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// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

import "@openzeppelin/contracts/proxy/Proxy.sol";
import "../interfaces/IPAllActionV3.sol";
import "../interfaces/IDiamondLoupe.sol";
import "../interfaces/IDiamondCut.sol";

// solhint-disable no-empty-blocks
contract PendleRouterV3 is Proxy, IDiamondLoupe {
    address internal immutable ACTION_ADD_REMOVE_LIQ;
    address internal immutable ACTION_SWAP_PT;
    address internal immutable ACTION_SWAP_YT;
    address internal immutable ACTION_MISC;
    address internal immutable ACTION_CALLBACK;

    event DiamondCut(IDiamondCut.FacetCut[] _diamondCut, address _init, bytes _calldata);

    constructor(
        address _ACTION_ADD_REMOVE_LIQ,
        address _ACTION_SWAP_PT,
        address _ACTION_SWAP_YT,
        address _ACTION_MISC,
        address _ACTION_CALLBACK
    ) {
        ACTION_ADD_REMOVE_LIQ = _ACTION_ADD_REMOVE_LIQ;
        ACTION_SWAP_PT = _ACTION_SWAP_PT;
        ACTION_SWAP_YT = _ACTION_SWAP_YT;
        ACTION_MISC = _ACTION_MISC;
        ACTION_CALLBACK = _ACTION_CALLBACK;
        _emitEvents();
    }

    function _emitEvents() internal {
        Facet[] memory facets_ = facets();

        uint256 nFacets = facets_.length;

        IDiamondCut.FacetCut[] memory cuts = new IDiamondCut.FacetCut[](nFacets);
        for (uint256 i; i < nFacets; ) {
            cuts[i].facetAddress = facets_[i].facetAddress;
            cuts[i].action = IDiamondCut.FacetCutAction.Add;
            cuts[i].functionSelectors = facets_[i].functionSelectors;
            unchecked {
                ++i;
            }
        }

        emit DiamondCut(cuts, address(0), "");
    }

    receive() external payable virtual override {}

    /// @notice Gets all facet addresses and their four byte function selectors.
    /// @return facets_ Facet
    function facets() public view returns (Facet[] memory facets_) {
        address[] memory facetAddresses_ = facetAddresses();
        uint256 numFacets = facetAddresses_.length;

        facets_ = new Facet[](numFacets);
        for (uint256 i; i < numFacets; ) {
            facets_[i].facetAddress = facetAddresses_[i];
            facets_[i].functionSelectors = facetFunctionSelectors(facetAddresses_[i]);
            unchecked {
                i++;
            }
        }
    }

    function facetFunctionSelectors(address facet) public view returns (bytes4[] memory res) {
        if (facet == address(this)) {
            res = new bytes4[](4);
            res[0] = 0x52ef6b2c; // facetAddresses
            res[1] = 0x7a0ed627; // facets
            res[2] = 0xadfca15e; // facetFunctionSelectors
            res[3] = 0xcdffacc6; // facetAddress
        }
        if (facet == ACTION_ADD_REMOVE_LIQ) {
            res = new bytes4[](12);
            res[0] = 0x12599ac6; // addLiquiditySingleToken
            res[1] = 0x2756ce06; // addLiquidityDualTokenAndPt
            res[2] = 0x3dbe1c55; // addLiquiditySingleTokenKeepYt
            res[3] = 0x4e390267; // addLiquiditySinglePt
            res[4] = 0x58bda475; // addLiquiditySingleSy
            res[5] = 0x60da0860; // removeLiquiditySingleToken
            res[6] = 0x6b77ac9e; // removeLiquiditySinglePt
            res[7] = 0x844384aa; // addLiquiditySingleSyKeepYt
            res[8] = 0x97ee279e; // addLiquidityDualSyAndPt
            res[9] = 0xb00f09d7; // removeLiquidityDualTokenAndPt
            res[10] = 0xb7d75b8b; // removeLiquidityDualSyAndPt
            res[11] = 0xd13b4fdc; // removeLiquiditySingleSy
        }
        if (facet == ACTION_SWAP_YT) {
            res = new bytes4[](6);
            res[0] = 0x05eb5327; // swapExactYtForToken
            res[1] = 0x448b9b95; // swapExactYtForPt
            res[2] = 0x7b8b4b95; // swapExactSyForYt
            res[3] = 0x80c4d566; // swapExactYtForSy
            res[4] = 0xc861a898; // swapExactPtForYt
            res[5] = 0xed48907e; // swapExactTokenForYt
        }
        if (facet == ACTION_SWAP_PT) {
            res = new bytes4[](4);
            res[0] = 0x2a50917c; // swapExactSyForPt
            res[1] = 0x3346d3a3; // swapExactPtForSy
            res[2] = 0x594a88cc; // swapExactPtForToken
            res[3] = 0xc81f847a; // swapExactTokenForPt
        }
        if (facet == ACTION_CALLBACK) {
            res = new bytes4[](2);
            res[0] = 0xeb3a7d47; // limitRouterCallback
            res[1] = 0xfa483e72; // swapCallback
        }
        if (facet == ACTION_MISC) {
            res = new bytes4[](12);
            res[0] = 0x1a8631b2; // mintPyFromSy
            res[1] = 0x2d8f9d8d; // boostMarkets
            res[2] = 0x2e071dc6; // mintSyFromToken
            res[3] = 0x339748cb; // redeemPyToSy
            res[4] = 0x339a5572; // redeemSyToToken
            res[5] = 0x47f1de22; // redeemPyToToken
            res[6] = 0x5d3e105c; // swapTokenToToken
            res[7] = 0x60fc8466; // multicall
            res[8] = 0xa89eba4a; // swapTokenToTokenViaSy
            res[9] = 0xbd61951d; // simulate
            res[10] = 0xd0f42385; // mintPyFromToken
            res[11] = 0xf7e375e8; // redeemDueInterestAndRewards
        }
    }

    function facetAddress(bytes4 sig) public view returns (address) {
        if (sig < 0x6b77ac9e) {
            if (sig < 0x3dbe1c55) {
                if (sig < 0x2d8f9d8d) {
                    if (sig < 0x1a8631b2) {
                        if (sig == 0x05eb5327) return ACTION_SWAP_YT; //swapExactYtForToken
                        if (sig == 0x12599ac6) return ACTION_ADD_REMOVE_LIQ; //addLiquiditySingleToken
                    } else {
                        if (sig == 0x1a8631b2) return ACTION_MISC; //mintPyFromSy
                        if (sig == 0x2756ce06) return ACTION_ADD_REMOVE_LIQ; //addLiquidityDualTokenAndPt
                        if (sig == 0x2a50917c) return ACTION_SWAP_PT; //swapExactSyForPt
                    }
                } else {
                    if (sig < 0x3346d3a3) {
                        if (sig == 0x2d8f9d8d) return ACTION_MISC; //boostMarkets
                        if (sig == 0x2e071dc6) return ACTION_MISC; //mintSyFromToken
                    } else {
                        if (sig == 0x3346d3a3) return ACTION_SWAP_PT; //swapExactPtForSy
                        if (sig == 0x339748cb) return ACTION_MISC; //redeemPyToSy
                        if (sig == 0x339a5572) return ACTION_MISC; //redeemSyToToken
                    }
                }
            } else {
                if (sig < 0x58bda475) {
                    if (sig < 0x47f1de22) {
                        if (sig == 0x3dbe1c55) return ACTION_ADD_REMOVE_LIQ; //addLiquiditySingleTokenKeepYt
                        if (sig == 0x448b9b95) return ACTION_SWAP_YT; //swapExactYtForPt
                    } else {
                        if (sig == 0x47f1de22) return ACTION_MISC; //redeemPyToToken
                        if (sig == 0x4e390267) return ACTION_ADD_REMOVE_LIQ; //addLiquiditySinglePt
                        if (sig == 0x52ef6b2c) return address(this); //facetAddresses
                    }
                } else {
                    if (sig < 0x5d3e105c) {
                        if (sig == 0x58bda475) return ACTION_ADD_REMOVE_LIQ; //addLiquiditySingleSy
                        if (sig == 0x594a88cc) return ACTION_SWAP_PT; //swapExactPtForToken
                    } else {
                        if (sig == 0x5d3e105c) return ACTION_MISC; //swapTokenToToken
                        if (sig == 0x60da0860) return ACTION_ADD_REMOVE_LIQ; //removeLiquiditySingleToken
                        if (sig == 0x60fc8466) return ACTION_MISC; //multicall
                    }
                }
            }
        } else {
            if (sig < 0xbd61951d) {
                if (sig < 0x97ee279e) {
                    if (sig < 0x7b8b4b95) {
                        if (sig == 0x6b77ac9e) return ACTION_ADD_REMOVE_LIQ; //removeLiquiditySinglePt
                        if (sig == 0x7a0ed627) return address(this); //facets
                    } else {
                        if (sig == 0x7b8b4b95) return ACTION_SWAP_YT; //swapExactSyForYt
                        if (sig == 0x80c4d566) return ACTION_SWAP_YT; //swapExactYtForSy
                        if (sig == 0x844384aa) return ACTION_ADD_REMOVE_LIQ; //addLiquiditySingleSyKeepYt
                    }
                } else {
                    if (sig < 0xadfca15e) {
                        if (sig == 0x97ee279e) return ACTION_ADD_REMOVE_LIQ; //addLiquidityDualSyAndPt
                        if (sig == 0xa89eba4a) return ACTION_MISC; //swapTokenToTokenViaSy
                    } else {
                        if (sig == 0xadfca15e) return address(this); //facetFunctionSelectors
                        if (sig == 0xb00f09d7) return ACTION_ADD_REMOVE_LIQ; //removeLiquidityDualTokenAndPt
                        if (sig == 0xb7d75b8b) return ACTION_ADD_REMOVE_LIQ; //removeLiquidityDualSyAndPt
                    }
                }
            } else {
                if (sig < 0xd13b4fdc) {
                    if (sig < 0xc861a898) {
                        if (sig == 0xbd61951d) return ACTION_MISC; //simulate
                        if (sig == 0xc81f847a) return ACTION_SWAP_PT; //swapExactTokenForPt
                    } else {
                        if (sig == 0xc861a898) return ACTION_SWAP_YT; //swapExactPtForYt
                        if (sig == 0xcdffacc6) return address(this); //facetAddress
                        if (sig == 0xd0f42385) return ACTION_MISC; //mintPyFromToken
                    }
                } else {
                    if (sig < 0xed48907e) {
                        if (sig == 0xd13b4fdc) return ACTION_ADD_REMOVE_LIQ; //removeLiquiditySingleSy
                        if (sig == 0xeb3a7d47) return ACTION_CALLBACK; //limitRouterCallback
                    } else {
                        if (sig == 0xed48907e) return ACTION_SWAP_YT; //swapExactTokenForYt
                        if (sig == 0xf7e375e8) return ACTION_MISC; //redeemDueInterestAndRewards
                        if (sig == 0xfa483e72) return ACTION_CALLBACK; //swapCallback
                    }
                }
            }
        }
        revert Errors.RouterInvalidAction(sig);
        // NUM_FUNC: 40 AVG:4.80 WORST_CASE:6 STOP_BRANCH:3
    }

    function facetAddresses() public view returns (address[] memory) {
        address[] memory res = new address[](6);
        res[0] = address(this);
        res[1] = ACTION_ADD_REMOVE_LIQ;
        res[2] = ACTION_SWAP_YT;
        res[3] = ACTION_SWAP_PT;
        res[4] = ACTION_CALLBACK;
        res[5] = ACTION_MISC;
        return res;
    }

    function _implementation() internal view override returns (address) {
        return facetAddress(msg.sig);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (proxy/Proxy.sol)

pragma solidity ^0.8.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }

    /**
     * @dev This is a virtual function that should be overridden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback() external payable virtual {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive() external payable virtual {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overridden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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: GPL-3.0-or-later
pragma solidity ^0.8.0;

library Errors {
    // BulkSeller
    error BulkInsufficientSyForTrade(uint256 currentAmount, uint256 requiredAmount);
    error BulkInsufficientTokenForTrade(uint256 currentAmount, uint256 requiredAmount);
    error BulkInSufficientSyOut(uint256 actualSyOut, uint256 requiredSyOut);
    error BulkInSufficientTokenOut(uint256 actualTokenOut, uint256 requiredTokenOut);
    error BulkInsufficientSyReceived(uint256 actualBalance, uint256 requiredBalance);
    error BulkNotMaintainer();
    error BulkNotAdmin();
    error BulkSellerAlreadyExisted(address token, address SY, address bulk);
    error BulkSellerInvalidToken(address token, address SY);
    error BulkBadRateTokenToSy(uint256 actualRate, uint256 currentRate, uint256 eps);
    error BulkBadRateSyToToken(uint256 actualRate, uint256 currentRate, uint256 eps);

