enable 'lucy handler delete all'

cmd/lucy/handlercmd.go

@@ -76,6 +76,21 @@ func handlerCmd(
 
 		WriteHandlerInfoTable(os.Stdout, []models.EventHandler{*returned})
 	case "delete":
+		if cmd.Params.Get(0).StringOr("_not") == "all" {
+			handlers, err := c.GetHandlers(ctx)
+			if err != nil {
+				log.Fatalln(err)
+			}
+
+			for _, handler := range handlers {
+				_, err = c.DeleteHandler(ctx, handler.ID)
+				if err != nil {
+					log.Fatalln(err)
+				}
+			}
+
+			log.Printf("Deleted %d handlers", len(handlers))
+		} else {
 			id := cmd.Params.Get(0).Int()
 			if id == nil {
 				log.Fatalln("ID missing")
@@ -87,6 +102,7 @@ func handlerCmd(
 			}
 
 			WriteHandlerInfoTable(os.Stdout, []models.EventHandler{*handler})
+		}
 	default:
 		if cmd.Name != "help" {
 			log.Println("Unknown command:", cmd.Name)