From d16b89c6f14dc3b8234a003e24da14a4673b1f0c Mon Sep 17 00:00:00 2001
From: zhl <zhl010101@gmail.com>
Date: Wed, 14 Jun 2023 13:33:10 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E7=94=A8=E6=88=B7claim?=
 =?UTF-8?q?=E6=AC=A1=E6=95=B0=E9=99=90=E5=88=B6?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 contracts/activity/ClaimBoxFactory.sol | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/contracts/activity/ClaimBoxFactory.sol b/contracts/activity/ClaimBoxFactory.sol
index a16b9da..f0be548 100644
--- a/contracts/activity/ClaimBoxFactory.sol
+++ b/contracts/activity/ClaimBoxFactory.sol
@@ -11,6 +11,7 @@ interface IClaimBox {
 contract ClaimBoxFactory is HasSignature, TimeChecker {
   address public executor;
   mapping(address => bool) public tokenSupported;
+  mapping(address => uint256) public claimHistory;
 
   event BoxClaimed(
     address indexed nftAddress,
@@ -45,6 +46,10 @@ contract ClaimBoxFactory is HasSignature, TimeChecker {
   ) external signatureValid(signature) timeValid(startTime) {
     require(tokenSupported[nftAddress], "ClaimBoxFactory: unsupported NFT");
     address to = _msgSender();
+    require(
+      claimHistory[to] == 0,
+      "ClaimBoxFactory: you have claimed this NFT"
+    );
     bytes32 criteriaMessageHash = getMessageHash(
       to,
       nftAddress,
@@ -54,6 +59,7 @@ contract ClaimBoxFactory is HasSignature, TimeChecker {
     checkSigner(executor, criteriaMessageHash, signature);
     uint256 tokenId = IClaimBox(nftAddress).mint(to);
     _useSignature(signature);
+    claimHistory[to] = tokenId;
     emit BoxClaimed(nftAddress, to, saltNonce, tokenId);
   }