    // APPROX
    error ApproxFail();
    error ApproxParamsInvalid(uint256 guessMin, uint256 guessMax, uint256 eps);
    error ApproxBinarySearchInputInvalid(
        uint256 approxGuessMin,
        uint256 approxGuessMax,
        uint256 minGuessMin,
        uint256 maxGuessMax
    );

    // MARKET + MARKET MATH CORE
    error MarketExpired();
    error MarketZeroAmountsInput();
    error MarketZeroAmountsOutput();
    error MarketZeroLnImpliedRate();
    error MarketInsufficientPtForTrade(int256 currentAmount, int256 requiredAmount);
    error MarketInsufficientPtReceived(uint256 actualBalance, uint256 requiredBalance);
    error MarketInsufficientSyReceived(uint256 actualBalance, uint256 requiredBalance);
    error MarketZeroTotalPtOrTotalAsset(int256 totalPt, int256 totalAsset);
    error MarketExchangeRateBelowOne(int256 exchangeRate);
    error MarketProportionMustNotEqualOne();
    error MarketRateScalarBelowZero(int256 rateScalar);
    error MarketScalarRootBelowZero(int256 scalarRoot);
    error MarketProportionTooHigh(int256 proportion, int256 maxProportion);

    error OracleUninitialized();
    error OracleTargetTooOld(uint32 target, uint32 oldest);
    error OracleZeroCardinality();

    error MarketFactoryExpiredPt();
    error MarketFactoryInvalidPt();
    error MarketFactoryMarketExists();

    error MarketFactoryLnFeeRateRootTooHigh(uint80 lnFeeRateRoot, uint256 maxLnFeeRateRoot);
    error MarketFactoryOverriddenFeeTooHigh(uint80 overriddenFee, uint256 marketLnFeeRateRoot);
    error MarketFactoryReserveFeePercentTooHigh(uint8 reserveFeePercent, uint8 maxReserveFeePercent);
    error MarketFactoryZeroTreasury();
    error MarketFactoryInitialAnchorTooLow(int256 initialAnchor, int256 minInitialAnchor);
    error MFNotPendleMarket(address addr);

    // ROUTER
    error RouterInsufficientLpOut(uint256 actualLpOut, uint256 requiredLpOut);
    error RouterInsufficientSyOut(uint256 actualSyOut, uint256 requiredSyOut);
    error RouterInsufficientPtOut(uint256 actualPtOut, uint256 requiredPtOut);
    error RouterInsufficientYtOut(uint256 actualYtOut, uint256 requiredYtOut);
    error RouterInsufficientPYOut(uint256 actualPYOut, uint256 requiredPYOut);
    error RouterInsufficientTokenOut(uint256 actualTokenOut, uint256 requiredTokenOut);
    error RouterInsufficientSyRepay(uint256 actualSyRepay, uint256 requiredSyRepay);
    error RouterInsufficientPtRepay(uint256 actualPtRepay, uint256 requiredPtRepay);
    error RouterNotAllSyUsed(uint256 netSyDesired, uint256 netSyUsed);

    error RouterTimeRangeZero();
    error RouterCallbackNotPendleMarket(address caller);
    error RouterInvalidAction(bytes4 selector);
    error RouterInvalidFacet(address facet);

    error RouterKyberSwapDataZero();

    error SimulationResults(bool success, bytes res);

    // YIELD CONTRACT
    error YCExpired();
    error YCNotExpired();
    error YieldContractInsufficientSy(uint256 actualSy, uint256 requiredSy);
    error YCNothingToRedeem();
    error YCPostExpiryDataNotSet();
    error YCNoFloatingSy();

    // YieldFactory
    error YCFactoryInvalidExpiry();
    error YCFactoryYieldContractExisted();
    error YCFactoryZeroExpiryDivisor();
    error YCFactoryZeroTreasury();
    error YCFactoryInterestFeeRateTooHigh(uint256 interestFeeRate, uint256 maxInterestFeeRate);
    error YCFactoryRewardFeeRateTooHigh(uint256 newRewardFeeRate, uint256 maxRewardFeeRate);

    // SY
    error SYInvalidTokenIn(address token);
    error SYInvalidTokenOut(address token);
    error SYZeroDeposit();
    error SYZeroRedeem();
    error SYInsufficientSharesOut(uint256 actualSharesOut, uint256 requiredSharesOut);
    error SYInsufficientTokenOut(uint256 actualTokenOut, uint256 requiredTokenOut);

    // SY-specific
    error SYQiTokenMintFailed(uint256 errCode);
    error SYQiTokenRedeemFailed(uint256 errCode);
    error SYQiTokenRedeemRewardsFailed(uint256 rewardAccruedType0, uint256 rewardAccruedType1);
    error SYQiTokenBorrowRateTooHigh(uint256 borrowRate, uint256 borrowRateMax);

    error SYCurveInvalidPid();
    error SYCurve3crvPoolNotFound();

    error SYApeDepositAmountTooSmall(uint256 amountDeposited);
    error SYBalancerInvalidPid();
    error SYInvalidRewardToken(address token);

    error SYStargateRedeemCapExceeded(uint256 amountLpDesired, uint256 amountLpRedeemable);

    error SYBalancerReentrancy();

    error NotFromTrustedRemote(uint16 srcChainId, bytes path);

    // Liquidity Mining
    error VCInactivePool(address pool);
    error VCPoolAlreadyActive(address pool);
    error VCZeroVePendle(address user);
    error VCExceededMaxWeight(uint256 totalWeight, uint256 maxWeight);
    error VCEpochNotFinalized(uint256 wTime);
    error VCPoolAlreadyAddAndRemoved(address pool);

    error VEInvalidNewExpiry(uint256 newExpiry);
    error VEExceededMaxLockTime();
    error VEInsufficientLockTime();
    error VENotAllowedReduceExpiry();
    error VEZeroAmountLocked();
    error VEPositionNotExpired();
    error VEZeroPosition();
    error VEZeroSlope(uint128 bias, uint128 slope);
    error VEReceiveOldSupply(uint256 msgTime);

    error GCNotPendleMarket(address caller);
    error GCNotVotingController(address caller);

    error InvalidWTime(uint256 wTime);
    error ExpiryInThePast(uint256 expiry);
    error ChainNotSupported(uint256 chainId);

    error FDTotalAmountFundedNotMatch(uint256 actualTotalAmount, uint256 expectedTotalAmount);
    error FDEpochLengthMismatch();
    error FDInvalidPool(address pool);
    error FDPoolAlreadyExists(address pool);
    error FDInvalidNewFinishedEpoch(uint256 oldFinishedEpoch, uint256 newFinishedEpoch);
    error FDInvalidStartEpoch(uint256 startEpoch);
    error FDInvalidWTimeFund(uint256 lastFunded, uint256 wTime);
    error FDFutureFunding(uint256 lastFunded, uint256 currentWTime);

    error BDInvalidEpoch(uint256 epoch, uint256 startTime);

    // Cross-Chain
    error MsgNotFromSendEndpoint(uint16 srcChainId, bytes path);
    error MsgNotFromReceiveEndpoint(address sender);
    error InsufficientFeeToSendMsg(uint256 currentFee, uint256 requiredFee);
    error ApproxDstExecutionGasNotSet();
    error InvalidRetryData();

    // GENERIC MSG
    error ArrayLengthMismatch();
    error ArrayEmpty();
    error ArrayOutOfBounds();
    error ZeroAddress();
    error FailedToSendEther();
    error InvalidMerkleProof();

    error OnlyLayerZeroEndpoint();
    error OnlyYT();
    error OnlyYCFactory();
    error OnlyWhitelisted();

    // Swap Aggregator
    error SAInsufficientTokenIn(address tokenIn, uint256 amountExpected, uint256 amountActual);
    error UnsupportedSelector(uint256 aggregatorType, bytes4 selector);
}

// SPDX-License-Identifier: GPL-3.0-or-later
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
// documentation files (the “Software”), to deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
// Software.

// THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

pragma solidity ^0.8.0;

/* solhint-disable */

/**
 * @dev Exponentiation and logarithm functions for 18 decimal fixed point numbers (both base and exponent/argument).
 *
 * Exponentiation and logarithm with arbitrary bases (x^y and log_x(y)) are implemented by conversion to natural
 * exponentiation and logarithm (where the base is Euler's number).
 *
 * @author Fernando Martinelli - @fernandomartinelli
 * @author Sergio Yuhjtman - @sergioyuhjtman
 * @author Daniel Fernandez - @dmf7z
 */
library LogExpMath {
    // All fixed point multiplications and divisions are inlined. This means we need to divide by ONE when multiplying
    // two numbers, and multiply by ONE when dividing them.

    // All arguments and return values are 18 decimal fixed point numbers.
    int256 constant ONE_18 = 1e18;

    // Internally, intermediate values are computed with higher precision as 20 decimal fixed point numbers, and in the
    // case of ln36, 36 decimals.
    int256 constant ONE_20 = 1e20;
    int256 constant ONE_36 = 1e36;

    // The domain of natural exponentiation is bound by the word size and number of decimals used.
    //
    // Because internally the result will be stored using 20 decimals, the largest possible result is
    // (2^255 - 1) / 10^20, which makes the largest exponent ln((2^255 - 1) / 10^20) = 130.700829182905140221.
    // The smallest possible result is 10^(-18), which makes largest negative argument
    // ln(10^(-18)) = -41.446531673892822312.
    // We use 130.0 and -41.0 to have some safety margin.
    int256 constant MAX_NATURAL_EXPONENT = 130e18;
    int256 constant MIN_NATURAL_EXPONENT = -41e18;

    // Bounds for ln_36's argument. Both ln(0.9) and ln(1.1) can be represented with 36 decimal places in a fixed point
    // 256 bit integer.
    int256 constant LN_36_LOWER_BOUND = ONE_18 - 1e17;
    int256 constant LN_36_UPPER_BOUND = ONE_18 + 1e17;

    uint256 constant MILD_EXPONENT_BOUND = 2 ** 254 / uint256(ONE_20);

    // 18 decimal constants
    int256 constant x0 = 128000000000000000000; // 2ˆ7
    int256 constant a0 = 38877084059945950922200000000000000000000000000000000000; // eˆ(x0) (no decimals)
    int256 constant x1 = 64000000000000000000; // 2ˆ6
    int256 constant a1 = 6235149080811616882910000000; // eˆ(x1) (no decimals)

    // 20 decimal constants
    int256 constant x2 = 3200000000000000000000; // 2ˆ5
    int256 constant a2 = 7896296018268069516100000000000000; // eˆ(x2)
    int256 constant x3 = 1600000000000000000000; // 2ˆ4
    int256 constant a3 = 888611052050787263676000000; // eˆ(x3)
    int256 constant x4 = 800000000000000000000; // 2ˆ3
    int256 constant a4 = 298095798704172827474000; // eˆ(x4)
    int256 constant x5 = 400000000000000000000; // 2ˆ2
    int256 constant a5 = 5459815003314423907810; // eˆ(x5)
    int256 constant x6 = 200000000000000000000; // 2ˆ1
    int256 constant a6 = 738905609893065022723; // eˆ(x6)
    int256 constant x7 = 100000000000000000000; // 2ˆ0
    int256 constant a7 = 271828182845904523536; // eˆ(x7)
    int256 constant x8 = 50000000000000000000; // 2ˆ-1
    int256 constant a8 = 164872127070012814685; // eˆ(x8)
    int256 constant x9 = 25000000000000000000; // 2ˆ-2
    int256 constant a9 = 128402541668774148407; // eˆ(x9)
    int256 constant x10 = 12500000000000000000; // 2ˆ-3
    int256 constant a10 = 113314845306682631683; // eˆ(x10)
    int256 constant x11 = 6250000000000000000; // 2ˆ-4
    int256 constant a11 = 106449445891785942956; // eˆ(x11)

    /**
     * @dev Natural exponentiation (e^x) with signed 18 decimal fixed point exponent.
     *
     * Reverts if `x` is smaller than MIN_NATURAL_EXPONENT, or larger than `MAX_NATURAL_EXPONENT`.
     */
    function exp(int256 x) internal pure returns (int256) {
        unchecked {
            require(x >= MIN_NATURAL_EXPONENT && x <= MAX_NATURAL_EXPONENT, "Invalid exponent");

            if (x < 0) {
                // We only handle positive exponents: e^(-x) is computed as 1 / e^x. We can safely make x positive since it
                // fits in the signed 256 bit range (as it is larger than MIN_NATURAL_EXPONENT).
                // Fixed point division requires multiplying by ONE_18.
                return ((ONE_18 * ONE_18) / exp(-x));
            }

            // First, we use the fact that e^(x+y) = e^x * e^y to decompose x into a sum of powers of two, which we call x_n,
            // where x_n == 2^(7 - n), and e^x_n = a_n has been precomputed. We choose the first x_n, x0, to equal 2^7
            // because all larger powers are larger than MAX_NATURAL_EXPONENT, and therefore not present in the
            // decomposition.
            // At the end of this process we will have the product of all e^x_n = a_n that apply, and the remainder of this
            // decomposition, which will be lower than the smallest x_n.
            // exp(x) = k_0 * a_0 * k_1 * a_1 * ... + k_n * a_n * exp(remainder), where each k_n equals either 0 or 1.
            // We mutate x by subtracting x_n, making it the remainder of the decomposition.

