Token migration pr

contracts/sale/TokenMigration.sol

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+// SPDX-License-Identifier: GPL-3.0
+pragma solidity ^0.8.4;
+
+import "@openzeppelin/contracts/access/Ownable.sol";
+import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
+import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
+
+contract TokenMigration is Ownable, ReentrancyGuard {
+    error ZeroAddress();
+    error ZeroAmount();
+
+    event TokensMigrated(
+        address indexed account,
+        uint256 newTokenAmount,
+        uint256 oldTokenAmount
+    );
+
+    IERC20 public immutable NEW_TOKEN;
+    IERC20 public immutable OLD_TOKEN;
+
+    uint256 internal immutable NEW_SUPPLY;
+    uint256 internal immutable OLD_SUPPLY;
+
+    constructor(address _newToken, address _oldToken) {
+        if (_newToken == address(0) || _oldToken == address(0))
+            revert ZeroAddress();
+
+        NEW_TOKEN = IERC20(_newToken);
+        OLD_TOKEN = IERC20(_oldToken);
+
+        NEW_SUPPLY = IERC20(_newToken).totalSupply();
+        OLD_SUPPLY = IERC20(_oldToken).totalSupply();
+    }
+
+    function migrate(uint256 _amount) external nonReentrant {
+        if (_amount == 0) revert ZeroAmount();
+
+        uint256 _amountToTransfer = (_amount * NEW_SUPPLY) / OLD_SUPPLY;
+
+        OLD_TOKEN.transferFrom(msg.sender, address(this), _amount);
+        NEW_TOKEN.transfer(msg.sender, _amountToTransfer);
+
+        emit TokensMigrated(msg.sender, _amountToTransfer, _amount);
+    }
+
+    function withdrawOldToken(uint256 _amount) external onlyOwner {
+        OLD_TOKEN.transfer(msg.sender, _amount);
+    }
+
+    function withdrawNewToken(uint256 _amount) external onlyOwner {
+        NEW_TOKEN.transfer(msg.sender, _amount);
+    }
+}

contracts/test/MockNFTValueProviderMigration.sol

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+// SPDX-License-Identifier: GPL-3.0
+pragma solidity ^0.8.4;
+
+import "../vaults/NFTValueProvider.sol";
+
+contract MockNFTValueProviderMigration is NFTValueProvider {
+    function setJPEG(IERC20Upgradeable _jpeg) external {
+        jpeg = _jpeg;
+    }
+
+    function setLegacyTraitLock(uint256 _index, uint256 _lockedValue) external {
+        traitBoostPositions[_index].isNewToken = false;
+        traitBoostPositions[_index].lockedValue = _lockedValue;
+    }
+
+    function setLegacyLTVLock(uint256 _index, uint256 _lockedValue) external {
+        ltvBoostPositions[_index].isNewToken = false;
+        ltvBoostPositions[_index].lockedValue = _lockedValue;
+    }
+}

contracts/tokens/JPGD.sol

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+// SPDX-License-Identifier: GPL-3.0
+pragma solidity ^0.8.4;
+
+import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Pausable.sol";
+import "@openzeppelin/contracts/access/AccessControlEnumerable.sol";
+import "@openzeppelin/contracts/utils/Context.sol";
+
+contract JPGD is
+    Context,
+    AccessControlEnumerable,
+    ERC20Burnable,
+    ERC20Pausable
+{
+    bytes32 public constant MINTER_ROLE = keccak256("MINTER_ROLE");
+    bytes32 public constant PAUSER_ROLE = keccak256("PAUSER_ROLE");
+
+    constructor() ERC20("JPEG\xE2\x80\x99d", "JPGD") {
+        _setupRole(DEFAULT_ADMIN_ROLE, _msgSender());
+    }
+
+    /// @dev Creates `amount` tokens and assigns them to `account`, increasing
+    /// the total supply.
+    ///
+    /// Emits a {Transfer} event with `from` set to the zero address.
+    ///
+    /// Requirements:
+    ///
+    /// - `account` cannot be the zero address.
+    ///
+    function mint(address to, uint256 amount) external {
+        require(
+            hasRole(MINTER_ROLE, _msgSender()),
+            "PETH: must have minter role to mint"
+        );
+        _mint(to, amount);
+    }
+
+    /// @dev Triggers stopped state.
+    ///
+    /// Requirements:
+    ///
+    /// - The contract must not be paused.
+    ///
+    function pause() external {
+        require(
+            hasRole(PAUSER_ROLE, _msgSender()),
+            "PETH: must have pauser role to pause"
+        );
+        _pause();
+    }
+
+    /// @dev Returns to normal state.
+    ///
+    /// Requirements:
+    ///
+    /// - The contract must be paused.
+    ///
+    function unpause() external {
+        require(
+            hasRole(PAUSER_ROLE, _msgSender()),
+            "PETH: must have pauser role to unpause"
+        );
+        _unpause();
+    }
+
+    //override required by solidity
+    /// @inheritdoc ERC20Pausable
+    function _beforeTokenTransfer(
+        address from,
+        address to,
+        uint256 amount
+    ) internal virtual override(ERC20, ERC20Pausable) {
+        super._beforeTokenTransfer(from, to, amount);
+    }
+}