feat: add dummy housekeeping tasks

engine/housekeeping.go

@@ -0,0 +1,26 @@
+package engine
+
+import "polaris/log"
+
+func (c *Engine) housekeeping() error {
+	log.Infof("start housekeeping tasks...")
+	
+	if err := c.checkDbScraps(); err != nil {
+		return err
+	}
+	if err := c.checkImageFilesInterity(); err != nil {
+		return err
+	}
+	
+	return nil
+}
+
+func (c *Engine) checkDbScraps() error {
+	//TODO: remove episodes that are not associated with any series
+	return nil
+}
+
+func (c *Engine) checkImageFilesInterity() error {
+	//TODO: download missing image files, remove unused image files
+	return nil
+}

engine/scheduler.go

@@ -41,6 +41,7 @@ func (c *Engine) addSysCron() {
 	})
 	c.registerCronJob("check_series_new_release", "0 0 */12 * * *", c.checkAllSeriesNewSeason)
 	c.registerCronJob("update_import_lists", "0 */20 * * * *", c.periodicallyUpdateImportlist)
+	c.registerCronJob("housekeeping", "0 0 * * * *", c.housekeeping)
 
 	c.schedulers.Range(func(key string, value scheduler) bool {
 		log.Debugf("add cron job: %v", key)