// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

interface IBasket {
    function BURN_FEE() external view returns (bytes32);

    function DEFAULT_ADMIN_ROLE() external view returns (bytes32);

    function FEE_DIVISOR() external view returns (uint256);

    function FEE_RECIPIENT() external view returns (bytes32);

    function GOVERNANCE() external view returns (bytes32);

    function GOVERNANCE_ADMIN() external view returns (bytes32);

    function INITIALIZED() external view returns (bytes32);

    function MARKET_MAKER() external view returns (bytes32);

    function MARKET_MAKER_ADMIN() external view returns (bytes32);

    function MIGRATOR() external view returns (bytes32);

    function MINT_FEE() external view returns (bytes32);

    function TIMELOCK() external view returns (bytes32);

    function TIMELOCK_ADMIN() external view returns (bytes32);

    function allowance(address owner, address spender) external view returns (uint256);

    function approve(address spender, uint256 amount) external returns (bool);

    function approveModule(address _module) external;

    function approvedModules(address) external view returns (bool);

    function assets(uint256) external view returns (address);

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

    function burn(uint256 _amount) external;

    function decimals() external view returns (uint8);

    function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool);

    function getAssetsAndBalances() external view returns (address[] memory, uint256[] memory);

    function getFees()
        external
        view
        returns (
            uint256,
            uint256,
            address
        );

    function getOne() external view returns (address[] memory, uint256[] memory);

    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    function getRoleMember(bytes32 role, uint256 index) external view returns (address);

    function getRoleMemberCount(bytes32 role) external view returns (uint256);

    function grantRole(bytes32 role, address account) external;

    function hasRole(bytes32 role, address account) external view returns (bool);

    function increaseAllowance(address spender, uint256 addedValue) external returns (bool);

    function mint(uint256 _amountOut) external;

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

    function pause() external;

    function paused() external view returns (bool);

    function renounceRole(bytes32 role, address account) external;

    function rescueERC20(address _asset, uint256 _amount) external;

    function revokeModule(address _module) external;

    function revokeRole(bytes32 role, address account) external;

    function setAssets(address[] memory _assets) external;

    function setFee(
        uint256 _mintFee,
        uint256 _burnFee,
        address _recipient
    ) external;

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

    function totalSupply() external view returns (uint256);

    function transfer(address recipient, uint256 amount) external returns (bool);

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    function unpause() external;

    function viewMint(uint256 _amountOut) external view returns (uint256[] memory _amountsIn);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.3;

interface IComptroller {
    function _addCompMarkets(address[] memory cTokens) external;

    function _become(address unitroller) external;

    function _borrowGuardianPaused() external view returns (bool);

    function _dropCompMarket(address cToken) external;

    function _grantComp(address recipient, uint256 amount) external;

    function _mintGuardianPaused() external view returns (bool);

    function _setBorrowCapGuardian(address newBorrowCapGuardian) external;

    function _setBorrowPaused(address cToken, bool state) external returns (bool);

    function _setCloseFactor(uint256 newCloseFactorMantissa) external returns (uint256);

    function _setCollateralFactor(address cToken, uint256 newCollateralFactorMantissa) external returns (uint256);

    function _setCompRate(uint256 compRate_) external;

    function _setContributorCompSpeed(address contributor, uint256 compSpeed) external;

    function _setLiquidationIncentive(uint256 newLiquidationIncentiveMantissa) external returns (uint256);

    function _setMarketBorrowCaps(address[] memory cTokens, uint256[] memory newBorrowCaps) external;

    function _setMintPaused(address cToken, bool state) external returns (bool);

    function _setPauseGuardian(address newPauseGuardian) external returns (uint256);

    function _setPriceOracle(address newOracle) external returns (uint256);

    function _setSeizePaused(bool state) external returns (bool);

    function _setTransferPaused(bool state) external returns (bool);

    function _supportMarket(address cToken) external returns (uint256);

    function accountAssets(address, uint256) external view returns (address);

    function admin() external view returns (address);

    function allMarkets(uint256) external view returns (address);

    function borrowAllowed(
        address cToken,
        address borrower,
        uint256 borrowAmount
    ) external returns (uint256);

    function borrowCapGuardian() external view returns (address);

    function borrowCaps(address) external view returns (uint256);

    function borrowGuardianPaused(address) external view returns (bool);

    function borrowVerify(
        address cToken,
        address borrower,
        uint256 borrowAmount
    ) external;

    function checkMembership(address account, address cToken) external view returns (bool);

    function claimComp(address holder, address[] memory cTokens) external;

    function claimComp(
        address[] memory holders,
        address[] memory cTokens,
        bool borrowers,
        bool suppliers
    ) external;

    function claimComp(address holder) external;

    function closeFactorMantissa() external view returns (uint256);

    function compAccrued(address) external view returns (uint256);

    function compBorrowState(address) external view returns (uint224 index, uint32);

    function compBorrowerIndex(address, address) external view returns (uint256);

    function compClaimThreshold() external view returns (uint256);

    function compContributorSpeeds(address) external view returns (uint256);

    function compInitialIndex() external view returns (uint224);

    function compRate() external view returns (uint256);

    function compSpeeds(address) external view returns (uint256);

    function compSupplierIndex(address, address) external view returns (uint256);

    function compSupplyState(address) external view returns (uint224 index, uint32);

    function comptrollerImplementation() external view returns (address);

    function enterMarkets(address[] memory cTokens) external returns (uint256[] memory);

    function exitMarket(address cTokenAddress) external returns (uint256);

    function getAccountLiquidity(address account)
        external
        view
        returns (
            uint256,
            uint256,
            uint256
        );

    function getAllMarkets() external view returns (address[] memory);

    function getAssetsIn(address account) external view returns (address[] memory);

    function getBlockNumber() external view returns (uint256);

    function getCompAddress() external view returns (address);

    function getHypotheticalAccountLiquidity(
        address account,
        address cTokenModify,
        uint256 redeemTokens,
        uint256 borrowAmount
    )
        external
        view
        returns (
            uint256,
            uint256,
            uint256
        );

    function isComptroller() external view returns (bool);

    function lastContributorBlock(address) external view returns (uint256);

    function liquidateBorrowAllowed(
        address cTokenBorrowed,
        address cTokenCollateral,
        address liquidator,
        address borrower,
        uint256 repayAmount
    ) external returns (uint256);

    function liquidateBorrowVerify(
        address cTokenBorrowed,
        address cTokenCollateral,
        address liquidator,
        address borrower,
        uint256 actualRepayAmount,
        uint256 seizeTokens
    ) external;

    function liquidateCalculateSeizeTokens(
        address cTokenBorrowed,
        address cTokenCollateral,
        uint256 actualRepayAmount
    ) external view returns (uint256, uint256);

    function liquidationIncentiveMantissa() external view returns (uint256);

