move exception to its own package

commafeed-server/src/main/java/com/commafeed/frontend/exception/CommaFeedApplicationException.java

@@ -0,0 +1,20 @@
+package com.commafeed.frontend.exception;
+
+import java.io.Serial;
+import java.util.Objects;
+
+public class CommaFeedApplicationException extends RuntimeException {
+
+    @Serial private static final long serialVersionUID = 1L;
+
+    private final CommaFeedExceptionType type;
+
+    public CommaFeedApplicationException(CommaFeedExceptionType type) {
+        super(Objects.requireNonNull(type).message());
+        this.type = type;
+    }
+
+    public CommaFeedExceptionType type() {
+        return type;
+    }
+}

commafeed-server/src/main/java/com/commafeed/frontend/exception/CommaFeedExceptionType.java

@@ -0,0 +1,23 @@
+package com.commafeed.frontend.exception;
+
+import org.jboss.resteasy.reactive.RestResponse.Status;
+
+public enum CommaFeedExceptionType {
+    WRONG_USERNAME_OR_PASSWORD(Status.UNAUTHORIZED, "wrong username or password");
+
+    private final Status status;
+    private final String message;
+
+    CommaFeedExceptionType(Status status, String message) {
+        this.status = status;
+        this.message = message;
+    }
+
+    public Status status() {
+        return status;
+    }
+
+    public String message() {
+        return message;
+    }
+}