mirror of
https://github.com/Instadapp/dsa-connectors.git
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349 lines
14 KiB
Solidity
349 lines
14 KiB
Solidity
//SPDX-License-Identifier: MIT
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pragma solidity ^0.7.0;
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pragma experimental ABIEncoderV2;
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/**
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* @title B.Compound.
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* @dev Lending & Borrowing.
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*/
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import { TokenInterface } from "../../../common/interfaces.sol";
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import { Stores } from "../../../common/stores.sol";
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import { Helpers } from "./helpers.sol";
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import { Events } from "./events.sol";
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import { CETHInterface, CTokenInterface } from "./interface.sol";
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abstract contract BCompoundResolver is Events, Helpers {
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/**
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* @dev Deposit ETH/ERC20_Token.
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* @notice Deposit a token to Compound for lending / collaterization.
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* @param token The address of the token to deposit. (For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
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* @param cToken The address of the corresponding cToken.
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* @param amt The amount of the token to deposit. (For max: `uint256(-1)`)
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* @param getId ID to retrieve amt.
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* @param setId ID stores the amount of tokens deposited.
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*/
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function depositRaw(
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address token,
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address cToken,
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uint256 amt,
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uint256 getId,
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uint256 setId
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) public payable returns (string memory _eventName, bytes memory _eventParam) {
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uint _amt = getUint(getId, amt);
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require(token != address(0) && cToken != address(0), "invalid token/ctoken address");
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if (token == ethAddr) {
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_amt = _amt == uint(-1) ? address(this).balance : _amt;
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CETHInterface(cToken).mint{value: _amt}();
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} else {
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TokenInterface tokenContract = TokenInterface(token);
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_amt = _amt == uint(-1) ? tokenContract.balanceOf(address(this)) : _amt;
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approve(tokenContract, cToken, _amt);
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require(CTokenInterface(cToken).mint(_amt) == 0, "deposit-failed");
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}
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setUint(setId, _amt);
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_eventName = "LogDeposit(address,address,uint256,uint256,uint256)";
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_eventParam = abi.encode(token, cToken, _amt, getId, setId);
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}
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/**
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* @dev Deposit ETH/ERC20_Token using the Mapping.
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* @notice Deposit a token to Compound for lending / collaterization.
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* @param tokenId The token id of the token to deposit.(For eg: ETH-A)
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* @param amt The amount of the token to deposit. (For max: `uint256(-1)`)
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* @param getId ID to retrieve amt.
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* @param setId ID stores the amount of tokens deposited.
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*/
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function deposit(
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string calldata tokenId,
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uint256 amt,
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uint256 getId,
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uint256 setId
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) external payable returns (string memory _eventName, bytes memory _eventParam) {
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(address token, address cToken) = getMapping(tokenId);
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(_eventName, _eventParam) = depositRaw(token, cToken, amt, getId, setId);
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}
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/**
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* @dev Withdraw ETH/ERC20_Token.
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* @notice Withdraw deposited token from Compound
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* @param token The address of the token to withdraw. (For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
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* @param cToken The address of the corresponding cToken.
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* @param amt The amount of the token to withdraw. (For max: `uint256(-1)`)
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* @param getId ID to retrieve amt.
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* @param setId ID stores the amount of tokens withdrawn.
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*/
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function withdrawRaw(
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address token,
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address cToken,
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uint256 amt,
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uint256 getId,
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uint256 setId
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) public payable returns (string memory _eventName, bytes memory _eventParam) {
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uint _amt = getUint(getId, amt);
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require(token != address(0) && cToken != address(0), "invalid token/ctoken address");
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CTokenInterface cTokenContract = CTokenInterface(cToken);
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if (_amt == uint(-1)) {
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TokenInterface tokenContract = TokenInterface(token);
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uint initialBal = token == ethAddr ? address(this).balance : tokenContract.balanceOf(address(this));
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require(cTokenContract.redeem(cTokenContract.balanceOf(address(this))) == 0, "full-withdraw-failed");
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uint finalBal = token == ethAddr ? address(this).balance : tokenContract.balanceOf(address(this));
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_amt = finalBal - initialBal;
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} else {
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require(cTokenContract.redeemUnderlying(_amt) == 0, "withdraw-failed");
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}
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setUint(setId, _amt);
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_eventName = "LogWithdraw(address,address,uint256,uint256,uint256)";
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_eventParam = abi.encode(token, cToken, _amt, getId, setId);
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}
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/**
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* @dev Withdraw ETH/ERC20_Token using the Mapping.
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* @notice Withdraw deposited token from Compound
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* @param tokenId The token id of the token to withdraw.(For eg: ETH-A)
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* @param amt The amount of the token to withdraw. (For max: `uint256(-1)`)
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* @param getId ID to retrieve amt.
