Change text from registration to "naming" and prefill device name

src/main/java/org/cryptomator/ui/keyloading/hub/RegisterDeviceController.java

@@ -25,6 +25,9 @@ import javafx.scene.Scene;
 import javafx.scene.control.TextField;
 import javafx.stage.Stage;
 import javafx.stage.WindowEvent;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
 import java.net.URI;
 import java.net.http.HttpClient;
 import java.net.http.HttpRequest;
@@ -33,6 +36,7 @@ import java.nio.charset.StandardCharsets;
 import java.util.Objects;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutorService;
+import java.util.concurrent.ThreadLocalRandom;
 import java.util.concurrent.atomic.AtomicReference;
 
 @KeyLoadingScoped
@@ -69,6 +73,18 @@ public class RegisterDeviceController implements FxController {
 		this.httpClient = HttpClient.newBuilder().executor(executor).build();
 	}
 
+	public void initialize() {
+		deviceNameField.setText(System.getProperty("user.name") + "-" + determineHostname());
+	}
+
+	private String determineHostname() {
+		try {
+			return new BufferedReader(new InputStreamReader(Runtime.getRuntime().exec("hostname").getInputStream())).readLine();
+		} catch (IOException e) {
+			return String.valueOf(ThreadLocalRandom.current().nextInt());
+		}
+	}
+
 	@FXML
 	public void register() {
 		var keyUri = URI.create(hubConfig.devicesResourceUrl + deviceId);
@@ -84,7 +100,7 @@ public class RegisterDeviceController implements FxController {
 				.build();
 		httpClient.sendAsync(request, HttpResponse.BodyHandlers.discarding()) //
 				.handleAsync((response, throwable) -> {
-					if( response != null) {
+					if (response != null) {
 						this.registrationSucceeded(response);
 					} else {
 						this.registrationFailed(throwable);

src/main/resources/i18n/strings.properties

@@ -133,16 +133,16 @@ hub.auth.loginLink=Not redirected? Click here to open it.
 hub.receive.message=Processing response…
 hub.receive.description=Cryptomator is receiving and processing the response from Hub. Please wait.
 ### Register Device
-hub.register.message=Register device?
-hub.register.description=This seems to be the first access from this device to Cryptomator Hub. In order to unlock any vault, you need to choose a name and register it.
+hub.register.message=Device name required
+hub.register.description=This seems to be the first Hub access from this device. In order to identify it for access authorization, you need to name this device.
 hub.register.nameLabel=Device Name
-hub.register.registerBtn=Register
+hub.register.registerBtn=Confirm
 ### Registration Success
-hub.registerSuccess.message=Device registered
+hub.registerSuccess.message=Device named
 hub.registerSuccess.description=To access the vault, your device needs to be authorized by the vault owner.
 ### Registration Failed
-hub.registerFailed.message=Device registration failed
-hub.registerFailed.description=An error was thrown in the registration process. For more details, look into the application log.
+hub.registerFailed.message=Device naming failed
+hub.registerFailed.description=An error was thrown in the naming process. For more details, look into the application log.
 ### Unauthorized
 hub.unauthorized.message=Access denied
 hub.unauthorized.description=Your device has not yet been authorized to access this vault. Ask the vault owner to authorize it.