From 1f862ac4bf12678d359249e96aa4953584a7d08d Mon Sep 17 00:00:00 2001
From: Richa-iitr <richa@cs.iitr.ac.in>
Date: Sun, 2 Oct 2022 02:41:44 +0530
Subject: [PATCH] added contracts

---
 .../connectors/instaLite_v2/events.sol        | 14 ++++
 .../connectors/instaLite_v2/interface.sol     | 16 ++++
 .../mainnet/connectors/instaLite_v2/main.sol  | 77 +++++++++++++++++++
 3 files changed, 107 insertions(+)
 create mode 100644 contracts/mainnet/connectors/instaLite_v2/events.sol
 create mode 100644 contracts/mainnet/connectors/instaLite_v2/interface.sol
 create mode 100644 contracts/mainnet/connectors/instaLite_v2/main.sol

diff --git a/contracts/mainnet/connectors/instaLite_v2/events.sol b/contracts/mainnet/connectors/instaLite_v2/events.sol
new file mode 100644
index 00000000..5234807e
--- /dev/null
+++ b/contracts/mainnet/connectors/instaLite_v2/events.sol
@@ -0,0 +1,14 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+contract Events {
+	event LogImport(
+		address flashTkn,
+		uint256 flashAmt,
+		uint256 route,
+		uint256 stEthAmt,
+		uint256 wethAmt,
+		uint256[] getIds,
+		uint256[] setIds
+	);
+}
diff --git a/contracts/mainnet/connectors/instaLite_v2/interface.sol b/contracts/mainnet/connectors/instaLite_v2/interface.sol
new file mode 100644
index 00000000..b85bd2c6
--- /dev/null
+++ b/contracts/mainnet/connectors/instaLite_v2/interface.sol
@@ -0,0 +1,16 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+interface IInstaLite {
+	function token() external view returns (address);
+
+	function importPosition(
+		address flashTkn_,
+		uint256 flashAmt_,
+		uint256 route_,
+		uint256 stEthAmt_,
+		uint256 wethAmt_,
+		uint256 getId,
+		uint256 setId
+	) external;
+}
diff --git a/contracts/mainnet/connectors/instaLite_v2/main.sol b/contracts/mainnet/connectors/instaLite_v2/main.sol
new file mode 100644
index 00000000..9bebfa55
--- /dev/null
+++ b/contracts/mainnet/connectors/instaLite_v2/main.sol
@@ -0,0 +1,77 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+/**
+ * @title InstaLite Connector
+ * @dev Import Position
+ */
+
+import { TokenInterface } from "../../common/interfaces.sol";
+import { Basic } from "../../common/basic.sol";
+import { Events } from "./events.sol";
+import { IInstaLite } from "./interface.sol";
+import "@openzeppelin/contracts/utils/Address.sol";
+
+abstract contract InstaLiteConnector is Events, Basic {
+	TokenInterface internal constant astethToken =
+		TokenInterface(0x1982b2F5814301d4e9a8b0201555376e62F82428);
+	TokenInterface internal constant stethToken =
+		TokenInterface(0xae7ab96520DE3A18E5e111B5EaAb095312D7fE84);
+	address internal constant ethVaultAddr =
+		0xc383a3833A87009fD9597F8184979AF5eDFad019;
+
+	/**
+	 * @dev Supply ETH/ERC20
+	 * @notice Supply a token into Instalite.
+	 * @param flashTkn_ Address of flash token.
+	 * @param flashAmt_ Flash loan amount.
+	 * @param route_ Flash loan route.
+	 * @param stEthAmt_ Amount of astEthToken to be imported.
+	 * @param wethAmt_ Amount of weth borrows to be imported. 
+	 * @param getIds IDs to retrieve amt.
+	 * @param setIds array of IDs to store the amount of tokens deposited.
+	 */
+	function importPosition(
+		address flashTkn_,
+		uint256 flashAmt_,
+		uint256 route_,
+		uint256 stEthAmt_,
+		uint256 wethAmt_,
+		uint256[] memory getIds,
+		uint256[] memory setIds
+	) external returns (string memory eventName_, bytes memory eventParam_) {
+		uint256 stEthAmt_ = getUint(getIds[0], stEthAmt_);
+		uint256 wethAmt_ = getUint(getIds[1], wethAmt_);
+		stEthAmt_ = stEthAmt_ == type(uint256).max
+			? astethToken.balanceOf(msg.sender)
+			: stEthAmt_;
+
+		astethToken.approve(ethVaultAddr, stEthAmt_);
+
+		bytes memory callData_ = abi.encodeWithSignature(
+			"importPosition(address,uint256,uint256,address,uint256,uint256)",
+			flashTkn_,
+			flashAmt_,
+			route_,
+			address(this),
+			stEthAmt_,
+			wethAmt_
+		);
+
+		Address.functionDelegateCall(
+			address(ethVaultAddr),
+			callData_,
+			"import-failed"
+		);
+
+		setUint(setIds[0], stEthAmt_);
+		setUint(setIds[1], wethAmt_);
+
+		eventName_ = "LogImport(address,uint256,uint256,uint256,uint256,uint256[],uint256[])";
+		eventParam_ = abi.encode(flashTkn_,flashAmt_,route_,stEthAmt_,wethAmt_,getIds,setIds);
+	}
+}
+
+contract ConnectV2InstaLiteV2 is InstaLiteConnector {
+	string public constant name = "InstaLite-v2.0";
+}