[release-2.17] Fix the problem that plugins without jar file may not be deleted (#6374)

This is an automated cherry-pick of #6334

/assign JohnNiang

```release-note
修复在没有插件文件的情况下可能无法删除插件的问题
```

application/src/main/java/run/halo/app/plugin/HaloPluginManager.java

@@ -25,6 +25,7 @@ import org.pf4j.PluginStateEvent;
 import org.pf4j.PluginStateListener;
 import org.pf4j.PluginStatusProvider;
 import org.pf4j.PluginWrapper;
+import org.springframework.beans.factory.InitializingBean;
 import org.springframework.context.ApplicationContext;
 import org.springframework.data.util.Lazy;
 import run.halo.app.infra.SystemVersionSupplier;
@@ -39,30 +40,23 @@ import run.halo.app.plugin.event.PluginStartedEvent;
  * @since 2.0.0
  */
 @Slf4j
-public class HaloPluginManager extends DefaultPluginManager implements SpringPluginManager {
+public class HaloPluginManager extends DefaultPluginManager
+    implements SpringPluginManager, InitializingBean {
 
     private final ApplicationContext rootContext;
 
-    private final Lazy<ApplicationContext> sharedContext;
+    private Lazy<ApplicationContext> sharedContext;
 
     private final PluginProperties pluginProperties;
 
+    private final SystemVersionSupplier systemVersionSupplier;
+
     public HaloPluginManager(ApplicationContext rootContext,
         PluginProperties pluginProperties,
         SystemVersionSupplier systemVersionSupplier) {
         this.pluginProperties = pluginProperties;
         this.rootContext = rootContext;
-        // We have to initialize share context lazily because the root context has not refreshed
-        this.sharedContext = Lazy.of(() -> SharedApplicationContextFactory.create(rootContext));
-        super.runtimeMode = pluginProperties.getRuntimeMode();
-
-        setExactVersionAllowed(pluginProperties.isExactVersionAllowed());
-        setSystemVersion(systemVersionSupplier.get().getNormalVersion());
-
-        super.initialize();
-
-        // the listener must be after the super#initialize
-        addPluginStateListener(new PluginStartedListener());
+        this.systemVersionSupplier = systemVersionSupplier;
     }
 
     @Override
@@ -71,6 +65,18 @@ public class HaloPluginManager extends DefaultPluginManager implements SpringPlu
         // components before properties set.
     }
 
+    @Override
+    public void afterPropertiesSet() throws Exception {
+        super.runtimeMode = pluginProperties.getRuntimeMode();
+        this.sharedContext = Lazy.of(() -> SharedApplicationContextFactory.create(rootContext));
+        setExactVersionAllowed(pluginProperties.isExactVersionAllowed());
+        setSystemVersion(systemVersionSupplier.get().toStableVersion().toString());
+
+        super.initialize();
+        // the listener must be after the super#initialize
+        addPluginStateListener(new PluginStartedListener());
+    }
+
     @Override
     protected ExtensionFactory createExtensionFactory() {
         return new SpringExtensionFactory(this);
@@ -169,6 +175,10 @@ public class HaloPluginManager extends DefaultPluginManager implements SpringPlu
 
     @Override
     public List<PluginWrapper> getDependents(String pluginId) {
+        if (getPlugin(pluginId) == null) {
+            return List.of();
+        }
+
         var dependents = new ArrayList<PluginWrapper>();
         var stack = new Stack<String>();
         dependencyResolver.getDependents(pluginId).forEach(stack::push);

application/src/test/java/run/halo/app/plugin/HaloPluginManagerTest.java

@@ -0,0 +1,58 @@
+package run.halo.app.plugin;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.Mockito.when;
+
+import com.github.zafarkhaja.semver.Version;
+import java.nio.file.Path;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.junit.jupiter.api.io.TempDir;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.pf4j.RuntimeMode;
+import org.springframework.context.ApplicationContext;
+import run.halo.app.infra.SystemVersionSupplier;
+
+@ExtendWith(MockitoExtension.class)
+class HaloPluginManagerTest {
+
+    @Mock
+    PluginProperties pluginProperties;
+
+    @Mock
+    SystemVersionSupplier systemVersionSupplier;
+
+    @Mock
+    ApplicationContext rootContext;
+
+    @InjectMocks
+    HaloPluginManager pluginManager;
+
+    @TempDir
+    Path tempDir;
+
+    @Test
+    void shouldGetDependentsWhilePluginsNotResolved() throws Exception {
+        when(pluginProperties.getRuntimeMode()).thenReturn(RuntimeMode.DEPLOYMENT);
+        when(systemVersionSupplier.get()).thenReturn(Version.of(1, 2, 3));
+        pluginManager.afterPropertiesSet();
+        // if we don't invoke resolves
+        var dependents = pluginManager.getDependents("fake-plugin");
+        assertTrue(dependents.isEmpty());
+    }
+
+    @Test
+    void shouldGetDependentsWhilePluginsResolved() throws Exception {
+        when(pluginProperties.getRuntimeMode()).thenReturn(RuntimeMode.DEPLOYMENT);
+        when(systemVersionSupplier.get()).thenReturn(Version.of(1, 2, 3));
+        pluginManager.afterPropertiesSet();
+        pluginManager.loadPlugins();
+        // if we don't invoke resolves
+        var dependents = pluginManager.getDependents("fake-plugin");
+        assertTrue(dependents.isEmpty());
+    }
+
+
+}