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https://github.com/Instadapp/dsa-connectors-2.0.git
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108 lines
3.1 KiB
Solidity
108 lines
3.1 KiB
Solidity
//SPDX-License-Identifier: MIT
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pragma solidity ^0.8.2;
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/**
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* @title Fluid.
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* @dev Lending & Borrowing.
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*/
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import {Stores} from "../../common/stores.sol";
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import {TokenInterface} from "../../common/interfaces.sol";
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import {Events} from "./events.sol";
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import {IVault} from "./interface.sol";
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abstract contract FluidConnector is Events, Stores {
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/**
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* @dev Returns Eth address
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*/
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function getEthAddr() internal pure returns (address) {
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return 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
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}
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/**
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* @dev Deposit, borrow, payback and withdraw asset from the vault.
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* @notice Single function which handles supply, withdraw, borrow & payback
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* @param vaultAddress_ Vault address.
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* @param nftId_ NFT ID for interaction. If 0 then create new NFT/position.
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* @param newCol_ New collateral. If positive then deposit, if negative then withdraw, if 0 then do nothing
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* @param newDebt_ New debt. If positive then borrow, if negative then payback, if 0 then do nothing
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* @param to_ Address where withdraw or borrow should go. If address(0) then msg.sender
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* @param getId_ ID to retrieve NFT ID.
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* @param setId_ ID stores the NFT ID generated.
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*/
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function operate(
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address vaultAddress_,
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uint256 nftId_,
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int256 newCol_,
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int256 newDebt_,
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address to_,
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uint256 getId_,
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uint256 setId_
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)
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external
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payable
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returns (string memory _eventName, bytes memory _eventParam)
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{
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// todo: add max value
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nftId_ = getUint(getId_, nftId_);
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IVault vault_ = IVault(vaultAddress_);
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IVault.ConstantViews memory vaultDetails_ = vault_.constantsView();
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uint256 colEthAmount_;
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uint256 debtEthAmount_;
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if (newCol_ == type(int256).max) { // +ve max value
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}
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if (newCol_ > 0) {
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if (vaultDetails_.supplyToken == getEthAddr()) {
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colEthAmount_ = uint256(newCol_);
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} else {
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TokenInterface(vaultDetails_.supplyToken).approve(
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vaultAddress_,
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uint256(newCol_)
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);
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colEthAmount_ = 0;
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}
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}
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if (newDebt_ < 0) {
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if (vaultDetails_.borrowToken == getEthAddr()) {
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debtEthAmount_ = uint256(-1 * newDebt_);
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} else {
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TokenInterface(vaultDetails_.borrowToken).approve(
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vaultAddress_,
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uint256(-1 * newDebt_)
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);
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debtEthAmount_ = 0;
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}
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}
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(nftId_, newCol_, newDebt_) = vault_.operate{
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value: colEthAmount_ + debtEthAmount_
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}(nftId_, newCol_, newDebt_, to_);
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setUint(setId_, nftId_);
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_eventName = "LogOperate(address,uint256,int256,int256,address,uint256,uint256)";
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_eventParam = abi.encode(
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vaultAddress_,
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nftId_,
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newCol_,
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newDebt_,
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to_,
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getId_,
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setId_
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);
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}
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}
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contract ConnectV2Fluid is FluidConnector {
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string public constant name = "Fluid-v1.0";
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}
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