feat(zkgm): allow erc20 metadata update via custom authority

Author: hussein-aitlahcen

evm/contracts/apps/ucs/03-zkgm/ZkgmERC20.sol

@@ -26,6 +26,8 @@ contract ZkgmERC20 is
 
     struct ZkgmERC20Storage {
         address minter;
+        string name;
+        string symbol;
         uint8 decimals;
     }
 
@@ -66,9 +68,29 @@ contract ZkgmERC20 is
         __ERC20_init(_name, _symbol);
         ZkgmERC20Storage storage $ = _getZkgmERC20Storage();
         $.minter = _minter;
+        $.name = _name;
+        $.symbol = _symbol;
         $.decimals = _decimals;
     }
 
+    function name()
+        public
+        view
+        override(ERC20Upgradeable, IERC20Metadata)
+        returns (string memory)
+    {
+        return _getZkgmERC20Storage().name;
+    }
+
+    function symbol()
+        public
+        view
+        override(ERC20Upgradeable, IERC20Metadata)
+        returns (string memory)
+    {
+        return _getZkgmERC20Storage().symbol;
+    }
+
     function decimals()
         public
         view
@@ -86,6 +108,17 @@ contract ZkgmERC20 is
         _burn(from, amount);
     }
 
+    function setMetadata(
+        string calldata _name,
+        string calldata _symbol,
+        uint8 _decimals
+    ) external restricted {
+        ZkgmERC20Storage storage $ = _getZkgmERC20Storage();
+        $.name = _name;
+        $.symbol = _symbol;
+        $.decimals = _decimals;
+    }
+
     modifier onlyMinter() {
         if (msg.sender != _getZkgmERC20Storage().minter) {
             revert ERC20Unauthorized();

evm/scripts/Deploy.s.sol

@@ -27,7 +27,7 @@ import "./Deployer.sol";
 
 library LIB {
     string constant MULTICALL = "lib/multicall-v2";
-    string constant ZKGM_ERC20 = "lib/zkgm-erc20";
+    string constant ZKGM_ERC20 = "lib/zkgm-erc20-v2";
 }
 
 library IBC {
@@ -482,6 +482,41 @@ contract DeployStateLensIcs23MptClient is UnionScript {
     }
 }
 
+contract DeployZkgmERC20 is UnionScript {
+    using LibString for *;
+
+    address immutable deployer;
+    address immutable sender;
+
+    constructor() {
+        deployer = vm.envAddress("DEPLOYER");
+        sender = vm.envAddress("SENDER");
+    }
+
+    function getDeployer() internal view override returns (Deployer) {
+        return Deployer(deployer);
+    }
+
+    function getDeployed(
+        string memory salt
+    ) internal view returns (address) {
+        return CREATE3.predictDeterministicAddress(
+            keccak256(abi.encodePacked(sender.toHexString(), "/", salt)),
+            deployer
+        );
+    }
+
+    function run() public {
+        uint256 privateKey = vm.envUint("PRIVATE_KEY");
+
+        vm.startBroadcast(privateKey);
+        ZkgmERC20 zkgmERC20 = deployZkgmERC20();
+        vm.stopBroadcast();
+
+        console.log("ZkgmERC20: ", address(zkgmERC20));
+    }
+}
+
 contract DeployUCS03 is UnionScript {
     using LibString for *;