From 1a43443a615424c58fb9ca9ca67d86b37500493c Mon Sep 17 00:00:00 2001
From: Nikolay Dorofeev <dorich2000@gmail.com>
Date: Sun, 12 Nov 2023 11:35:53 +0400
Subject: [PATCH] Add requireEnoughTonForMinting function to NftCollection
 trait

---
 contracts/contracts/lib/trait_nft_collection.tact | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/contracts/contracts/lib/trait_nft_collection.tact b/contracts/contracts/lib/trait_nft_collection.tact
index db6a5a91..cb50f55a 100644
--- a/contracts/contracts/lib/trait_nft_collection.tact
+++ b/contracts/contracts/lib/trait_nft_collection.tact
@@ -21,6 +21,9 @@ trait NftCollection with Deployable, Accounting {
         require(false, "Not implemented");
     }
 
+    virtual fun requireEnoughTonForMinting() {
+    }
+
     virtual fun calculateNftItemInitalBalance(): Int {
         return self.calculateFullAmountForSending()
     }
@@ -54,8 +57,9 @@ trait NftCollection with Deployable, Accounting {
     // ===== Recievers ===== //
 
     receive("Mint"){
-        let ctx: Context = context();
         require(self.next_item_index >= 0, "non-sequential NFTs");
+        self.requireEnoughTonForMinting();
+        let ctx: Context = context();
         let nft_init: StateInit = self.getNftItemInit(self.next_item_index);
         send(SendParameters{
                 to: contractAddress(nft_init),