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// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.17;

import '../stores/DataStore.sol';
import '../stores/FundStore.sol';
import '../stores/RewardStore.sol';

import '../utils/Chainlink.sol';
import '../utils/Roles.sol';

/**
 * @title  Rewards
 * @notice Implementation of rewards related logic
 */
contract Rewards is Roles {

    // Constants
    uint256 public constant UNIT = 10 ** 18;
    uint256 public constant BPS_DIVIDER = 10000;

    // Events
    event RewardIncremented(
        address indexed user,
        address indexed token,
        uint256 amount
    );
    event RewardClaimed(
        address indexed user,
        address indexed token,
        uint256 amount
    );

    // Contracts
    DataStore public DS;

    FundStore public fundStore;
    RewardStore public rewardStore;

    Chainlink public chainlink;

    address constant TOKEN = 0x912CE59144191C1204E64559FE8253a0e49E6548; // ARB
    address constant TOKEN_CHAINLINK_FEED = 0xb2A824043730FE05F3DA2efaFa1CBbe83fa548D6;

    uint256 public lastDailyReset;
    uint256 public dailyRewards;

    uint256 public feeBps = 1000;
    uint256 public maxDailyReward = 3000 * UNIT;

    /// @dev Initializes DataStore address
    constructor(RoleStore rs, DataStore ds) Roles(rs) {
        DS = ds;
    }

    /// @notice Initializes protocol contracts
    /// @dev Only callable by governance
    function link() external onlyGov {
        fundStore = FundStore(payable(DS.getAddress('FundStore')));
        rewardStore = RewardStore(DS.getAddress('RewardStore'));
        chainlink = Chainlink(DS.getAddress('Chainlink'));
    }

    function setFeeBps(uint256 bps) external onlyGov {
        require(bps < BPS_DIVIDER, '!bps');
        feeBps = bps;
    }

    function setMaxDailyReward(uint256 amount) external onlyGov {
        maxDailyReward = amount;
    }

    /// @notice Increases reward for a given user based on the fee they paid
    /// @dev Only callable by other protocol contracts
    function incrementReward(address user, uint256 feeUsd) public onlyContract {
        if (feeBps == 0) return;
        uint256 chainlinkPrice = chainlink.getPrice(TOKEN_CHAINLINK_FEED);
        uint256 amount = UNIT * feeUsd * feeBps / (chainlinkPrice * BPS_DIVIDER);
        
        if (lastDailyReset == 0) {
            lastDailyReset = block.timestamp;
        }
        if (lastDailyReset < block.timestamp - 1 days) {
            dailyRewards = 0;
            lastDailyReset = block.timestamp;
        }
        
        if (dailyRewards > maxDailyReward) return;

        dailyRewards += amount;

        rewardStore.incrementReward(user, TOKEN, amount);

        emit RewardIncremented(
            user,
            TOKEN,
            amount
        );
    }

    function claimReward() external {
        address user = msg.sender;
        uint256 userReward = rewardStore.getReward(user, TOKEN);
        if (userReward == 0) return;
        rewardStore.decrementReward(user, TOKEN, userReward);
        fundStore.transferOut(TOKEN, user, userReward);
        emit RewardClaimed(
            user,
            TOKEN,
            userReward
        );
    }

}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface AggregatorV3Interface {
  function decimals() external view returns (uint8);

  function description() external view returns (string memory);

  function version() external view returns (uint256);

  function getRoundData(uint80 _roundId)
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );

  function latestRoundData()
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @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 ReentrancyGuard {
    // 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;

    constructor() {
        _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 making 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;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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);

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/draft-IERC20Permit.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));
        }
    }

    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @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");
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @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
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 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
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/structs/EnumerableSet.sol)

pragma solidity ^0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 *
 * [WARNING]
 * ====
 *  Trying to delete such a structure from storage will likely result in data corruption, rendering the structure unusable.
 *  See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
 *
 *  In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an array of EnumerableSet.
 * ====
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;
        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping(bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) {
            // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            if (lastIndex != toDeleteIndex) {
                bytes32 lastValue = set._values[lastIndex];

