From 19fb11461375fb0f9a3030d59c82b4ac49f67fbd Mon Sep 17 00:00:00 2001
From: Zakhar Petukhov <zakharpetukhov@protonmail.com>
Date: Thu, 12 Sep 2024 19:25:16 +0800
Subject: [PATCH] change next_item_index from uint64 to int64

---
 pkg/core/nft.go        | 2 +-
 pkg/litestorage/nft.go | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkg/core/nft.go b/pkg/core/nft.go
index 176745c9..66dd6995 100644
--- a/pkg/core/nft.go
+++ b/pkg/core/nft.go
@@ -25,7 +25,7 @@ type NftItem struct {
 
 type NftCollection struct {
 	Address           tongo.AccountID
-	NextItemIndex     uint64
+	NextItemIndex     int64
 	OwnerAddress      *tongo.AccountID
 	ContentLayout     int
 	CollectionContent []byte
diff --git a/pkg/litestorage/nft.go b/pkg/litestorage/nft.go
index d869ea89..66591b37 100644
--- a/pkg/litestorage/nft.go
+++ b/pkg/litestorage/nft.go
@@ -64,7 +64,7 @@ func (s *LiteStorage) GetNftCollectionByCollectionAddress(ctx context.Context, a
 		OwnerAddress:      accountID,
 		CollectionContent: rawContent,
 		ContentLayout:     int(fullContent.Layout),
-		NextItemIndex:     g.Pointer(big.Int(source.NextItemIndex)).Uint64(),
+		NextItemIndex:     g.Pointer(big.Int(source.NextItemIndex)).Int64(),
 	}
 	if fullContent.Layout == tep64.OffChain {
 		meta, err := core.GetNftMetaData(string(fullContent.Data))