Minor refactor and print records deleted

main.go

@@ -79,25 +79,10 @@ func selectRecordsToDelete(recs []libdns.Record) []libdns.Record {
 	case delRange == "none":
 		return nil
 	default:
-		indexGen := func() func() int {
-			indexes := parseRange(delRange, len(recs)-1)
-			indexIndex := 0
-			return func() int {
-				if indexIndex == len(indexes) {
-					return -1
-				}
-				val := indexes[indexIndex]
-				indexIndex++
-				return val
-			}
-		}()
+		indexes := parseRange(delRange, len(recs)-1)
 		return func() (result []libdns.Record) {
-			nextIndex := indexGen()
-			for i, r := range recs {
-				if i == nextIndex {
-					result = append(result, r)
-					nextIndex = indexGen()
-				}
+			for _, index := range indexes {
+				result = append(result, recs[index])
 			}
 			return
 		}()
@@ -127,11 +112,11 @@ func main() {
 				log.Panicln(err)
 			}
 			recs = selectRecordsToDelete(recs)
-			recs, err = provider.DeleteRecords(ctx, zone, recs)
+			deletedRecords, err := provider.DeleteRecords(ctx, zone, recs)
 			if err != nil {
 				log.Panicln(err)
 			}
-			if len(recs) == 0 {
+			if len(deletedRecords) == 0 {
 				fmt.Println("Nothing was deleted")
 			} else {
 				fmt.Println("Records deleted:")