                // Move the last value to the index where the value to delete is
                set._values[toDeleteIndex] = lastValue;
                // Update the index for the moved value
                set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex
            }

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        return set._values[index];
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function _values(Set storage set) private view returns (bytes32[] memory) {
        return set._values;
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
        return _values(set._inner);
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(AddressSet storage set) internal view returns (address[] memory) {
        bytes32[] memory store = _values(set._inner);
        address[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(UintSet storage set) internal view returns (uint256[] memory) {
        bytes32[] memory store = _values(set._inner);
        uint256[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.17;

import '../utils/Governable.sol';

/// @title DataStore
/// @notice General purpose storage contract
/// @dev Access is restricted to governance
contract DataStore is Governable {
    // Key-value stores
    mapping(bytes32 => uint256) public uintValues;
    mapping(bytes32 => int256) public intValues;
    mapping(bytes32 => address) public addressValues;
    mapping(bytes32 => bytes32) public dataValues;
    mapping(bytes32 => bool) public boolValues;
    mapping(bytes32 => string) public stringValues;

    constructor() Governable() {}

    /// @param key The key for the record
    /// @param value value to store
    /// @param overwrite Overwrites existing value if set to true
    function setUint(string calldata key, uint256 value, bool overwrite) external onlyGov returns (bool) {
        bytes32 hash = getHash(key);
        if (overwrite || uintValues[hash] == 0) {
            uintValues[hash] = value;
            return true;
        }
        return false;
    }

    /// @param key The key for the record
    function getUint(string calldata key) external view returns (uint256) {
        return uintValues[getHash(key)];
    }

    /// @param key The key for the record
    /// @param value value to store
    /// @param overwrite Overwrites existing value if set to true
    function setInt(string calldata key, int256 value, bool overwrite) external onlyGov returns (bool) {
        bytes32 hash = getHash(key);
        if (overwrite || intValues[hash] == 0) {
            intValues[hash] = value;
            return true;
        }
        return false;
    }

    /// @param key The key for the record
    function getInt(string calldata key) external view returns (int256) {
        return intValues[getHash(key)];
    }

    /// @param key The key for the record
    /// @param value address to store
    /// @param overwrite Overwrites existing value if set to true
    function setAddress(string calldata key, address value, bool overwrite) external onlyGov returns (bool) {
        bytes32 hash = getHash(key);
        if (overwrite || addressValues[hash] == address(0)) {
            addressValues[hash] = value;
            return true;
        }
        return false;
    }

    /// @param key The key for the record
    function getAddress(string calldata key) external view returns (address) {
        return addressValues[getHash(key)];
    }

    /// @param key The key for the record
    /// @param value byte value to store
    function setData(string calldata key, bytes32 value) external onlyGov returns (bool) {
        dataValues[getHash(key)] = value;
        return true;
    }

    /// @param key The key for the record
    function getData(string calldata key) external view returns (bytes32) {
        return dataValues[getHash(key)];
    }

    /// @param key The key for the record
    /// @param value value to store (true / false)
    function setBool(string calldata key, bool value) external onlyGov returns (bool) {
        boolValues[getHash(key)] = value;
        return true;
    }

    /// @param key The key for the record
    function getBool(string calldata key) external view returns (bool) {
        return boolValues[getHash(key)];
    }

    /// @param key The key for the record
    /// @param value string to store
    function setString(string calldata key, string calldata value) external onlyGov returns (bool) {
        stringValues[getHash(key)] = value;
        return true;
    }

    /// @param key The key for the record
    function getString(string calldata key) external view returns (string memory) {
        return stringValues[getHash(key)];
    }

    /// @param key string to hash
    function getHash(string memory key) public pure returns (bytes32) {
        return keccak256(abi.encodePacked(key));
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.17;

import '@openzeppelin/contracts/security/ReentrancyGuard.sol';
import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';

import '../utils/Roles.sol';

