    use FederationServer\Classes\Validate;
+    use FederationServer\Exceptions\DatabaseOperationException;
+    use FederationServer\Exceptions\RequestException;
+    use FederationServer\FederationServer;
+
+    class GetBlacklistRecord extends RequestHandler
+    {
+        /**
+         * @inheritDoc
+         */
+        public static function handleRequest(): void
+        {
+            $authenticatedOperator = FederationServer::getAuthenticatedOperator();
+            if(!Configuration::getServerConfiguration() ->isBlacklistPublic() && $authenticatedOperator === null)
+            {
+                throw new RequestException('You must be authenticated to view blacklist records', 401);
+            }
+
+            if(!preg_match('#^/blacklist/([a-fA-F0-9\-]{36,})$#', FederationServer::getPath(), $matches))
+            {
+                throw new RequestException('Blacklist UUID required', 405);
+            }
+
+            $blacklistUuid = $matches[1];
+            if(!$blacklistUuid || !Validate::uuid($blacklistUuid))
+            {
+                throw new RequestException('Invalid blacklist UUID', 400);
+            }
+
+            try
+            {
+                if(!BlacklistManager::blacklistExists($blacklistUuid))
+                {
+                    throw new RequestException('Blacklist record not found', 404);
+                }
+
+                $blacklistRecord = BlacklistManager::getBlacklistEntry($blacklistUuid);
+            }
+            catch (DatabaseOperationException $e)
+            {
+                throw new RequestException('Unable to retrieve blacklist records', 500, $e);
+            }
+
+            self::successResponse($blacklistRecord->toArray());
+        }
+    }
+