Add back enable/disable WS events (#9052)

app/plugin.go

@@ -170,6 +170,12 @@ func (a *App) EnablePlugin(id string) *model.AppError {
 		cfg.PluginSettings.PluginStates[id] = &model.PluginState{Enable: true}
 	})
 
+	if manifest.HasClient() {
+		message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_PLUGIN_ENABLED, "", "", "", nil)
+		message.Add("manifest", manifest.ClientManifest())
+		a.Publish(message)
+	}
+
 	// This call will cause SyncPluginsActiveState to be called and the plugin to be activated
 	if err := a.SaveConfig(a.Config(), true); err != nil {
 		if err.Id == "ent.cluster.save_config.error" {
@@ -208,6 +214,12 @@ func (a *App) DisablePlugin(id string) *model.AppError {
 		cfg.PluginSettings.PluginStates[id] = &model.PluginState{Enable: false}
 	})
 
+	if manifest.HasClient() {
+		message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_PLUGIN_DISABLED, "", "", "", nil)
+		message.Add("manifest", manifest.ClientManifest())
+		a.Publish(message)
+	}
+
 	if err := a.SaveConfig(a.Config(), true); err != nil {
 		return model.NewAppError("DisablePlugin", "app.plugin.config.app_error", nil, err.Error(), http.StatusInternalServerError)
 	}