Move post events into api modules

Signed-off-by: JohnNiang <[email protected]>

api/src/main/java/run/halo/app/event/post/PostDeletedEvent.java

@@ -0,0 +1,22 @@
+package run.halo.app.event.post;
+
+import run.halo.app.core.extension.content.Post;
+
+public class PostDeletedEvent extends PostEvent {
+
+    private final Post post;
+
+    public PostDeletedEvent(Object source, Post post) {
+        super(source, post.getMetadata().getName());
+        this.post = post;
+    }
+
+    /**
+     * Get original post.
+     *
+     * @return original post.
+     */
+    public Post getPost() {
+        return post;
+    }
+}

api/src/main/java/run/halo/app/event/post/PostEvent.java

@@ -0,0 +1,27 @@
+package run.halo.app.event.post;
+
+import org.springframework.context.ApplicationEvent;
+
+/**
+ * An abstract class for post events.
+ *
+ * @author johnniang
+ */
+public abstract class PostEvent extends ApplicationEvent {
+
+    private final String name;
+
+    public PostEvent(Object source, String name) {
+        super(source);
+        this.name = name;
+    }
+
+    /**
+     * Gets post metadata name.
+     *
+     * @return post metadata name
+     */
+    public String getName() {
+        return name;
+    }
+}

api/src/main/java/run/halo/app/event/post/PostPublishedEvent.java

@@ -0,0 +1,12 @@
+package run.halo.app.event.post;
+
+import run.halo.app.plugin.SharedEvent;
+
+@SharedEvent
+public class PostPublishedEvent extends PostEvent {
+
+    public PostPublishedEvent(Object source, String postName) {
+        super(source, postName);
+    }
+
+}

api/src/main/java/run/halo/app/event/post/PostUnpublishedEvent.java

@@ -0,0 +1,9 @@
+package run.halo.app.event.post;
+
+public class PostUnpublishedEvent extends PostEvent {
+
+    public PostUnpublishedEvent(Object source, String postName) {
+        super(source, postName);
+    }
+
+}

api/src/main/java/run/halo/app/event/post/PostUpdatedEvent.java

@@ -0,0 +1,9 @@
+package run.halo.app.event.post;
+
+public class PostUpdatedEvent extends PostEvent {
+
+    public PostUpdatedEvent(Object source, String postName) {
+        super(source, postName);
+    }
+
+}

api/src/main/java/run/halo/app/event/post/PostVisibleChangedEvent.java

@@ -0,0 +1,22 @@
+package run.halo.app.event.post;
+
+import lombok.Getter;
+import org.springframework.lang.Nullable;
+import run.halo.app.core.extension.content.Post;
+
+@Getter
+public class PostVisibleChangedEvent extends PostEvent {
+
+    @Nullable
+    private final Post.VisibleEnum oldVisible;
+
+    private final Post.VisibleEnum newVisible;
+
+    public PostVisibleChangedEvent(Object source, String postName,
+        Post.VisibleEnum oldVisible, Post.VisibleEnum newVisible) {
+        super(source, postName);
+        this.oldVisible = oldVisible;
+        this.newVisible = newVisible;
+    }
+
+}

application/src/main/java/run/halo/app/plugin/SharedEvent.java → api/src/main/java/run/halo/app/plugin/SharedEvent.java

@@ -10,7 +10,7 @@
  * <p>It is a symbolic annotation.</p>
  * <p>When the event marked with {@link SharedEvent} annotation is published, it will be
  * broadcast to the application context of the plugin by
- * {@link PluginApplicationEventBridgeDispatcher}.</p>
+ * {@link SharedEventListenerRegistry}.</p>
  *
  * @author guqing
  * @since 2.0.0

application/src/main/java/run/halo/app/core/extension/reconciler/PostReconciler.java

@@ -15,6 +15,7 @@
 import java.time.Duration;
 import java.time.Instant;
 import java.util.HashSet;
+import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Objects;
 import java.util.Optional;
@@ -88,7 +89,7 @@ public class PostReconciler implements Reconciler<Reconciler.Request> {
 
     @Override
     public Result reconcile(Request request) {
-        var events = new HashSet<ApplicationEvent>();
+        var events = new LinkedHashSet<ApplicationEvent>();
         client.fetch(Post.class, request.name())
             .ifPresent(post -> {
                 if (ExtensionOperator.isDeleted(post)) {
@@ -104,7 +105,7 @@ public Result reconcile(Request request) {
                 }
                 addFinalizers(post.getMetadata(), Set.of(FINALIZER_NAME));
 
-                populateLabels(post);
+                populateLabels(post, events);
 
                 schedulePublishIfNecessary(post);
 
@@ -195,16 +196,15 @@ public Result reconcile(Request request) {
         return Result.doNotRetry();
     }
 
-    private void populateLabels(Post post) {
+    private void populateLabels(Post post, Set<ApplicationEvent> events) {
         var labels = nullSafeLabels(post);
         labels.put(Post.DELETED_LABEL, String.valueOf(isTrue(post.getSpec().getDeleted())));
 
         var expectVisible = defaultIfNull(post.getSpec().getVisible(), VisibleEnum.PUBLIC);
         var oldVisible = VisibleEnum.from(labels.get(Post.VISIBLE_LABEL));
         if (!Objects.equals(oldVisible, expectVisible)) {
             var postName = post.getMetadata().getName();
-            eventPublisher.publishEvent(
-                new PostVisibleChangedEvent(postName, oldVisible, expectVisible));
+            events.add(new PostVisibleChangedEvent(this, postName, oldVisible, expectVisible));
         }
         labels.put(Post.VISIBLE_LABEL, expectVisible.toString());