    function markets(address)
        external
        view
        returns (
            bool isListed,
            uint256 collateralFactorMantissa,
            bool isComped
        );

    function maxAssets() external view returns (uint256);

    function mintAllowed(
        address cToken,
        address minter,
        uint256 mintAmount
    ) external returns (uint256);

    function mintGuardianPaused(address) external view returns (bool);

    function mintVerify(
        address cToken,
        address minter,
        uint256 actualMintAmount,
        uint256 mintTokens
    ) external;

    function oracle() external view returns (address);

    function pauseGuardian() external view returns (address);

    function pendingAdmin() external view returns (address);

    function pendingComptrollerImplementation() external view returns (address);

    function redeemAllowed(
        address cToken,
        address redeemer,
        uint256 redeemTokens
    ) external returns (uint256);

    function redeemVerify(
        address cToken,
        address redeemer,
        uint256 redeemAmount,
        uint256 redeemTokens
    ) external;

    function refreshCompSpeeds() external;

    function repayBorrowAllowed(
        address cToken,
        address payer,
        address borrower,
        uint256 repayAmount
    ) external returns (uint256);

    function repayBorrowVerify(
        address cToken,
        address payer,
        address borrower,
        uint256 actualRepayAmount,
        uint256 borrowerIndex
    ) external;

    function seizeAllowed(
        address cTokenCollateral,
        address cTokenBorrowed,
        address liquidator,
        address borrower,
        uint256 seizeTokens
    ) external returns (uint256);

    function seizeGuardianPaused() external view returns (bool);

    function seizeVerify(
        address cTokenCollateral,
        address cTokenBorrowed,
        address liquidator,
        address borrower,
        uint256 seizeTokens
    ) external;

    function transferAllowed(
        address cToken,
        address src,
        address dst,
        uint256 transferTokens
    ) external returns (uint256);

    function transferGuardianPaused() external view returns (bool);

    function transferVerify(
        address cToken,
        address src,
        address dst,
        uint256 transferTokens
    ) external;

    function updateContributorRewards(address contributor) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

/**
 * @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);

    function decimals() external view returns (uint8);

    function name() external view returns (string memory);
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;
pragma experimental ABIEncoderV2;

/// @title Permissionless pool actions
/// @notice Contains pool methods that can be called by anyone
interface IUniswapV3PoolActions {
    /// @notice Sets the initial price for the pool
    /// @dev Price is represented as a sqrt(amountToken1/amountToken0) Q64.96 value
    /// @param sqrtPriceX96 the initial sqrt price of the pool as a Q64.96
    function initialize(uint160 sqrtPriceX96) external;

    /// @notice Adds liquidity for the given recipient/tickLower/tickUpper position
    /// @dev The caller of this method receives a callback in the form of IUniswapV3MintCallback#uniswapV3MintCallback
    /// in which they must pay any token0 or token1 owed for the liquidity. The amount of token0/token1 due depends
    /// on tickLower, tickUpper, the amount of liquidity, and the current price.
    /// @param recipient The address for which the liquidity will be created
    /// @param tickLower The lower tick of the position in which to add liquidity
    /// @param tickUpper The upper tick of the position in which to add liquidity
    /// @param amount The amount of liquidity to mint
    /// @param data Any data that should be passed through to the callback
    /// @return amount0 The amount of token0 that was paid to mint the given amount of liquidity. Matches the value in the callback
    /// @return amount1 The amount of token1 that was paid to mint the given amount of liquidity. Matches the value in the callback
    function mint(
        address recipient,
        int24 tickLower,
        int24 tickUpper,
        uint128 amount,
        bytes calldata data
    ) external returns (uint256 amount0, uint256 amount1);

    /// @notice Collects tokens owed to a position
    /// @dev Does not recompute fees earned, which must be done either via mint or burn of any amount of liquidity.
    /// Collect must be called by the position owner. To withdraw only token0 or only token1, amount0Requested or
    /// amount1Requested may be set to zero. To withdraw all tokens owed, caller may pass any value greater than the
    /// actual tokens owed, e.g. type(uint128).max. Tokens owed may be from accumulated swap fees or burned liquidity.
    /// @param recipient The address which should receive the fees collected
    /// @param tickLower The lower tick of the position for which to collect fees
    /// @param tickUpper The upper tick of the position for which to collect fees
    /// @param amount0Requested How much token0 should be withdrawn from the fees owed
    /// @param amount1Requested How much token1 should be withdrawn from the fees owed
    /// @return amount0 The amount of fees collected in token0
    /// @return amount1 The amount of fees collected in token1
    function collect(
        address recipient,
        int24 tickLower,
        int24 tickUpper,
        uint128 amount0Requested,
        uint128 amount1Requested
    ) external returns (uint128 amount0, uint128 amount1);

    /// @notice Burn liquidity from the sender and account tokens owed for the liquidity to the position
    /// @dev Can be used to trigger a recalculation of fees owed to a position by calling with an amount of 0
    /// @dev Fees must be collected separately via a call to #collect
    /// @param tickLower The lower tick of the position for which to burn liquidity
    /// @param tickUpper The upper tick of the position for which to burn liquidity
    /// @param amount How much liquidity to burn
    /// @return amount0 The amount of token0 sent to the recipient
    /// @return amount1 The amount of token1 sent to the recipient
    function burn(
        int24 tickLower,
        int24 tickUpper,
        uint128 amount
    ) external returns (uint256 amount0, uint256 amount1);

    /// @notice Swap token0 for token1, or token1 for token0
    /// @dev The caller of this method receives a callback in the form of IUniswapV3SwapCallback#uniswapV3SwapCallback
    /// @param recipient The address to receive the output of the swap
    /// @param zeroForOne The direction of the swap, true for token0 to token1, false for token1 to token0
    /// @param amountSpecified The amount of the swap, which implicitly configures the swap as exact input (positive), or exact output (negative)
    /// @param sqrtPriceLimitX96 The Q64.96 sqrt price limit. If zero for one, the price cannot be less than this
    /// value after the swap. If one for zero, the price cannot be greater than this value after the swap
    /// @param data Any data to be passed through to the callback
    /// @return amount0 The delta of the balance of token0 of the pool, exact when negative, minimum when positive
    /// @return amount1 The delta of the balance of token1 of the pool, exact when negative, minimum when positive
    function swap(
        address recipient,
        bool zeroForOne,
        int256 amountSpecified,
        uint160 sqrtPriceLimitX96,
        bytes calldata data
    ) external returns (int256 amount0, int256 amount1);

