Supported premint signature version returns an array

.changeset/serious-goats-exist.md

@@ -0,0 +1,5 @@
+---
+"@zoralabs/zora-1155-contracts": patch
+---
+
+Premint - added method getSupportedPremintSignatureVersions(contractAddress) that returns an array of the premint signature versions an 1155 contract supports.  If the contract hasn't been created yet, assumes that when it will be created it will support the latest versions of the signatures, so the function returns all versions.

packages/1155-contracts/src/delegation/ZoraCreator1155Attribution.sol

@@ -95,6 +95,12 @@ library ZoraCreator1155Attribution {
     string internal constant VERSION_2 = "2";
     bytes32 internal constant HASHED_VERSION_2 = keccak256(bytes(VERSION_2));
 
+    function allVersions() internal pure returns (string[] memory versions) {
+        versions = new string[](2);
+        versions[0] = VERSION_1;
+        versions[1] = VERSION_2;
+    }
+
     /**
      * @dev Returns the domain separator for the specified chain.
      */
@@ -416,6 +422,10 @@ library DelegatedTokenCreation {
         }
     }
 
+    function supportedPremintSignatureVersions() external pure returns (string[] memory versions) {
+        return ZoraCreator1155Attribution.allVersions();
+    }
+
     function _recoverCreatorAttribution(
         string memory version,
         bytes32 structHash,

packages/1155-contracts/src/delegation/ZoraCreator1155PremintExecutorImpl.sol

@@ -214,21 +214,28 @@ contract ZoraCreator1155PremintExecutorImpl is
         );
     }
 
-    /// @notice Returns the version of the premint signature that the contract supports
+    /// @notice Returns the versions of the premint signature that the contract supports
     /// @param contractAddress The address of the contract to check
-    /// @return The version of the premint signature that the contract supports.  If it doesn't support premint
-    /// returns 0
-    function supportedPremintSignatureVersions(address contractAddress) external view returns (string memory) {
+    /// @return versions The versions of the premint signature that the contract supports.  If contract hasn't been created yet,
+    /// assumes that when it will be created it will support the latest versions of the signatures, so the function returns all versions.
+    function supportedPremintSignatureVersions(address contractAddress) external view returns (string[] memory versions) {
+        // if contract hasn't been created yet, assume it will be created with the latest version
+        // and thus supports all versions of the signature
+        if (contractAddress.code.length == 0) {
+            return ZoraCreator1155Attribution.allVersions();
+        }
+
         IZoraCreator1155 creatorContract = IZoraCreator1155(contractAddress);
         if (creatorContract.supportsInterface(type(IZoraCreator1155DelegatedCreation).interfaceId)) {
             return IZoraCreator1155DelegatedCreation(contractAddress).supportedPremintSignatureVersions();
         }
 
         // try get token id for uid 0 - if call fails, we know this didn't support premint
         try ERC1155DelegationStorageV1(contractAddress).delegatedTokenId(uint32(0)) returns (uint256) {
-            return "1";
+            versions = new string[](1);
+            versions[0] = ZoraCreator1155Attribution.VERSION_1;
         } catch {
-            return "0";
+            versions = new string[](0);
         }
     }
 

packages/1155-contracts/src/interfaces/IZoraCreator1155DelegatedCreation.sol

@@ -4,7 +4,7 @@ pragma solidity 0.8.17;
 interface IZoraCreator1155DelegatedCreation {
     event CreatorAttribution(bytes32 structHash, string domainName, string version, address creator, bytes signature);
 
-    function supportedPremintSignatureVersions() external pure returns (string memory);
+    function supportedPremintSignatureVersions() external pure returns (string[] memory);
 
     function delegateSetupNewToken(
         bytes memory premintConfigEncoded,

packages/1155-contracts/src/interfaces/IZoraCreator1155PremintExecutor.sol

@@ -94,5 +94,5 @@ interface IZoraCreator1155PremintExecutor is
 
     function getContractAddress(ContractCreationConfig calldata contractConfig) external view returns (address);
 
-    function supportedPremintSignatureVersions(address contractAddress) external view returns (string memory);
+    function supportedPremintSignatureVersions(address contractAddress) external view returns (string[] memory);
 }

packages/1155-contracts/src/nft/ZoraCreator1155Impl.sol

@@ -752,8 +752,8 @@ contract ZoraCreator1155Impl is
         return _getImplementation();
     }
 
-    function supportedPremintSignatureVersions() external pure returns (string memory) {
-        return ZoraCreator1155Attribution.VERSION_2;
+    function supportedPremintSignatureVersions() external pure returns (string[] memory) {
+        return DelegatedTokenCreation.supportedPremintSignatureVersions();
     }
 
     /// Sets up a new token using a token configuration and a signature created for the token creation parameters.

packages/1155-contracts/test/premint/Zora1155PremintExecutorProxy.t.sol

@@ -178,7 +178,9 @@ contract Zora1155PremintExecutorProxyTest is Test, ForkDeploymentConfig, IHasCon
 
         // 3. create premint on old version of contract using new version of preminter
         // verify the 1155 supports up to version 1
-        assertEq(forkedPreminterProxy.supportedPremintSignatureVersion(deterministicAddress), "1");
+        string[] memory supportedVersions = forkedPreminterProxy.supportedPremintSignatureVersions(deterministicAddress);
+        assertEq(supportedVersions.length, 1);
+        assertEq(supportedVersions[0], "1");
 
         uint32 existingUid = premintConfig.uid;
         premintConfig = Zora1155PremintFixtures.makeDefaultV1PremintConfig(fixedPriceMinter, creator);

packages/1155-contracts/test/premint/ZoraCreator1155PremintExecutor.t.sol

@@ -780,7 +780,33 @@ contract ZoraCreator1155PreminterTest is ForkDeploymentConfig, Test {
 
         // if contract is not a known 1155 contract that supports getting uid or premint sig version,
         // this should return 0
-        assertEq(preminter.supportedPremintSignatureVersion(erc1155BeforePremint), "0");
+        assertEq(preminter.supportedPremintSignatureVersions(erc1155BeforePremint).length, 0);
+    }
+
+    function test_premintVersion_beforeCreated_returnsAllVersion() external {
+        // build a premint
+        string[] memory supportedVersions = preminter.supportedPremintSignatureVersions(makeAddr("randomContract"));
+
+        assertEq(supportedVersions.length, 2);
+        assertEq(supportedVersions[0], "1");
+        assertEq(supportedVersions[1], "2");
+    }
+
+    function test_premintVersion_whenCreated_returnsAllVersion() external {
+        // build a premint
+        ContractCreationConfig memory contractConfig = makeDefaultContractCreationConfig();
+        PremintConfigV2 memory premintConfig = makeDefaultPremintConfig();
+
+        // sign and execute premint
+        address deterministicAddress = preminter.getContractAddress(contractConfig);
+
+        _signAndExecutePremint(contractConfig, premintConfig, creatorPrivateKey, block.chainid, premintExecutor, 1, "hi");
+
+        string[] memory supportedVersions = preminter.supportedPremintSignatureVersions(deterministicAddress);
+
+        assertEq(supportedVersions.length, 2);
+        assertEq(supportedVersions[0], "1");
+        assertEq(supportedVersions[1], "2");
     }
 
     function testPremintWithCreateReferral() public {