Fix sync blocks logic

crawlers/mooncrawl/mooncrawl/ethcrawler.py

@@ -97,6 +97,13 @@ def ethcrawler_blocks_sync_handler(args: argparse.Namespace) -> None:
         )
         if latest_stored_block_number is None:
             latest_stored_block_number = 0
+        
+        if latest_stored_block_number >= latest_block_number:
+            logger.info(
+                f"Synchronization is unnecessary for blocks {latest_stored_block_number}-{latest_block_number - 1}"
+            )
+            time.sleep(5)
+            continue
 
         block_number_difference = latest_block_number - 1 - latest_stored_block_number
 
@@ -108,17 +115,10 @@ def ethcrawler_blocks_sync_handler(args: argparse.Namespace) -> None:
                 time.sleep(5)
                 continue
             else:
-                bottom_block_number = latest_block_number - args.confirmations
+                bottom_block_number = latest_stored_block_number + 1
         else:
             bottom_block_number = max(latest_stored_block_number + 1, args.start)
 
-        if latest_stored_block_number >= latest_block_number:
-            logger.info(
-                f"Synchronization is unnecessary for blocks {latest_stored_block_number}-{latest_block_number - 1}"
-            )
-            time.sleep(5)
-            continue
-
         for blocks_numbers_list in yield_blocks_numbers_lists(
             f"{bottom_block_number}-{latest_block_number}",
             order=args.order,