    /// @notice Receive token0 and/or token1 and pay it back, plus a fee, in the callback
    /// @dev The caller of this method receives a callback in the form of IUniswapV3FlashCallback#uniswapV3FlashCallback
    /// @dev Can be used to donate underlying tokens pro-rata to currently in-range liquidity providers by calling
    /// with 0 amount{0,1} and sending the donation amount(s) from the callback
    /// @param recipient The address which will receive the token0 and token1 amounts
    /// @param amount0 The amount of token0 to send
    /// @param amount1 The amount of token1 to send
    /// @param data Any data to be passed through to the callback
    function flash(
        address recipient,
        uint256 amount0,
        uint256 amount1,
        bytes calldata data
    ) external;

    /// @notice Increase the maximum number of price and liquidity observations that this pool will store
    /// @dev This method is no-op if the pool already has an observationCardinalityNext greater than or equal to
    /// the input observationCardinalityNext.
    /// @param observationCardinalityNext The desired minimum number of observations for the pool to store
    function increaseObservationCardinalityNext(uint16 observationCardinalityNext) external;
}

/// @title Pool state that is not stored
/// @notice Contains view functions to provide information about the pool that is computed rather than stored on the
/// blockchain. The functions here may have variable gas costs.
interface IUniswapV3PoolDerivedState {
    /// @notice Returns the cumulative tick and liquidity as of each timestamp `secondsAgo` from the current block timestamp
    /// @dev To get a time weighted average tick or liquidity-in-range, you must call this with two values, one representing
    /// the beginning of the period and another for the end of the period. E.g., to get the last hour time-weighted average tick,
    /// you must call it with secondsAgos = [3600, 0].
    /// @dev The time weighted average tick represents the geometric time weighted average price of the pool, in
    /// log base sqrt(1.0001) of token1 / token0. The TickMath library can be used to go from a tick value to a ratio.
    /// @param secondsAgos From how long ago each cumulative tick and liquidity value should be returned
    /// @return tickCumulatives Cumulative tick values as of each `secondsAgos` from the current block timestamp
    /// @return secondsPerLiquidityCumulativeX128s Cumulative seconds per liquidity-in-range value as of each `secondsAgos` from the current block
    /// timestamp
    function observe(uint32[] calldata secondsAgos)
        external
        view
        returns (int56[] memory tickCumulatives, uint160[] memory secondsPerLiquidityCumulativeX128s);

    /// @notice Returns a snapshot of the tick cumulative, seconds per liquidity and seconds inside a tick range
    /// @dev Snapshots must only be compared to other snapshots, taken over a period for which a position existed.
    /// I.e., snapshots cannot be compared if a position is not held for the entire period between when the first
    /// snapshot is taken and the second snapshot is taken.
    /// @param tickLower The lower tick of the range
    /// @param tickUpper The upper tick of the range
    /// @return tickCumulativeInside The snapshot of the tick accumulator for the range
    /// @return secondsPerLiquidityInsideX128 The snapshot of seconds per liquidity for the range
    /// @return secondsInside The snapshot of seconds per liquidity for the range
    function snapshotCumulativesInside(int24 tickLower, int24 tickUpper)
        external
        view
        returns (
            int56 tickCumulativeInside,
            uint160 secondsPerLiquidityInsideX128,
            uint32 secondsInside
        );
}

/// @title Events emitted by a pool
/// @notice Contains all events emitted by the pool
interface IUniswapV3PoolEvents {
    /// @notice Emitted exactly once by a pool when #initialize is first called on the pool
    /// @dev Mint/Burn/Swap cannot be emitted by the pool before Initialize
    /// @param sqrtPriceX96 The initial sqrt price of the pool, as a Q64.96
    /// @param tick The initial tick of the pool, i.e. log base 1.0001 of the starting price of the pool
    event Initialize(uint160 sqrtPriceX96, int24 tick);

    /// @notice Emitted when liquidity is minted for a given position
    /// @param sender The address that minted the liquidity
    /// @param owner The owner of the position and recipient of any minted liquidity
    /// @param tickLower The lower tick of the position
    /// @param tickUpper The upper tick of the position
    /// @param amount The amount of liquidity minted to the position range
    /// @param amount0 How much token0 was required for the minted liquidity
    /// @param amount1 How much token1 was required for the minted liquidity
    event Mint(
        address sender,
        address indexed owner,
        int24 indexed tickLower,
        int24 indexed tickUpper,
        uint128 amount,
        uint256 amount0,
        uint256 amount1
    );

    /// @notice Emitted when fees are collected by the owner of a position
    /// @dev Collect events may be emitted with zero amount0 and amount1 when the caller chooses not to collect fees
    /// @param owner The owner of the position for which fees are collected
    /// @param tickLower The lower tick of the position
    /// @param tickUpper The upper tick of the position
    /// @param amount0 The amount of token0 fees collected
    /// @param amount1 The amount of token1 fees collected
    event Collect(
        address indexed owner,
        address recipient,
        int24 indexed tickLower,
        int24 indexed tickUpper,
        uint128 amount0,
        uint128 amount1
    );

    /// @notice Emitted when a position's liquidity is removed
    /// @dev Does not withdraw any fees earned by the liquidity position, which must be withdrawn via #collect
    /// @param owner The owner of the position for which liquidity is removed
    /// @param tickLower The lower tick of the position
    /// @param tickUpper The upper tick of the position
    /// @param amount The amount of liquidity to remove
    /// @param amount0 The amount of token0 withdrawn
    /// @param amount1 The amount of token1 withdrawn
    event Burn(
        address indexed owner,
        int24 indexed tickLower,
        int24 indexed tickUpper,
        uint128 amount,
        uint256 amount0,
        uint256 amount1
    );

    /// @notice Emitted by the pool for any swaps between token0 and token1
    /// @param sender The address that initiated the swap call, and that received the callback
    /// @param recipient The address that received the output of the swap
    /// @param amount0 The delta of the token0 balance of the pool
    /// @param amount1 The delta of the token1 balance of the pool
    /// @param sqrtPriceX96 The sqrt(price) of the pool after the swap, as a Q64.96
    /// @param liquidity The liquidity of the pool after the swap
    /// @param tick The log base 1.0001 of price of the pool after the swap
    event Swap(
        address indexed sender,
        address indexed recipient,
        int256 amount0,
        int256 amount1,
        uint160 sqrtPriceX96,
        uint128 liquidity,
        int24 tick
    );

    /// @notice Emitted by the pool for any flashes of token0/token1
    /// @param sender The address that initiated the swap call, and that received the callback
    /// @param recipient The address that received the tokens from flash
    /// @param amount0 The amount of token0 that was flashed
    /// @param amount1 The amount of token1 that was flashed
    /// @param paid0 The amount of token0 paid for the flash, which can exceed the amount0 plus the fee
    /// @param paid1 The amount of token1 paid for the flash, which can exceed the amount1 plus the fee
    event Flash(
        address indexed sender,
        address indexed recipient,
        uint256 amount0,
        uint256 amount1,
        uint256 paid0,
        uint256 paid1
    );

