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AragonStakingAdapter.sol
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// Copyright (C) 2020 Zerion Inc. <https://zerion.io>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;
import { ERC20 } from "../../ERC20.sol";
import { ProtocolAdapter } from "../ProtocolAdapter.sol";
/**
* @dev StakingRewards contract interface.
* Only the functions required for AragonStakingAdapter contract are added.
* The StakingRewards contract is available here
* github.com/Synthetixio/synthetix/blob/master/contracts/StakingRewards.sol.
*/
interface StakingRewards {
function earned(address) external view returns (uint256);
}
/**
* @title Adapter for Aragon protocol.
* @dev Implementation of ProtocolAdapter interface.
* @author Igor Sobolev <[email protected]>
*/
contract AragonStakingAdapter is ProtocolAdapter {
string public constant override adapterType = "Asset";
string public constant override tokenType = "ERC20";
address internal constant ANT = 0x960b236A07cf122663c4303350609A66A7B288C0;
address internal constant UNI_ANT_WETH = 0xfa19de406e8F5b9100E4dD5CaD8a503a6d686Efe;
address internal constant LIQUIDITY = 0xEA4D68CF86BcE59Bf2bFA039B97794ce2c43dEBC;
/**
* @return Amount of staked tokens / rewards by the given account.
* @dev Implementation of ProtocolAdapter interface function.
*/
function getBalance(address token, address account) external view override returns (uint256) {
if (token == UNI_ANT_WETH) {
return ERC20(LIQUIDITY).balanceOf(account);
} else if (token == ANT) {
return StakingRewards(LIQUIDITY).earned(account);
} else {
return 0;
}
}
}