            // The first two a_n (e^(2^7) and e^(2^6)) are too large if stored as 18 decimal numbers, and could cause
            // intermediate overflows. Instead we store them as plain integers, with 0 decimals.
            // Additionally, x0 + x1 is larger than MAX_NATURAL_EXPONENT, which means they will not both be present in the
            // decomposition.

            // For each x_n, we test if that term is present in the decomposition (if x is larger than it), and if so deduct
            // it and compute the accumulated product.

            int256 firstAN;
            if (x >= x0) {
                x -= x0;
                firstAN = a0;
            } else if (x >= x1) {
                x -= x1;
                firstAN = a1;
            } else {
                firstAN = 1; // One with no decimal places
            }

            // We now transform x into a 20 decimal fixed point number, to have enhanced precision when computing the
            // smaller terms.
            x *= 100;

            // `product` is the accumulated product of all a_n (except a0 and a1), which starts at 20 decimal fixed point
            // one. Recall that fixed point multiplication requires dividing by ONE_20.
            int256 product = ONE_20;

            if (x >= x2) {
                x -= x2;
                product = (product * a2) / ONE_20;
            }
            if (x >= x3) {
                x -= x3;
                product = (product * a3) / ONE_20;
            }
            if (x >= x4) {
                x -= x4;
                product = (product * a4) / ONE_20;
            }
            if (x >= x5) {
                x -= x5;
                product = (product * a5) / ONE_20;
            }
            if (x >= x6) {
                x -= x6;
                product = (product * a6) / ONE_20;
            }
            if (x >= x7) {
                x -= x7;
                product = (product * a7) / ONE_20;
            }
            if (x >= x8) {
                x -= x8;
                product = (product * a8) / ONE_20;
            }
            if (x >= x9) {
                x -= x9;
                product = (product * a9) / ONE_20;
            }

            // x10 and x11 are unnecessary here since we have high enough precision already.

            // Now we need to compute e^x, where x is small (in particular, it is smaller than x9). We use the Taylor series
            // expansion for e^x: 1 + x + (x^2 / 2!) + (x^3 / 3!) + ... + (x^n / n!).

            int256 seriesSum = ONE_20; // The initial one in the sum, with 20 decimal places.
            int256 term; // Each term in the sum, where the nth term is (x^n / n!).

            // The first term is simply x.
            term = x;
            seriesSum += term;

            // Each term (x^n / n!) equals the previous one times x, divided by n. Since x is a fixed point number,
            // multiplying by it requires dividing by ONE_20, but dividing by the non-fixed point n values does not.

            term = ((term * x) / ONE_20) / 2;
            seriesSum += term;

            term = ((term * x) / ONE_20) / 3;
            seriesSum += term;

            term = ((term * x) / ONE_20) / 4;
            seriesSum += term;

            term = ((term * x) / ONE_20) / 5;
            seriesSum += term;

            term = ((term * x) / ONE_20) / 6;
            seriesSum += term;

            term = ((term * x) / ONE_20) / 7;
            seriesSum += term;

            term = ((term * x) / ONE_20) / 8;
            seriesSum += term;

            term = ((term * x) / ONE_20) / 9;
            seriesSum += term;

            term = ((term * x) / ONE_20) / 10;
            seriesSum += term;

            term = ((term * x) / ONE_20) / 11;
            seriesSum += term;

            term = ((term * x) / ONE_20) / 12;
            seriesSum += term;

            // 12 Taylor terms are sufficient for 18 decimal precision.

            // We now have the first a_n (with no decimals), and the product of all other a_n present, and the Taylor
            // approximation of the exponentiation of the remainder (both with 20 decimals). All that remains is to multiply
            // all three (one 20 decimal fixed point multiplication, dividing by ONE_20, and one integer multiplication),
            // and then drop two digits to return an 18 decimal value.

            return (((product * seriesSum) / ONE_20) * firstAN) / 100;
        }
    }

    /**
     * @dev Natural logarithm (ln(a)) with signed 18 decimal fixed point argument.
     */
    function ln(int256 a) internal pure returns (int256) {
        unchecked {
            // The real natural logarithm is not defined for negative numbers or zero.
            require(a > 0, "out of bounds");
            if (LN_36_LOWER_BOUND < a && a < LN_36_UPPER_BOUND) {
                return _ln_36(a) / ONE_18;
            } else {
                return _ln(a);
            }
        }
    }

    /**
     * @dev Exponentiation (x^y) with unsigned 18 decimal fixed point base and exponent.
     *
     * Reverts if ln(x) * y is smaller than `MIN_NATURAL_EXPONENT`, or larger than `MAX_NATURAL_EXPONENT`.
     */
    function pow(uint256 x, uint256 y) internal pure returns (uint256) {
        unchecked {
            if (y == 0) {
                // We solve the 0^0 indetermination by making it equal one.
                return uint256(ONE_18);
            }

            if (x == 0) {
                return 0;
            }

            // Instead of computing x^y directly, we instead rely on the properties of logarithms and exponentiation to
            // arrive at that r`esult. In particular, exp(ln(x)) = x, and ln(x^y) = y * ln(x). This means
            // x^y = exp(y * ln(x)).

            // The ln function takes a signed value, so we need to make sure x fits in the signed 256 bit range.
            require(x < 2 ** 255, "x out of bounds");
            int256 x_int256 = int256(x);

            // We will compute y * ln(x) in a single step. Depending on the value of x, we can either use ln or ln_36. In
            // both cases, we leave the division by ONE_18 (due to fixed point multiplication) to the end.

            // This prevents y * ln(x) from overflowing, and at the same time guarantees y fits in the signed 256 bit range.
            require(y < MILD_EXPONENT_BOUND, "y out of bounds");
            int256 y_int256 = int256(y);

            int256 logx_times_y;
            if (LN_36_LOWER_BOUND < x_int256 && x_int256 < LN_36_UPPER_BOUND) {
                int256 ln_36_x = _ln_36(x_int256);

                // ln_36_x has 36 decimal places, so multiplying by y_int256 isn't as straightforward, since we can't just
                // bring y_int256 to 36 decimal places, as it might overflow. Instead, we perform two 18 decimal
                // multiplications and add the results: one with the first 18 decimals of ln_36_x, and one with the
                // (downscaled) last 18 decimals.
                logx_times_y = ((ln_36_x / ONE_18) * y_int256 + ((ln_36_x % ONE_18) * y_int256) / ONE_18);
            } else {
                logx_times_y = _ln(x_int256) * y_int256;
            }
            logx_times_y /= ONE_18;

            // Finally, we compute exp(y * ln(x)) to arrive at x^y
            require(
                MIN_NATURAL_EXPONENT <= logx_times_y && logx_times_y <= MAX_NATURAL_EXPONENT,
                "product out of bounds"
            );

            return uint256(exp(logx_times_y));
        }
    }

    /**
     * @dev Internal natural logarithm (ln(a)) with signed 18 decimal fixed point argument.
     */
    function _ln(int256 a) private pure returns (int256) {
        unchecked {
            if (a < ONE_18) {
                // Since ln(a^k) = k * ln(a), we can compute ln(a) as ln(a) = ln((1/a)^(-1)) = - ln((1/a)). If a is less
                // than one, 1/a will be greater than one, and this if statement will not be entered in the recursive call.
                // Fixed point division requires multiplying by ONE_18.
                return (-_ln((ONE_18 * ONE_18) / a));
            }

            // First, we use the fact that ln^(a * b) = ln(a) + ln(b) to decompose ln(a) into a sum of powers of two, which
            // we call x_n, where x_n == 2^(7 - n), which are the natural logarithm of precomputed quantities a_n (that is,
            // ln(a_n) = x_n). We choose the first x_n, x0, to equal 2^7 because the exponential of all larger powers cannot
            // be represented as 18 fixed point decimal numbers in 256 bits, and are therefore larger than a.
            // At the end of this process we will have the sum of all x_n = ln(a_n) that apply, and the remainder of this
            // decomposition, which will be lower than the smallest a_n.
            // ln(a) = k_0 * x_0 + k_1 * x_1 + ... + k_n * x_n + ln(remainder), where each k_n equals either 0 or 1.
            // We mutate a by subtracting a_n, making it the remainder of the decomposition.

            // For reasons related to how `exp` works, the first two a_n (e^(2^7) and e^(2^6)) are not stored as fixed point
            // numbers with 18 decimals, but instead as plain integers with 0 decimals, so we need to multiply them by
            // ONE_18 to convert them to fixed point.
            // For each a_n, we test if that term is present in the decomposition (if a is larger than it), and if so divide
            // by it and compute the accumulated sum.

            int256 sum = 0;
            if (a >= a0 * ONE_18) {
                a /= a0; // Integer, not fixed point division
                sum += x0;
            }

            if (a >= a1 * ONE_18) {
                a /= a1; // Integer, not fixed point division
                sum += x1;
            }

            // All other a_n and x_n are stored as 20 digit fixed point numbers, so we convert the sum and a to this format.
            sum *= 100;
            a *= 100;

            // Because further a_n are  20 digit fixed point numbers, we multiply by ONE_20 when dividing by them.

            if (a >= a2) {
                a = (a * ONE_20) / a2;
                sum += x2;
            }

            if (a >= a3) {
                a = (a * ONE_20) / a3;
                sum += x3;
            }

            if (a >= a4) {
                a = (a * ONE_20) / a4;
                sum += x4;
            }

            if (a >= a5) {
                a = (a * ONE_20) / a5;
                sum += x5;
            }

            if (a >= a6) {
                a = (a * ONE_20) / a6;
                sum += x6;
            }

            if (a >= a7) {
                a = (a * ONE_20) / a7;
                sum += x7;
            }

            if (a >= a8) {
                a = (a * ONE_20) / a8;
                sum += x8;
            }

            if (a >= a9) {
                a = (a * ONE_20) / a9;
                sum += x9;
            }

            if (a >= a10) {
                a = (a * ONE_20) / a10;
                sum += x10;
            }

            if (a >= a11) {
                a = (a * ONE_20) / a11;
                sum += x11;
            }

            // a is now a small number (smaller than a_11, which roughly equals 1.06). This means we can use a Taylor series
            // that converges rapidly for values of `a` close to one - the same one used in ln_36.
            // Let z = (a - 1) / (a + 1).
            // ln(a) = 2 * (z + z^3 / 3 + z^5 / 5 + z^7 / 7 + ... + z^(2 * n + 1) / (2 * n + 1))

            // Recall that 20 digit fixed point division requires multiplying by ONE_20, and multiplication requires
            // division by ONE_20.
            int256 z = ((a - ONE_20) * ONE_20) / (a + ONE_20);
            int256 z_squared = (z * z) / ONE_20;

            // num is the numerator of the series: the z^(2 * n + 1) term
            int256 num = z;

            // seriesSum holds the accumulated sum of each term in the series, starting with the initial z
            int256 seriesSum = num;

            // In each step, the numerator is multiplied by z^2
            num = (num * z_squared) / ONE_20;
            seriesSum += num / 3;

            num = (num * z_squared) / ONE_20;
            seriesSum += num / 5;

            num = (num * z_squared) / ONE_20;
            seriesSum += num / 7;

            num = (num * z_squared) / ONE_20;
            seriesSum += num / 9;

            num = (num * z_squared) / ONE_20;
            seriesSum += num / 11;

            // 6 Taylor terms are sufficient for 36 decimal precision.

            // Finally, we multiply by 2 (non fixed point) to compute ln(remainder)
            seriesSum *= 2;

            // We now have the sum of all x_n present, and the Taylor approximation of the logarithm of the remainder (both
            // with 20 decimals). All that remains is to sum these two, and then drop two digits to return a 18 decimal
            // value.

            return (sum + seriesSum) / 100;
        }
    }

    /**
     * @dev Intrnal high precision (36 decimal places) natural logarithm (ln(x)) with signed 18 decimal fixed point argument,
     * for x close to one.
     *
     * Should only be used if x is between LN_36_LOWER_BOUND and LN_36_UPPER_BOUND.
     */
    function _ln_36(int256 x) private pure returns (int256) {
        unchecked {
            // Since ln(1) = 0, a value of x close to one will yield a very small result, which makes using 36 digits
            // worthwhile.