    /// @notice Emitted by the pool for increases to the number of observations that can be stored
    /// @dev observationCardinalityNext is not the observation cardinality until an observation is written at the index
    /// just before a mint/swap/burn.
    /// @param observationCardinalityNextOld The previous value of the next observation cardinality
    /// @param observationCardinalityNextNew The updated value of the next observation cardinality
    event IncreaseObservationCardinalityNext(
        uint16 observationCardinalityNextOld,
        uint16 observationCardinalityNextNew
    );

    /// @notice Emitted when the protocol fee is changed by the pool
    /// @param feeProtocol0Old The previous value of the token0 protocol fee
    /// @param feeProtocol1Old The previous value of the token1 protocol fee
    /// @param feeProtocol0New The updated value of the token0 protocol fee
    /// @param feeProtocol1New The updated value of the token1 protocol fee
    event SetFeeProtocol(uint8 feeProtocol0Old, uint8 feeProtocol1Old, uint8 feeProtocol0New, uint8 feeProtocol1New);

    /// @notice Emitted when the collected protocol fees are withdrawn by the factory owner
    /// @param sender The address that collects the protocol fees
    /// @param recipient The address that receives the collected protocol fees
    /// @param amount0 The amount of token0 protocol fees that is withdrawn
    /// @param amount0 The amount of token1 protocol fees that is withdrawn
    event CollectProtocol(address indexed sender, address indexed recipient, uint128 amount0, uint128 amount1);
}

/// @title Pool state that never changes
/// @notice These parameters are fixed for a pool forever, i.e., the methods will always return the same values
interface IUniswapV3PoolImmutables {
    /// @notice The contract that deployed the pool, which must adhere to the IUniswapV3Factory interface
    /// @return The contract address
    function factory() external view returns (address);

    /// @notice The first of the two tokens of the pool, sorted by address
    /// @return The token contract address
    function token0() external view returns (address);

    /// @notice The second of the two tokens of the pool, sorted by address
    /// @return The token contract address
    function token1() external view returns (address);

    /// @notice The pool's fee in hundredths of a bip, i.e. 1e-6
    /// @return The fee
    function fee() external view returns (uint24);

    /// @notice The pool tick spacing
    /// @dev Ticks can only be used at multiples of this value, minimum of 1 and always positive
    /// e.g.: a tickSpacing of 3 means ticks can be initialized every 3rd tick, i.e., ..., -6, -3, 0, 3, 6, ...
    /// This value is an int24 to avoid casting even though it is always positive.
    /// @return The tick spacing
    function tickSpacing() external view returns (int24);

    /// @notice The maximum amount of position liquidity that can use any tick in the range
    /// @dev This parameter is enforced per tick to prevent liquidity from overflowing a uint128 at any point, and
    /// also prevents out-of-range liquidity from being used to prevent adding in-range liquidity to a pool
    /// @return The max amount of liquidity per tick
    function maxLiquidityPerTick() external view returns (uint128);
}

/// @title Permissioned pool actions
/// @notice Contains pool methods that may only be called by the factory owner
interface IUniswapV3PoolOwnerActions {
    /// @notice Set the denominator of the protocol's % share of the fees
    /// @param feeProtocol0 new protocol fee for token0 of the pool
    /// @param feeProtocol1 new protocol fee for token1 of the pool
    function setFeeProtocol(uint8 feeProtocol0, uint8 feeProtocol1) external;

    /// @notice Collect the protocol fee accrued to the pool
    /// @param recipient The address to which collected protocol fees should be sent
    /// @param amount0Requested The maximum amount of token0 to send, can be 0 to collect fees in only token1
    /// @param amount1Requested The maximum amount of token1 to send, can be 0 to collect fees in only token0
    /// @return amount0 The protocol fee collected in token0
    /// @return amount1 The protocol fee collected in token1
    function collectProtocol(
        address recipient,
        uint128 amount0Requested,
        uint128 amount1Requested
    ) external returns (uint128 amount0, uint128 amount1);
}

/// @title Pool state that can change
/// @notice These methods compose the pool's state, and can change with any frequency including multiple times
/// per transaction
interface IUniswapV3PoolState {
    /// @notice The 0th storage slot in the pool stores many values, and is exposed as a single method to save gas
    /// when accessed externally.
    /// @return sqrtPriceX96 The current price of the pool as a sqrt(token1/token0) Q64.96 value
    /// tick The current tick of the pool, i.e. according to the last tick transition that was run.
    /// This value may not always be equal to SqrtTickMath.getTickAtSqrtRatio(sqrtPriceX96) if the price is on a tick
    /// boundary.
    /// observationIndex The index of the last oracle observation that was written,
    /// observationCardinality The current maximum number of observations stored in the pool,
    /// observationCardinalityNext The next maximum number of observations, to be updated when the observation.
    /// feeProtocol The protocol fee for both tokens of the pool.
    /// Encoded as two 4 bit values, where the protocol fee of token1 is shifted 4 bits and the protocol fee of token0
    /// is the lower 4 bits. Used as the denominator of a fraction of the swap fee, e.g. 4 means 1/4th of the swap fee.
    /// unlocked Whether the pool is currently locked to reentrancy
    function slot0()
        external
        view
        returns (
            uint160 sqrtPriceX96,
            int24 tick,
            uint16 observationIndex,
            uint16 observationCardinality,
            uint16 observationCardinalityNext,
            uint8 feeProtocol,
            bool unlocked
        );

    /// @notice The fee growth as a Q128.128 fees of token0 collected per unit of liquidity for the entire life of the pool
    /// @dev This value can overflow the uint256
    function feeGrowthGlobal0X128() external view returns (uint256);

    /// @notice The fee growth as a Q128.128 fees of token1 collected per unit of liquidity for the entire life of the pool
    /// @dev This value can overflow the uint256
    function feeGrowthGlobal1X128() external view returns (uint256);

    /// @notice The amounts of token0 and token1 that are owed to the protocol
    /// @dev Protocol fees will never exceed uint128 max in either token
    function protocolFees() external view returns (uint128 token0, uint128 token1);

    /// @notice The currently in range liquidity available to the pool
    /// @dev This value has no relationship to the total liquidity across all ticks
    function liquidity() external view returns (uint128);

