Merge pull request #205 from Instadapp/instalite

InstaLite Connector

contracts/mainnet/connectors/instaLite/events.sol

@@ -0,0 +1,27 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+contract Events {
+	event LogSupply(
+		address vaultAddr,
+		address token,
+		uint256 vTokenAmt,
+		uint256 amt,
+		uint256 getId,
+		uint256[] setIds
+	);
+	event LogWithdraw(
+		address vaultAddr,
+		uint256 amt,
+		uint256 vTokenAmt,
+		uint256 getId,
+		uint256[] setIds
+	);
+
+	event LogDeleverage(
+		address vaultAddr,
+		uint256 amt,
+		uint256 getId,
+		uint256 setId
+	);
+}

contracts/mainnet/connectors/instaLite/interface.sol

@@ -0,0 +1,18 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+interface IInstaLite {
+
+	function supplyEth(address to_) external payable returns (uint256);
+
+	function supply(
+		address token_,
+		uint256 amount_,
+		address to_
+	) external returns (uint256);
+
+	function withdraw(uint256 amount_, address to_) external returns (uint256);
+
+	function deleverage(uint amt_) external;
+
+}

contracts/mainnet/connectors/instaLite/main.sol

@@ -0,0 +1,139 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.7.0;
+
+/**
+ * @title InstaLite Connector
+ * @dev Supply, Withdraw & Deleverage
+ */
+
+import { TokenInterface } from "../../common/interfaces.sol";
+import { Basic } from "../../common/basic.sol";
+import { Events } from "./events.sol";
+import { IInstaLite } from "./interface.sol";
+
+abstract contract InstaLiteConnector is Events, Basic {
+
+	TokenInterface internal constant astethToken = TokenInterface(0x1982b2F5814301d4e9a8b0201555376e62F82428);
+
+	/**
+	 * @dev Supply ETH/ERC20
+	 * @notice Supply a token into Instalite.
+	 * @param vaultAddr Address of instaLite Contract.
+	 * @param token The address of the token to be supplied. (For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+	 * @param amt The amount of token to be supplied. (For max: `uint256(-1)`)
+	 * @param getId ID to retrieve amt.
+	 * @param setIds array of IDs to store the amount of tokens deposited.
+	 */
+	function supply(
+		address vaultAddr,
+		address token,
+		uint256 amt,
+		uint256 getId,
+		uint256[] memory setIds
+	)
+		public
+		payable
+		returns (string memory _eventName, bytes memory _eventParam)
+	{
+		uint256 _amt = getUint(getId, amt);
+		bool isEth = token == ethAddr;
+		uint256 vTokenAmt;
+
+		if (isEth) {
+			_amt = _amt == uint256(-1) ? address(this).balance : _amt;
+			vTokenAmt = IInstaLite(vaultAddr).supplyEth{ value: amt }(address(this));
+		} else {
+			TokenInterface tokenContract = TokenInterface(token);
+
+			_amt = _amt == uint256(-1)
+				? tokenContract.balanceOf(address(this))
+				: _amt;
+
+			approve(tokenContract, vaultAddr, _amt);
+			vTokenAmt = IInstaLite(vaultAddr).supply(token, _amt, address(this));
+		}
+
+		setUint(setIds[0], _amt);
+		setUint(setIds[1], vTokenAmt);
+
+		_eventName = "LogSupply(address,address,uint256,uint256,uint256,uint256[])";
+		_eventParam = abi.encode(
+			vaultAddr,
+			token,
+			vTokenAmt,
+			_amt,
+			getId,
+			setIds
+		);
+	}
+
+	/**
+	 * @dev Withdraw ETH/ERC20
+	 * @notice Withdraw deposited tokens from Instalite.
+	 * @param vaultAddr Address of vaultAddress Contract.
+	 * @param amt The amount of the token to withdraw.
+	 * @param getId ID to retrieve amt.
+	 * @param setIds array of IDs to stores the amount of tokens withdrawn.
+	 */
+	function withdraw(
+		address vaultAddr,
+		uint256 amt,
+		uint256 getId,
+		uint256[] memory setIds
+	)
+		external
+		payable
+		returns (string memory _eventName, bytes memory _eventParam)
+	{
+		uint256 _amt = getUint(getId, amt);
+
+		uint256 vTokenAmt =  IInstaLite(vaultAddr).withdraw(_amt, address(this));
+
+		setUint(setIds[0], _amt);
+		setUint(setIds[1], vTokenAmt);
+
+		_eventName = "LogWithdraw(address,uint256,uint256,uint256,uint256[])";
+		_eventParam = abi.encode(vaultAddr, _amt, vTokenAmt, getId, setIds);
+	}
+
+	/**
+	 * @dev Deleverage vault. Pays back ETH debt and get stETH collateral. 1:1 swap of ETH to stETH
+	 * @notice Deleverage Instalite vault.
+	 * @param vaultAddr Address of vaultAddress Contract.
+	 * @param amt The amount of the token to deleverage.
+	 * @param getId ID to retrieve amt.
+	 * @param setId ID to set amt.
+	 */
+	function deleverage(
+		address vaultAddr,
+		uint256 amt,
+		uint256 getId,
+		uint256 setId
+	)
+		external
+		payable
+		returns (string memory _eventName, bytes memory _eventParam)
+	{
+		uint256 _amt = getUint(getId, amt);
+
+		uint initialBal = astethToken.balanceOf(address(this));
+
+		approve(TokenInterface(wethAddr), vaultAddr, _amt);
+
+		IInstaLite(vaultAddr).deleverage(_amt);
+
+		uint finalBal = astethToken.balanceOf(address(this));
+
+		require(amt <= (finalBal - initialBal), "lack-of-steth");
+
+		setUint(setId, _amt);
+
+		_eventName = "LogDeleverage(address,uint256,uint256,uint256)";
+		_eventParam = abi.encode(vaultAddr, _amt, getId, setId);
+	}
+
+}
+
+contract ConnectV2InstaLite is InstaLiteConnector {
+	string public constant name = "InstaLite-v1";
+}

