Merge pull request #250 from Richa-iitr/aave-rewards-opt

Aave Optimism Rewards

contracts/optimism/connectors/aave/aave-rewards/v3/events.sol

@@ -0,0 +1,13 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+contract Events {
+	event LogClaimed(
+		address[] assets,
+		uint256 amt,
+		uint256 getId,
+		uint256 setId
+	);
+
+	event LogAllClaimed(address[] assets, address[] rewards, uint256[] amts);
+}

contracts/optimism/connectors/aave/aave-rewards/v3/helpers.sol

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+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+import { DSMath } from "../../../../common/math.sol";
+import { Basic } from "../../../../common/basic.sol";
+import { AaveIncentivesInterface } from "./interface.sol";
+
+abstract contract Helpers is DSMath, Basic {
+	/**
+	 * @dev Aave v3 Incentives
+	 */
+	AaveIncentivesInterface internal constant incentives =
+		AaveIncentivesInterface(0x929EC64c34a17401F460460D4B9390518E5B473e);
+}

contracts/optimism/connectors/aave/aave-rewards/v3/interface.sol

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+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+interface AaveIncentivesInterface {
+	function claimRewards(
+		address[] calldata assets,
+		uint256 amount,
+		address to,
+		address reward
+	) external returns (uint256);
+
+	function claimAllRewards(address[] calldata assets, address to)
+		external
+		returns (address[] memory rewardsList, uint256[] memory claimedAmounts);
+}

contracts/optimism/connectors/aave/aave-rewards/v3/main.sol

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+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+/**
+ * @title Aave v3 Rewards.
+ * @dev Claim Aave v3 rewards.
+ */
+
+import { TokenInterface } from "../../../../common/interfaces.sol";
+import { Stores } from "../../../../common/stores.sol";
+import { Helpers } from "./helpers.sol";
+import { Events } from "./events.sol";
+
+abstract contract IncentivesResolver is Helpers, Events {
+	/**
+	 * @dev Claim Pending Rewards.
+	 * @notice Claim Pending Rewards from Aave v3 incentives contract.
+	 * @param assets The list of assets supplied and borrowed.
+	 * @param amt The amount of reward to claim. (uint(-1) for max)
+	 * @param reward The address of reward token to claim.
+	 * @param getId ID to retrieve amt.
+	 * @param setId ID stores the amount of rewards claimed.
+	 */
+	function claim(
+		address[] calldata assets,
+		uint256 amt,
+		address reward,
+		uint256 getId,
+		uint256 setId
+	)
+		external
+		payable
+		returns (string memory _eventName, bytes memory _eventParam)
+	{
+		uint256 _amt = getUint(getId, amt);
+
+		require(assets.length > 0, "invalid-assets");
+
+		_amt = incentives.claimRewards(assets, _amt, address(this), reward);
+
+		TokenInterface weth = TokenInterface(wethAddr);
+		uint256 wethAmount = weth.balanceOf(address(this));
+		convertWethToEth(wethAmount > 0, weth, wethAmount);
+
+		setUint(setId, _amt);
+
+		_eventName = "LogClaimed(address[],uint256,uint256,uint256)";
+		_eventParam = abi.encode(assets, _amt, getId, setId);
+	}
+
+	/**
+	 * @dev Claim All Pending Rewards.
+	 * @notice Claim All Pending Rewards from Aave v3 incentives contract.
+	 * @param assets The list of assets supplied and borrowed.
+	 */
+	function claimAll(address[] calldata assets)
+		external
+		payable
+		returns (string memory _eventName, bytes memory _eventParam)
+	{
+		require(assets.length > 0, "invalid-assets");
+		uint256[] memory _amts = new uint256[](assets.length);
+		address[] memory _rewards = new address[](assets.length);
+
+		(_rewards, _amts) = incentives.claimAllRewards(assets, address(this));
+
+		TokenInterface weth = TokenInterface(wethAddr);
+		uint256 wethAmount = weth.balanceOf(address(this));
+		convertWethToEth(wethAmount > 0, weth, wethAmount);
+
+		_eventName = "LogAllClaimed(address[],address[],uint256[])";
+		_eventParam = abi.encode(assets, _rewards, _amts);
+	}
+}
+
+contract ConnectV3AaveIncentivesOptimism is IncentivesResolver {
+	string public constant name = "Aave-V3-Incentives-v1";
+}