    /// @notice Look up information about a specific tick in the pool
    /// @param tick The tick to look up
    /// @return liquidityGross the total amount of position liquidity that uses the pool either as tick lower or
    /// tick upper,
    /// liquidityNet how much liquidity changes when the pool price crosses the tick,
    /// feeGrowthOutside0X128 the fee growth on the other side of the tick from the current tick in token0,
    /// feeGrowthOutside1X128 the fee growth on the other side of the tick from the current tick in token1,
    /// tickCumulativeOutside the cumulative tick value on the other side of the tick from the current tick
    /// secondsPerLiquidityOutsideX128 the seconds spent per liquidity on the other side of the tick from the current tick,
    /// secondsOutside the seconds spent on the other side of the tick from the current tick,
    /// initialized Set to true if the tick is initialized, i.e. liquidityGross is greater than 0, otherwise equal to false.
    /// Outside values can only be used if the tick is initialized, i.e. if liquidityGross is greater than 0.
    /// In addition, these values are only relative and must be used only in comparison to previous snapshots for
    /// a specific position.
    function ticks(int24 tick)
        external
        view
        returns (
            uint128 liquidityGross,
            int128 liquidityNet,
            uint256 feeGrowthOutside0X128,
            uint256 feeGrowthOutside1X128,
            int56 tickCumulativeOutside,
            uint160 secondsPerLiquidityOutsideX128,
            uint32 secondsOutside,
            bool initialized
        );

    /// @notice Returns 256 packed tick initialized boolean values. See TickBitmap for more information
    function tickBitmap(int16 wordPosition) external view returns (uint256);

    /// @notice Returns the information about a position by the position's key
    /// @param key The position's key is a hash of a preimage composed by the owner, tickLower and tickUpper
    /// @return _liquidity The amount of liquidity in the position,
    /// Returns feeGrowthInside0LastX128 fee growth of token0 inside the tick range as of the last mint/burn/poke,
    /// Returns feeGrowthInside1LastX128 fee growth of token1 inside the tick range as of the last mint/burn/poke,
    /// Returns tokensOwed0 the computed amount of token0 owed to the position as of the last mint/burn/poke,
    /// Returns tokensOwed1 the computed amount of token1 owed to the position as of the last mint/burn/poke
    function positions(bytes32 key)
        external
        view
        returns (
            uint128 _liquidity,
            uint256 feeGrowthInside0LastX128,
            uint256 feeGrowthInside1LastX128,
            uint128 tokensOwed0,
            uint128 tokensOwed1
        );

    /// @notice Returns data about a specific observation index
    /// @param index The element of the observations array to fetch
    /// @dev You most likely want to use #observe() instead of this method to get an observation as of some amount of time
    /// ago, rather than at a specific index in the array.
    /// @return blockTimestamp The timestamp of the observation,
    /// Returns tickCumulative the tick multiplied by seconds elapsed for the life of the pool as of the observation timestamp,
    /// Returns secondsPerLiquidityCumulativeX128 the seconds per in range liquidity for the life of the pool as of the observation timestamp,
    /// Returns initialized whether the observation has been initialized and the values are safe to use
    function observations(uint256 index)
        external
        view
        returns (
            uint32 blockTimestamp,
            int56 tickCumulative,
            uint160 secondsPerLiquidityCumulativeX128,
            bool initialized
        );
}

/// @title The interface for a Uniswap V3 Pool
/// @notice A Uniswap pool facilitates swapping and automated market making between any two assets that strictly conform
/// to the ERC20 specification
/// @dev The pool interface is broken up into many smaller pieces
interface IUniswapV3Pool is
    IUniswapV3PoolImmutables,
    IUniswapV3PoolState,
    IUniswapV3PoolDerivedState,
    IUniswapV3PoolActions,
    IUniswapV3PoolOwnerActions,
    IUniswapV3PoolEvents
{

}

/// @title The interface for the Uniswap V3 Factory
/// @notice The Uniswap V3 Factory facilitates creation of Uniswap V3 pools and control over the protocol fees
interface IUniswapV3Factory {
    /// @notice Emitted when the owner of the factory is changed
    /// @param oldOwner The owner before the owner was changed
    /// @param newOwner The owner after the owner was changed
    event OwnerChanged(address indexed oldOwner, address indexed newOwner);

    /// @notice Emitted when a pool is created
    /// @param token0 The first token of the pool by address sort order
    /// @param token1 The second token of the pool by address sort order
    /// @param fee The fee collected upon every swap in the pool, denominated in hundredths of a bip
    /// @param tickSpacing The minimum number of ticks between initialized ticks
    /// @param pool The address of the created pool
    event PoolCreated(
        address indexed token0,
        address indexed token1,
        uint24 indexed fee,
        int24 tickSpacing,
        address pool
    );

    /// @notice Emitted when a new fee amount is enabled for pool creation via the factory
    /// @param fee The enabled fee, denominated in hundredths of a bip
    /// @param tickSpacing The minimum number of ticks between initialized ticks for pools created with the given fee
    event FeeAmountEnabled(uint24 indexed fee, int24 indexed tickSpacing);

    /// @notice Returns the current owner of the factory
    /// @dev Can be changed by the current owner via setOwner
    /// @return The address of the factory owner
    function owner() external view returns (address);

    /// @notice Returns the tick spacing for a given fee amount, if enabled, or 0 if not enabled
    /// @dev A fee amount can never be removed, so this value should be hard coded or cached in the calling context
    /// @param fee The enabled fee, denominated in hundredths of a bip. Returns 0 in case of unenabled fee
    /// @return The tick spacing
    function feeAmountTickSpacing(uint24 fee) external view returns (int24);

    /// @notice Returns the pool address for a given pair of tokens and a fee, or address 0 if it does not exist
    /// @dev tokenA and tokenB may be passed in either token0/token1 or token1/token0 order
    /// @param tokenA The contract address of either token0 or token1
    /// @param tokenB The contract address of the other token
    /// @param fee The fee collected upon every swap in the pool, denominated in hundredths of a bip
    /// @return pool The pool address
    function getPool(
        address tokenA,
        address tokenB,
        uint24 fee
    ) external view returns (address pool);

    /// @notice Creates a pool for the given two tokens and fee
    /// @param tokenA One of the two tokens in the desired pool
    /// @param tokenB The other of the two tokens in the desired pool
    /// @param fee The desired fee for the pool
    /// @dev tokenA and tokenB may be passed in either order: token0/token1 or token1/token0. tickSpacing is retrieved
    /// from the fee. The call will revert if the pool already exists, the fee is invalid, or the token arguments
    /// are invalid.
    /// @return pool The address of the newly created pool
    function createPool(
        address tokenA,
        address tokenB,
        uint24 fee
    ) external returns (address pool);

    /// @notice Updates the owner of the factory
    /// @dev Must be called by the current owner
    /// @param _owner The new owner of the factory
    function setOwner(address _owner) external;

    /// @notice Enables a fee amount with the given tickSpacing
    /// @dev Fee amounts may never be removed once enabled
    /// @param fee The fee amount to enable, denominated in hundredths of a bip (i.e. 1e-6)
    /// @param tickSpacing The spacing between ticks to be enforced for all pools created with the given fee amount
    function enableFeeAmount(uint24 fee, int24 tickSpacing) external;
}