test/mainnet/instaLite/instaLite.test.ts

@@ -0,0 +1,101 @@
+import hre from "hardhat";
+import { expect } from "chai";
+const { ethers } = hre; //check
+import { BigNumber } from "bignumber.js";
+import { deployAndEnableConnector } from "../../../scripts/tests/deployAndEnableConnector";
+import { buildDSAv2 } from "../../../scripts/tests/buildDSAv2";
+import { encodeSpells } from "../../../scripts/tests/encodeSpells";
+import { getMasterSigner } from "../../../scripts/tests/getMasterSigner";
+import { addresses } from "../../../scripts/tests/mainnet/addresses";
+import { addLiquidity } from "../../../scripts/tests/addLiquidity";
+import { abis } from "../../../scripts/constant/abis";
+import { ConnectV2InstaLiteVault1__factory } from "../../../typechain";
+// import lido_abi from "./abi.json";
+import type { Signer, Contract } from "ethers";
+import { parseEther } from "ethers/lib/utils";
+
+describe("instaLite", function () {
+  const connectorName = "instaLite-test";
+
+  let dsaWallet0: Contract;
+  let wallet0: Signer, wallet1: Signer;
+  let masterSigner: Signer;
+  let instaConnectorsV2: Contract;
+  let connector: Contract;
+
+  before(async () => {
+    // await hre.network.provider.request({
+    //   method: "hardhat_reset",
+    //   params: [
+    //     {
+    //       forking: {
+    //         // @ts-ignore
+    //         jsonRpcUrl: hre.config.networks.hardhat.forking.url,
+    //         blockNumber: 14334859
+    //       },
+    //     },
+    //   ],
+    // });
+    [wallet0, wallet1] = await ethers.getSigners();
+    masterSigner = await getMasterSigner();
+    instaConnectorsV2 = await ethers.getContractAt(abis.core.connectorsV2, addresses.core.connectorsV2);
+    connector = await deployAndEnableConnector({
+      connectorName,
+      contractArtifact: ConnectV2InstaLiteVault1__factory,
+      signer: masterSigner,
+      connectors: instaConnectorsV2
+    });
+    console.log("Connector address", connector.address);
+  });
+
+  it("Should have contracts deployed.", async function () {
+    expect(!!instaConnectorsV2.address).to.be.true;
+    expect(!!connector.address).to.be.true;
+    expect(!!(await masterSigner.getAddress())).to.be.true;
+  });
+
+  describe("DSA wallet setup", function () {
+    it("Should build DSA v2", async function () {
+      dsaWallet0 = await buildDSAv2(await wallet0.getAddress());
+      expect(!!dsaWallet0.address).to.be.true;
+    });
+
+    it("Deposit ETH  into DSA wallet", async function () {
+      await wallet0.sendTransaction({
+        to: dsaWallet0.address,
+        value: ethers.utils.parseEther("10")
+      });
+      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.be.gte(ethers.utils.parseEther("10"));
+    });
+  });
+
+  describe("Main", function () {
+    it("should deposit the eth", async function () {
+      const _amt = ethers.utils.parseEther("5");
+      const ethAddr = "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee";
+      const spells = [
+        {
+          connector: connectorName,
+          method: "supply",
+          args: ["0xc383a3833a87009fd9597f8184979af5edfad019", ethAddr, _amt, 0, [0, 0]]
+        }
+      ];
+      const tx = await dsaWallet0.connect(wallet0).cast(...encodeSpells(spells), await wallet1.getAddress());
+      const receipt = await tx.wait();
+      expect(await ethers.provider.getBalance(dsaWallet0.address)).to.eq(parseEther("5"));
+    });
+
+    it("should withdraw", async function () {
+      const _amt = ethers.utils.parseEther("1");
+      const spells = [
+        {
+          connector: connectorName,
+          method: "withdraw",
+          args: ["0xc383a3833a87009fd9597f8184979af5edfad019", _amt, 0, [0, 0]]
+        }
+      ];
+      const tx = await dsaWallet0.connect(wallet0).cast(...encodeSpells(spells), await wallet1.getAddress());
+      const receipt = await tx.wait();
+    });
+  });
+});