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TORMinter.sol
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TORMinter.sol
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// SPDX-License-Identifier: AGPL-3.0-or-later
pragma solidity 0.8.7;
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(
address(this).balance >= amount,
"Address: insufficient balance"
);
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(
success,
"Address: unable to send value, recipient may have reverted"
);
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data)
internal
returns (bytes memory)
{
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return
functionCallWithValue(
target,
data,
value,
"Address: low-level call with value failed"
);
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(
address(this).balance >= value,
"Address: insufficient balance for call"
);
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) =
target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data)
internal
view
returns (bytes memory)
{
return
functionStaticCall(
target,
data,
"Address: low-level static call failed"
);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data)
internal
returns (bytes memory)
{
return
functionDelegateCall(
target,
data,
"Address: low-level delegate call failed"
);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) private pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(
token,
abi.encodeWithSelector(token.transfer.selector, to, value)
);
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(
token,
abi.encodeWithSelector(token.transferFrom.selector, from, to, value)
);
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(
token,
abi.encodeWithSelector(token.approve.selector, spender, value)
);
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata =
address(token).functionCall(
data,
"SafeERC20: low-level call failed"
);
if (returndata.length > 0) {
// Return data is optional
// solhint-disable-next-line max-line-length
require(
abi.decode(returndata, (bool)),
"SafeERC20: ERC20 operation did not succeed"
);
}
}
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
function sqrrt(uint256 a) internal pure returns (uint c) {
if (a > 3) {
c = a;
uint b = add( div( a, 2), 1 );
while (b < c) {
c = b;
b = div( add( div( a, b ), b), 2 );
}
} else if (a != 0) {
c = 1;
}
}
}
interface IERC20 {
function approve(address spender, uint256 amount) external returns (bool);
function balanceOf(address account) external view returns (uint256);
function allowance(address owner, address spender)
external
view
returns (uint256);
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
function transfer(address recipient, uint256 amount)
external
returns (bool);
function mint(address account_, uint256 amount_) external;
function decimals() external view returns (uint8);
function burnFrom(address account_, uint256 amount_) external;
}
interface IOwnable {
function owner() external view returns (address);
function renounceManagement(string memory confirm) external;
function pushManagement( address newOwner_ ) external;
function pullManagement() external;
}
contract Ownable is IOwnable {
address internal _owner;
address internal _newOwner;
event OwnershipPushed(address indexed previousOwner, address indexed newOwner);
event OwnershipPulled(address indexed previousOwner, address indexed newOwner);
constructor () {
_owner = msg.sender;
emit OwnershipPulled( address(0), _owner );
}
function owner() public view override returns (address) {
return _owner;
}
modifier onlyOwner() {
require( _owner == msg.sender, "Ownable: caller is not the owner" );
_;
}
function renounceManagement(string memory confirm) external virtual override onlyOwner() {
require(
keccak256(abi.encodePacked(confirm)) == keccak256(abi.encodePacked("confirm renounce")),
"Ownable: renouce needs 'confirm renounce' as input"
);
emit OwnershipPushed( _owner, address(0) );
_owner = address(0);
_newOwner = address(0);
}
function pushManagement( address newOwner_ ) external virtual override onlyOwner() {