            // First, we transform x to a 36 digit fixed point value.
            x *= ONE_18;

            // We will use the following Taylor expansion, which converges very rapidly. Let z = (x - 1) / (x + 1).
            // ln(x) = 2 * (z + z^3 / 3 + z^5 / 5 + z^7 / 7 + ... + z^(2 * n + 1) / (2 * n + 1))

            // Recall that 36 digit fixed point division requires multiplying by ONE_36, and multiplication requires
            // division by ONE_36.
            int256 z = ((x - ONE_36) * ONE_36) / (x + ONE_36);
            int256 z_squared = (z * z) / ONE_36;

            // num is the numerator of the series: the z^(2 * n + 1) term
            int256 num = z;

            // seriesSum holds the accumulated sum of each term in the series, starting with the initial z
            int256 seriesSum = num;

            // In each step, the numerator is multiplied by z^2
            num = (num * z_squared) / ONE_36;
            seriesSum += num / 3;

            num = (num * z_squared) / ONE_36;
            seriesSum += num / 5;

            num = (num * z_squared) / ONE_36;
            seriesSum += num / 7;

            num = (num * z_squared) / ONE_36;
            seriesSum += num / 9;

            num = (num * z_squared) / ONE_36;
            seriesSum += num / 11;

            num = (num * z_squared) / ONE_36;
            seriesSum += num / 13;

            num = (num * z_squared) / ONE_36;
            seriesSum += num / 15;

            // 8 Taylor terms are sufficient for 36 decimal precision.

            // All that remains is multiplying by 2 (non fixed point).
            return seriesSum * 2;
        }
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

pragma solidity ^0.8.0;

/* solhint-disable private-vars-leading-underscore, reason-string */

library PMath {
    uint256 internal constant ONE = 1e18; // 18 decimal places
    int256 internal constant IONE = 1e18; // 18 decimal places

    function subMax0(uint256 a, uint256 b) internal pure returns (uint256) {
        unchecked {
            return (a >= b ? a - b : 0);
        }
    }

    function subNoNeg(int256 a, int256 b) internal pure returns (int256) {
        require(a >= b, "negative");
        return a - b; // no unchecked since if b is very negative, a - b might overflow
    }

    function mulDown(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 product = a * b;
        unchecked {
            return product / ONE;
        }
    }

    function mulDown(int256 a, int256 b) internal pure returns (int256) {
        int256 product = a * b;
        unchecked {
            return product / IONE;
        }
    }

    function divDown(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 aInflated = a * ONE;
        unchecked {
            return aInflated / b;
        }
    }

    function divDown(int256 a, int256 b) internal pure returns (int256) {
        int256 aInflated = a * IONE;
        unchecked {
            return aInflated / b;
        }
    }

    function rawDivUp(uint256 a, uint256 b) internal pure returns (uint256) {
        return (a + b - 1) / b;
    }

    // @author Uniswap
    function sqrt(uint256 y) internal pure returns (uint256 z) {
        if (y > 3) {
            z = y;
            uint256 x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
    }

    function square(uint256 x) internal pure returns (uint256) {
        return x * x;
    }

    function squareDown(uint256 x) internal pure returns (uint256) {
        return mulDown(x, x);
    }

    function abs(int256 x) internal pure returns (uint256) {
        return uint256(x > 0 ? x : -x);
    }

    function neg(int256 x) internal pure returns (int256) {
        return x * (-1);
    }

    function neg(uint256 x) internal pure returns (int256) {
        return Int(x) * (-1);
    }

    function max(uint256 x, uint256 y) internal pure returns (uint256) {
        return (x > y ? x : y);
    }

    function max(int256 x, int256 y) internal pure returns (int256) {
        return (x > y ? x : y);
    }

    function min(uint256 x, uint256 y) internal pure returns (uint256) {
        return (x < y ? x : y);
    }

    function min(int256 x, int256 y) internal pure returns (int256) {
        return (x < y ? x : y);
    }

    /*///////////////////////////////////////////////////////////////
                               SIGNED CASTS
    //////////////////////////////////////////////////////////////*/

    function Int(uint256 x) internal pure returns (int256) {
        require(x <= uint256(type(int256).max));
        return int256(x);
    }

    function Int128(int256 x) internal pure returns (int128) {
        require(type(int128).min <= x && x <= type(int128).max);
        return int128(x);
    }

    function Int128(uint256 x) internal pure returns (int128) {
        return Int128(Int(x));
    }

    /*///////////////////////////////////////////////////////////////
                               UNSIGNED CASTS
    //////////////////////////////////////////////////////////////*/

    function Uint(int256 x) internal pure returns (uint256) {
        require(x >= 0);
        return uint256(x);
    }

    function Uint32(uint256 x) internal pure returns (uint32) {
        require(x <= type(uint32).max);
        return uint32(x);
    }

    function Uint64(uint256 x) internal pure returns (uint64) {
        require(x <= type(uint64).max);
        return uint64(x);
    }

    function Uint112(uint256 x) internal pure returns (uint112) {
        require(x <= type(uint112).max);
        return uint112(x);
    }

    function Uint96(uint256 x) internal pure returns (uint96) {
        require(x <= type(uint96).max);
        return uint96(x);
    }

    function Uint128(uint256 x) internal pure returns (uint128) {
        require(x <= type(uint128).max);
        return uint128(x);
    }

    function Uint192(uint256 x) internal pure returns (uint192) {
        require(x <= type(uint192).max);
        return uint192(x);
    }

    function isAApproxB(uint256 a, uint256 b, uint256 eps) internal pure returns (bool) {
        return mulDown(b, ONE - eps) <= a && a <= mulDown(b, ONE + eps);
    }

    function isAGreaterApproxB(uint256 a, uint256 b, uint256 eps) internal pure returns (bool) {
        return a >= b && a <= mulDown(b, ONE + eps);
    }

    function isASmallerApproxB(uint256 a, uint256 b, uint256 eps) internal pure returns (bool) {
        return a <= b && a >= mulDown(b, ONE - eps);
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

library MiniHelpers {
    function isCurrentlyExpired(uint256 expiry) internal view returns (bool) {
        return (expiry <= block.timestamp);
    }

    function isExpired(uint256 expiry, uint256 blockTime) internal pure returns (bool) {
        return (expiry <= blockTime);
    }

    function isTimeInThePast(uint256 timestamp) internal view returns (bool) {
        return (timestamp <= block.timestamp); // same definition as isCurrentlyExpired
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

import "../libraries/math/PMath.sol";
import "../libraries/math/LogExpMath.sol";

import "../StandardizedYield/PYIndex.sol";
import "../libraries/MiniHelpers.sol";
import "../libraries/Errors.sol";

struct MarketState {
    int256 totalPt;
    int256 totalSy;
    int256 totalLp;
    address treasury;
    /// immutable variables ///
    int256 scalarRoot;
    uint256 expiry;
    /// fee data ///
    uint256 lnFeeRateRoot;
    uint256 reserveFeePercent; // base 100
    /// last trade data ///
    uint256 lastLnImpliedRate;
}

// params that are expensive to compute, therefore we pre-compute them
struct MarketPreCompute {
    int256 rateScalar;
    int256 totalAsset;
    int256 rateAnchor;
    int256 feeRate;
}

// solhint-disable ordering
library MarketMathCore {
    using PMath for uint256;
    using PMath for int256;
    using LogExpMath for int256;
    using PYIndexLib for PYIndex;

    int256 internal constant MINIMUM_LIQUIDITY = 10 ** 3;
    int256 internal constant PERCENTAGE_DECIMALS = 100;
    uint256 internal constant DAY = 86400;
    uint256 internal constant IMPLIED_RATE_TIME = 365 * DAY;

    int256 internal constant MAX_MARKET_PROPORTION = (1e18 * 96) / 100;

    using PMath for uint256;
    using PMath for int256;

    /*///////////////////////////////////////////////////////////////
                UINT FUNCTIONS TO PROXY TO CORE FUNCTIONS
    //////////////////////////////////////////////////////////////*/

    function addLiquidity(
        MarketState memory market,
        uint256 syDesired,
        uint256 ptDesired,
        uint256 blockTime
    ) internal pure returns (uint256 lpToReserve, uint256 lpToAccount, uint256 syUsed, uint256 ptUsed) {
        (int256 _lpToReserve, int256 _lpToAccount, int256 _syUsed, int256 _ptUsed) = addLiquidityCore(
            market,
            syDesired.Int(),
            ptDesired.Int(),
            blockTime
        );

        lpToReserve = _lpToReserve.Uint();
        lpToAccount = _lpToAccount.Uint();
        syUsed = _syUsed.Uint();
        ptUsed = _ptUsed.Uint();
    }

    function removeLiquidity(
        MarketState memory market,
        uint256 lpToRemove
    ) internal pure returns (uint256 netSyToAccount, uint256 netPtToAccount) {
        (int256 _syToAccount, int256 _ptToAccount) = removeLiquidityCore(market, lpToRemove.Int());

        netSyToAccount = _syToAccount.Uint();
        netPtToAccount = _ptToAccount.Uint();
    }

    function swapExactPtForSy(
        MarketState memory market,
        PYIndex index,
        uint256 exactPtToMarket,
        uint256 blockTime
    ) internal pure returns (uint256 netSyToAccount, uint256 netSyFee, uint256 netSyToReserve) {
        (int256 _netSyToAccount, int256 _netSyFee, int256 _netSyToReserve) = executeTradeCore(
            market,
            index,
            exactPtToMarket.neg(),
            blockTime
        );

        netSyToAccount = _netSyToAccount.Uint();
        netSyFee = _netSyFee.Uint();
        netSyToReserve = _netSyToReserve.Uint();
    }

    function swapSyForExactPt(
        MarketState memory market,
        PYIndex index,
        uint256 exactPtToAccount,
        uint256 blockTime
    ) internal pure returns (uint256 netSyToMarket, uint256 netSyFee, uint256 netSyToReserve) {
        (int256 _netSyToAccount, int256 _netSyFee, int256 _netSyToReserve) = executeTradeCore(
            market,
            index,
            exactPtToAccount.Int(),
            blockTime
        );

        netSyToMarket = _netSyToAccount.neg().Uint();
        netSyFee = _netSyFee.Uint();
        netSyToReserve = _netSyToReserve.Uint();
    }

    /*///////////////////////////////////////////////////////////////
                    CORE FUNCTIONS
    //////////////////////////////////////////////////////////////*/

    function addLiquidityCore(
        MarketState memory market,
        int256 syDesired,
        int256 ptDesired,
        uint256 blockTime
    ) internal pure returns (int256 lpToReserve, int256 lpToAccount, int256 syUsed, int256 ptUsed) {
        /// ------------------------------------------------------------
        /// CHECKS
        /// ------------------------------------------------------------
        if (syDesired == 0 || ptDesired == 0) revert Errors.MarketZeroAmountsInput();
        if (MiniHelpers.isExpired(market.expiry, blockTime)) revert Errors.MarketExpired();

        /// ------------------------------------------------------------
        /// MATH
        /// ------------------------------------------------------------
        if (market.totalLp == 0) {
            lpToAccount = PMath.sqrt((syDesired * ptDesired).Uint()).Int() - MINIMUM_LIQUIDITY;
            lpToReserve = MINIMUM_LIQUIDITY;
            syUsed = syDesired;
            ptUsed = ptDesired;
        } else {
            int256 netLpByPt = (ptDesired * market.totalLp) / market.totalPt;
            int256 netLpBySy = (syDesired * market.totalLp) / market.totalSy;
            if (netLpByPt < netLpBySy) {
                lpToAccount = netLpByPt;
                ptUsed = ptDesired;
                syUsed = (market.totalSy * lpToAccount) / market.totalLp;
            } else {
                lpToAccount = netLpBySy;
                syUsed = syDesired;
                ptUsed = (market.totalPt * lpToAccount) / market.totalLp;
            }
        }

        if (lpToAccount <= 0) revert Errors.MarketZeroAmountsOutput();

        /// ------------------------------------------------------------
        /// WRITE
        /// ------------------------------------------------------------
        market.totalSy += syUsed;
        market.totalPt += ptUsed;
        market.totalLp += lpToAccount + lpToReserve;
    }

    function removeLiquidityCore(
        MarketState memory market,
        int256 lpToRemove
    ) internal pure returns (int256 netSyToAccount, int256 netPtToAccount) {
        /// ------------------------------------------------------------
        /// CHECKS
        /// ------------------------------------------------------------
        if (lpToRemove == 0) revert Errors.MarketZeroAmountsInput();

