Allow to change WETH symbol

src/AxelarHandler.sol

@@ -33,16 +33,16 @@ contract AxelarHandler is
  error NativePaymentFailed();
  error WrappingNotEnabled();
 
- bytes public constant DISABLED_SYMBOL =
- keccak256(abi.encodePacked("DISABLED"));
-
  bytes32 private _wETHSymbolHash;
 
  string public wETHSymbol;
  IAxelarGasService public gasService;
 
  mapping(address => bool) public approved;
 
+ bytes32 public constant DISABLED_SYMBOL =
+ keccak256(abi.encodePacked("DISABLED"));
+
  constructor() {
  _disableInitializers();
  }
@@ -64,6 +64,13 @@ contract AxelarHandler is
  _wETHSymbolHash = keccak256(abi.encodePacked(wethSymbol));
  }
 
+ function setWETHSybol(string memory wethSymbol) external {
+ if (bytes(wethSymbol).length == 0) revert EmptySymbol();
+
+ wETHSymbol = wethSymbol;
+ _wETHSymbolHash = keccak256(abi.encodePacked(wethSymbol));
+ }
+
  /// @notice Sends native currency to other chains through the axelar gateway.
  /// @param destinationChain name of the destination chain.
  /// @param destinationAddress address of the destination wallet in string form.
@@ -306,7 +313,7 @@ contract AxelarHandler is
  // If unwrap is set and the token can be unwrapped.
  if (
  unwrap &&
- _wETHSymbolHash != DISABLED_SYMBOL
+ _wETHSymbolHash != DISABLED_SYMBOL &&
  keccak256(abi.encodePacked(tokenSymbol)) == _wETHSymbolHash
  ) {
  // Unwrap native token.