Contract 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a 1

 
Txn Hash Method
Block
From
To
Value [Txn Fee]
0xb71d30b48361f02238365dfdd35d252833b891b2499004aa0e440214eece5891Initialize45203532022-01-10 4:14:33328 days 17 hrs ago0x420220b72bbd307db8615e7aa0eadca399cf2fc0 IN  0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH0.001305869706 ETH
0xa0b0ac37f05546678ee7a59c159589fc257a8939799715cad88af8f0ebb1709c0x60a0604024412892021-10-22 6:25:35408 days 15 hrs ago0x420220b72bbd307db8615e7aa0eadca399cf2fc0 IN  Create: Comptroller0 ETH0.099061110576 ETH
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Latest 25 internal transaction
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0xb3bfb4fb65e27777df7ac79685829c40caab36255313059841ef8bcd794724b5425975382022-12-01 3:07:583 days 18 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0x684d02b71cacde4285a2968ce90909f4fb09ae4792b7f8d0a6b519aa885ea35d418721792022-11-28 12:10:356 days 9 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0x6abe31e3c8380abb94f4e3d5bbd6a8b4eb50ba38356d19cd7142f6a6aa174f7d418685872022-11-28 11:52:336 days 9 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0xf398d2cc2de03839d763e67743658a45534350d3feefb1216ef3b7b9f4444db8405111472022-11-23 10:03:2911 days 11 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0x22d491c769d2396cefbafca34d24e7ed19db1af7820fad2e0c01495fedc36e78404939522022-11-23 8:46:2611 days 12 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0xe6d9f1a21413f7b83d7cfa370b58f3b9da4b5e771a1318dc1d77781064c84e60404931342022-11-23 8:42:3911 days 12 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0x0e3c1ed4c1bfd7e727ac44a7b9fe60ebccb628449ea74d943c82e3310454adec404930122022-11-23 8:42:0511 days 12 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0x2c4dd84a36c456a73cfbc79558739de7cf8858e744a785ad3c743739151c3094404919312022-11-23 8:37:1911 days 13 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0x1d25db07aaa83e2c5ada23f584e426b83a36bbf0de8b48fdbafc7ddd84d9ffb1404901282022-11-23 8:29:1211 days 13 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0xed530d1b479560bd12623b49399ddcd4906103a4e6bd9309e129f1c6eddd828d401479052022-11-22 5:21:3912 days 16 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0xc292afd92508b5e7beb8bc8d2f9b166b6b61a28b50dc68cf548a23aa122ae827399298262022-11-21 11:43:5013 days 9 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0x55ba91a0d2b576e6076eb8da28989d4624761f31c61154a8258f95faa5e3b6c5399257282022-11-21 11:26:0113 days 10 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0xc3b2eae4710d9fecc3949e8999cc3952a6c519783f61eff2fe28ab50a13f1662399233002022-11-21 11:15:3513 days 10 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0x31bbc0d8260c663b879f20df86f175ae3af23a97594fc6e21ed2dbd4b85828f0399226502022-11-21 11:12:4013 days 10 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0x37b372c52768aa152d288912073ce737364df901b950455d927a5879ce9f991b399101122022-11-21 10:18:5413 days 11 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0xa9e72082a4ad5b43f12ea2f36f78057b6dfba0f0c64e17ad1df0ff8f413f8718399090202022-11-21 10:14:1513 days 11 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0xba506e97f3963491f77a8a43989aaa6fdad65ae392a6a7b2be5770c134eecba1399057142022-11-21 10:00:0013 days 11 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0x8c1144c35c9ef6adae306591553185647c3031874c41dca939bd18ec0ea24d06399043192022-11-21 9:54:0213 days 11 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0x370059e034a2dac0413e10c08c4367eb95d60f20d83406fa07ff95cffe2f33bb399027822022-11-21 9:47:3513 days 11 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0x394e36ec3a6b5b8ff84065f3abec39716bdd5cd9a7a68277418565cb6b7bb5f8399018442022-11-21 9:43:3813 days 11 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0x24ec3d8359a63c0e68701daeb58a302327c6774eb392c9efe11d2debf966d5d1399012512022-11-21 9:41:0113 days 11 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0xcd1680376727734a0600fbb74d8cde5d2f780462860f8b300509a9cfc6badc0c398878842022-11-21 8:43:5113 days 12 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0x1fcfab579bb68265951963b9a228a12a203752558918055314de3c35ea1cdc37398867842022-11-21 8:39:1013 days 13 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0xe9b672d9349a82aed9e9902c8ad836944b932617c7970167713279cdba0002f4398864992022-11-21 8:37:5813 days 13 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
0xdfb1851128ed711dc001f856a5e64f653b23fc1704defe993927306deffce15b398860612022-11-21 8:36:0413 days 13 hrs ago 0x140d144480e3edeb4d1a519997be1edf4175be2d 0xf53e939a9f045a2e1811cbbac306c7a22d3db66a0 ETH
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This contract may be a proxy contract. Click on More Options and select Is this a proxy? to confirm and enable the "Read as Proxy" & "Write as Proxy" tabs.