        /// ------------------------------------------------------------
        /// MATH
        /// ------------------------------------------------------------
        netSyToAccount = (lpToRemove * market.totalSy) / market.totalLp;
        netPtToAccount = (lpToRemove * market.totalPt) / market.totalLp;

        if (netSyToAccount == 0 && netPtToAccount == 0) revert Errors.MarketZeroAmountsOutput();

        /// ------------------------------------------------------------
        /// WRITE
        /// ------------------------------------------------------------
        market.totalLp = market.totalLp.subNoNeg(lpToRemove);
        market.totalPt = market.totalPt.subNoNeg(netPtToAccount);
        market.totalSy = market.totalSy.subNoNeg(netSyToAccount);
    }

    function executeTradeCore(
        MarketState memory market,
        PYIndex index,
        int256 netPtToAccount,
        uint256 blockTime
    ) internal pure returns (int256 netSyToAccount, int256 netSyFee, int256 netSyToReserve) {
        /// ------------------------------------------------------------
        /// CHECKS
        /// ------------------------------------------------------------
        if (MiniHelpers.isExpired(market.expiry, blockTime)) revert Errors.MarketExpired();
        if (market.totalPt <= netPtToAccount)
            revert Errors.MarketInsufficientPtForTrade(market.totalPt, netPtToAccount);

        /// ------------------------------------------------------------
        /// MATH
        /// ------------------------------------------------------------
        MarketPreCompute memory comp = getMarketPreCompute(market, index, blockTime);

        (netSyToAccount, netSyFee, netSyToReserve) = calcTrade(market, comp, index, netPtToAccount);

        /// ------------------------------------------------------------
        /// WRITE
        /// ------------------------------------------------------------
        _setNewMarketStateTrade(market, comp, index, netPtToAccount, netSyToAccount, netSyToReserve, blockTime);
    }

    function getMarketPreCompute(
        MarketState memory market,
        PYIndex index,
        uint256 blockTime
    ) internal pure returns (MarketPreCompute memory res) {
        if (MiniHelpers.isExpired(market.expiry, blockTime)) revert Errors.MarketExpired();

        uint256 timeToExpiry = market.expiry - blockTime;

        res.rateScalar = _getRateScalar(market, timeToExpiry);
        res.totalAsset = index.syToAsset(market.totalSy);

        if (market.totalPt == 0 || res.totalAsset == 0)
            revert Errors.MarketZeroTotalPtOrTotalAsset(market.totalPt, res.totalAsset);

        res.rateAnchor = _getRateAnchor(
            market.totalPt,
            market.lastLnImpliedRate,
            res.totalAsset,
            res.rateScalar,
            timeToExpiry
        );
        res.feeRate = _getExchangeRateFromImpliedRate(market.lnFeeRateRoot, timeToExpiry);
    }

    function calcTrade(
        MarketState memory market,
        MarketPreCompute memory comp,
        PYIndex index,
        int256 netPtToAccount
    ) internal pure returns (int256 netSyToAccount, int256 netSyFee, int256 netSyToReserve) {
        int256 preFeeExchangeRate = _getExchangeRate(
            market.totalPt,
            comp.totalAsset,
            comp.rateScalar,
            comp.rateAnchor,
            netPtToAccount
        );

        int256 preFeeAssetToAccount = netPtToAccount.divDown(preFeeExchangeRate).neg();
        int256 fee = comp.feeRate;

        if (netPtToAccount > 0) {
            int256 postFeeExchangeRate = preFeeExchangeRate.divDown(fee);
            if (postFeeExchangeRate < PMath.IONE) revert Errors.MarketExchangeRateBelowOne(postFeeExchangeRate);

            fee = preFeeAssetToAccount.mulDown(PMath.IONE - fee);
        } else {
            fee = ((preFeeAssetToAccount * (PMath.IONE - fee)) / fee).neg();
        }

        int256 netAssetToReserve = (fee * market.reserveFeePercent.Int()) / PERCENTAGE_DECIMALS;
        int256 netAssetToAccount = preFeeAssetToAccount - fee;

        netSyToAccount = netAssetToAccount < 0
            ? index.assetToSyUp(netAssetToAccount)
            : index.assetToSy(netAssetToAccount);
        netSyFee = index.assetToSy(fee);
        netSyToReserve = index.assetToSy(netAssetToReserve);
    }

    function _setNewMarketStateTrade(
        MarketState memory market,
        MarketPreCompute memory comp,
        PYIndex index,
        int256 netPtToAccount,
        int256 netSyToAccount,
        int256 netSyToReserve,
        uint256 blockTime
    ) internal pure {
        uint256 timeToExpiry = market.expiry - blockTime;

        market.totalPt = market.totalPt.subNoNeg(netPtToAccount);
        market.totalSy = market.totalSy.subNoNeg(netSyToAccount + netSyToReserve);

        market.lastLnImpliedRate = _getLnImpliedRate(
            market.totalPt,
            index.syToAsset(market.totalSy),
            comp.rateScalar,
            comp.rateAnchor,
            timeToExpiry
        );

        if (market.lastLnImpliedRate == 0) revert Errors.MarketZeroLnImpliedRate();
    }

    function _getRateAnchor(
        int256 totalPt,
        uint256 lastLnImpliedRate,
        int256 totalAsset,
        int256 rateScalar,
        uint256 timeToExpiry
    ) internal pure returns (int256 rateAnchor) {
        int256 newExchangeRate = _getExchangeRateFromImpliedRate(lastLnImpliedRate, timeToExpiry);

        if (newExchangeRate < PMath.IONE) revert Errors.MarketExchangeRateBelowOne(newExchangeRate);

        {
            int256 proportion = totalPt.divDown(totalPt + totalAsset);

            int256 lnProportion = _logProportion(proportion);

            rateAnchor = newExchangeRate - lnProportion.divDown(rateScalar);
        }
    }

    /// @notice Calculates the current market implied rate.
    /// @return lnImpliedRate the implied rate
    function _getLnImpliedRate(
        int256 totalPt,
        int256 totalAsset,
        int256 rateScalar,
        int256 rateAnchor,
        uint256 timeToExpiry
    ) internal pure returns (uint256 lnImpliedRate) {
        // This will check for exchange rates < PMath.IONE
        int256 exchangeRate = _getExchangeRate(totalPt, totalAsset, rateScalar, rateAnchor, 0);

        // exchangeRate >= 1 so its ln >= 0
        uint256 lnRate = exchangeRate.ln().Uint();

        lnImpliedRate = (lnRate * IMPLIED_RATE_TIME) / timeToExpiry;
    }

    /// @notice Converts an implied rate to an exchange rate given a time to expiry. The
    /// formula is E = e^rt
    function _getExchangeRateFromImpliedRate(
        uint256 lnImpliedRate,
        uint256 timeToExpiry
    ) internal pure returns (int256 exchangeRate) {
        uint256 rt = (lnImpliedRate * timeToExpiry) / IMPLIED_RATE_TIME;

        exchangeRate = LogExpMath.exp(rt.Int());
    }

    function _getExchangeRate(
        int256 totalPt,
        int256 totalAsset,
        int256 rateScalar,
        int256 rateAnchor,
        int256 netPtToAccount
    ) internal pure returns (int256 exchangeRate) {
        int256 numerator = totalPt.subNoNeg(netPtToAccount);

        int256 proportion = (numerator.divDown(totalPt + totalAsset));

        if (proportion > MAX_MARKET_PROPORTION)
            revert Errors.MarketProportionTooHigh(proportion, MAX_MARKET_PROPORTION);

        int256 lnProportion = _logProportion(proportion);

        exchangeRate = lnProportion.divDown(rateScalar) + rateAnchor;

        if (exchangeRate < PMath.IONE) revert Errors.MarketExchangeRateBelowOne(exchangeRate);
    }

    function _logProportion(int256 proportion) internal pure returns (int256 res) {
        if (proportion == PMath.IONE) revert Errors.MarketProportionMustNotEqualOne();

        int256 logitP = proportion.divDown(PMath.IONE - proportion);

        res = logitP.ln();
    }

    function _getRateScalar(MarketState memory market, uint256 timeToExpiry) internal pure returns (int256 rateScalar) {
        rateScalar = (market.scalarRoot * IMPLIED_RATE_TIME.Int()) / timeToExpiry.Int();
        if (rateScalar <= 0) revert Errors.MarketRateScalarBelowZero(rateScalar);
    }

    function setInitialLnImpliedRate(
        MarketState memory market,
        PYIndex index,
        int256 initialAnchor,
        uint256 blockTime
    ) internal pure {
        /// ------------------------------------------------------------
        /// CHECKS
        /// ------------------------------------------------------------
        if (MiniHelpers.isExpired(market.expiry, blockTime)) revert Errors.MarketExpired();

        /// ------------------------------------------------------------
        /// MATH
        /// ------------------------------------------------------------
        int256 totalAsset = index.syToAsset(market.totalSy);
        uint256 timeToExpiry = market.expiry - blockTime;
        int256 rateScalar = _getRateScalar(market, timeToExpiry);

        /// ------------------------------------------------------------
        /// WRITE
        /// ------------------------------------------------------------
        market.lastLnImpliedRate = _getLnImpliedRate(
            market.totalPt,
            totalAsset,
            rateScalar,
            initialAnchor,
            timeToExpiry
        );
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
import "../../interfaces/IPYieldToken.sol";
import "../../interfaces/IPPrincipalToken.sol";

import "./SYUtils.sol";
import "../libraries/math/PMath.sol";

type PYIndex is uint256;

library PYIndexLib {
    using PMath for uint256;
    using PMath for int256;

    function newIndex(IPYieldToken YT) internal returns (PYIndex) {
        return PYIndex.wrap(YT.pyIndexCurrent());
    }

    function syToAsset(PYIndex index, uint256 syAmount) internal pure returns (uint256) {
        return SYUtils.syToAsset(PYIndex.unwrap(index), syAmount);
    }

    function assetToSy(PYIndex index, uint256 assetAmount) internal pure returns (uint256) {
        return SYUtils.assetToSy(PYIndex.unwrap(index), assetAmount);
    }

    function assetToSyUp(PYIndex index, uint256 assetAmount) internal pure returns (uint256) {
        return SYUtils.assetToSyUp(PYIndex.unwrap(index), assetAmount);
    }

    function syToAssetUp(PYIndex index, uint256 syAmount) internal pure returns (uint256) {
        uint256 _index = PYIndex.unwrap(index);
        return SYUtils.syToAssetUp(_index, syAmount);
    }

    function syToAsset(PYIndex index, int256 syAmount) internal pure returns (int256) {
        int256 sign = syAmount < 0 ? int256(-1) : int256(1);
        return sign * (SYUtils.syToAsset(PYIndex.unwrap(index), syAmount.abs())).Int();
    }

    function assetToSy(PYIndex index, int256 assetAmount) internal pure returns (int256) {
        int256 sign = assetAmount < 0 ? int256(-1) : int256(1);
        return sign * (SYUtils.assetToSy(PYIndex.unwrap(index), assetAmount.abs())).Int();
    }

    function assetToSyUp(PYIndex index, int256 assetAmount) internal pure returns (int256) {
        int256 sign = assetAmount < 0 ? int256(-1) : int256(1);
        return sign * (SYUtils.assetToSyUp(PYIndex.unwrap(index), assetAmount.abs())).Int();
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

library SYUtils {
    uint256 internal constant ONE = 1e18;

    function syToAsset(uint256 exchangeRate, uint256 syAmount) internal pure returns (uint256) {
        return (syAmount * exchangeRate) / ONE;
    }

    function syToAssetUp(uint256 exchangeRate, uint256 syAmount) internal pure returns (uint256) {
        return (syAmount * exchangeRate + ONE - 1) / ONE;
    }

    function assetToSy(uint256 exchangeRate, uint256 assetAmount) internal pure returns (uint256) {
        return (assetAmount * ONE) / exchangeRate;
    }

    function assetToSyUp(uint256 exchangeRate, uint256 assetAmount) internal pure returns (uint256) {
        return (assetAmount * ONE + exchangeRate - 1) / exchangeRate;
    }
}

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

/******************************************************************************\
* Author: Nick Mudge <[email protected]> (https://twitter.com/mudgen)
* EIP-2535 Diamonds: https://eips.ethereum.org/EIPS/eip-2535
/******************************************************************************/

interface IDiamondCut {
    enum FacetCutAction {
        Add,
        Replace,
        Remove
    }
    // Add=0, Replace=1, Remove=2

    struct FacetCut {
        address facetAddress;
        FacetCutAction action;
        bytes4[] functionSelectors;
    }

