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// SPDX-License-Identifier: MIT
pragma solidity =0.8.4;

import {SafeMath} from "@openzeppelin/contracts/utils/math/SafeMath.sol";
import {
    IPriceOracle
} from "@ribbon-finance/rvol/contracts/interfaces/IPriceOracle.sol";
import {IOptionsPremiumPricer} from "../interfaces/IRibbon.sol";
import {
    IManualVolatilityOracle
} from "@ribbon-finance/rvol/contracts/interfaces/IManualVolatilityOracle.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import {Vault} from "../libraries/Vault.sol";

contract PercentStrikeSelection is Ownable {
    using SafeMath for uint256;

    /**
     * Immutables
     */
    IOptionsPremiumPricer public immutable optionsPremiumPricer;

    // step in absolute terms at which we will increment
    // (ex: 100 * 10 ** assetOracleDecimals means we will move at increments of 100 points)
    uint256 public step;

    // multiplier for strike selection
    uint256 public strikeMultiplier;

    // multiplier to shift asset prices
    uint256 private immutable assetOracleMultiplier;

    // Delta are in 4 decimal places. 1 * 10**4 = 1 delta.
    uint256 private constant DELTA_MULTIPLIER = 10**4;

    // ChainLink's USD Price oracles return results in 8 decimal places
    uint256 private constant ORACLE_PRICE_MULTIPLIER = 10**8;

    // Strike multiplier has 2 decimal places. For example: 150 = 1.5x spot price
    uint256 private constant STRIKE_MULTIPLIER = 10**2;

    event StepSet(uint256 oldStep, uint256 newStep, address indexed owner);

    constructor(
        address _optionsPremiumPricer,
        uint256 _strikeMultiplier,
        uint256 _step
    ) {
        require(_optionsPremiumPricer != address(0), "!_optionsPremiumPricer");
        require(
            _strikeMultiplier > STRIKE_MULTIPLIER,
            "Multiplier must be bigger than 1!"
        );
        require(_step > 0, "!_step");

        optionsPremiumPricer = IOptionsPremiumPricer(_optionsPremiumPricer);

        // ex: delta = 7500 (.75)
        uint256 _assetOracleMultiplier =
            10 **
                IPriceOracle(
                    IOptionsPremiumPricer(_optionsPremiumPricer).priceOracle()
                )
                    .decimals();

        step = _step;

        strikeMultiplier = _strikeMultiplier;

        assetOracleMultiplier = _assetOracleMultiplier;
    }

    /**
     * @notice Gets the strike price by multiplying the current underlying price
     * with a multiplier
     * @param expiryTimestamp is the unix timestamp of expiration
     * @param isPut is whether option is put or call
     * @return newStrikePrice is the strike price of the option (ex: for BTC might be 45000 * 10 ** 8)
     * @return newDelta will be set to zero for percent strike selection
     */

    function getStrikePrice(uint256 expiryTimestamp, bool isPut)
        external
        view
        returns (uint256 newStrikePrice, uint256 newDelta)
    {
        require(
            expiryTimestamp > block.timestamp,
            "Expiry must be in the future!"
        );

        // asset price
        uint256 strikePrice =
            optionsPremiumPricer.getUnderlyingPrice().mul(strikeMultiplier).div(
                STRIKE_MULTIPLIER
            );

        newStrikePrice = isPut
            ? strikePrice.sub(strikePrice % step)
            : strikePrice.add(step.sub(strikePrice % step));

        newDelta = 0;
    }

    /**
     * @notice Set the multiplier for setting the strike price
     * @param newStrikeMultiplier is the strike multiplier (decimals = 2)
     */
    function setStrikeMultiplier(uint256 newStrikeMultiplier)
        external
        onlyOwner
    {
        require(
            newStrikeMultiplier > STRIKE_MULTIPLIER,
            "Multiplier must be bigger than 1!"
        );
        strikeMultiplier = newStrikeMultiplier;
    }

    /**
     * @notice Sets new step value
     * @param newStep is the new step value
     */
    function setStep(uint256 newStep) external onlyOwner {
        require(newStep > 0, "!newStep");
        uint256 oldStep = step;
        step = newStep;
        emit StepSet(oldStep, newStep, msg.sender);
    }
}

// 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;
        }
    }
}

//SPDX-License-Identifier: GPL-3.0
pragma solidity >0.6.0 <0.8.7;

interface IPriceOracle {
    function decimals() external view returns (uint256 _decimals);

    function latestAnswer() external view returns (uint256 price);
}

// SPDX-License-Identifier: MIT
pragma solidity =0.8.4;
import {Vault} from "../libraries/Vault.sol";

interface IRibbonVault {
    function deposit(uint256 amount) external;

    function depositETH() external payable;

    function cap() external view returns (uint256);

    function depositFor(uint256 amount, address creditor) external;

    function vaultParams() external view returns (Vault.VaultParams memory);
}

interface IStrikeSelection {
    function getStrikePrice(uint256 expiryTimestamp, bool isPut)
        external
        view
        returns (uint256, uint256);