Contract Source Code Verified (Exact Match)

Contract Name:
Comptroller

Compiler Version
v0.8.3+commit.8d00100c

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 26 : Comptroller.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
pragma abicoder v2;

import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "../interfaces/Bank/IComptroller.sol";
import "../interfaces/Bank/IVaultLibrary.sol";
import "../interfaces/Bank/ITreasury.sol";
import "../interfaces/Bank/IfxToken.sol";
import "../interfaces/IValidator.sol";
import "../interfaces/IWETH.sol";
import "../interfaces/Bank/IHandle.sol";
import "../interfaces/Bank/IInterest.sol";
import "../interfaces/Bank/IReferral.sol";
import "../interfaces/rewards/IRewardPool.sol";
import "./HandlePausable.sol";

/**
 * @dev Provides mint and burn functions for vaults.
 */
contract Comptroller is
    IComptroller,
    IValidator,
    Initializable,
    UUPSUpgradeable,
    OwnableUpgradeable,
    ReentrancyGuardUpgradeable,
    HandlePausable
{
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    /** @dev The Handle contract interface */
    IHandle private handle;
    /** @dev The Treasury contract interface */
    ITreasury private treasury;
    /** @dev The VaultLibrary contract interface */
    IVaultLibrary private vaultLibrary;
    /** @dev The canonical WETH address */
    address private WETH;

    /** @dev The minting threshold amount in ETH */
    uint256 public override minimumMintingAmount;

    /** @dev Proxy initialisation function */
    function initialize() public initializer {
        __UUPSUpgradeable_init();
        __Ownable_init();
        __ReentrancyGuard_init();
    }

    /**
     * @dev Setter for Handle contract reference
     * @param _handle The Handle contract address
     */
    function setHandleContract(address _handle) public override onlyOwner {
        handle = IHandle(_handle);
        treasury = ITreasury(handle.treasury());
        vaultLibrary = IVaultLibrary(handle.vaultLibrary());
        WETH = handle.WETH();
    }

    /** @dev Getter for Handle contract address */
    function handleAddress() public view override returns (address) {
        return address(handle);
    }

    /** @dev Only allows ETH transfers from WETH withdrawals */
    receive() external payable {
        assert(msg.sender == WETH);
    }

    modifier validFxToken(address token) {
        require(handle.isFxTokenValid(token), "IF");
        _;
    }

    /**
     * @dev Setter for the minimum minting amount
     * @param amount The minimum minting amount in ETH
     */
    function setMinimumMintingAmount(uint256 amount)
        external
        override
        onlyOwner
    {
        minimumMintingAmount = amount;
    }

    /**
     * @dev Wraps received ETH and mints with WETH as collateral
     * @param tokenAmount The amount of fxTokens the user wants
     * @param token The token to mint
     * @param deadline The time on which the transaction is invalid.
     * @param referral The referral account
     */
    function mintWithEth(
        uint256 tokenAmount,
        address token,
        uint256 deadline,
        address referral
    )
        external
        payable
        override
        dueBy(deadline)
        validFxToken(token)
        nonReentrant
    {
        require(handle.isCollateralValid(WETH), "WE");
        require(tokenAmount > 0 && msg.value > 0, "IA");
        IWETH(WETH).deposit{value: msg.value}();
        _mintAndDeposit(tokenAmount, token, WETH, msg.value, referral);
    }

    /**
     * @dev Mints with a valid ERC20 as collateral.
            Must have pre-approved ERC20 allowance.
     * @param tokenAmount The amount of fxTokens the user wants
     * @param token The token to mint
     * @param deadline The time on which the transaction is invalid.
     * @param referral The referral account
     */
    function mint(
        uint256 tokenAmount,
        address token,
        address collateralToken,
        uint256 collateralAmount,
        uint256 deadline,
        address referral
    ) external override dueBy(deadline) validFxToken(token) nonReentrant {
        require(handle.isCollateralValid(collateralToken), "IC");
        require(tokenAmount > 0 && collateralAmount > 0, "IA");
        IERC20(collateralToken).safeTransferFrom(
            msg.sender,
            address(this),
            collateralAmount
        );
        _mintAndDeposit(
            tokenAmount,
            token,
            collateralToken,
            collateralAmount,
            referral
        );
    }

    /**
     * @dev Mints the requested amount accounting for mint fees and deposits
            collateral into the vault via the Treasury.
     * @param tokenAmount The token amount to mint, excluding the mint fee.
     * @param token The fxToken to mint
     * @param collateralToken The collateral token to deposit.
     * @param collateralAmount The amount of collateral to deposit.
     * @param referral The referral account.
     */
    function _mintAndDeposit(
        uint256 tokenAmount,
        address token,
        address collateralToken,
        uint256 collateralAmount,
        address referral
    ) private {
        IERC20(collateralToken).safeApprove(address(treasury), 0);
        IERC20(collateralToken).safeApprove(
            address(treasury),
            collateralAmount
        );

        // Calculate fee with current amount and increase token amount to include fee.
        uint256 feeTokens = tokenAmount.mul(handle.mintFeePerMille()).div(1000);
        uint256 feeCollateral =
            collateralAmount.mul(handle.depositFeePerMille()).div(1000);
        uint256 tokenQuote = handle.getTokenPrice(token);