/// @title FundStore
/// @notice Storage of protocol funds
contract FundStore is Roles, ReentrancyGuard {
    // Libraries
    using SafeERC20 for IERC20;
    using Address for address payable;

    constructor(RoleStore rs) Roles(rs) {}

    /// @notice Transfers `amount` of `asset` in
    /// @dev Only callable by other protocol contracts
    /// @param asset Asset address, e.g. address(0) for ETH
    /// @param from Address where asset is transferred from
    function transferIn(address asset, address from, uint256 amount) external payable onlyContract {
        if (amount == 0 || asset == address(0)) return;
        IERC20(asset).safeTransferFrom(from, address(this), amount);
    }

    /// @notice Transfers `amount` of `asset` out
    /// @dev Only callable by other protocol contracts
    /// @param asset Asset address, e.g. address(0) for ETH
    /// @param to Address where asset is transferred to
    function transferOut(address asset, address to, uint256 amount) external nonReentrant onlyContract {
        if (amount == 0 || to == address(0)) return;
        if (asset == address(0)) {
            payable(to).sendValue(amount);
        } else {
            IERC20(asset).safeTransfer(to, amount);
        }
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.17;

import '../utils/Roles.sol';

/// @title RewardStore
/// @notice Storage of reward data per user and token
contract RewardStore is Roles {

    // user => token => amount
    mapping(address => mapping(address => uint256)) private rewards;

    constructor(RoleStore rs) Roles(rs) {}

    function incrementReward(address user, address token, uint256 amount) external onlyContract {
        rewards[user][token] += amount;
    }

    function decrementReward(address user, address token, uint256 amount) external onlyContract {
        rewards[user][token] = rewards[user][token] <= amount ? 0 : rewards[user][token] - amount;
    }

    function getReward(address user, address token) external view returns (uint256) {
        return rewards[user][token];
    }

}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.17;

import '@openzeppelin/contracts/utils/structs/EnumerableSet.sol';
import '../utils/Governable.sol';

/**
 * @title  RoleStore
 * @notice Role-based access control mechanism. Governance can grant and
 *         revoke roles dynamically via {grantRole} and {revokeRole}
 */
contract RoleStore is Governable {
    // Libraries
    using EnumerableSet for EnumerableSet.AddressSet;
    using EnumerableSet for EnumerableSet.Bytes32Set;

    // Set of roles
    EnumerableSet.Bytes32Set internal roles;

    // Role -> address
    mapping(bytes32 => EnumerableSet.AddressSet) internal roleMembers;

    constructor() Governable() {}

    /// @notice Grants `role` to `account`
    /// @dev Only callable by governance
    function grantRole(address account, bytes32 role) external onlyGov {
        // add role if not already present
        if (!roles.contains(role)) roles.add(role);

        require(roleMembers[role].add(account));
    }

    /// @notice Revokes `role` from `account`
    /// @dev Only callable by governance
    function revokeRole(address account, bytes32 role) external onlyGov {
        require(roleMembers[role].remove(account));

        // Remove role if it has no longer any members
        if (roleMembers[role].length() == 0) {
            roles.remove(role);
        }
    }

    /// @notice Returns `true` if `account` has been granted `role`
    function hasRole(address account, bytes32 role) external view returns (bool) {
        return roleMembers[role].contains(account);
    }

    /// @notice Returns number of roles
    function getRoleCount() external view returns (uint256) {
        return roles.length();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;

import '@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol';

/// @title Chainlink
/// @notice Consumes price data
contract Chainlink {
    // -- Constants -- //
    uint256 public constant UNIT = 10 ** 18;
    uint256 public constant GRACE_PERIOD_TIME = 3600;
    uint256 public constant RATE_STALE_PERIOD = 86400;

    // -- Variables -- //
    AggregatorV3Interface internal sequencerUptimeFeed;

    // -- Errors -- //
    error SequencerDown();
    error GracePeriodNotOver();
    error StaleRate();

