feat: Initial Setup

2024-02-27 11:40:56 +01:00
parent 3cf78c398e
commit 76bc1f58ac
2 changed files with 158 additions and 0 deletions
--- a/evm/src/etherfi/EtherfiAdapter.sol
+++ b/evm/src/etherfi/EtherfiAdapter.sol
@@ -0,0 +1,122 @@
+// SPDX-License-Identifier: AGPL-3.0-or-later
+pragma experimental ABIEncoderV2;
+pragma solidity ^0.8.13;
+
+import {IERC20, ISwapAdapter} from "src/interfaces/ISwapAdapter.sol";
+
+/// @title Etherfi Adapter
+/// @dev This contract supports the following swaps: eETH<->ETH, wETH<->eETH, wETH<->ETH
+contract EtherfiAdapter is ISwapAdapter {
+
+    IWeEth wEeth;
+    IeEth eEth;
+    ILiquidityPool liquidityPool;
+
+    constructor(address _wEeth) {
+        wEeth = IWeEth(_wEeth);
+        eEth = wEeth.eETH();
+        liquidityPool = eEth.liquidityPool();
+    }
+
+    /// @dev Check if tokens in input are supported by this adapter
+    modifier checkInputTokens(address sellToken, address buyToken) {
+        if(sellToken == buyToken) {
+            revert Unavailable("This pool only supports eETH, weEth and ETH");
+        }
+        if(sellToken != address(wEeth) && sellToken != address(eEth) && sellToken && sellToken != address(0)) {
+            revert Unavailable("This pool only supports eETH, weEth and ETH");
+        }
+        if(buyToken != address(wEeth) && buyToken != address(eEth) && buyToken != address(0)) {
+            revert Unavailable("This pool only supports eETH, weEth and ETH");
+        }
+        _;
+    }
+
+    function price(
+        bytes32 _poolId,
+        IERC20 _sellToken,
+        IERC20 _buyToken,
+        uint256[] memory _specifiedAmounts
+    ) external view override returns (Fraction[] memory _prices) {
+        revert NotImplemented("TemplateSwapAdapter.price");
+    }
+
+    function swap(
+        bytes32 poolId,
+        IERC20 sellToken,
+        IERC20 buyToken,
+        OrderSide side,
+        uint256 specifiedAmount
+    ) external returns (Trade memory trade) {
+        revert NotImplemented("TemplateSwapAdapter.swap");
+    }
+
+    function getLimits(bytes32 poolId, IERC20 sellToken, IERC20 buyToken)
+        external
+        returns (uint256[] memory limits)
+    {
+        revert NotImplemented("TemplateSwapAdapter.getLimits");
+    }
+
+    function getCapabilities(bytes32 poolId, IERC20 sellToken, IERC20 buyToken)
+        external
+        returns (Capability[] memory capabilities)
+    {
+        revert NotImplemented("TemplateSwapAdapter.getCapabilities");
+    }
+
+    function getTokens(bytes32 poolId)
+        external
+        returns (IERC20[] memory tokens)
+    {
+        revert NotImplemented("TemplateSwapAdapter.getTokens");
+    }
+
+    function getPoolIds(uint256 offset, uint256 limit)
+        external
+        returns (bytes32[] memory ids)
+    {
+        revert NotImplemented("TemplateSwapAdapter.getPoolIds");
+    }
+}
+
+interface ILiquidityPool {
+
+    function numPendingDeposits() external view returns (uint32);
+    function totalValueOutOfLp() external view returns (uint128);
+    function totalValueInLp() external view returns (uint128);
+    function getTotalEtherClaimOf(address _user) external view returns (uint256);
+    function getTotalPooledEther() external view returns (uint256);
+    function sharesForAmount(uint256 _amount) external view returns (uint256);
+    function sharesForWithdrawalAmount(uint256 _amount) external view returns (uint256);
+    function amountForShare(uint256 _share) external view returns (uint256);
+
+    function deposit() external payable returns (uint256);
+    function deposit(address _referral) external payable returns (uint256);
+    function deposit(address _user, address _referral) external payable returns (uint256);
+
+}
+
+interface IeEth {
+
+    function liquidityPool() external view returns (ILiquidityPool);
+
+    function totalShares() external view returns (uint256);
+
+    function shares(address _user) external view returns (uint256);
+
+}
+
+interface IWeEth {
+
+    function eETH() external view returns (IeEth);
+
+    function getWeETHByeETH(uint256 _eETHAmount) external view returns (uint256);
+
+    function getEETHByWeETH(uint256 _weETHAmount) external view returns (uint256);
+
+    function wrap(uint256 _eETHAmount) external returns (uint256);
+
+    function unwrap(uint256 _weETHAmount) external returns (uint256);
+
+}