        _ensureMinimumMintingAmount(
            msg.sender,
            token,
            tokenQuote,
            tokenAmount,
            true
        );

        require(
            vaultLibrary.canMint(
                msg.sender,
                token,
                collateralToken,
                collateralAmount.sub(feeCollateral),
                tokenAmount.add(feeTokens),
                tokenQuote,
                handle.getTokenPrice(collateralToken)
            ),
            "CR"
        );

        // Deposit in the treasury
        treasury.depositCollateral(
            msg.sender,
            collateralAmount,
            collateralToken,
            token,
            referral
        );

        _mint(tokenAmount, token, tokenQuote, feeTokens);
    }

    /**
     * @dev Mints fxTokens for the user and protocol as fees.
     * @param tokenAmount The token amount to mint for the user, excluding fee.
     * @param token The fxToken address to mint.
     * @param tokenQuote The unit price in ETH for the fxToken.
     * @param feeTokenAmount The amount of fxTokens to be minted as a fee.
     */
    function _mint(
        uint256 tokenAmount,
        address token,
        uint256 tokenQuote,
        uint256 feeTokenAmount
    ) private notPaused {
        // Mint tokens and fee
        uint256 balanceBefore = IfxToken(token).balanceOf(msg.sender);
        IfxToken(token).mint(msg.sender, tokenAmount);
        IfxToken(token).mint(handle.FeeRecipient(), feeTokenAmount);
        assert(
            IfxToken(token).balanceOf(msg.sender) ==
                balanceBefore.add(tokenAmount)
        );

        // Update debt position
        uint256 debtPosition = handle.getDebt(msg.sender, token);
        uint256 totalMintedAmount = tokenAmount.add(feeTokenAmount);
        handle.updateDebtPosition(msg.sender, totalMintedAmount, token, true);
        assert(
            debtPosition.add(totalMintedAmount) ==
                handle.getDebt(msg.sender, token)
        );

        // Stake into the reward pool.
        IRewardPool rewards = IRewardPool(handle.rewards());
        (bool found, uint256 rewardPoolId) =
            rewards.getPoolIdByAlias(
                rewards.getFxTokenPoolAlias(
                    token,
                    uint256(RewardPoolCategory.Mint)
                )
            );
        if (found) rewards.stake(msg.sender, totalMintedAmount, rewardPoolId);

        emit MintToken(tokenQuote, totalMintedAmount, token);
    }

    /**
     * @dev Allows an user to mint fxTokens with existing collateral.
     * @param tokenAmount The amount of fxTokens the user wants.
     * @param token The fxToken to mint.
     * @param deadline The time on which the transaction is invalid.
     * @param referral The referral account.
     */
    function mintWithoutCollateral(
        uint256 tokenAmount,
        address token,
        uint256 deadline,
        address referral
    ) public override dueBy(deadline) validFxToken(token) nonReentrant {
        require(tokenAmount > 0, "IA");

        // Check the vault ratio is correct (fxToken <-> collateral)
        uint256 quote = handle.getTokenPrice(token);

        _ensureMinimumMintingAmount(
            msg.sender,
            token,
            quote,
            tokenAmount,
            true
        );

        _trySetReferral(msg.sender, referral);

        // Update interest rates according to cache time.
        IInterest(handle.interest()).tryUpdateRates();

        // Calculate fee with current amount and increase token amount to include fee.
        uint256 feeTokens = tokenAmount.mul(handle.mintFeePerMille()).div(1000);

        require(
            vaultLibrary.getFreeCollateralAsEth(msg.sender, token) >=
                vaultLibrary.getMinimumCollateral(
                    tokenAmount.add(feeTokens),
                    vaultLibrary.getMinimumRatio(msg.sender, token),
                    quote
                ),
            "CR"
        );

        _mint(tokenAmount, token, quote, feeTokens);
    }

    /**
     * @dev Burns fxToken debt from sender's vault.
     * @param amount The amount of fxTokens to burn.
     * @param token The token to burn.
     * @param deadline The time on which the transaction is invalid.
     */
    function burn(
        uint256 amount,
        address token,
        uint256 deadline
    )
        external
        override
        dueBy(deadline)
        validFxToken(token)
        notPaused
        nonReentrant
    {
        require(amount > 0, "IA");
        // Token balance must be higher or equal than burn amount.
        require(IfxToken(token).balanceOf(msg.sender) >= amount, "IA");
        uint256 quote = handle.getTokenPrice(token);

        {
            // Treasury debt must be higher or equal to burn amount.
            uint256 maxAmount = handle.getDebt(msg.sender, token);
            if (amount > maxAmount) amount = maxAmount;
            if (amount != maxAmount)
                _ensureMinimumMintingAmount(
                    msg.sender,
                    token,
                    quote,
                    amount,
                    false
                );
        }

        // Update interest rates according to cache time.
        IInterest(handle.interest()).tryUpdateRates();

        // Store balance for assertion purposes.
        uint256 balanceBefore = IfxToken(token).balanceOf(msg.sender);