    /**
     * For a list of available sequencer proxy addresses, see:
     * https://docs.chain.link/docs/l2-sequencer-flag/#available-networks
     */

    // -- Constructor -- //
    constructor() {
        // Arbitrum L2 sequencer feed
        sequencerUptimeFeed = AggregatorV3Interface(0xFdB631F5EE196F0ed6FAa767959853A9F217697D);
    }

    // Returns the latest price
    function getPrice(address feed) public view returns (uint256) {
        if (feed == address(0)) return 0;

        // prettier-ignore
        (
            /*uint80 roundID*/,
            int256 answer,
            uint256 startedAt,
            /*uint256 updatedAt*/,
            /*uint80 answeredInRound*/
        ) = sequencerUptimeFeed.latestRoundData();

        // Answer == 0: Sequencer is up
        // Answer == 1: Sequencer is down
        bool isSequencerUp = answer == 0;
        if (!isSequencerUp) {
            revert SequencerDown();
        }

        // Make sure the grace period has passed after the sequencer is back up.
        uint256 timeSinceUp = block.timestamp - startedAt;

        if (timeSinceUp <= GRACE_PERIOD_TIME) {
            revert GracePeriodNotOver();
        }

        AggregatorV3Interface priceFeed = AggregatorV3Interface(feed);

        // prettier-ignore
        (
            /*uint80 roundID*/, 
            int price, 
            /*uint startedAt*/,
            uint256 updatedAt, 
            /*uint80 answeredInRound*/
        ) = priceFeed.latestRoundData();

        if (updatedAt < block.timestamp - RATE_STALE_PERIOD) {
            revert StaleRate();
        }

        uint8 decimals = priceFeed.decimals();

        // Return 18 decimals standard
        return (uint256(price) * UNIT) / 10 ** decimals;
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.17;

/// @title Governable
/// @notice Basic access control mechanism, gov has access to certain functions
contract Governable {
    address public gov;

    event SetGov(address prevGov, address nextGov);

    /// @dev Initializes the contract setting the deployer address as governance
    constructor() {
        _setGov(msg.sender);
    }

    /// @dev Reverts if called by any account other than gov
    modifier onlyGov() {
        require(msg.sender == gov, '!gov');
        _;
    }

    /// @notice Sets a new governance address
    /// @dev Only callable by governance
    function setGov(address _gov) external onlyGov {
        _setGov(_gov);
    }

    /// @notice Sets a new governance address
    /// @dev Internal function without access restriction
    function _setGov(address _gov) internal {
        address prevGov = gov;
        gov = _gov;
        emit SetGov(prevGov, _gov);
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.17;

import './Governable.sol';
import '../stores/RoleStore.sol';

/// @title Roles
/// @notice Role-based access control mechanism via onlyContract modifier
contract Roles is Governable {
    bytes32 public constant CONTRACT = keccak256('CONTRACT');

    RoleStore public roleStore;

    /// @dev Initializes roleStore address
    constructor(RoleStore rs) Governable() {
        roleStore = rs;
    }

    /// @dev Reverts if caller address has not the contract role
    modifier onlyContract() {
        require(roleStore.hasRole(msg.sender, CONTRACT), '!contract-role');
        _;
    }
}

{
  "viaIR": true,
  "optimizer": {
    "enabled": true,
    "runs": 100
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

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000000000000000000000000e5da4704a582fe799dcd1dff31dc2ed2e0bdc961000000000000000000000000a64694e51b22a081ea1e4051ef4ea1b715b47026

-----Decoded View---------------
Arg [0] : rs (address): 0xe5DA4704a582Fe799dcd1dFF31dc2eD2e0BdC961
Arg [1] : ds (address): 0xa64694E51B22A081EA1e4051EF4EA1b715b47026

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000e5da4704a582fe799dcd1dff31dc2ed2e0bdc961
Arg [1] : 000000000000000000000000a64694e51b22a081ea1e4051ef4ea1b715b47026