    /// @notice Add/replace/remove any number of functions and optionally execute
    ///         a function with delegatecall
    /// @param _diamondCut Contains the facet addresses and function selectors
    /// @param _init The address of the contract or facet to execute _calldata
    /// @param _calldata A function call, including function selector and arguments
    ///                  _calldata is executed with delegatecall on _init
    function diamondCut(FacetCut[] calldata _diamondCut, address _init, bytes calldata _calldata) external;

    event DiamondCut(FacetCut[] _diamondCut, address _init, bytes _calldata);
}

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

/******************************************************************************\
* Author: Nick Mudge <[email protected]> (https://twitter.com/mudgen)
* EIP-2535 Diamonds: https://eips.ethereum.org/EIPS/eip-2535
/******************************************************************************/

// A loupe is a small magnifying glass used to look at diamonds.
// These functions look at diamonds
interface IDiamondLoupe {
    /// These functions are expected to be called frequently
    /// by tools.

    struct Facet {
        address facetAddress;
        bytes4[] functionSelectors;
    }

    /// @notice Gets all facet addresses and their four byte function selectors.
    /// @return facets_ Facet
    function facets() external view returns (Facet[] memory facets_);

    /// @notice Gets all the function selectors supported by a specific facet.
    /// @param _facet The facet address.
    /// @return facetFunctionSelectors_
    function facetFunctionSelectors(address _facet) external view returns (bytes4[] memory facetFunctionSelectors_);

    /// @notice Get all the facet addresses used by a diamond.
    /// @return facetAddresses_
    function facetAddresses() external view returns (address[] memory facetAddresses_);

    /// @notice Gets the facet that supports the given selector.
    /// @dev If facet is not found return address(0).
    /// @param _functionSelector The function selector.
    /// @return facetAddress_ The facet address.
    function facetAddress(bytes4 _functionSelector) external view returns (address facetAddress_);
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

import "../router/base/MarketApproxLib.sol";
import "./IPAllActionTypeV3.sol";

interface IPActionAddRemoveLiqV3 {
    event AddLiquidityDualSyAndPt(
        address indexed caller,
        address indexed market,
        address indexed receiver,
        uint256 netSyUsed,
        uint256 netPtUsed,
        uint256 netLpOut
    );

    event AddLiquidityDualTokenAndPt(
        address indexed caller,
        address indexed market,
        address indexed tokenIn,
        address receiver,
        uint256 netTokenUsed,
        uint256 netPtUsed,
        uint256 netLpOut,
        uint256 netSyInterm
    );

    event AddLiquiditySinglePt(
        address indexed caller,
        address indexed market,
        address indexed receiver,
        uint256 netPtIn,
        uint256 netLpOut
    );

    event AddLiquiditySingleSy(
        address indexed caller,
        address indexed market,
        address indexed receiver,
        uint256 netSyIn,
        uint256 netLpOut
    );

    event AddLiquiditySingleToken(
        address indexed caller,
        address indexed market,
        address indexed token,
        address receiver,
        uint256 netTokenIn,
        uint256 netLpOut,
        uint256 netSyInterm
    );

    event AddLiquiditySingleSyKeepYt(
        address indexed caller,
        address indexed market,
        address indexed receiver,
        uint256 netSyIn,
        uint256 netSyMintPy,
        uint256 netLpOut,
        uint256 netYtOut
    );

    event AddLiquiditySingleTokenKeepYt(
        address indexed caller,
        address indexed market,
        address indexed token,
        address receiver,
        uint256 netTokenIn,
        uint256 netSyMintPy,
        uint256 netLpOut,
        uint256 netYtOut,
        uint256 netSyInterm
    );

    event RemoveLiquidityDualSyAndPt(
        address indexed caller,
        address indexed market,
        address indexed receiver,
        uint256 netLpToRemove,
        uint256 netPtOut,
        uint256 netSyOut
    );

    event RemoveLiquidityDualTokenAndPt(
        address indexed caller,
        address indexed market,
        address indexed tokenOut,
        address receiver,
        uint256 netLpToRemove,
        uint256 netPtOut,
        uint256 netTokenOut,
        uint256 netSyInterm
    );

    event RemoveLiquiditySinglePt(
        address indexed caller,
        address indexed market,
        address indexed receiver,
        uint256 netLpToRemove,
        uint256 netPtOut
    );

    event RemoveLiquiditySingleSy(
        address indexed caller,
        address indexed market,
        address indexed receiver,
        uint256 netLpToRemove,
        uint256 netSyOut
    );

    event RemoveLiquiditySingleToken(
        address indexed caller,
        address indexed market,
        address indexed token,
        address receiver,
        uint256 netLpToRemove,
        uint256 netTokenOut,
        uint256 netSyInterm
    );

    function addLiquidityDualTokenAndPt(
        address receiver,
        address market,
        TokenInput calldata input,
        uint256 netPtDesired,
        uint256 minLpOut
    ) external payable returns (uint256 netLpOut, uint256 netPtUsed, uint256 netSyInterm);

    function addLiquidityDualSyAndPt(
        address receiver,
        address market,
        uint256 netSyDesired,
        uint256 netPtDesired,
        uint256 minLpOut
    ) external returns (uint256 netLpOut, uint256 netSyUsed, uint256 netPtUsed);

    function addLiquiditySinglePt(
        address receiver,
        address market,
        uint256 netPtIn,
        uint256 minLpOut,
        ApproxParams calldata guessPtSwapToSy,
        LimitOrderData calldata limit
    ) external returns (uint256 netLpOut, uint256 netSyFee);

    function addLiquiditySingleToken(
        address receiver,
        address market,
        uint256 minLpOut,
        ApproxParams calldata guessPtReceivedFromSy,
        TokenInput calldata input,
        LimitOrderData calldata limit
    ) external payable returns (uint256 netLpOut, uint256 netSyFee, uint256 netSyInterm);

    function addLiquiditySingleSy(
        address receiver,
        address market,
        uint256 netSyIn,
        uint256 minLpOut,
        ApproxParams calldata guessPtReceivedFromSy,
        LimitOrderData calldata limit
    ) external returns (uint256 netLpOut, uint256 netSyFee);

    function addLiquiditySingleTokenKeepYt(
        address receiver,
        address market,
        uint256 minLpOut,
        uint256 minYtOut,
        TokenInput calldata input
    ) external payable returns (uint256 netLpOut, uint256 netYtOut, uint256 netSyMintPy, uint256 netSyInterm);

    function addLiquiditySingleSyKeepYt(
        address receiver,
        address market,
        uint256 netSyIn,
        uint256 minLpOut,
        uint256 minYtOut
    ) external returns (uint256 netLpOut, uint256 netYtOut, uint256 netSyMintPy);

    function removeLiquidityDualTokenAndPt(
        address receiver,
        address market,
        uint256 netLpToRemove,
        TokenOutput calldata output,
        uint256 minPtOut
    ) external returns (uint256 netTokenOut, uint256 netPtOut, uint256 netSyInterm);

    function removeLiquidityDualSyAndPt(
        address receiver,
        address market,
        uint256 netLpToRemove,
        uint256 minSyOut,
        uint256 minPtOut
    ) external returns (uint256 netSyOut, uint256 netPtOut);

    function removeLiquiditySinglePt(
        address receiver,
        address market,
        uint256 netLpToRemove,
        uint256 minPtOut,
        ApproxParams calldata guessPtReceivedFromSy,
        LimitOrderData calldata limit
    ) external returns (uint256 netPtOut, uint256 netSyFee);
    function removeLiquiditySingleToken(
        address receiver,
        address market,
        uint256 netLpToRemove,
        TokenOutput calldata output,
        LimitOrderData calldata limit
    ) external returns (uint256 netTokenOut, uint256 netSyFee, uint256 netSyInterm);

    function removeLiquiditySingleSy(
        address receiver,
        address market,
        uint256 netLpToRemove,
        uint256 minSyOut,
        LimitOrderData calldata limit
    ) external returns (uint256 netSyOut, uint256 netSyFee);
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

import "./IPMarketSwapCallback.sol";
import "./IPLimitRouter.sol";

interface IPActionCallbackV3 is IPMarketSwapCallback, IPLimitRouterCallback {}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

import "../router/base/MarketApproxLib.sol";
import "./IPAllActionTypeV3.sol";

interface IPActionMiscV3 {
    struct Call3 {
        bool allowFailure;
        bytes callData;
    }

    struct Result {
        bool success;
        bytes returnData;
    }

    event MintSyFromToken(
        address indexed caller,
        address indexed tokenIn,
        address indexed SY,
        address receiver,
        uint256 netTokenIn,
        uint256 netSyOut
    );

    event RedeemSyToToken(
        address indexed caller,
        address indexed tokenOut,
        address indexed SY,
        address receiver,
        uint256 netSyIn,
        uint256 netTokenOut
    );

    event MintPyFromSy(
        address indexed caller,
        address indexed receiver,
        address indexed YT,
        uint256 netSyIn,
        uint256 netPyOut
    );

    event RedeemPyToSy(
        address indexed caller,
        address indexed receiver,
        address indexed YT,
        uint256 netPyIn,
        uint256 netSyOut
    );

    event MintPyFromToken(
        address indexed caller,
        address indexed tokenIn,
        address indexed YT,
        address receiver,
        uint256 netTokenIn,
        uint256 netPyOut,
        uint256 netSyInterm
    );

    event RedeemPyToToken(
        address indexed caller,
        address indexed tokenOut,
        address indexed YT,
        address receiver,
        uint256 netPyIn,
        uint256 netTokenOut,
        uint256 netSyInterm
    );

    function mintSyFromToken(
        address receiver,
        address SY,
        uint256 minSyOut,
        TokenInput calldata input
    ) external payable returns (uint256 netSyOut);

    function redeemSyToToken(
        address receiver,
        address SY,
        uint256 netSyIn,
        TokenOutput calldata output
    ) external returns (uint256 netTokenOut);

    function mintPyFromToken(
        address receiver,
        address YT,
        uint256 minPyOut,
        TokenInput calldata input
    ) external payable returns (uint256 netPyOut, uint256 netSyInterm);

    function redeemPyToToken(
        address receiver,
        address YT,
        uint256 netPyIn,
        TokenOutput calldata output
    ) external returns (uint256 netTokenOut, uint256 netSyInterm);

    function mintPyFromSy(
        address receiver,
        address YT,
        uint256 netSyIn,
        uint256 minPyOut
    ) external returns (uint256 netPyOut);

    function redeemPyToSy(
        address receiver,
        address YT,
        uint256 netPyIn,
        uint256 minSyOut
    ) external returns (uint256 netSyOut);

    function redeemDueInterestAndRewards(
        address user,
        address[] calldata sys,
        address[] calldata yts,
        address[] calldata markets
    ) external;

    function swapTokenToToken(
        address receiver,
        uint256 minTokenOut,
        TokenInput calldata inp
    ) external payable returns (uint256 netTokenOut);

    function swapTokenToTokenViaSy(
        address receiver,
        address SY,
        TokenInput calldata input,
        address tokenRedeemSy,
        uint256 minTokenOut
    ) external payable returns (uint256 netTokenOut, uint256 netSyInterm);

    function boostMarkets(address[] memory markets) external;

    function multicall(Call3[] calldata calls) external payable returns (Result[] memory res);

    function simulate(address target, bytes calldata data) external payable;
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

import "../router/base/MarketApproxLib.sol";
import "./IPAllActionTypeV3.sol";

interface IPActionSwapPTV3 {
    event SwapPtAndSy(
        address indexed caller,
        address indexed market,
        address indexed receiver,
        int256 netPtToAccount,
        int256 netSyToAccount
    );

    event SwapPtAndToken(
        address indexed caller,
        address indexed market,
        address indexed token,
        address receiver,
        int256 netPtToAccount,
        int256 netTokenToAccount,
        uint256 netSyInterm
    );

    function swapExactTokenForPt(
        address receiver,
        address market,
        uint256 minPtOut,
        ApproxParams calldata guessPtOut,
        TokenInput calldata input,
        LimitOrderData calldata limit
    ) external payable returns (uint256 netPtOut, uint256 netSyFee, uint256 netSyInterm);

    function swapExactSyForPt(
        address receiver,
        address market,
        uint256 exactSyIn,
        uint256 minPtOut,
        ApproxParams calldata guessPtOut,
        LimitOrderData calldata limit
    ) external returns (uint256 netPtOut, uint256 netSyFee);

    function swapExactPtForToken(
        address receiver,
        address market,
        uint256 exactPtIn,
        TokenOutput calldata output,
        LimitOrderData calldata limit
    ) external returns (uint256 netTokenOut, uint256 netSyFee, uint256 netSyInterm);