require( newOwner_ != address(0), "Ownable: new owner is the zero address");
emit OwnershipPushed( _owner, newOwner_ );
_newOwner = newOwner_;
}
function pullManagement() external virtual override {
require( msg.sender == _newOwner, "Ownable: must be new owner to pull");
emit OwnershipPulled( _owner, _newOwner );
_owner = _newOwner;
_newOwner = address(0);
}
}
interface IUniswapRouter{
function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface ITORMinter{
function mintWithDai(uint _daiAmount) external returns(uint _torAmount);
function mintWithUsdc(uint _usdcAmount) external returns(uint _torAmount);
function redeemToDai(uint _torAmount) external returns(uint _daiAmount);
function redeemToUsdc(uint _torAmount) external returns(uint _usdcAmount);
}
interface ITORMinterValuesV2{
function totalMintFee() external view returns(uint);
function totalBurnFee() external view returns(uint);
function totalTorMinted() external view returns(uint);
function totalTorBurnt() external view returns(uint);
function totalHecMinted() external view returns(uint);
function totalHecBurnt() external view returns(uint);
function lastMintTimestamp() external view returns(uint);
function lastRedeemTimestamp() external view returns(uint);
}
interface ITORMinterValuesV3 is ITORMinterValuesV2{
function totalEarnedCollateral() external view returns(uint);
function totalSpentCollateral() external view returns(uint);
}
interface IHECMinter{
function mintHEC(uint amount) external;
function burnHEC(uint amount) external;
}
interface ITORMintRedeemStrategy{
function canMint(address recipient,uint torAmount,address stableToken) external returns(bool);
function canRedeem(address recipient,uint torAmount,address stableToken) external returns(bool);
}
interface ITreasury{
function manage(address _token, uint256 _amount) external;
}
contract TORMinter is ITORMinter,Ownable{
using SafeERC20 for IERC20;
using SafeMath for uint;
IERC20 dai=IERC20(0x8D11eC38a3EB5E956B052f67Da8Bdc9bef8Abf3E);
IERC20 usdc=IERC20(0x04068DA6C83AFCFA0e13ba15A6696662335D5B75);
IERC20 public hec=IERC20(0x5C4FDfc5233f935f20D2aDbA572F770c2E377Ab0);
address public treasury=0xCB54EA94191B280C296E6ff0E37c7e76Ad42dC6A;
IERC20 TOR;
IHECMinter HECMinter;
uint public totalMintFee;
uint public totalBurnFee;
uint public totalTorMinted;
uint public totalTorBurnt;
uint public totalHecMinted;
uint public totalHecBurnt;
uint public lastMintTimestamp;
uint public lastRedeemTimestamp;
uint public totalEarnedCollateral;
uint public totalSpentCollateral;
bool upgraded=false;
ITORMintRedeemStrategy public strategy;
mapping(IERC20=>IUniswapRouter) routers;
uint public mintFeeBasisPoints=10;
uint public redeemFeeBasisPoints=10;
uint constant UNIT_ONE_IN_BPS=10000;
uint public mintCR=5000; //4000 = 40%, 40% dai from the mint goes to treasury, and 60% usdc goes to hec/dai lp to buy and burn
uint public redeemCR=1000;//1000 = 10%, redeemCR<=mintCR, 10% dai comes from treasury to pay for redeem, 90% usdc comes from minted HEC sold on hec/dai
constructor(address _HECMinter, address _TOR){
require(_HECMinter!=address(0),"invalid _HECMinter address");
HECMinter=IHECMinter(_HECMinter);
require(_TOR!=address(0),"invalid _TOR address");
TOR=IERC20(_TOR);
lastMintTimestamp=block.timestamp;
lastRedeemTimestamp=block.timestamp;
routers[dai]=IUniswapRouter(0xF491e7B69E4244ad4002BC14e878a34207E38c29); //dai=>spooky
routers[usdc]=IUniswapRouter(0x16327E3FbDaCA3bcF7E38F5Af2599D2DDc33aE52); //usdc=>spirit
}
function upgradeFrom(address oldTorMinter,bool isV3MinterValues) external onlyOwner(){
if(!upgraded){
if(isV3MinterValues){
totalEarnedCollateral=ITORMinterValuesV3(oldTorMinter).totalEarnedCollateral();
totalSpentCollateral=ITORMinterValuesV3(oldTorMinter).totalSpentCollateral();
}
totalMintFee=ITORMinterValuesV2(oldTorMinter).totalMintFee();
totalBurnFee=ITORMinterValuesV2(oldTorMinter).totalBurnFee();
totalTorMinted=ITORMinterValuesV2(oldTorMinter).totalTorMinted();
totalTorBurnt=ITORMinterValuesV2(oldTorMinter).totalTorBurnt();