        // Charge burn fee as collateral Ether equivalent of fxToken amount.
        uint256 fee =
            amount
                .mul(handle.burnFeePerMille())
                .mul(quote)
            // Cancel out fee ratio unit after fee multiplication.
                .div(1000)
            // Cancel out token unit after price multiplication.
                .div(vaultLibrary.getTokenUnit(token));
        // Withdraw any available collateral type for fee.
        treasury.forceWithdrawAnyCollateral(
            msg.sender,
            handle.FeeRecipient(),
            fee,
            token,
            true
        );

        // Burn tokens
        IfxToken(token).burn(msg.sender, amount);
        assert(
            IfxToken(token).balanceOf(msg.sender) == balanceBefore.sub(amount)
        );

        // Update debt position
        uint256 debtPositionBefore = handle.getDebt(msg.sender, token);
        handle.updateDebtPosition(msg.sender, amount, token, false);
        assert(
            handle.getDebt(msg.sender, token) == debtPositionBefore.sub(amount)
        );

        // Unstake from the reward pool.
        IRewardPool rewards = IRewardPool(handle.rewards());
        (bool found, uint256 rewardPoolId) =
            rewards.getPoolIdByAlias(
                rewards.getFxTokenPoolAlias(
                    token,
                    uint256(RewardPoolCategory.Mint)
                )
            );
        if (found) rewards.unstake(msg.sender, amount, rewardPoolId);

        emit BurnToken(amount, token);
    }

    /**
     * @dev Reverts the transaction if the resulting vault debt does not
            meet the configured minimum mint amount set by the protocol.
     * @param account The vault account
     * @param fxToken The vault fxToken
     * @param tokenPrice The fxToken price
     * @param deltaAmount The amount to be minted or burned.
     * @param isMinting Whether the transaction will mint or burn the fxToken.  
     */
    function _ensureMinimumMintingAmount(
        address account,
        address fxToken,
        uint256 tokenPrice,
        uint256 deltaAmount,
        bool isMinting
    ) private {
        if (minimumMintingAmount == 0) return;
        // Check that new principal will meet minimum mint amount after mint.
        uint256 principal = handle.getPrincipalDebt(account, fxToken);
        if (isMinting) {
            principal = principal.add(deltaAmount);
        } else if (principal <= deltaAmount) {
            revert("IA");
        } else {
            principal = principal.sub(deltaAmount);
        }
        // Convert minimum amount to fxToken equivalent.
        uint256 minimumFxAmount =
            minimumMintingAmount.mul(1 ether).div(tokenPrice);
        // Round fxAmount up to the nearest 100.
        uint256 roundBy = 100 ether;
        minimumFxAmount = ((minimumFxAmount + roundBy - 1) / roundBy) * roundBy;
        require(principal >= minimumFxAmount, "IA");
    }

    /**
     * @dev Calls the referral function to set a referral if this is the first
            time the user interacts with the protocol.
     * @param user The user address.
     * @param referral The referrer address.
     */
    function _trySetReferral(address user, address referral) private {
        IReferral(handle.referral()).setReferral(user, referral);
    }

    /** @dev Protected UUPS upgrade authorization fuction */
    function _authorizeUpgrade(address) internal override onlyOwner {}
}

File 2 of 26 : Initializable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     */
    bool private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Modifier to protect an initializer function from being invoked twice.
     */
    modifier initializer() {
        require(_initializing || !_initialized, "Initializable: contract is already initialized");

        bool isTopLevelCall = !_initializing;
        if (isTopLevelCall) {
            _initializing = true;
            _initialized = true;
        }

        _;

        if (isTopLevelCall) {
            _initializing = false;
        }
    }
}

File 3 of 26 : UUPSUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC1967/ERC1967UpgradeUpgradeable.sol";
import "./Initializable.sol";

/**
 * @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an
 * {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy.
 *
 * A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is
 * reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing
 * `UUPSUpgradeable` with a custom implementation of upgrades.
 *
 * The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism.
 *
 * _Available since v4.1._
 */
abstract contract UUPSUpgradeable is Initializable, ERC1967UpgradeUpgradeable {
    function __UUPSUpgradeable_init() internal initializer {
        __ERC1967Upgrade_init_unchained();
        __UUPSUpgradeable_init_unchained();
    }

    function __UUPSUpgradeable_init_unchained() internal initializer {
    }
    /// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
    address private immutable __self = address(this);

    /**
     * @dev Check that the execution is being performed through a delegatecall call and that the execution context is
     * a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case
     * for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a
     * function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to
     * fail.
     */
    modifier onlyProxy() {
        require(address(this) != __self, "Function must be called through delegatecall");
        require(_getImplementation() == __self, "Function must be called through active proxy");
        _;
    }

    /**
     * @dev Upgrade the implementation of the proxy to `newImplementation`.
     *
     * Calls {_authorizeUpgrade}.
     *
     * Emits an {Upgraded} event.
     */
    function upgradeTo(address newImplementation) external virtual onlyProxy {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallSecure(newImplementation, new bytes(0), false);
    }

    /**
     * @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call
     * encoded in `data`.
     *
     * Calls {_authorizeUpgrade}.
     *
     * Emits an {Upgraded} event.
     */
    function upgradeToAndCall(address newImplementation, bytes memory data) external payable virtual onlyProxy {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallSecure(newImplementation, data, true);
    }