    function swapExactPtForSy(
        address receiver,
        address market,
        uint256 exactPtIn,
        uint256 minSyOut,
        LimitOrderData calldata limit
    ) external returns (uint256 netSyOut, uint256 netSyFee);
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

import "../router/base/MarketApproxLib.sol";
import "./IPAllActionTypeV3.sol";

interface IPActionSwapYTV3 {
    event SwapYtAndSy(
        address indexed caller,
        address indexed market,
        address indexed receiver,
        int256 netYtToAccount,
        int256 netSyToAccount
    );

    event SwapYtAndToken(
        address indexed caller,
        address indexed market,
        address indexed token,
        address receiver,
        int256 netYtToAccount,
        int256 netTokenToAccount,
        uint256 netSyInterm
    );

    event SwapPtAndYt(
        address indexed caller,
        address indexed market,
        address indexed receiver,
        int256 netPtToAccount,
        int256 netYtToAccount
    );

    function swapExactTokenForYt(
        address receiver,
        address market,
        uint256 minYtOut,
        ApproxParams calldata guessYtOut,
        TokenInput calldata input,
        LimitOrderData calldata limit
    ) external payable returns (uint256 netYtOut, uint256 netSyFee, uint256 netSyInterm);

    function swapExactSyForYt(
        address receiver,
        address market,
        uint256 exactSyIn,
        uint256 minYtOut,
        ApproxParams calldata guessYtOut,
        LimitOrderData calldata limit
    ) external returns (uint256 netYtOut, uint256 netSyFee);

    function swapExactYtForToken(
        address receiver,
        address market,
        uint256 exactYtIn,
        TokenOutput calldata output,
        LimitOrderData calldata limit
    ) external returns (uint256 netTokenOut, uint256 netSyFee, uint256 netSyInterm);

    function swapExactYtForSy(
        address receiver,
        address market,
        uint256 exactYtIn,
        uint256 minSyOut,
        LimitOrderData calldata limit
    ) external returns (uint256 netSyOut, uint256 netSyFee);

    function swapExactPtForYt(
        address receiver,
        address market,
        uint256 exactPtIn,
        uint256 minYtOut,
        ApproxParams calldata guessTotalPtToSwap
    ) external returns (uint256 netYtOut, uint256 netSyFee);

    function swapExactYtForPt(
        address receiver,
        address market,
        uint256 exactYtIn,
        uint256 minPtOut,
        ApproxParams calldata guessTotalPtFromSwap
    ) external returns (uint256 netPtOut, uint256 netSyFee);
}

// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity ^0.8.0;

import "../router/swap-aggregator/IPSwapAggregator.sol";
import "./IPLimitRouter.sol";

struct TokenInput {
    // Token/Sy data
    address tokenIn;
    uint256 netTokenIn;
    address tokenMintSy;
    // aggregator data
    address pendleSwap;
    SwapData swapData;
}

struct TokenOutput {
    // Token/Sy data
    address tokenOut;
    uint256 minTokenOut;
    address tokenRedeemSy;
    // aggregator data
    address pendleSwap;
    SwapData swapData;
}

struct LimitOrderData {
    address limitRouter;
    uint256 epsSkipMarket; // only used for swap operations, will be ignored otherwise
    FillOrderParams[] normalFills;
    FillOrderParams[] flashFills;
    bytes optData;
}

// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity ^0.8.0;

import "./IPActionAddRemoveLiqV3.sol";
import "./IPActionSwapPTV3.sol";
import "./IPActionSwapYTV3.sol";
import "./IPActionMiscV3.sol";
import "./IPActionCallbackV3.sol";
import "./IDiamondLoupe.sol";

interface IPAllActionV3 is
    IPActionAddRemoveLiqV3,
    IPActionSwapPTV3,
    IPActionSwapYTV3,
    IPActionMiscV3,
    IPActionCallbackV3,
    IDiamondLoupe
{}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

interface IPInterestManagerYT {
    event CollectInterestFee(uint256 amountInterestFee);

    function userInterest(address user) external view returns (uint128 lastPYIndex, uint128 accruedInterest);
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

import "../core/StandardizedYield/PYIndex.sol";

interface IPLimitOrderType {
    enum OrderType {
        SY_FOR_PT,
        PT_FOR_SY,
        SY_FOR_YT,
        YT_FOR_SY
    }

    // Fixed-size order part with core information
    struct StaticOrder {
        uint256 salt;
        uint256 expiry;
        uint256 nonce;
        OrderType orderType;
        address token;
        address YT;
        address maker;
        address receiver;
        uint256 makingAmount;
        uint256 lnImpliedRate;
        uint256 failSafeRate;
    }

    struct FillResults {
        uint256 totalMaking;
        uint256 totalTaking;
        uint256 totalFee;
        uint256 totalNotionalVolume;
        uint256[] netMakings;
        uint256[] netTakings;
        uint256[] netFees;
        uint256[] notionalVolumes;
    }
}

struct Order {
    uint256 salt;
    uint256 expiry;
    uint256 nonce;
    IPLimitOrderType.OrderType orderType;
    address token;
    address YT;
    address maker;
    address receiver;
    uint256 makingAmount;
    uint256 lnImpliedRate;
    uint256 failSafeRate;
    bytes permit;
}

struct FillOrderParams {
    Order order;
    bytes signature;
    uint256 makingAmount;
}

interface IPLimitRouterCallback is IPLimitOrderType {
    function limitRouterCallback(
        uint256 actualMaking,
        uint256 actualTaking,
        uint256 totalFee,
        bytes memory data
    ) external returns (bytes memory);
}

interface IPLimitRouter is IPLimitOrderType {
    struct OrderStatus {
        uint128 filledAmount;
        uint128 remaining;
    }

    event OrderCanceled(address indexed maker, bytes32 indexed orderHash);

    event OrderFilled(
        bytes32 indexed orderHash,
        OrderType indexed orderType,
        address indexed YT,
        address token,
        uint256 netInputFromMaker,
        uint256 netOutputToMaker,
        uint256 feeAmount,
        uint256 notionalVolume
    );

    // @dev actualMaking, actualTaking are in the SY form
    function fill(
        FillOrderParams[] memory params,
        address receiver,
        uint256 maxTaking,
        bytes calldata optData,
        bytes calldata callback
    ) external returns (uint256 actualMaking, uint256 actualTaking, uint256 totalFee, bytes memory callbackReturn);

    function feeRecipient() external view returns (address);

    function hashOrder(Order memory order) external view returns (bytes32);

    function cancelSingle(Order calldata order) external;

    function cancelBatch(Order[] calldata orders) external;

    function orderStatusesRaw(
        bytes32[] memory orderHashes
    ) external view returns (uint256[] memory remainingsRaw, uint256[] memory filledAmounts);

    function orderStatuses(
        bytes32[] memory orderHashes
    ) external view returns (uint256[] memory remainings, uint256[] memory filledAmounts);

    function DOMAIN_SEPARATOR() external view returns (bytes32);

    function simulate(address target, bytes calldata data) external payable;
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

interface IPMarketSwapCallback {
    function swapCallback(int256 ptToAccount, int256 syToAccount, bytes calldata data) external;
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";

interface IPPrincipalToken is IERC20Metadata {
    function burnByYT(address user, uint256 amount) external;

    function mintByYT(address user, uint256 amount) external;

    function initialize(address _YT) external;

    function SY() external view returns (address);

    function YT() external view returns (address);

    function factory() external view returns (address);

    function expiry() external view returns (uint256);

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

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import "./IRewardManager.sol";
import "./IPInterestManagerYT.sol";

interface IPYieldToken is IERC20Metadata, IRewardManager, IPInterestManagerYT {
    event NewInterestIndex(uint256 indexed newIndex);

    event Mint(
        address indexed caller,
        address indexed receiverPT,
        address indexed receiverYT,
        uint256 amountSyToMint,
        uint256 amountPYOut
    );

    event Burn(address indexed caller, address indexed receiver, uint256 amountPYToRedeem, uint256 amountSyOut);

    event RedeemRewards(address indexed user, uint256[] amountRewardsOut);

    event RedeemInterest(address indexed user, uint256 interestOut);

    event CollectRewardFee(address indexed rewardToken, uint256 amountRewardFee);

    function mintPY(address receiverPT, address receiverYT) external returns (uint256 amountPYOut);

    function redeemPY(address receiver) external returns (uint256 amountSyOut);

    function redeemPYMulti(
        address[] calldata receivers,
        uint256[] calldata amountPYToRedeems
    ) external returns (uint256[] memory amountSyOuts);

    function redeemDueInterestAndRewards(
        address user,
        bool redeemInterest,
        bool redeemRewards
    ) external returns (uint256 interestOut, uint256[] memory rewardsOut);

    function rewardIndexesCurrent() external returns (uint256[] memory);

    function pyIndexCurrent() external returns (uint256);

    function pyIndexStored() external view returns (uint256);

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

    function SY() external view returns (address);

    function PT() external view returns (address);

    function factory() external view returns (address);

    function expiry() external view returns (uint256);

    function isExpired() external view returns (bool);

    function doCacheIndexSameBlock() external view returns (bool);

    function pyIndexLastUpdatedBlock() external view returns (uint128);
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

interface IRewardManager {
    function userReward(address token, address user) external view returns (uint128 index, uint128 accrued);
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

import "../../core/libraries/math/PMath.sol";
import "../../core/Market/MarketMathCore.sol";

struct ApproxParams {
    uint256 guessMin;
    uint256 guessMax;
    uint256 guessOffchain; // pass 0 in to skip this variable
    uint256 maxIteration; // every iteration, the diff between guessMin and guessMax will be divided by 2
    uint256 eps; // the max eps between the returned result & the correct result, base 1e18. Normally this number will be set
    // to 1e15 (1e18/1000 = 0.1%)
}

/// Further explanation of the eps. Take swapExactSyForPt for example. To calc the corresponding amount of Pt to swap out,
/// it's necessary to run an approximation algorithm, because by default there only exists the Pt to Sy formula
/// To approx, the 5 values above will have to be provided, and the approx process will run as follows:
/// mid = (guessMin + guessMax) / 2 // mid here is the current guess of the amount of Pt out
/// netSyNeed = calcSwapSyForExactPt(mid)
/// if (netSyNeed > exactSyIn) guessMax = mid - 1 // since the maximum Sy in can't exceed the exactSyIn
/// else guessMin = mid (1)
/// For the (1), since netSyNeed <= exactSyIn, the result might be usable. If the netSyNeed is within eps of
/// exactSyIn (ex eps=0.1% => we have used 99.9% the amount of Sy specified), mid will be chosen as the final guess result

/// for guessOffchain, this is to provide a shortcut to guessing. The offchain SDK can precalculate the exact result
/// before the tx is sent. When the tx reaches the contract, the guessOffchain will be checked first, and if it satisfies the
/// approximation, it will be used (and save all the guessing). It's expected that this shortcut will be used in most cases
/// except in cases that there is a trade in the same market right before the tx

library MarketApproxPtInLib {
    using MarketMathCore for MarketState;
    using PYIndexLib for PYIndex;
    using PMath for uint256;
    using PMath for int256;
    using LogExpMath for int256;

    /**
     * @dev algorithm:
     *     - Bin search the amount of PT to swap in
     *     - Try swapping & get netSyOut
     *     - Stop when netSyOut greater & approx minSyOut
     *     - guess & approx is for netPtIn
     */
    function approxSwapPtForExactSy(
        MarketState memory market,
        PYIndex index,
        uint256 minSyOut,
        uint256 blockTime,
        ApproxParams memory approx
    ) internal pure returns (uint256, /*netPtIn*/ uint256, /*netSyOut*/ uint256 /*netSyFee*/) {
        MarketPreCompute memory comp = market.getMarketPreCompute(index, blockTime);
        if (approx.guessOffchain == 0) {
            // no limit on min
            approx.guessMax = PMath.min(approx.guessMax, calcMaxPtIn(market, comp));
            validateApprox(approx);
        }

        for (uint256 iter = 0; iter < approx.maxIteration; ++iter) {
            uint256 guess = nextGuess(approx, iter);
            (uint256 netSyOut, uint256 netSyFee, ) = calcSyOut(market, comp, index, guess);

            if (netSyOut >= minSyOut) {
                if (PMath.isAGreaterApproxB(netSyOut, minSyOut, approx.eps)) {
                    return (guess, netSyOut, netSyFee);
                }
                approx.guessMax = guess;
            } else {
                approx.guessMin = guess;
            }
        }
        revert Errors.ApproxFail();
    }