lastMintTimestamp=ITORMinterValuesV2(oldTorMinter).lastMintTimestamp();
lastRedeemTimestamp=ITORMinterValuesV2(oldTorMinter).lastRedeemTimestamp();
totalHecMinted=ITORMinterValuesV2(oldTorMinter).totalHecMinted();
totalHecBurnt=ITORMinterValuesV2(oldTorMinter).totalHecBurnt();
upgraded=true;
emit UpgradedFrom(oldTorMinter);
}
}
function setHec(address _hec) external onlyOwner(){
require(_hec!=address(0),"invalid _hec address");
emit AddressUpdated(1,address(hec),_hec);
hec=IERC20(_hec);
}
function setTOR(address _TOR) external onlyOwner(){
require(_TOR!=address(0),"invalid _TOR address");
emit AddressUpdated(2,address(TOR),_TOR);
TOR=IERC20(_TOR);
}
function setHECMinter(address _HECMinter) external onlyOwner(){
require(_HECMinter!=address(0),"invalid _HECMinter address");
emit AddressUpdated(3,address(HECMinter),_HECMinter);
HECMinter=IHECMinter(_HECMinter);
}
function setMintStrategy(address _strategy) external onlyOwner(){
require(_strategy!=address(0),"invalid _strategy address");
emit AddressUpdated(4,address(strategy),_strategy);
strategy=ITORMintRedeemStrategy(_strategy);
}
function setTreasury(address _treasury) external onlyOwner(){
require(_treasury!=address(0),"invalid _treasury address");
emit AddressUpdated(5,treasury,_treasury);
treasury=_treasury;
}
function setMintFee(uint _mintFeeBasisPoints) external onlyOwner(){
require(_mintFeeBasisPoints<=1000,"fee can't be higher than 1000 bps");
emit FeeUpdated(1,mintFeeBasisPoints,_mintFeeBasisPoints);
mintFeeBasisPoints=_mintFeeBasisPoints;
}
function setRedeemFee(uint _redeemFeeBasisPoints) external onlyOwner(){
require(_redeemFeeBasisPoints<=1000,"fee can't be higher than 1000 bps");
emit FeeUpdated(2,redeemFeeBasisPoints,_redeemFeeBasisPoints);
redeemFeeBasisPoints=_redeemFeeBasisPoints;
}
function setDaiLpSwapRouter(address _swapRouter) external onlyOwner(){
require(_swapRouter!=address(0),"invalid _swapRouter address");
emit AddressUpdated(6,address(routers[dai]),_swapRouter);
routers[dai]=IUniswapRouter(_swapRouter);
}
function setUsdcLpSwapRouter(address _swapRouter) external onlyOwner(){
require(_swapRouter!=address(0),"invalid _swapRouter address");
emit AddressUpdated(6,address(routers[usdc]),_swapRouter);
routers[usdc]=IUniswapRouter(_swapRouter);
}
function setMintCR(uint _mintCR) external onlyOwner{
require(_mintCR<=10000,"mint CR must be lower than or equal to 100%");
require(_mintCR>=redeemCR,"mint CR must be higher than or equal to redeem CR");
emit CRUpdated(1,mintCR,_mintCR);
mintCR=_mintCR;
}
function setRedeemCR(uint _redeemCR) external onlyOwner{
require(_redeemCR<=mintCR,"redeem CR must be lower than or equal to mint CR");
emit CRUpdated(2,redeemCR,_redeemCR);
redeemCR=_redeemCR;
}
function collectFee() external onlyOwner(){
uint daiAmount=dai.balanceOf(address(this));
if(dai.balanceOf(address(this))>0)dai.safeTransfer(owner(),dai.balanceOf(address(this)));
uint usdcAmount=usdc.balanceOf(address(this));
if(usdc.balanceOf(address(this))>0)usdc.safeTransfer(owner(),usdc.balanceOf(address(this)));
if(daiAmount>0||usdcAmount>0) emit FeeCollected(daiAmount,usdcAmount,owner());
}
function convertDecimal(IERC20 from,IERC20 to, uint fromAmount) view public returns(uint toAmount){
uint8 fromDec=from.decimals();
uint8 toDec=to.decimals();
if(fromDec==toDec) toAmount=fromAmount;
else if(fromDec>toDec) toAmount=fromAmount.div(10**(fromDec-toDec));
else toAmount=fromAmount.mul(10**(toDec-fromDec));
}
function mintWithStable(IERC20 _stableToken,uint _stableAmount) internal returns(uint _torAmount){
require(address(routers[_stableToken])!=address(0),"unknown stable token");
require(msg.sender==tx.origin,"mint for EOA only");
require(address(strategy)!=address(0),"mint redeem strategy is not set");
_stableToken.safeTransferFrom(msg.sender,address(this),_stableAmount);
//amount here is net after fee deducted
uint amount=_stableAmount.mul(UNIT_ONE_IN_BPS.sub(mintFeeBasisPoints)).div(UNIT_ONE_IN_BPS);
uint tor2mint=convertDecimal(_stableToken,TOR,amount);
if(_stableAmount>amount){