    /**
     * @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by
     * {upgradeTo} and {upgradeToAndCall}.
     *
     * Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}.
     *
     * ```solidity
     * function _authorizeUpgrade(address) internal override onlyOwner {}
     * ```
     */
    function _authorizeUpgrade(address newImplementation) internal virtual;
    uint256[50] private __gap;
}

File 4 of 26 : ReentrancyGuardUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuardUpgradeable is Initializable {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    function __ReentrancyGuard_init() internal initializer {
        __ReentrancyGuard_init_unchained();
    }

    function __ReentrancyGuard_init_unchained() internal initializer {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
    uint256[49] private __gap;
}

File 5 of 26 : OwnableUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    function __Ownable_init() internal initializer {
        __Context_init_unchained();
        __Ownable_init_unchained();
    }

    function __Ownable_init_unchained() internal initializer {
        _setOwner(_msgSender());
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _setOwner(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
    uint256[49] private __gap;
}

File 6 of 26 : SafeERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../../../utils/Address.sol";

/**
 * @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'
        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));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    /**
     * @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
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

File 7 of 26 : SafeMath.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
 * now has built in overflow checking.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

File 8 of 26 : IComptroller.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
pragma abicoder v2;

interface IComptroller {
    event MintToken(
        uint256 tokenRate,
        uint256 amountMinted,
        address indexed token
    );

    event BurnToken(uint256 amountBurned, address indexed token);

    function mintWithEth(
        uint256 tokenAmountDesired,
        address fxToken,
        uint256 deadline,
        address referral
    ) external payable;

    function mint(
        uint256 amountDesired,
        address fxToken,
        address collateralToken,
        uint256 collateralAmount,
        uint256 deadline,
        address referral
    ) external;

    function mintWithoutCollateral(
        uint256 tokenAmountDesired,
        address token,
        uint256 deadline,
        address referral
    ) external;

    function burn(
        uint256 amount,
        address token,
        uint256 deadline
    ) external;

    function setMinimumMintingAmount(uint256 amount) external;

    function minimumMintingAmount() external view returns (uint256);
}

File 9 of 26 : IVaultLibrary.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

interface IVaultLibrary {
    function doesMeetRatio(address account, address fxToken)
        external
        view
        returns (bool);

    function getFreeCollateralAsEth(address account, address fxToken)
        external
        view
        returns (uint256);

    function getFreeCollateralAsEthFromMinimumRatio(
        address account,
        address fxToken,
        uint256 minimumRatio
    ) external view returns (uint256);

    function getMinimumRatio(address account, address fxToken)
        external
        view
        returns (uint256 ratio);

    function getMinimumCollateral(
        uint256 tokenAmount,
        uint256 ratio,
        uint256 unitPrice
    ) external view returns (uint256 minimum);

    function getDebtAsEth(address account, address fxToken)
        external
        view
        returns (uint256 debt);

    function getTotalCollateralBalanceAsEth(address account, address fxToken)
        external
        view
        returns (uint256 balance);

    function getCurrentRatio(address account, address fxToken)
        external
        view
        returns (uint256 ratio);

    function getCollateralForAmount(
        address account,
        address fxToken,
        uint256 amountEth
    )
        external
        view
        returns (
            address[] memory collateralTypes,
            uint256[] memory collateralAmounts,
            bool metAmount
        );

    function getDecimalsAmount(
        uint256 amount,
        uint8 fromDecimals,
        uint8 toDecimals
    ) external pure returns (uint256);

    function calculateInterest(address account, address fxToken)
        external
        view
        returns (uint256 interest);

    function getInterestRate(address account, address fxToken)
        external
        view
        returns (uint256 rate);

    function getInterestDeltaR(address account, address fxToken)
        external
        view
        returns (uint256 dR);

    function getLiquidationFee(address account, address fxToken)
        external
        view
        returns (uint256 fee);

    function getCollateralShares(address account, address fxToken)
        external
        view
        returns (uint256[] memory shares);

    function getCollateralTypesSortedByLiquidationRank()
        external
        view
        returns (address[] memory sortedCollateralTypes);

    function getNewMinimumRatio(
        address account,
        address fxToken,
        address collateralToken,
        uint256 collateralAmount,
        uint256 collateralQuote,
        bool isDeposit
    ) external view returns (uint256 ratio, uint256 newCollateralAsEther);

    function canMint(
        address account,
        address fxToken,
        address collateralToken,
        uint256 collateralAmount,
        uint256 tokenAmount,
        uint256 fxQuote,
        uint256 collateralQuote
    ) external view returns (bool);

    function quickSort(
        uint256[] memory array,
        int256 left,
        int256 right
    ) external pure;

    function getTokenUnit(address token) external view returns (uint256);
}

File 10 of 26 : ITreasury.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

interface ITreasury {
    function depositCollateral(
        address account,
        uint256 depositAmount,
        address collateralType,
        address fxToken,
        address referral
    ) external;

    function depositCollateralETH(
        address account,
        address fxToken,
        address referral
    ) external payable;

    function withdrawCollateral(
        address collateralToken,
        address to,
        uint256 amount,
        address fxToken
    ) external;

