Use SaveBlock api

file.go

@@ -467,19 +467,10 @@ func (fp* FilePages) saveBlocksFromPage(dirname string, page Page) error {
 	}
 
 	for id, block := range blocks {
-		log.Printf("Writing to %q\n", id)
-		f, err := os.OpenFile(filepath.Join(dirname, BlocksDirectory, id), os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0644)
-		if err != nil {
-			log.Println(err)
-			continue
-		}
-		enc := json.NewEncoder(f)
-		enc.SetIndent("", "  ")
-		err = enc.Encode(&block)
+		err := fp.blockRepo.SaveBlock(id, block)
 		if err != nil {
 			log.Println(err)
 		}
-		f.Close()
 	}
 
 	return err