Add media events (fix #3863)

2 files changed, 48 insertions, 1 deletions

diff --git a/src/main/java/org/traccar/handler/events/BaseEventHandler.java b/src/main/java/org/traccar/handler/events/BaseEventHandler.java
index f7199f6dc..271aaa35d 100644
--- a/src/main/java/org/traccar/handler/events/BaseEventHandler.java
+++ b/src/main/java/org/traccar/handler/events/BaseEventHandler.java
@@ -36,7 +36,7 @@ public abstract class BaseEventHandler extends BaseDataHandler {
     @Override
     protected Position handlePosition(Position position) {
         Map<Event, Position> events = analyzePosition(position);
-        if (events != null) {
+        if (events != null && !events.isEmpty()) {
             notificationManager.updateEvents(events);
         }
         return position;
diff --git a/src/main/java/org/traccar/handler/events/MediaEventHandler.java b/src/main/java/org/traccar/handler/events/MediaEventHandler.java
new file mode 100644
index 000000000..5b9013fad
--- /dev/null
+++ b/src/main/java/org/traccar/handler/events/MediaEventHandler.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2022 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed 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.traccar.handler.events;
+
+import io.netty.channel.ChannelHandler;
+import org.traccar.model.Event;
+import org.traccar.model.Position;
+
+import javax.inject.Inject;
+import java.util.Map;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+@ChannelHandler.Sharable
+public class MediaEventHandler extends BaseEventHandler {
+
+    @Inject
+    public MediaEventHandler() {
+    }
+
+    @Override
+    protected Map<Event, Position> analyzePosition(Position position) {
+        return Stream.of(Position.KEY_IMAGE, Position.KEY_VIDEO, Position.KEY_AUDIO)
+                .filter(position::hasAttribute)
+                .map(type -> {
+                    Event event = new Event(Event.TYPE_MEDIA, position);
+                    event.set("media", type);
+                    event.set("file", position.getString(type));
+                    return event;
+                })
+                .collect(Collectors.toMap(event -> event, event -> position));
+    }
+
+}