Implemented floodgate support for ViaProxy

bootstrap/viaproxy/src/main/java/org/geysermc/geyser/platform/viaproxy/GeyserViaProxyBootstrap.java

@@ -43,6 +43,7 @@ import org.jetbrains.annotations.NotNull;
 
 import java.io.File;
 import java.io.IOException;
+import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.UUID;
 
@@ -73,7 +74,7 @@ public class GeyserViaProxyBootstrap implements GeyserBootstrap {
             return;
         }
 
-        config.getRemote().setAuthType(AuthType.OFFLINE);
+        config.getRemote().setAuthType(Files.isRegularFile(this.config.getFloodgateKeyPath()) ? AuthType.FLOODGATE : AuthType.OFFLINE);
         GeyserConfiguration.checkGeyserConfiguration(this.config, this.logger);
 
         this.geyser = GeyserImpl.load(PlatformType.VIAPROXY, this);

core/src/main/java/org/geysermc/geyser/GeyserImpl.java

@@ -308,6 +308,7 @@ public class GeyserImpl implements GeyserApi {
                 }
             }
 
+            if (platformType != PlatformType.VIAPROXY) {
                 boolean floodgatePresent = bootstrap.testFloodgatePluginPresent();
                 if (config.getRemote().authType() == AuthType.FLOODGATE && !floodgatePresent) {
                     logger.severe(GeyserLocale.getLocaleStringLog("geyser.bootstrap.floodgate.not_installed") + " "
@@ -319,6 +320,7 @@ public class GeyserImpl implements GeyserApi {
                     config.getRemote().setAuthType(AuthType.FLOODGATE);
                 }
             }
+        }
 
         String remoteAddress = config.getRemote().address();
         // Filters whether it is not an IP address or localhost, because otherwise it is not possible to find out an SRV entry.