/// @title An interface for a contract that is capable of deploying Uniswap V3 Pools
/// @notice A contract that constructs a pool must implement this to pass arguments to the pool
/// @dev This is used to avoid having constructor arguments in the pool contract, which results in the init code hash
/// of the pool being constant allowing the CREATE2 address of the pool to be cheaply computed on-chain
interface IUniswapV3PoolDeployer {
    /// @notice Get the parameters to be used in constructing the pool, set transiently during pool creation.
    /// @dev Called by the pool constructor to fetch the parameters of the pool
    /// Returns factory The factory address
    /// Returns token0 The first token of the pool by address sort order
    /// Returns token1 The second token of the pool by address sort order
    /// Returns fee The fee collected upon every swap in the pool, denominated in hundredths of a bip
    /// Returns tickSpacing The minimum number of ticks between initialized ticks
    function parameters()
        external
        view
        returns (
            address factory,
            address token0,
            address token1,
            uint24 fee,
            int24 tickSpacing
        );
}

interface IUniswapV3Quoter {
    function WETH9() external view returns (address);

    function factory() external view returns (address);

    function quoteExactInput(bytes memory path, uint256 amountIn) external returns (uint256 amountOut);

    function quoteExactInputSingle(
        address tokenIn,
        address tokenOut,
        uint24 fee,
        uint256 amountIn,
        uint160 sqrtPriceLimitX96
    ) external returns (uint256 amountOut);

    function quoteExactOutput(bytes memory path, uint256 amountOut) external returns (uint256 amountIn);

    function quoteExactOutputSingle(
        address tokenIn,
        address tokenOut,
        uint24 fee,
        uint256 amountOut,
        uint160 sqrtPriceLimitX96
    ) external returns (uint256 amountIn);

    function uniswapV3SwapCallback(
        int256 amount0Delta,
        int256 amount1Delta,
        bytes memory path
    ) external view;
}

interface IUniswapV3SwapCallback {
    /// @notice Called to `msg.sender` after executing a swap via IUniswapV3Pool#swap.
    /// @dev In the implementation you must pay the pool tokens owed for the swap.
    /// The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory.
    /// amount0Delta and amount1Delta can both be 0 if no tokens were swapped.
    /// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by
    /// the end of the swap. If positive, the callback must send that amount of token0 to the pool.
    /// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by
    /// the end of the swap. If positive, the callback must send that amount of token1 to the pool.
    /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call
    function uniswapV3SwapCallback(
        int256 amount0Delta,
        int256 amount1Delta,
        bytes calldata data
    ) external;
}

interface IUniswapV3Router is IUniswapV3SwapCallback {
    struct ExactInputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountIn;
        uint256 amountOutMinimum;
        uint160 sqrtPriceLimitX96;
    }

    /// @notice Swaps `amountIn` of one token for as much as possible of another token
    /// @param params The parameters necessary for the swap, encoded as `ExactInputSingleParams` in calldata
    /// @return amountOut The amount of the received token
    function exactInputSingle(ExactInputSingleParams calldata params) external payable returns (uint256 amountOut);

    struct ExactInputParams {
        bytes path;
        address recipient;
        uint256 deadline;
        uint256 amountIn;
        uint256 amountOutMinimum;
    }

    /// @notice Swaps `amountIn` of one token for as much as possible of another along the specified path
    /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactInputParams` in calldata
    /// @return amountOut The amount of the received token
    function exactInput(ExactInputParams calldata params) external payable returns (uint256 amountOut);

    struct ExactOutputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountOut;
        uint256 amountInMaximum;
        uint160 sqrtPriceLimitX96;
    }

    /// @notice Swaps as little as possible of one token for `amountOut` of another token
    /// @param params The parameters necessary for the swap, encoded as `ExactOutputSingleParams` in calldata
    /// @return amountIn The amount of the input token
    function exactOutputSingle(ExactOutputSingleParams calldata params) external payable returns (uint256 amountIn);

    struct ExactOutputParams {
        bytes path;
        address recipient;
        uint256 deadline;
        uint256 amountOut;
        uint256 amountInMaximum;
    }

    /// @notice Swaps as little as possible of one token for `amountOut` of another along the specified path (reversed)
    /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactOutputParams` in calldata
    /// @return amountIn The amount of the input token
    function exactOutput(ExactOutputParams calldata params) external payable returns (uint256 amountIn);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.3;

interface IWETH {
    function name() external view returns (string memory);

    function approve(address guy, uint256 wad) external returns (bool);

    function totalSupply() external view returns (uint256);

    function transferFrom(
        address src,
        address dst,
        uint256 wad
    ) external returns (bool);

    function withdraw(uint256 wad) external;

    function decimals() external view returns (uint8);

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

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

    function transfer(address dst, uint256 wad) external returns (bool);

    function deposit() external payable;

    function allowance(address, address) external view returns (uint256);
}

  
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 () internal {
        _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;
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.7.0;

import "./IERC20.sol";

library SafeERC20 {
    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        (bool success, bytes memory data) = address(token).call(
            abi.encodeWithSelector(IERC20.transferFrom.selector, from, to, value)
        );

        require(success && (data.length == 0 || abi.decode(data, (bool))), "TRANSFER_FROM_FAILED");
    }

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        (bool success, bytes memory data) = address(token).call(
            abi.encodeWithSelector(IERC20.transfer.selector, to, value)
        );

        require(success && (data.length == 0 || abi.decode(data, (bool))), "TRANSFER_FAILED");
    }

    function safeApprove(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        (bool success, bytes memory data) = address(token).call(
            abi.encodeWithSelector(IERC20.approve.selector, to, value)
        );

        require(success && (data.length == 0 || abi.decode(data, (bool))), "APPROVE_FAILED");
    }

    function safeTransferETH(address to, uint256 value) internal {
        (bool success, ) = to.call{value: value}(new bytes(0));

        require(success, "ETH_TRANSFER_FAILED");
    }
}

// SPDX-License-Identifier: AGPL-3.0-only 
pragma solidity ^0.7.0;