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* @param setId ID stores the amount of tokens withdrawn.
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*/
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function withdraw(
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string calldata tokenId,
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uint256 amt,
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uint256 getId,
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uint256 setId
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) external payable returns (string memory _eventName, bytes memory _eventParam) {
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(address token, address cToken) = getMapping(tokenId);
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(_eventName, _eventParam) = withdrawRaw(token, cToken, amt, getId, setId);
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}
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/**
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* @dev Borrow ETH/ERC20_Token.
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* @notice Borrow a token using Compound
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* @param token The address of the token to borrow. (For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
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* @param cToken The address of the corresponding cToken.
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* @param amt The amount of the token to borrow.
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* @param getId ID to retrieve amt.
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* @param setId ID stores the amount of tokens borrowed.
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*/
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function borrowRaw(
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address token,
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address cToken,
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uint256 amt,
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uint256 getId,
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uint256 setId
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) public payable returns (string memory _eventName, bytes memory _eventParam) {
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uint _amt = getUint(getId, amt);
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require(token != address(0) && cToken != address(0), "invalid token/ctoken address");
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require(CTokenInterface(cToken).borrow(_amt) == 0, "borrow-failed");
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setUint(setId, _amt);
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_eventName = "LogBorrow(address,address,uint256,uint256,uint256)";
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_eventParam = abi.encode(token, cToken, _amt, getId, setId);
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}
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/**
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* @dev Borrow ETH/ERC20_Token using the Mapping.
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* @notice Borrow a token using Compound
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* @param tokenId The token id of the token to borrow.(For eg: DAI-A)
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* @param amt The amount of the token to borrow.
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* @param getId ID to retrieve amt.
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* @param setId ID stores the amount of tokens borrowed.
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*/
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function borrow(
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string calldata tokenId,
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uint256 amt,
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uint256 getId,
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uint256 setId
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) external payable returns (string memory _eventName, bytes memory _eventParam) {
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(address token, address cToken) = getMapping(tokenId);
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(_eventName, _eventParam) = borrowRaw(token, cToken, amt, getId, setId);
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}
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/**
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* @dev Payback borrowed ETH/ERC20_Token.
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* @notice Payback debt owed.
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* @param token The address of the token to payback. (For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
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* @param cToken The address of the corresponding cToken.
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* @param amt The amount of the token to payback. (For max: `uint256(-1)`)
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* @param getId ID to retrieve amt.
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* @param setId ID stores the amount of tokens paid back.
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*/
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function paybackRaw(
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address token,
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address cToken,
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uint256 amt,
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uint256 getId,
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uint256 setId
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) public payable returns (string memory _eventName, bytes memory _eventParam) {
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uint _amt = getUint(getId, amt);
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require(token != address(0) && cToken != address(0), "invalid token/ctoken address");
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CTokenInterface cTokenContract = CTokenInterface(cToken);
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_amt = _amt == uint(-1) ? cTokenContract.borrowBalanceCurrent(address(this)) : _amt;
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if (token == ethAddr) {
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require(address(this).balance >= _amt, "not-enough-eth");
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CETHInterface(cToken).repayBorrow{value: _amt}();
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} else {
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TokenInterface tokenContract = TokenInterface(token);
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require(tokenContract.balanceOf(address(this)) >= _amt, "not-enough-token");
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approve(tokenContract, cToken, _amt);
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require(cTokenContract.repayBorrow(_amt) == 0, "repay-failed.");
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}
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setUint(setId, _amt);
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_eventName = "LogPayback(address,address,uint256,uint256,uint256)";
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_eventParam = abi.encode(token, cToken, _amt, getId, setId);
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}
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/**
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* @dev Payback borrowed ETH/ERC20_Token using the Mapping.
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* @notice Payback debt owed.
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* @param tokenId The token id of the token to payback.(For eg: COMP-A)
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* @param amt The amount of the token to payback. (For max: `uint256(-1)`)
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* @param getId ID to retrieve amt.
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* @param setId ID stores the amount of tokens paid back.
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*/
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function payback(
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string calldata tokenId,
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uint256 amt,
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uint256 getId,
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uint256 setId
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) external payable returns (string memory _eventName, bytes memory _eventParam) {
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(address token, address cToken) = getMapping(tokenId);
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(_eventName, _eventParam) = paybackRaw(token, cToken, amt, getId, setId);
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}
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/**
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* @dev Deposit ETH/ERC20_Token.
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* @notice Same as depositRaw. The only difference is this method stores cToken amount in set ID.
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* @param token The address of the token to deposit. (For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
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* @param cToken The address of the corresponding cToken.
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* @param amt The amount of the token to deposit. (For max: `uint256(-1)`)
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* @param getId ID to retrieve amt.
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* @param setId ID stores the amount of cTokens received.
