From b0883477870fe2f733cf9cf94b1d35d0542faec1 Mon Sep 17 00:00:00 2001
From: michaelhly <michael@saber.so>
Date: Sun, 29 Aug 2021 19:12:43 -0400
Subject: [PATCH 1/2] token-utils: Add helper to mint a NFT

---
 packages/token-utils/src/instructions/nft.ts | 55 ++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 packages/token-utils/src/instructions/nft.ts

diff --git a/packages/token-utils/src/instructions/nft.ts b/packages/token-utils/src/instructions/nft.ts
new file mode 100644
index 000000000..38ba9468c
--- /dev/null
+++ b/packages/token-utils/src/instructions/nft.ts
@@ -0,0 +1,55 @@
+import type { Provider, TransactionEnvelope } from "@saberhq/solana-contrib";
+import { Token as SPLToken, TOKEN_PROGRAM_ID, u64 } from "@solana/spl-token";
+import type { PublicKey, Signer } from "@solana/web3.js";
+
+import { createInitMintInstructions, getOrCreateATA } from ".";
+
+export const mintNFT = async (
+  provider: Provider,
+  mintKP: Signer,
+  owner: PublicKey = provider.wallet.publicKey
+): Promise<TransactionEnvelope> => {
+  // Temporary mint authority
+  const mintAuthority = provider.wallet.publicKey;
+  // Mint for the NFT
+  const tx = await createInitMintInstructions({
+    provider,
+    mintKP,
+    decimals: 0,
+    mintAuthority,
+  });
+  // Token account for the NFT
+  const { address, instruction } = await getOrCreateATA({
+    provider,
+    mint: mintKP.publicKey,
+    owner: owner,
+    payer: provider.wallet.publicKey,
+  });
+  if (instruction) {
+    tx.instructions.push(instruction);
+  }
+  // Mint to owner's ATA
+  tx.instructions.push(
+    SPLToken.createMintToInstruction(
+      TOKEN_PROGRAM_ID,
+      mintKP.publicKey,
+      address,
+      mintAuthority,
+      [],
+      new u64(1)
+    )
+  );
+  // Set mint authority of the NFT to NULL
+  tx.instructions.push(
+    SPLToken.createSetAuthorityInstruction(
+      TOKEN_PROGRAM_ID,
+      mintKP.publicKey,
+      null,
+      "MintTokens",
+      provider.wallet.publicKey,
+      []
+    )
+  );
+
+  return tx;
+};

From d42f42a6edbde1040497ca2e1011349c5cf92729 Mon Sep 17 00:00:00 2001
From: michaelhly <michael@saber.so>
Date: Sun, 29 Aug 2021 19:20:37 -0400
Subject: [PATCH 2/2] mintAuthority -> tempMintAuthority

---
 packages/token-utils/src/instructions/nft.ts | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/packages/token-utils/src/instructions/nft.ts b/packages/token-utils/src/instructions/nft.ts
index 38ba9468c..774bf4947 100644
--- a/packages/token-utils/src/instructions/nft.ts
+++ b/packages/token-utils/src/instructions/nft.ts
@@ -10,13 +10,13 @@ export const mintNFT = async (
   owner: PublicKey = provider.wallet.publicKey
 ): Promise<TransactionEnvelope> => {
   // Temporary mint authority
-  const mintAuthority = provider.wallet.publicKey;
+  const tempMintAuthority = provider.wallet.publicKey;
   // Mint for the NFT
   const tx = await createInitMintInstructions({
     provider,
     mintKP,
     decimals: 0,
-    mintAuthority,
+    mintAuthority: tempMintAuthority,
   });
   // Token account for the NFT
   const { address, instruction } = await getOrCreateATA({
@@ -34,7 +34,7 @@ export const mintNFT = async (
       TOKEN_PROGRAM_ID,
       mintKP.publicKey,
       address,
-      mintAuthority,
+      tempMintAuthority,
       [],
       new u64(1)
     )
@@ -46,7 +46,7 @@ export const mintNFT = async (
       mintKP.publicKey,
       null,
       "MintTokens",
-      provider.wallet.publicKey,
+      tempMintAuthority,
       []
     )
   );