// a library for performing overflow-safe math, courtesy of DappHub (https://github.com/dapphub/ds-math)

library SafeMath {
    function add(uint x, uint y) internal pure returns (uint z) {
        require((z = x + y) >= x, "ds-math-add-overflow");
    }

    function sub(uint x, uint y) internal pure returns (uint z) {
        require((z = x - y) <= x, "ds-math-sub-underflow");
    }

    function mul(uint x, uint y) internal pure returns (uint z) {
        require(y == 0 || (z = x * y) / y == x, "ds-math-mul-overflow");
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "ds-math-divide-by-0");
        return a / b;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.3;
pragma experimental ABIEncoderV2;

import "./IBasket.sol";
import "./IComptroller.sol";
import "./IERC20.sol";

import "./UniswapV3.sol";
import "./SocialZapperBase.sol";

import "./SafeERC20.sol";

contract SocialBDIBurner is SocialZapperBase {
    using SafeERC20 for IERC20;
    using SafeMath for uint256;

    address internal constant UNIV3_FACTORY = address(0x1F98431c8aD98523631AE4a59f267346ea31F984);
    address internal constant UNIV2_FACTORY = address(0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f);
    address internal constant SUSHI_FACTORY = address(0xC0AEe478e3658e2610c5F7A4A2E1777cE9e4f2Ac);


    address internal constant BDI = address(0x0309c98B1bffA350bcb3F9fB9780970CA32a5060);

    address internal constant XSUSHI = 0x8798249c2E607446EfB7Ad49eC89dD1865Ff4272;

    address internal constant COMPTROLLER = 0x3d9819210A31b4961b30EF54bE2aeD79B9c9Cd3B;

    address internal constant CUNI = 0x35A18000230DA775CAc24873d00Ff85BccdeD550;
    address internal constant CCOMP = 0x70e36f6BF80a52b3B46b3aF8e106CC0ed743E8e4;

    address internal constant CURVE_LINK_POOL = 0xF178C0b5Bb7e7aBF4e12A4838C7b7c5bA2C623c0;

    address internal constant linkCRV = 0xcee60cFa923170e4f8204AE08B4fA6A3F5656F3a;
    address internal constant yvCurveLink = 0xf2db9a7c0ACd427A680D640F02d90f6186E71725;
    address internal constant yvUNI = 0xFBEB78a723b8087fD2ea7Ef1afEc93d35E8Bed42;
    address internal constant yvYFI = 0xE14d13d8B3b85aF791b2AADD661cDBd5E6097Db1;
    address internal constant yvSNX = 0xF29AE508698bDeF169B89834F76704C3B205aedf;

    // Underlyings
    address internal constant LINK = 0x514910771AF9Ca656af840dff83E8264EcF986CA;
    address internal constant CRV = 0xD533a949740bb3306d119CC777fa900bA034cd52;
    address internal constant UNI = 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984;
    address internal constant COMP = 0xc00e94Cb662C3520282E6f5717214004A7f26888;
    address internal constant YFI = 0x0bc529c00C6401aEF6D220BE8C6Ea1667F6Ad93e;
    address internal constant SNX = 0xC011a73ee8576Fb46F5E1c5751cA3B9Fe0af2a6F;
    address internal constant MKR = 0x9f8F72aA9304c8B593d555F12eF6589cC3A579A2;
    address internal constant REN = 0x408e41876cCCDC0F92210600ef50372656052a38;
    address internal constant KNC = 0xdd974D5C2e2928deA5F71b9825b8b646686BD200;
    address internal constant LRC = 0xBBbbCA6A901c926F240b89EacB641d8Aec7AEafD;
    address internal constant BAL = 0xba100000625a3754423978a60c9317c58a424e3D;
    address internal constant AAVE = 0x7Fc66500c84A76Ad7e9c93437bFc5Ac33E2DDaE9;
    address internal constant MTA = 0xa3BeD4E1c75D00fa6f4E5E6922DB7261B5E9AcD2;
    address internal constant SUSHI = 0x6B3595068778DD592e39A122f4f5a5cF09C90fE2;
    address internal constant ZRX = 0xE41d2489571d322189246DaFA5ebDe1F4699F498;

    struct SwapV3Calldata {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address[] targets;
        bytes[] data;
    }

    constructor(address _governance) SocialZapperBase(_governance, BDI) {
        // Approve all underlyings to bdi
        (address[] memory components, ) = IBasket(BDI).getOne();
        for (uint256 i = 0; i < components.length; i++) {
            IERC20(components[i]).safeApprove(BDI, type(uint256).max);
        }

        // Enter CCOMP and CUNI market on compound
        address[] memory markets = new address[](2);
        markets[0] = CCOMP;
        markets[1] = CUNI;
        IComptroller(COMPTROLLER).enterMarkets(markets);

        // Approve tokens
        IERC20(COMP).safeApprove(CCOMP, type(uint256).max);
        IERC20(UNI).safeApprove(CUNI, type(uint256).max);
        IERC20(UNI).safeApprove(yvUNI, type(uint256).max);
        IERC20(YFI).safeApprove(yvYFI, type(uint256).max);
        IERC20(SNX).safeApprove(yvSNX, type(uint256).max);
        IERC20(SUSHI).safeApprove(XSUSHI, type(uint256).max);
        IERC20(LINK).safeApprove(CURVE_LINK_POOL, type(uint256).max);
        IERC20(linkCRV).safeApprove(yvCurveLink, type(uint256).max);
    }

    function socialBurn(
        address[] memory targets,
        bytes[] memory data,
        uint256 _minRecv
    ) public onlyWeavers returns (uint256) {
        uint256 _before = IERC20(WETH).balanceOf(address(this));

        bool success;
        bytes memory m;
        for (uint256 i = 0; i < targets.length; i++) {
            (success, m) = targets[i].call(data[i]);
            require(success, string(m));
        }

        uint256 _after = IERC20(WETH).balanceOf(address(this));
        uint256 _wethRecv = _after.sub(_before);

        require(_wethRecv > _minRecv, "min-weth-recv");

        zapped[BDI][curId[BDI]] = _wethRecv;
        curId[BDI]++;

        return _wethRecv;
    }

    // UniswapV3 callback
    function uniswapV3SwapCallback(
        int256,
        int256,
        bytes calldata data
    ) external {
        SwapV3Calldata memory fsCalldata = abi.decode(data, (SwapV3Calldata));
        CallbackValidation.verifyCallback(UNIV3_FACTORY, fsCalldata.tokenIn, fsCalldata.tokenOut, fsCalldata.fee);

        bool success;
        bytes memory m;
        for (uint256 i = 0; i < fsCalldata.targets.length; i++) {
            (success, m) = fsCalldata.targets[i].call(fsCalldata.data[i]);
            require(success, string(m));
        }
    }

    /// @notice User withdraws converted Basket token
    function withdrawETH(address _token, uint256 _id) public {
        _withdrawZapped(WETH, _token, _id);
    }

    /// @notice User withdraws converted Basket token
    function withdrawETHMany(address[] memory _tokens, uint256[] memory _ids) public {
        _withdrawZappedMany(WETH, _tokens, _ids);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.3;

import "./IWETH.sol";

import "./ReentrancyGuard.sol";
import "./SafeERC20.sol";
import "./SafeMath.sol";

// Basket Weaver is a way to socialize gas costs related to minting baskets tokens
contract SocialZapperBase is ReentrancyGuard {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    address public governance;
    address public bmi;

    // **** ERC20 **** //
    address internal constant WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    // Token => Id
    mapping(address => uint256) public curId;

    // Token => User Address => Id => Amount deposited
    mapping(address => mapping(address => mapping(uint256 => uint256))) public deposits;

