mirror of
https://github.com/Instadapp/dsa-connectors-old.git
synced 2024-07-29 22:47:46 +00:00
[WIP] Maker helper functions
This commit is contained in:
Mubaris NK
parent
10fe01df80
commit
584f6f65ea
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@ -46,6 +46,7 @@ interface CETHInterface {
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interface InstaMapping {
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function cTokenMapping(address) external view returns (address);
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function gemJoinMapping(bytes32) external view returns (address);
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}
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interface ComptrollerInterface {
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@ -175,18 +176,76 @@ interface ATokenV2Interface {
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}
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// End Aave v2 Helpers
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// MakerDAO Helpers
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interface ManagerLike {
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function cdpCan(address, uint, address) external view returns (uint);
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function ilks(uint) external view returns (bytes32);
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function last(address) external view returns (uint);
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function count(address) external view returns (uint);
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function owns(uint) external view returns (address);
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function urns(uint) external view returns (address);
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function vat() external view returns (address);
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function open(bytes32, address) external returns (uint);
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function give(uint, address) external;
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function frob(uint, int, int) external;
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function flux(uint, address, uint) external;
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function move(uint, address, uint) external;
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}
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interface VatLike {
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function can(address, address) external view returns (uint);
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function ilks(bytes32) external view returns (uint, uint, uint, uint, uint);
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function dai(address) external view returns (uint);
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function urns(bytes32, address) external view returns (uint, uint);
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function frob(
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bytes32,
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address,
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address,
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address,
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int,
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int
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) external;
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function hope(address) external;
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function move(address, address, uint) external;
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function gem(bytes32, address) external view returns (uint);
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}
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interface TokenJoinInterface {
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function dec() external returns (uint);
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function gem() external returns (TokenInterface);
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function join(address, uint) external payable;
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function exit(address, uint) external;
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}
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interface DaiJoinInterface {
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function vat() external returns (VatLike);
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function dai() external returns (TokenInterface);
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function join(address, uint) external payable;
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function exit(address, uint) external;
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}
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interface JugLike {
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function drip(bytes32) external returns (uint);
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}
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// End MakerDAO Helpers
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contract DSMath {
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uint constant WAD = 10 ** 18;
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uint constant RAY = 10 ** 27;
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function add(uint x, uint y) internal pure returns (uint z) {
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require((z = x + y) >= x, "math-not-safe");
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}
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function sub(uint x, uint y) internal pure returns (uint z) {
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require((z = x - y) <= x, "sub-overflow");
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}
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function mul(uint x, uint y) internal pure returns (uint z) {
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require(y == 0 || (z = x * y) / y == x, "math-not-safe");
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}
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uint constant WAD = 10 ** 18;
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function wmul(uint x, uint y) internal pure returns (uint z) {
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z = add(mul(x, y), WAD / 2) / WAD;
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}
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@ -195,6 +254,23 @@ contract DSMath {
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z = add(mul(x, WAD), y / 2) / y;
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}
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function toRad(uint wad) internal pure returns (uint rad) {
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rad = mul(wad, 10 ** 27);
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}
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function toInt(uint x) internal pure returns (int y) {
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y = int(x);
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require(y >= 0, "int-overflow");
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}
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function convertTo18(uint _dec, uint256 _amt) internal pure returns (uint256 amt) {
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amt = mul(_amt, 10 ** (18 - _dec));
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}
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function convert18ToDec(uint _dec, uint256 _amt) internal pure returns (uint256 amt) {
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amt = (_amt / 10 ** (18 - _dec));
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}
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}
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contract Helpers is DSMath {
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@ -241,6 +317,41 @@ contract Helpers is DSMath {
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return 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;
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}
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/**
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* @dev Return Maker MCD DAI_Join Address.
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*/
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function getMcdDaiJoin() internal pure returns (address) {
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return 0x9759A6Ac90977b93B58547b4A71c78317f391A28;
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}
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/**
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* @dev Return Maker MCD Manager Address.
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*/
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function getMcdManager() internal pure returns (address) {
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return 0x5ef30b9986345249bc32d8928B7ee64DE9435E39;
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}
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/**
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* @dev Return Maker MCD DAI Address.
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*/
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function getMcdDai() internal pure returns (address) {
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return 0x6B175474E89094C44Da98b954EedeAC495271d0F;
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}
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/**
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* @dev Return Maker MCD Jug Address.