    function withdrawCollateralETH(
        address to,
        uint256 amount,
        address fxToken
    ) external;

    function withdrawCollateralFrom(
        address from,
        address collateralToken,
        address to,
        uint256 amount,
        address fxToken
    ) external;

    function forceWithdrawCollateral(
        address from,
        address collateralToken,
        address to,
        uint256 amount,
        address fxToken
    ) external;

    function forceWithdrawAnyCollateral(
        address from,
        address to,
        uint256 amount,
        address fxToken,
        bool requireFullAmount
    )
        external
        returns (
            address[] memory collateralTypes,
            uint256[] memory collateralAmounts
        );

    function requestFundsPCT(address token, uint256 amount) external;

    function setMaximumTotalDepositAllowed(uint256 value) external;
}

File 11 of 26 : IfxToken.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface IfxToken is IERC20 {
    function mint(address account, uint256 amount) external;

    function burn(address account, uint256 amount) external;
}

File 12 of 26 : IValidator.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

interface IValidator {
    modifier dueBy(uint256 date) {
        require(block.timestamp <= date, "Transaction has exceeded deadline");
        _;
    }

    modifier validAddress(address _address) {
        require(_address != address(0), "Invalid Address");
        _;
    }
}

File 13 of 26 : IWETH.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

interface IWETH {
    function deposit() external payable;

    function transfer(address to, uint256 value) external returns (bool);

    function withdraw(uint256) external;
}

File 14 of 26 : IHandle.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

pragma abicoder v2;

interface IHandle {
    struct Vault {
        // Collateral token address => balance
        mapping(address => uint256) collateralBalance;
        uint256 debt;
        // Collateral token address => R0
        mapping(address => uint256) R0;
    }

    struct CollateralData {
        uint256 mintCR;
        uint256 liquidationFee;
        uint256 interestRate;
    }

    event UpdateDebt(address indexed account, address indexed fxToken);

    event UpdateCollateral(
        address indexed account,
        address indexed fxToken,
        address indexed collateralToken
    );

    event ConfigureCollateralToken(address indexed collateralToken);

    event ConfigureFxToken(address indexed fxToken, bool removed);

    function setCollateralUpperBoundPCT(uint256 ratio) external;

    function setPaused(bool value) external;

    function setFxToken(address token) external;

    function removeFxToken(address token) external;

    function setCollateralToken(
        address token,
        uint256 mintCR,
        uint256 liquidationFee,
        uint256 interestRatePerMille
    ) external;

    function removeCollateralToken(address token) external;

    function getAllCollateralTypes()
        external
        view
        returns (address[] memory collateral);

    function getCollateralDetails(address collateral)
        external
        view
        returns (CollateralData memory);

    function WETH() external view returns (address);

    function treasury() external view returns (address payable);

    function comptroller() external view returns (address);

    function vaultLibrary() external view returns (address);

    function fxKeeperPool() external view returns (address);

    function pct() external view returns (address);

    function liquidator() external view returns (address);

    function interest() external view returns (address);

    function referral() external view returns (address);

    function forex() external view returns (address);

    function rewards() external view returns (address);

    function pctCollateralUpperBound() external view returns (uint256);

    function isFxTokenValid(address fxToken) external view returns (bool);

    function isCollateralValid(address collateral) external view returns (bool);

    function setComponents(address[] memory components) external;

    function updateDebtPosition(
        address account,
        uint256 amount,
        address fxToken,
        bool increase
    ) external;

    function updateCollateralBalance(
        address account,
        uint256 amount,
        address fxToken,
        address collateralToken,
        bool increase
    ) external;

    function setFeeRecipient(address feeRecipient) external;

    function setFees(
        uint256 withdrawFeePerMille,
        uint256 depositFeePerMille,
        uint256 mintFeePerMille,
        uint256 burnFeePerMille
    ) external;

    function getCollateralBalance(
        address account,
        address collateralType,
        address fxToken
    ) external view returns (uint256 balance);

    function getBalance(address account, address fxToken)
        external
        view
        returns (address[] memory collateral, uint256[] memory balances);

    function getDebt(address owner, address fxToken)
        external
        view
        returns (uint256 _debt);

    function getPrincipalDebt(address owner, address fxToken)
        external
        view
        returns (uint256 _debt);

    function getCollateralR0(
        address account,
        address fxToken,
        address collateral
    ) external view returns (uint256 R0);

    function getTokenPrice(address token) external view returns (uint256 quote);

    function setOracle(address fxToken, address oracle) external;

    function FeeRecipient() external view returns (address);

    function mintFeePerMille() external view returns (uint256);

    function burnFeePerMille() external view returns (uint256);

    function withdrawFeePerMille() external view returns (uint256);

    function depositFeePerMille() external view returns (uint256);

    function isPaused() external view returns (bool);
}

File 15 of 26 : IInterest.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
pragma abicoder v2;

interface IInterest {
    struct ExternalAssetData {
        bytes32 makerDaoCollateralIlk;
    }

    function setCollateralExternalAssetData(
        address collateral,
        bytes32 makerDaoCollateralIlk
    ) external;

    function unsetCollateralExternalAssetData(address collateral) external;

    function setMaxExternalSourceInterest(uint256 interestPerMille) external;

