content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.camel.karavan.api;
  
  import io.smallrye.mutiny.Multi;
  import io.vertx.core.json.JsonObject;
  import io.vertx.mutiny.core.eventbus.EventBus;
  import jakarta.inject.Inject;
  import jakarta.ws.rs.GET;
  import jakarta.ws.rs.Path;
  import jakarta.ws.rs.PathParam;
  import jakarta.ws.rs.Produces;
  import jakarta.ws.rs.core.Context;
  import jakarta.ws.rs.core.MediaType;
  import jakarta.ws.rs.sse.OutboundSseEvent;
  import jakarta.ws.rs.sse.Sse;
  import jakarta.ws.rs.sse.SseEventSink;
  import org.apache.camel.karavan.service.NotificationService;
  import org.jboss.resteasy.reactive.RestStreamElementType;
  
  import static org.apache.camel.karavan.listener.NotificationListener.*;
  
  @Path("/ui/notification")
  public class NotificationResource {
  
      private static final String SERVICE_NAME_SYSTEM = "NOTIFICATION_SYSTEM";
      private static final String SERVICE_NAME_USER = "NOTIFICATION_USER";
  
      @Inject
      EventBus eventBus;
  
      @Inject
      NotificationService notificationService;
  
      @GET
      @Path("/system/{username}")
      @Produces(MediaType.SERVER_SENT_EVENTS)
      @RestStreamElementType(MediaType.TEXT_PLAIN)
      public Multi<OutboundSseEvent> karavanStream(
              @PathParam("username") String username,
              @Context SseEventSink eventSink,
              @Context Sse sse
      ) {
          notificationService.sinkCleanup(SERVICE_NAME_SYSTEM, username, eventSink);
          return eventBus.<JsonObject>consumer(NOTIFICATION_ADDRESS_SYSTEM).toMulti()
                  .map(m -> sse.newEventBuilder()
                          .id(m.headers().get(NOTIFICATION_HEADER_EVENT_ID))
                          .name(m.headers().get(NOTIFICATION_HEADER_EVENT_NAME) + ":" + m.headers().get(NOTIFICATION_HEADER_CLASS_NAME))
                          .data(m.body())
                          .build());
      }
  
      @GET
      @Path("/user/{username}")
      @Produces(MediaType.SERVER_SENT_EVENTS)
      @RestStreamElementType(MediaType.TEXT_PLAIN)
      public Multi<OutboundSseEvent> userStream(
              @PathParam("username") String username,
              @Context SseEventSink eventSink,
              @Context Sse sse
      ) {
          notificationService.sinkCleanup(SERVICE_NAME_USER, username, eventSink);
          return eventBus.<JsonObject>consumer(username).toMulti()
                  .map(m -> sse.newEventBuilder()
                          .id(m.headers().get(NOTIFICATION_HEADER_EVENT_ID))
                          .name(m.headers().get(NOTIFICATION_HEADER_EVENT_NAME) + ":" + m.headers().get(NOTIFICATION_HEADER_CLASS_NAME))
                          .data(m.body())
                          .build());
      }
  }