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

interface IOptionsPremiumPricer {
    function getPremium(
        uint256 strikePrice,
        uint256 timeToExpiry,
        bool isPut
    ) external view returns (uint256);

    function getPremiumInStables(
        uint256 strikePrice,
        uint256 timeToExpiry,
        bool isPut
    ) external view returns (uint256);

    function getOptionDelta(
        uint256 spotPrice,
        uint256 strikePrice,
        uint256 volatility,
        uint256 expiryTimestamp
    ) external view returns (uint256 delta);

    function getUnderlyingPrice() external view returns (uint256);

    function priceOracle() external view returns (address);

    function volatilityOracle() external view returns (address);

    function optionId() external view returns (bytes32);
}

//SPDX-License-Identifier: GPL-3.0
pragma solidity >0.6.0 <0.8.7;

interface IManualVolatilityOracle {
    function vol(bytes32 optionId)
        external
        view
        returns (uint256 standardDeviation);

    function annualizedVol(bytes32 optionId)
        external
        view
        returns (uint256 annualStdev);

    function setAnnualizedVol(
        bytes32[] calldata optionIds,
        uint256[] calldata newAnnualizedVols
    ) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/Context.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 Ownable is Context {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _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);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity =0.8.4;

library Vault {
    /************************************************
     *  IMMUTABLES & CONSTANTS
     ***********************************************/

    // Fees are 6-decimal places. For example: 20 * 10**6 = 20%
    uint256 internal constant FEE_MULTIPLIER = 10**6;

    // Premium discount has 1-decimal place. For example: 80 * 10**1 = 80%. Which represents a 20% discount.
    uint256 internal constant PREMIUM_DISCOUNT_MULTIPLIER = 10;

    // Otokens have 8 decimal places.
    uint256 internal constant OTOKEN_DECIMALS = 8;

    // Percentage of funds allocated to options is 2 decimal places. 10 * 10**2 = 10%
    uint256 internal constant OPTION_ALLOCATION_MULTIPLIER = 10**2;

    // Placeholder uint value to prevent cold writes
    uint256 internal constant PLACEHOLDER_UINT = 1;

    struct VaultParams {
        // Option type the vault is selling
        bool isPut;
        // Token decimals for vault shares
        uint8 decimals;
        // Asset used in Theta / Delta Vault
        address asset;
        // Underlying asset of the options sold by vault
        address underlying;
        // Minimum supply of the vault shares issued, for ETH it's 10**10
        uint56 minimumSupply;
        // Vault cap
        uint104 cap;
    }

    struct OptionState {
        // Option that the vault is shorting / longing in the next cycle
        address nextOption;
        // Option that the vault is currently shorting / longing
        address currentOption;
        // The timestamp when the `nextOption` can be used by the vault
        uint32 nextOptionReadyAt;
    }

    struct VaultState {
        // 32 byte slot 1
        //  Current round number. `round` represents the number of `period`s elapsed.
        uint16 round;
        // Amount that is currently locked for selling options
        uint104 lockedAmount;
        // Amount that was locked for selling options in the previous round
        // used for calculating performance fee deduction
        uint104 lastLockedAmount;
        // 32 byte slot 2
        // Stores the total tally of how much of `asset` there is
        // to be used to mint rTHETA tokens
        uint128 totalPending;
        // Total amount of queued withdrawal shares from previous rounds (doesn't include the current round)
        uint128 queuedWithdrawShares;
    }

    struct DepositReceipt {
        // Maximum of 65535 rounds. Assuming 1 round is 7 days, maximum is 1256 years.
        uint16 round;
        // Deposit amount, max 20,282,409,603,651 or 20 trillion ETH deposit
        uint104 amount;
        // Unredeemed shares balance
        uint128 unredeemedShares;
    }

    struct Withdrawal {
        // Maximum of 65535 rounds. Assuming 1 round is 7 days, maximum is 1256 years.
        uint16 round;
        // Number of shares withdrawn
        uint128 shares;
    }

    struct AuctionSellOrder {
        // Amount of `asset` token offered in auction
        uint96 sellAmount;
        // Amount of oToken requested in auction
        uint96 buyAmount;
        // User Id of delta vault in latest gnosis auction
        uint64 userId;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @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 Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

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

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[{"inputs":[{"internalType":"address","name":"_optionsPremiumPricer","type":"address"},{"internalType":"uint256","name":"_strikeMultiplier","type":"uint256"},{"internalType":"uint256","name":"_step","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"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":false,"internalType":"uint256","name":"oldStep","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newStep","type":"uint256"},{"indexed":true,"internalType":"address","name":"owner","type":"address"}],"name":"StepSet","type":"event"},{"inputs":[{"internalType":"uint256","name":"expiryTimestamp","type":"uint256"},{"internalType":"bool","name":"isPut","type":"bool"}],"name":"getStrikePrice","outputs":[{"internalType":"uint256","name":"newStrikePrice","type":"uint256"},{"internalType":"uint256","name":"newDelta","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"optionsPremiumPricer","outputs":[{"internalType":"contract IOptionsPremiumPricer","name":"","type":"address"}],"stateMutability":"view","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":"uint256","name":"newStep","type":"uint256"}],"name":"setStep","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newStrikeMultiplier","type":"uint256"}],"name":"setStrikeMultiplier","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"step","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"strikeMultiplier","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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0000000000000000000000008bbe98240a2e4aae3c9b4aa9639740eb17125b68000000000000000000000000000000000000000000000000000000000000007d00000000000000000000000000000000000000000000000000000000001e8480

-----Decoded View---------------
Arg [0] : _optionsPremiumPricer (address): 0x8BBE98240A2e4Aae3c9b4Aa9639740eB17125b68
Arg [1] : _strikeMultiplier (uint256): 125
Arg [2] : _step (uint256): 2000000

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 0000000000000000000000008bbe98240a2e4aae3c9b4aa9639740eb17125b68
Arg [1] : 000000000000000000000000000000000000000000000000000000000000007d
Arg [2] : 00000000000000000000000000000000000000000000000000000000001e8480