    function charge() external;

    function getCurrentR()
        external
        view
        returns (uint256[] memory R, address[] memory collateralTokens);

    function setDataSource(address source) external;

    function tryUpdateRates() external;

    function updateRates() external;

    function fetchRate(address token) external view returns (uint256);
}

File 16 of 26 : IReferral.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
pragma abicoder v2;

interface IReferral {
    function setReferral(address userAccount, address referralAccount) external;

    function getReferral(address userAccount) external view returns (address);
}

File 17 of 26 : IRewardPool.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
pragma abicoder v2;

import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

/**
 * @dev Established pool categories to be used internally by the
 * protocol for the users.
 * This enum is used to get the correct pool ID from the pool alias
 * which consists of an fxToken address and a category number.
 */
enum RewardPoolCategory {Mint, Deposit, Keeper}

interface IRewardPool {
    /** Reward category e.g. Keepers or Liquidity Providers */
    struct Pool {
        // Pool reward weight. The amount of FOREX allocated to this
        // category is given by the ratio of this weight to the sum of all
        // weights for enabled pools.
        // A category is enabled if the weight is not zero.
        uint256 weight;
        // Asset is used for pools that require token staking,
        // such as LP tokens. Could be e.g. None, ERC20 or ERC721.
        AssetType assetType;
        // For pools with no token (AssetType::None), this value is zero.
        address assetAddress;
        // If AssetType == None, whitelist with this map from staker address.
        mapping(address => bool) stakerWhitelist;
        // Account -> Deposit
        mapping(address => Deposit) deposits;
        // Total amount deposited.
        uint256 totalDeposits;
        // Current pool reward ratio over total deposits.
        uint256 S;
    }

    /** Reward pool deposit for tracking user contributions */
    struct Deposit {
        // Amount contributed.
        // e.g. for Keepers, the total amount staked.
        //      for minters, the total amount minted.
        //      for LPs, the total liquidity provided.
        uint256 amount;
        // Reward ratio over total deposits during deposit.
        uint256 S;
    }

    enum AssetType {None, ERC20, ERC721}

    event Stake(address indexed account, uint256 poolId, uint256 amount);

    event Unstake(address indexed account, uint256 poolId, uint256 amount);

    event CreatePool(
        uint256 id,
        AssetType assetType,
        address asset,
        uint256 weight
    );

    event SetPoolWeights(uint256[] poolIds, uint256[] weights);

    event SetFxTokenWeights(address[] fxTokens, uint256[] weights);

    event ForexDistributed(
        uint256 duration,
        uint256 rate,
        uint256 totalAmount,
        uint256[] poolIds,
        uint256[] amounts
    );

    event SetForexDistributionRate(uint256 ratePerSecond);

    event Claim(
        address indexed acount,
        uint256 amount,
        uint256[] poolIds,
        uint256[] amounts
    );

    event WhitelistChanged(address staker, uint256 poolId, bool whitelisted);

    event PoolAliasChanged(uint256 poolId, bytes32 aliasHash);

    function stake(
        address account,
        uint256 value,
        uint256 poolId
    ) external returns (uint256 errorCode);

    function unstake(
        address account,
        uint256 value,
        uint256 poolId
    ) external returns (uint256 errorCode);

    function claim() external;

    function distribute() external;

    function createPool(
        uint256 weight,
        AssetType assetType,
        address assetAddress,
        uint256[] memory poolIds,
        uint256[] memory weights
    ) external;

    function setupPools(
        AssetType[] memory assetTypes,
        address[] memory assetAddresses,
        uint256[] memory weights,
        bytes32[] memory aliases
    ) external;

    // Used to enable and disable pools.
    // To disable, a weight must be set to zero.
    // Will emit events accordingly.
    function setPools(uint256[] memory poolIds, uint256[] memory weights)
        external;

    function setWhitelistedStaker(
        address staker,
        uint256 poolId,
        bool isWhitelisted
    ) external;

    function setForexDistributionRate(uint256 rate) external;

    function setPoolAlias(bytes32 hash, uint256 poolId) external;

    function getPoolsData()
        external
        view
        returns (
            uint256[] memory poolRatios,
            uint256[] memory accruedAmounts,
            uint256[] memory deltaS
        );

    function getPoolIdByAlias(bytes32 hash)
        external
        view
        returns (bool found, uint256 poolId);

    function getFxTokenPoolAlias(address token, uint256 category)
        external
        view
        returns (bytes32);

    // Return allowed parameters only (no mappings)
    // because Solidity is a Special Snowflake (tm)
    function getPool(uint256 poolId)
        external
        view
        returns (
            uint256 weight,
            AssetType assetType,
            address assetAddress,
            uint256 totalDeposits,
            uint256 S
        );

    function getDeposit(address account, uint256 poolId)
        external
        view
        returns (Deposit memory);

    function balanceOf(address account) external view returns (uint256 balance);

    function forex() external view returns (IERC20);
}

File 18 of 26 : HandlePausable.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
pragma abicoder v2;

import "../interfaces/Bank/IHandle.sol";
import "../interfaces/Bank/IHandleComponent.sol";

abstract contract HandlePausable is IHandleComponent {
    function handleAddress() public view virtual override returns (address);

    modifier notPaused() {
        require(!IHandle(handleAddress()).isPaused(), "Paused");
        _;
    }
}