    // Token => User Address => Id => Claimed
    mapping(address => mapping(address => mapping(uint256 => bool))) public claimed;

    // Token => Id => Amount deposited
    mapping(address => mapping(uint256 => uint256)) public totalDeposited;

    // Token => Basket zapped per weaveId
    mapping(address => mapping(uint256 => uint256)) public zapped;

    // Approved users to call weave
    // This is v important as invalid inputs will
    // be basically a "fat finger"
    mapping(address => bool) public approvedWeavers;

    // **** Constructor and modifiers ****

    constructor(address _governance, address _bmi) {
        governance = _governance;
        bmi = _bmi;
    }

    modifier onlyGov() {
        require(msg.sender == governance, "!governance");
        _;
    }

    modifier onlyWeavers {
        require(msg.sender == governance || approvedWeavers[msg.sender], "!weaver");
        _;
    }

    receive() external payable {}

    // **** Protected functions ****

    function approveWeaver(address _weaver) public onlyGov {
        approvedWeavers[_weaver] = true;
    }

    function revokeWeaver(address _weaver) public onlyGov {
        approvedWeavers[_weaver] = false;
    }

    function setGov(address _governance) public onlyGov {
        governance = _governance;
    }

    // Emergency
    function recoverERC20(address _token) public onlyWeavers {
        IERC20(_token).safeTransfer(governance, IERC20(_token).balanceOf(address(this)));
    }

    function recoverERC20(address _token, uint256 _amount) public onlyWeavers {
        IERC20(_token).safeTransfer(governance, _amount);
    }

    // **** Public functions ****

    /// @notice Deposits ERC20 to be later converted into the Basket by some kind soul
    function deposit(address _token, uint256 _amount) public nonReentrant {
        IERC20(_token).safeTransferFrom(msg.sender, address(this), _amount);

        deposits[_token][msg.sender][curId[_token]] = deposits[_token][msg.sender][curId[_token]].add(_amount);
        totalDeposited[_token][curId[_token]] = totalDeposited[_token][curId[_token]].add(_amount);
    }

    /// @notice User doesn't want to wait anymore and just wants their ERC20 back
    function withdraw(address _token, uint256 _amount) public nonReentrant {
        // Reverts if withdrawing too many
        deposits[_token][msg.sender][curId[_token]] = deposits[_token][msg.sender][curId[_token]].sub(_amount);
        totalDeposited[_token][curId[_token]] = totalDeposited[_token][curId[_token]].sub(_amount);

        IERC20(_token).safeTransfer(msg.sender, _amount);
    }

    // **** Internal functions ****

    /// @notice User withdraws <x> token
    function _withdrawZapped(
        address _target,
        address _token,
        uint256 _id
    ) internal nonReentrant {
        require(_id < curId[_token], "!weaved");
        require(!claimed[_token][msg.sender][_id], "already-claimed");
        uint256 userDeposited = deposits[_token][msg.sender][_id];
        require(userDeposited > 0, "!deposit");

        uint256 ratio = userDeposited.mul(1e18).div(totalDeposited[_token][_id]);
        uint256 userZappedAmount = zapped[_token][_id].mul(ratio).div(1e18);
        claimed[_token][msg.sender][_id] = true;

        if (_target == WETH) {
            IWETH(_target).withdraw(userZappedAmount);
            (bool s, ) = msg.sender.call{ value: userZappedAmount }("0x");
            require(s, "!withdraw");
        } else {
            IERC20(address(_target)).safeTransfer(msg.sender, userZappedAmount);
        }
    }

    /// @notice User withdraws converted Basket token
    function _withdrawZappedMany(
        address _target,
        address[] memory _tokens,
        uint256[] memory _ids
    ) internal {
        assert(_tokens.length == _ids.length);

        for (uint256 i = 0; i < _tokens.length; i++) {
            _withdrawZapped(_target, _tokens[i], _ids[i]);
        }
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

import "./IUniswapV3.sol";

/// @title Provides functions for deriving a pool address from the factory, tokens, and the fee
library PoolAddress {
    bytes32 internal constant POOL_INIT_CODE_HASH = 0xe34f199b19b2b4f47f68442619d555527d244f78a3297ea89325f843f87b8b54;

    /// @notice The identifying key of the pool
    struct PoolKey {
        address token0;
        address token1;
        uint24 fee;
    }

    /// @notice Returns PoolKey: the ordered tokens with the matched fee levels
    /// @param tokenA The first token of a pool, unsorted
    /// @param tokenB The second token of a pool, unsorted
    /// @param fee The fee level of the pool
    /// @return Poolkey The pool details with ordered token0 and token1 assignments
    function getPoolKey(
        address tokenA,
        address tokenB,
        uint24 fee
    ) internal pure returns (PoolKey memory) {
        if (tokenA > tokenB) (tokenA, tokenB) = (tokenB, tokenA);
        return PoolKey({token0: tokenA, token1: tokenB, fee: fee});
    }

    /// @notice Deterministically computes the pool address given the factory and PoolKey
    /// @param factory The Uniswap V3 factory contract address
    /// @param key The PoolKey
    /// @return pool The contract address of the V3 pool
    function computeAddress(address factory, PoolKey memory key) internal pure returns (address pool) {
        require(key.token0 < key.token1);
        pool = address(
            uint256(
                keccak256(
                    abi.encodePacked(
                        hex'ff',
                        factory,
                        keccak256(abi.encode(key.token0, key.token1, key.fee)),
                        POOL_INIT_CODE_HASH
                    )
                )
            )
        );
    }
}

/// @notice Provides validation for callbacks from Uniswap V3 Pools
library CallbackValidation {
    /// @notice Returns the address of a valid Uniswap V3 Pool
    /// @param factory The contract address of the Uniswap V3 factory
    /// @param tokenA The contract address of either token0 or token1
    /// @param tokenB The contract address of the other token
    /// @param fee The fee collected upon every swap in the pool, denominated in hundredths of a bip
    /// @return pool The V3 pool contract address
    function verifyCallback(
        address factory,
        address tokenA,
        address tokenB,
        uint24 fee
    ) internal view returns (IUniswapV3Pool pool) {
        return verifyCallback(factory, PoolAddress.getPoolKey(tokenA, tokenB, fee));
    }

    /// @notice Returns the address of a valid Uniswap V3 Pool
    /// @param factory The contract address of the Uniswap V3 factory
    /// @param poolKey The identifying key of the V3 pool
    /// @return pool The V3 pool contract address
    function verifyCallback(address factory, PoolAddress.PoolKey memory poolKey)
        internal
        view
        returns (IUniswapV3Pool pool)
    {
        pool = IUniswapV3Pool(PoolAddress.computeAddress(factory, poolKey));
        require(msg.sender == address(pool));
    }
}

{
  "compilationTarget": {
    "SocialBDIBurner.sol": "SocialBDIBurner"
  },
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}