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*/
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function depositCTokenRaw(
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address token,
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address cToken,
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uint256 amt,
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uint256 getId,
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uint256 setId
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) public payable returns (string memory _eventName, bytes memory _eventParam) {
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uint _amt = getUint(getId, amt);
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require(token != address(0) && cToken != address(0), "invalid token/ctoken address");
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CTokenInterface ctokenContract = CTokenInterface(cToken);
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uint initialBal = ctokenContract.balanceOf(address(this));
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if (token == ethAddr) {
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_amt = _amt == uint(-1) ? address(this).balance : _amt;
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CETHInterface(cToken).mint{value: _amt}();
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} else {
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TokenInterface tokenContract = TokenInterface(token);
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_amt = _amt == uint(-1) ? tokenContract.balanceOf(address(this)) : _amt;
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approve(tokenContract, cToken, _amt);
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require(ctokenContract.mint(_amt) == 0, "deposit-ctoken-failed.");
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}
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uint _cAmt;
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{
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uint finalBal = ctokenContract.balanceOf(address(this));
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_cAmt = sub(finalBal, initialBal);
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setUint(setId, _cAmt);
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}
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_eventName = "LogDepositCToken(address,address,uint256,uint256,uint256,uint256)";
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_eventParam = abi.encode(token, cToken, _amt, _cAmt, getId, setId);
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}
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/**
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* @dev Deposit ETH/ERC20_Token using the Mapping.
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* @notice Same as deposit. The only difference is this method stores cToken amount in set ID.
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* @param tokenId The token id of the token to depositCToken.(For eg: DAI-A)
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* @param amt The amount of the token to deposit. (For max: `uint256(-1)`)
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* @param getId ID to retrieve amt.
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* @param setId ID stores the amount of cTokens received.
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*/
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function depositCToken(
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string calldata tokenId,
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uint256 amt,
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uint256 getId,
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uint256 setId
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) external payable returns (string memory _eventName, bytes memory _eventParam) {
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(address token, address cToken) = getMapping(tokenId);
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(_eventName, _eventParam) = depositCTokenRaw(token, cToken, amt, getId, setId);
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}
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/**
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* @dev Withdraw CETH/CERC20_Token using cToken Amt.
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* @notice Same as withdrawRaw. The only difference is this method fetch cToken amount in get ID.
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* @param token The address of the token to withdraw. (For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
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* @param cToken The address of the corresponding cToken.
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* @param cTokenAmt The amount of cTokens to withdraw
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* @param getId ID to retrieve cTokenAmt
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* @param setId ID stores the amount of tokens withdrawn.
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*/
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function withdrawCTokenRaw(
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address token,
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address cToken,
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uint cTokenAmt,
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uint getId,
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uint setId
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) public payable returns (string memory _eventName, bytes memory _eventParam) {
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uint _cAmt = getUint(getId, cTokenAmt);
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require(token != address(0) && cToken != address(0), "invalid token/ctoken address");
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CTokenInterface cTokenContract = CTokenInterface(cToken);
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TokenInterface tokenContract = TokenInterface(token);
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_cAmt = _cAmt == uint(-1) ? cTokenContract.balanceOf(address(this)) : _cAmt;
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uint withdrawAmt;
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{
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uint initialBal = token != ethAddr ? tokenContract.balanceOf(address(this)) : address(this).balance;
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require(cTokenContract.redeem(_cAmt) == 0, "redeem-failed");
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uint finalBal = token != ethAddr ? tokenContract.balanceOf(address(this)) : address(this).balance;
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withdrawAmt = sub(finalBal, initialBal);
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}
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setUint(setId, withdrawAmt);
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_eventName = "LogWithdrawCToken(address,address,uint256,uint256,uint256,uint256)";
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_eventParam = abi.encode(token, cToken, withdrawAmt, _cAmt, getId, setId);
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}
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/**
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* @dev Withdraw CETH/CERC20_Token using cToken Amt & the Mapping.
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* @notice Same as withdraw. The only difference is this method fetch cToken amount in get ID.
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* @param tokenId The token id of the token to withdraw CToken.(For eg: ETH-A)
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* @param cTokenAmt The amount of cTokens to withdraw
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* @param getId ID to retrieve cTokenAmt
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* @param setId ID stores the amount of tokens withdrawn.
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*/
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function withdrawCToken(
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string calldata tokenId,
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uint cTokenAmt,
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uint getId,
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uint setId
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) external payable returns (string memory _eventName, bytes memory _eventParam) {
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(address token, address cToken) = getMapping(tokenId);
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(_eventName, _eventParam) = withdrawCTokenRaw(token, cToken, cTokenAmt, getId, setId);
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}
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}
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contract ConnectV2BCompound is BCompoundResolver {
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string public name = "B.Compound-v1.0";
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}
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