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*/
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function getMcdJug() internal pure returns (address) {
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return 0x19c0976f590D67707E62397C87829d896Dc0f1F1;
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}
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/**
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* @dev Return Maker MCD Pot Address.
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*/
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function getMcdPot() internal pure returns (address) {
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return 0x197E90f9FAD81970bA7976f33CbD77088E5D7cf7;
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}
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/**
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* @dev get Aave Provider
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*/
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@ -316,6 +427,56 @@ contract Helpers is DSMath {
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(, , , , , , , , isCol) = aaveData.getUserReserveData(token, address(this));
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}
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/**
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* @dev Get Vault's ilk.
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*/
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function getVaultData(ManagerLike managerContract, uint vault) internal view returns (bytes32 ilk, address urn) {
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ilk = managerContract.ilks(vault);
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urn = managerContract.urns(vault);
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}
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/**
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* @dev Convert String to bytes32.
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*/
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function stringToBytes32(string memory str) internal pure returns (bytes32 result) {
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require(bytes(str).length != 0, "string-empty");
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// solium-disable-next-line security/no-inline-assembly
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assembly {
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result := mload(add(str, 32))
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}
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}
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/**
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* @dev Get vault ID. If `vault` is 0, get last opened vault.
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*/
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function getVault(ManagerLike managerContract, uint vault) internal view returns (uint _vault) {
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if (vault == 0) {
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require(managerContract.count(address(this)) > 0, "no-vault-opened");
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_vault = managerContract.last(address(this));
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} else {
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_vault = vault;
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}
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}
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/**
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* @dev Get Borrow Amount [MakerDAO]
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*/
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function _getBorrowAmt(
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address vat,
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address urn,
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bytes32 ilk,
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uint amt
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) internal returns (int dart)
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{
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address jug = getMcdJug();
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uint rate = JugLike(jug).drip(ilk);
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uint dai = VatLike(vat).dai(urn);
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if (dai < mul(amt, RAY)) {
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dart = toInt(sub(mul(amt, RAY), dai) / rate);
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dart = mul(uint(dart), rate) < mul(amt, RAY) ? dart + 1 : dart;
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}
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}
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function convertEthToWeth(bool isEth, TokenInterface token, uint amount) internal {
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if(isEth) token.deposit.value(amount)();
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}
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@ -597,3 +758,73 @@ contract AaveV2Helpers is AaveV1Helpers {
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}
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}
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}
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contract MakerHelpers is AaveV2Helpers {
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function _makerOpen(string memory colType) internal returns (uint vault) {
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bytes32 ilk = stringToBytes32(colType);
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require(InstaMapping(getMappingAddr()).gemJoinMapping(ilk) != address(0), "wrong-col-type");
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vault = ManagerLike(getMcdManager()).open(ilk, address(this));
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}
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function _makerBorrow(uint vault, uint amt) internal {
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ManagerLike managerContract = ManagerLike(getMcdManager());
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uint _vault = getVault(managerContract, vault);
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(bytes32 ilk, address urn) = getVaultData(managerContract, _vault);
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address daiJoin = getMcdDaiJoin();
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VatLike vatContract = VatLike(managerContract.vat());
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managerContract.frob(
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_vault,
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0,
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_getBorrowAmt(
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address(vatContract),
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urn,
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ilk,
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amt
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)
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);
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managerContract.move(
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_vault,
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address(this),
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toRad(amt)
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);
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if (vatContract.can(address(this), address(daiJoin)) == 0) {
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vatContract.hope(daiJoin);
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}
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DaiJoinInterface(daiJoin).exit(address(this), amt);
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}
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function _makerDeposit(uint vault, uint amt) internal {
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ManagerLike managerContract = ManagerLike(getMcdManager());
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uint _vault = getVault(managerContract, vault);
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(bytes32 ilk, address urn) = getVaultData(managerContract, _vault);
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address colAddr = InstaMapping(getMappingAddr()).gemJoinMapping(ilk);
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TokenJoinInterface tokenJoinContract = TokenJoinInterface(colAddr);
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TokenInterface tokenContract = tokenJoinContract.gem();
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if (address(tokenContract) == getWethAddr()) {
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tokenContract.deposit.value(amt)();
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}
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tokenContract.approve(address(colAddr), amt);
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tokenJoinContract.join(address(this), amt);
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VatLike(managerContract.vat()).frob(
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ilk,
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urn,
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address(this),
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address(this),
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toInt(convertTo18(tokenJoinContract.dec(), amt)),
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0
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);
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}
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}
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