update NFTEE2.sol constructor, add NFTEE_BASE_URI to .env

- replace verifyingAddress with baseUrl
- in verifySignature, verifyingAddress is replaced by recipient

.env.example

@@ -5,3 +5,4 @@ export L1_PRIVKEY=
 export L1_RPC=
 export BUILDER_URL=
 export OPENAI_KEY=
+export NFTEE_BASE_URI=

examples/chatGPT-nft-minter/ethL1/NFTEE2.sol

@@ -9,7 +9,8 @@ import {LibString} from "solmate/utils/LibString.sol";
 contract SuaveNFT is ERC721 {
     using LibString for uint256;
 
-    string private constant BASE_URI = "http://localhost:8080/metadata/";
+    // string private constant BASE_URI = "http://localhost:8080/metadata/";
+    string private baseUri;
 
     // Event declarations
     event NFTMintedEvent(address indexed recipient, uint256 indexed tokenId);
@@ -22,18 +23,15 @@ contract SuaveNFT is ERC721 {
     // keccak256("Mint(string name,string symbol,uint256 tokenId,address recipient)");
     bytes32 public constant MINT_TYPEHASH = 0x686aa0ee2a8dd75ace6f66b3a5e79d3dfd8e25e05a5e494bb85e72214ab37880;
 
-    // Authorized signer's address
-    address public authorizedSigner;
-
     // token data
     mapping(uint256 => string) public tokenData;
 
     // NFT Details
     string public constant NAME = "SUAVE_NFT2";
     string public constant SYMBOL = "NFTEE";
 
-    constructor(address _authorizedSigner) ERC721(NAME, SYMBOL) {
-        authorizedSigner = _authorizedSigner;
+    constructor(string memory _baseUri) ERC721(NAME, SYMBOL) {
+        baseUri = _baseUri;
     }
 
     // Mint NFT with a signed EIP-712 message
@@ -80,7 +78,7 @@ contract SuaveNFT is ERC721 {
         );
 
         address recovered = ecrecover(digestHash, v, r, s);
-        return recovered == authorizedSigner;
+        return recovered == recipient;
     }
 
     function _exists(uint256 tokenId) internal view returns (bool) {
@@ -91,6 +89,6 @@ contract SuaveNFT is ERC721 {
     /// but we're just using it to hold string data for NFTs.
     function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
         require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
-        return string(abi.encodePacked(BASE_URI, tokenId.toString()));
+        return string(abi.encodePacked(baseUri, tokenId.toString()));
     }
 }

examples/chatGPT-nft-minter/main.go

@@ -93,14 +93,14 @@ func parseNFTLogs(chatNft *framework.Contract, receipt *types.Receipt) (*QueryRe
 	return queryResult, nftCreated
 }
 
-func deployEthNFTEE(ethClient *ethclient.Client, signerAddr common.Address, auth *bind.TransactOpts) (common.Address, common.Hash, *framework.Artifact) {
+func deployEthNFTEE(ethClient *ethclient.Client, signerAddr common.Address, auth *bind.TransactOpts, baseURI string) (common.Address, common.Hash, *framework.Artifact) {
 	artifact, err := framework.ReadArtifact("NFTEE2.sol/SuaveNFT.json")
 	if err != nil {
 		panic(err)
 	}
 
 	// Deploy contract with signer address as a constructor argument
-	_, tx, _, err := bind.DeployContract(auth, *artifact.Abi, artifact.Code, ethClient, signerAddr)
+	_, tx, _, err := bind.DeployContract(auth, *artifact.Abi, artifact.Code, ethClient, baseURI)
 	if err != nil {
 		log.Fatalf("Failed to deploy new contract: %v", err)
 	}
@@ -196,7 +196,7 @@ func main() {
 	log.Printf("ChatNFT deployed on SUAVE (address=%s)", chatNft.Raw().Address())
 
 	// Deploy Ethereum L1 Contract
-	nfteeAddress, nfteeTxHash, nfteeArtifact := deployEthNFTEE(ethClient, privKey.Address(), auth)
+	nfteeAddress, nfteeTxHash, nfteeArtifact := deployEthNFTEE(ethClient, privKey.Address(), auth, cfg.NfteeBaseURI)
 	log.Printf("NFTEE deployed on L1 (%s): %s\n", nfteeTxHash.Hex(), nfteeAddress.Hex())
 
 	// Create NFT on SUAVE (sign a message to approve a mint on L1)

framework/framework.go

@@ -201,6 +201,9 @@ type Config struct {
 
 	// OpenAI API key
 	OpenAIKey string `env:"OPENAI_KEY"`
+
+	NfteeBaseURI string `env:"NFTEE_BASE_URI, default=http://localhost:8080/metadata/"`
+	// TODO: change this =============================>^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ to a public IPFS node
 }
 
 type ConfigOption func(c *Config)