Merge pull request #255 from Instadapp/aave-v2-automation

aave v2 automation connnector

contracts/mainnet/connectors/aave/automation-v2/events.sol

@@ -0,0 +1,11 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
+
+contract Events {
+	event LogCancelAutomation();
+
+	event LogSubmitAutomation(uint256 safeHF, uint256 thresholdHF);
+
+	event LogUpdateAutomation(uint256 safeHF, uint256 thresholdHF);
+}

contracts/mainnet/connectors/aave/automation-v2/interfaces.sol

@@ -0,0 +1,25 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
+
+interface InstaAaveAutomation {
+	function submitAutomationRequest(
+		uint256 safeHealthFactor,
+		uint256 thresholdHealthFactor
+	) external;
+
+	function cancelAutomationRequest() external;
+
+	function updateAutomation(
+		uint256 safeHealthFactor,
+		uint256 thresholdHealthFactor
+	) external;
+}
+
+interface AccountInterface {
+	function enable(address) external;
+
+	function disable(address) external;
+
+	function isAuth(address) external view returns (bool);
+}

contracts/mainnet/connectors/aave/automation-v2/main.sol

@@ -0,0 +1,84 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
+
+/**
+ * @title InstaAutomation
+ * @dev Insta-Aave-v2-Automation
+ */
+
+import "./events.sol";
+import "./interfaces.sol";
+
+abstract contract Resolver is Events {
+	InstaAaveAutomation internal immutable automation =
+		InstaAaveAutomation(0x08c1c01be430C9381AD2794412C3E940254CD97c); // production
+
+	function submitAutomationRequest(
+		uint256 safeHealthFactor,
+		uint256 thresholdHealthFactor
+	)
+		external
+		payable
+		returns (string memory _eventName, bytes memory _eventParam)
+	{
+		bool isAuth = AccountInterface(address(this)).isAuth(
+			address(automation)
+		);
+
+		if (!isAuth)
+			AccountInterface(address(this)).enable(address(automation));
+
+		automation.submitAutomationRequest(
+			safeHealthFactor,
+			thresholdHealthFactor
+		);
+
+		(_eventName, _eventParam) = (
+			"LogSubmitAutomation(uint256,uint256)",
+			abi.encode(safeHealthFactor, thresholdHealthFactor)
+		);
+	}
+
+	function cancelAutomationRequest()
+		external
+		payable
+		returns (string memory _eventName, bytes memory _eventParam)
+	{
+		automation.cancelAutomationRequest();
+
+		bool isAuth = AccountInterface(address(this)).isAuth(
+			address(automation)
+		);
+
+		if (isAuth)
+			AccountInterface(address(this)).disable(address(automation));
+
+		(_eventName, _eventParam) = ("LogCancelAutomation()", "0x");
+	}
+
+	function updateAutomationRequest(
+		uint256 safeHealthFactor,
+		uint256 thresholdHealthFactor
+	)
+		external
+		payable
+		returns (string memory _eventName, bytes memory _eventParam)
+	{
+		automation.cancelAutomationRequest();
+
+		automation.submitAutomationRequest(
+			safeHealthFactor,
+			thresholdHealthFactor
+		);
+
+		(_eventName, _eventParam) = (
+			"LogUpdateAutomation(uint256,uint256)",
+			abi.encode(safeHealthFactor, thresholdHealthFactor)
+		);
+	}
+}
+
+contract ConnectV2InstaAaveV2Automation is Resolver {
+	string public constant name = "Insta-Aave-V2-Automation-v1";
+}