totalMintFee=totalMintFee.add(convertDecimal(_stableToken,TOR,_stableAmount.sub(amount)));
}
//toTreasury is amount sending to treasury
uint toTreasury = amount.mul(mintCR).div(UNIT_ONE_IN_BPS);
if(toTreasury>0){
_stableToken.safeTransfer(treasury,toTreasury);
//amount here is net amount fund to buy HEC from LP and burn;
amount=amount.sub(toTreasury);
totalEarnedCollateral=totalEarnedCollateral.add(convertDecimal(_stableToken,TOR,toTreasury));
}
if(amount>0){
_stableToken.approve(address(routers[_stableToken]),amount);
address[] memory path=new address[](2);
path[0]=address(_stableToken);
path[1]=address(hec);
uint[] memory amountOuts=routers[_stableToken].swapExactTokensForTokens(
amount,
1,
path,
address(this),
block.timestamp
);
hec.approve(address(HECMinter),amountOuts[1]);
HECMinter.burnHEC(amountOuts[1]);
totalHecBurnt=totalHecBurnt.add(amountOuts[1]);
}
require(strategy.canMint(msg.sender,tor2mint,address(_stableToken)),"mint not allowed by strategy");
TOR.mint(msg.sender,tor2mint);
totalTorMinted=totalTorMinted.add(tor2mint);
lastMintTimestamp=block.timestamp;
_torAmount=tor2mint;
emit TorMinted(address(_stableToken),_stableAmount,_torAmount);
}
function mintWithDai(uint _daiAmount) override external returns(uint _torAmount){
return mintWithStable(dai,_daiAmount);
}
function mintWithUsdc(uint _usdcAmount) override external returns(uint _torAmount){
return mintWithStable(usdc,_usdcAmount);
}
function redeemToStable(uint _torAmount,IERC20 _stableToken) internal returns(uint _stableAmount){
require(address(routers[_stableToken])!=address(0),"unknown stable token");
require(msg.sender==tx.origin,"redeem for EOA only");
require(address(strategy)!=address(0),"mint redeem strategy is not set");
require(strategy.canRedeem(msg.sender,_torAmount,address(_stableToken)),"redeem not allowed by strategy");
TOR.burnFrom(msg.sender,_torAmount);
totalTorBurnt=totalTorBurnt.add(_torAmount);
lastRedeemTimestamp=block.timestamp;
//deduct fee
uint totalAmountOut=convertDecimal(TOR,_stableToken,_torAmount).mul(UNIT_ONE_IN_BPS.sub(redeemFeeBasisPoints)).div(UNIT_ONE_IN_BPS);
//amount from treasury based on redeemCR setting
uint fromTreasury=totalAmountOut.mul(redeemCR).div(UNIT_ONE_IN_BPS);
if(fromTreasury>0){
ITreasury(treasury).manage(address(_stableToken),fromTreasury);
totalSpentCollateral=totalSpentCollateral.add(convertDecimal(_stableToken,TOR,fromTreasury));
}
//amount from newly minted HEC sold
uint amountOut=totalAmountOut.sub(fromTreasury);
if(amountOut>0){
address[] memory path=new address[](2);
path[0]=address(hec);
path[1]=address(_stableToken);
uint[] memory amounts=routers[_stableToken].getAmountsIn(amountOut, path);
HECMinter.mintHEC(amounts[0]);
totalHecMinted=totalHecMinted.add(amounts[0]);
hec.approve(address(routers[_stableToken]),amounts[0]);
uint[] memory amountOuts=routers[_stableToken].swapExactTokensForTokens(
amounts[0],
1,
path,
address(this),
block.timestamp
);
amountOut=amountOuts[1];
}
totalAmountOut=amountOut.add(fromTreasury);
if(_torAmount>convertDecimal(_stableToken,TOR,totalAmountOut)){
totalBurnFee=totalBurnFee.add(_torAmount.sub(convertDecimal(_stableToken,TOR,totalAmountOut)));
}
_stableToken.safeTransfer(msg.sender,totalAmountOut);
_stableAmount=totalAmountOut;
emit TorRedeemed(_torAmount,address(_stableToken),_stableAmount);
}
function redeemToDai(uint _torAmount) override external returns(uint _daiAmount){
return redeemToStable(_torAmount,dai);
}
function redeemToUsdc(uint _torAmount) override external returns(uint _usdcAmount){
return redeemToStable(_torAmount,usdc);
}
event UpgradedFrom(address oldMinter);
event AddressUpdated(uint addressType,address oldAddress,address newAddress);
event FeeUpdated(uint feeType,uint oldFeeBp,uint newFeeBp);
event CRUpdated(uint CRType,uint oldCRBp,uint newCRBp);
event FeeCollected(uint daiAmount,uint usdcAmount,address feeToAddress);
event TorMinted(address stableCoin,uint stableAmount,uint torAmount);
event TorRedeemed(uint torAmount,address stableCoin,uint stableAmount);
}