File 19 of 26 : ERC1967UpgradeUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.2;

import "../beacon/IBeaconUpgradeable.sol";
import "../../utils/AddressUpgradeable.sol";
import "../../utils/StorageSlotUpgradeable.sol";
import "../utils/Initializable.sol";

/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 *
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
abstract contract ERC1967UpgradeUpgradeable is Initializable {
    function __ERC1967Upgrade_init() internal initializer {
        __ERC1967Upgrade_init_unchained();
    }

    function __ERC1967Upgrade_init_unchained() internal initializer {
    }
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(AddressUpgradeable.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(
        address newImplementation,
        bytes memory data,
        bool forceCall
    ) internal {
        _upgradeTo(newImplementation);
        if (data.length > 0 || forceCall) {
            _functionDelegateCall(newImplementation, data);
        }
    }

    /**
     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCallSecure(
        address newImplementation,
        bytes memory data,
        bool forceCall
    ) internal {
        address oldImplementation = _getImplementation();

        // Initial upgrade and setup call
        _setImplementation(newImplementation);
        if (data.length > 0 || forceCall) {
            _functionDelegateCall(newImplementation, data);
        }

        // Perform rollback test if not already in progress
        StorageSlotUpgradeable.BooleanSlot storage rollbackTesting = StorageSlotUpgradeable.getBooleanSlot(_ROLLBACK_SLOT);
        if (!rollbackTesting.value) {
            // Trigger rollback using upgradeTo from the new implementation
            rollbackTesting.value = true;
            _functionDelegateCall(
                newImplementation,
                abi.encodeWithSignature("upgradeTo(address)", oldImplementation)
            );
            rollbackTesting.value = false;
            // Check rollback was effective
            require(oldImplementation == _getImplementation(), "ERC1967Upgrade: upgrade breaks further upgrades");
            // Finally reset to the new implementation and log the upgrade
            _upgradeTo(newImplementation);
        }
    }

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Returns the current admin.
     */
    function _getAdmin() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        require(newAdmin != address(0), "ERC1967: new admin is the zero address");
        StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     */
    function _changeAdmin(address newAdmin) internal {
        emit AdminChanged(_getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

    /**
     * @dev Emitted when the beacon is upgraded.
     */
    event BeaconUpgraded(address indexed beacon);

    /**
     * @dev Returns the current beacon.
     */
    function _getBeacon() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        require(AddressUpgradeable.isContract(newBeacon), "ERC1967: new beacon is not a contract");
        require(
            AddressUpgradeable.isContract(IBeaconUpgradeable(newBeacon).implementation()),
            "ERC1967: beacon implementation is not a contract"
        );
        StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value = newBeacon;
    }

    /**
     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
     *
     * Emits a {BeaconUpgraded} event.
     */
    function _upgradeBeaconToAndCall(
        address newBeacon,
        bytes memory data,
        bool forceCall
    ) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);
        if (data.length > 0 || forceCall) {
            _functionDelegateCall(IBeaconUpgradeable(newBeacon).implementation(), data);
        }
    }

    /**
     * @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) private returns (bytes memory) {
        require(AddressUpgradeable.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 AddressUpgradeable.verifyCallResult(success, returndata, "Address: low-level delegate call failed");
    }
    uint256[50] private __gap;
}

File 20 of 26 : IBeaconUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeaconUpgradeable {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}

File 21 of 26 : AddressUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @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;
        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");

        (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");

        (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");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal 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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 22 of 26 : StorageSlotUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlotUpgradeable {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        assembly {
            r.slot := slot
        }
    }
}

File 23 of 26 : ContextUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract ContextUpgradeable is Initializable {
    function __Context_init() internal initializer {
        __Context_init_unchained();
    }

    function __Context_init_unchained() internal initializer {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
    uint256[50] private __gap;
}

File 24 of 26 : IERC20.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

File 25 of 26 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
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;
        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");

        (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");

        (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");

        (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");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal 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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 26 of 26 : IHandleComponent.sol
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
pragma abicoder v2;

interface IHandleComponent {
    function setHandleContract(address hanlde) external;

    function handleAddress() external view returns (address);
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract ABI

[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"beacon","type":"address"}],"name":"BeaconUpgraded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"amountBurned","type":"uint256"},{"indexed":true,"internalType":"address","name":"token","type":"address"}],"name":"BurnToken","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"tokenRate","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amountMinted","type":"uint256"},{"indexed":true,"internalType":"address","name":"token","type":"address"}],"name":"MintToken","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"handleAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"minimumMintingAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenAmount","type":"uint256"},{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"collateralToken","type":"address"},{"internalType":"uint256","name":"collateralAmount","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"address","name":"referral","type":"address"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenAmount","type":"uint256"},{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"address","name":"referral","type":"address"}],"name":"mintWithEth","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenAmount","type":"uint256"},{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"address","name":"referral","type":"address"}],"name":"mintWithoutCollateral","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_handle","type":"address"}],"name":"setHandleContract","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"setMinimumMintingAmount","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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