    /**
     * @dev algorithm:
     *     - Bin search the amount of PT to swap in
     *     - Flashswap the corresponding amount of SY out
     *     - Pair those amount with exactSyIn SY to tokenize into PT & YT
     *     - PT to repay the flashswap, YT transferred to user
     *     - Stop when the amount of SY to be pulled to tokenize PT to repay loan approx the exactSyIn
     *     - guess & approx is for netYtOut (also netPtIn)
     */
    function approxSwapExactSyForYt(
        MarketState memory market,
        PYIndex index,
        uint256 exactSyIn,
        uint256 blockTime,
        ApproxParams memory approx
    ) internal pure returns (uint256, /*netYtOut*/ uint256 /*netSyFee*/) {
        MarketPreCompute memory comp = market.getMarketPreCompute(index, blockTime);
        if (approx.guessOffchain == 0) {
            approx.guessMin = PMath.max(approx.guessMin, index.syToAsset(exactSyIn));
            approx.guessMax = PMath.min(approx.guessMax, calcMaxPtIn(market, comp));
            validateApprox(approx);
        }

        // at minimum we will flashswap exactSyIn since we have enough SY to payback the PT loan

        for (uint256 iter = 0; iter < approx.maxIteration; ++iter) {
            uint256 guess = nextGuess(approx, iter);

            (uint256 netSyOut, uint256 netSyFee, ) = calcSyOut(market, comp, index, guess);

            uint256 netSyToTokenizePt = index.assetToSyUp(guess);

            // for sure netSyToTokenizePt >= netSyOut since we are swapping PT to SY
            uint256 netSyToPull = netSyToTokenizePt - netSyOut;

            if (netSyToPull <= exactSyIn) {
                if (PMath.isASmallerApproxB(netSyToPull, exactSyIn, approx.eps)) {
                    return (guess, netSyFee);
                }
                approx.guessMin = guess;
            } else {
                approx.guessMax = guess - 1;
            }
        }
        revert Errors.ApproxFail();
    }

    struct Args5 {
        MarketState market;
        PYIndex index;
        uint256 totalPtIn;
        uint256 netSyHolding;
        uint256 blockTime;
        ApproxParams approx;
    }

    /**
     * @dev algorithm:
     *     - Bin search the amount of PT to swap to SY
     *     - Swap PT to SY
     *     - Pair the remaining PT with the SY to add liquidity
     *     - Stop when the ratio of PT / totalPt & SY / totalSy is approx
     *     - guess & approx is for netPtSwap
     */
    function approxSwapPtToAddLiquidity(
        MarketState memory _market,
        PYIndex _index,
        uint256 _totalPtIn,
        uint256 _netSyHolding,
        uint256 _blockTime,
        ApproxParams memory approx
    ) internal pure returns (uint256, /*netPtSwap*/ uint256, /*netSyFromSwap*/ uint256 /*netSyFee*/) {
        Args5 memory a = Args5(_market, _index, _totalPtIn, _netSyHolding, _blockTime, approx);
        MarketPreCompute memory comp = a.market.getMarketPreCompute(a.index, a.blockTime);
        if (approx.guessOffchain == 0) {
            // no limit on min
            approx.guessMax = PMath.min(approx.guessMax, calcMaxPtIn(a.market, comp));
            approx.guessMax = PMath.min(approx.guessMax, a.totalPtIn);
            validateApprox(approx);
            require(a.market.totalLp != 0, "no existing lp");
        }

        for (uint256 iter = 0; iter < approx.maxIteration; ++iter) {
            uint256 guess = nextGuess(approx, iter);

            (uint256 syNumerator, uint256 ptNumerator, uint256 netSyOut, uint256 netSyFee, ) = calcNumerators(
                a.market,
                a.index,
                a.totalPtIn,
                a.netSyHolding,
                comp,
                guess
            );

            if (PMath.isAApproxB(syNumerator, ptNumerator, approx.eps)) {
                return (guess, netSyOut, netSyFee);
            }

            if (syNumerator <= ptNumerator) {
                // needs more SY --> swap more PT
                approx.guessMin = guess + 1;
            } else {
                // needs less SY --> swap less PT
                approx.guessMax = guess - 1;
            }
        }
        revert Errors.ApproxFail();
    }

    function calcNumerators(
        MarketState memory market,
        PYIndex index,
        uint256 totalPtIn,
        uint256 netSyHolding,
        MarketPreCompute memory comp,
        uint256 guess
    )
        internal
        pure
        returns (uint256 syNumerator, uint256 ptNumerator, uint256 netSyOut, uint256 netSyFee, uint256 netSyToReserve)
    {
        (netSyOut, netSyFee, netSyToReserve) = calcSyOut(market, comp, index, guess);

        uint256 newTotalPt = uint256(market.totalPt) + guess;
        uint256 newTotalSy = (uint256(market.totalSy) - netSyOut - netSyToReserve);

        // it is desired that
        // (netSyOut + netSyHolding) / newTotalSy = netPtRemaining / newTotalPt
        // which is equivalent to
        // (netSyOut + netSyHolding) * newTotalPt = netPtRemaining * newTotalSy

        syNumerator = (netSyOut + netSyHolding) * newTotalPt;
        ptNumerator = (totalPtIn - guess) * newTotalSy;
    }

    /**
     * @dev algorithm:
     *     - Bin search the amount of PT to swap to SY
     *     - Flashswap the corresponding amount of SY out
     *     - Tokenize all the SY into PT + YT
     *     - PT to repay the flashswap, YT transferred to user
     *     - Stop when the additional amount of PT to pull to repay the loan approx the exactPtIn
     *     - guess & approx is for totalPtToSwap
     */
    function approxSwapExactPtForYt(
        MarketState memory market,
        PYIndex index,
        uint256 exactPtIn,
        uint256 blockTime,
        ApproxParams memory approx
    ) internal pure returns (uint256, /*netYtOut*/ uint256, /*totalPtToSwap*/ uint256 /*netSyFee*/) {
        MarketPreCompute memory comp = market.getMarketPreCompute(index, blockTime);
        if (approx.guessOffchain == 0) {
            approx.guessMin = PMath.max(approx.guessMin, exactPtIn);
            approx.guessMax = PMath.min(approx.guessMax, calcMaxPtIn(market, comp));
            validateApprox(approx);
        }

        for (uint256 iter = 0; iter < approx.maxIteration; ++iter) {
            uint256 guess = nextGuess(approx, iter);

            (uint256 netSyOut, uint256 netSyFee, ) = calcSyOut(market, comp, index, guess);

            uint256 netAssetOut = index.syToAsset(netSyOut);

            // guess >= netAssetOut since we are swapping PT to SY
            uint256 netPtToPull = guess - netAssetOut;

            if (netPtToPull <= exactPtIn) {
                if (PMath.isASmallerApproxB(netPtToPull, exactPtIn, approx.eps)) {
                    return (netAssetOut, guess, netSyFee);
                }
                approx.guessMin = guess;
            } else {
                approx.guessMax = guess - 1;
            }
        }
        revert Errors.ApproxFail();
    }

    ////////////////////////////////////////////////////////////////////////////////

    function calcSyOut(
        MarketState memory market,
        MarketPreCompute memory comp,
        PYIndex index,
        uint256 netPtIn
    ) internal pure returns (uint256 netSyOut, uint256 netSyFee, uint256 netSyToReserve) {
        (int256 _netSyOut, int256 _netSyFee, int256 _netSyToReserve) = market.calcTrade(comp, index, -int256(netPtIn));
        netSyOut = uint256(_netSyOut);
        netSyFee = uint256(_netSyFee);
        netSyToReserve = uint256(_netSyToReserve);
    }

    function nextGuess(ApproxParams memory approx, uint256 iter) internal pure returns (uint256) {
        if (iter == 0 && approx.guessOffchain != 0) return approx.guessOffchain;
        if (approx.guessMin <= approx.guessMax) return (approx.guessMin + approx.guessMax) / 2;
        revert Errors.ApproxFail();
    }

    /// INTENDED TO BE CALLED BY WHEN GUESS.OFFCHAIN == 0 ONLY ///

    function validateApprox(ApproxParams memory approx) internal pure {
        if (approx.guessMin > approx.guessMax || approx.eps > PMath.ONE) {
            revert Errors.ApproxParamsInvalid(approx.guessMin, approx.guessMax, approx.eps);
        }
    }

    function calcMaxPtIn(MarketState memory market, MarketPreCompute memory comp) internal pure returns (uint256) {
        uint256 low = 0;
        uint256 hi = uint256(comp.totalAsset) - 1;

        while (low != hi) {
            uint256 mid = (low + hi + 1) / 2;
            if (calcSlope(comp, market.totalPt, int256(mid)) < 0) hi = mid - 1;
            else low = mid;
        }
        return low;
    }

    function calcSlope(MarketPreCompute memory comp, int256 totalPt, int256 ptToMarket) internal pure returns (int256) {
        int256 diffAssetPtToMarket = comp.totalAsset - ptToMarket;
        int256 sumPt = ptToMarket + totalPt;

        require(diffAssetPtToMarket > 0 && sumPt > 0, "invalid ptToMarket");

        int256 part1 = (ptToMarket * (totalPt + comp.totalAsset)).divDown(sumPt * diffAssetPtToMarket);

        int256 part2 = sumPt.divDown(diffAssetPtToMarket).ln();
        int256 part3 = PMath.IONE.divDown(comp.rateScalar);

        return comp.rateAnchor - (part1 - part2).mulDown(part3);
    }
}

library MarketApproxPtOutLib {
    using MarketMathCore for MarketState;
    using PYIndexLib for PYIndex;
    using PMath for uint256;
    using PMath for int256;
    using LogExpMath for int256;

    /**
     * @dev algorithm:
     *     - Bin search the amount of PT to swapExactOut
     *     - Calculate the amount of SY needed
     *     - Stop when the netSyIn is smaller approx exactSyIn
     *     - guess & approx is for netSyIn
     */
    function approxSwapExactSyForPt(
        MarketState memory market,
        PYIndex index,
        uint256 exactSyIn,
        uint256 blockTime,
        ApproxParams memory approx
    ) internal pure returns (uint256, /*netPtOut*/ uint256 /*netSyFee*/) {
        MarketPreCompute memory comp = market.getMarketPreCompute(index, blockTime);
        if (approx.guessOffchain == 0) {
            // no limit on min
            approx.guessMax = PMath.min(approx.guessMax, calcMaxPtOut(comp, market.totalPt));
            validateApprox(approx);
        }

        for (uint256 iter = 0; iter < approx.maxIteration; ++iter) {
            uint256 guess = nextGuess(approx, iter);

            (uint256 netSyIn, uint256 netSyFee, ) = calcSyIn(market, comp, index, guess);

            if (netSyIn <= exactSyIn) {
                if (PMath.isASmallerApproxB(netSyIn, exactSyIn, approx.eps)) {
                    return (guess, netSyFee);
                }
                approx.guessMin = guess;
            } else {
                approx.guessMax = guess - 1;
            }
        }

        revert Errors.ApproxFail();
    }

    /**
     * @dev algorithm:
     *     - Bin search the amount of PT to swapExactOut
     *     - Flashswap that amount of PT & pair with YT to redeem SY
     *     - Use the SY to repay the flashswap debt and the remaining is transferred to user
     *     - Stop when the netSyOut is greater approx the minSyOut
     *     - guess & approx is for netSyOut
     */
    function approxSwapYtForExactSy(
        MarketState memory market,
        PYIndex index,
        uint256 minSyOut,
        uint256 blockTime,
        ApproxParams memory approx
    ) internal pure returns (uint256, /*netYtIn*/ uint256, /*netSyOut*/ uint256 /*netSyFee*/) {
        MarketPreCompute memory comp = market.getMarketPreCompute(index, blockTime);
        if (approx.guessOffchain == 0) {
            // no limit on min
            approx.guessMax = PMath.min(approx.guessMax, calcMaxPtOut(comp, market.totalPt));
            validateApprox(approx);
        }

        for (uint256 iter = 0; iter < approx.maxIteration; ++iter) {
            uint256 guess = nextGuess(approx, iter);

            (uint256 netSyOwed, uint256 netSyFee, ) = calcSyIn(market, comp, index, guess);

            uint256 netAssetToRepay = index.syToAssetUp(netSyOwed);
            uint256 netSyOut = index.assetToSy(guess - netAssetToRepay);

            if (netSyOut >= minSyOut) {
                if (PMath.isAGreaterApproxB(netSyOut, minSyOut, approx.eps)) {
                    return (guess, netSyOut, netSyFee);
                }
                approx.guessMax = guess;
            } else {
                approx.guessMin = guess + 1;
            }
        }
        revert Errors.ApproxFail();
    }

    struct Args6 {
        MarketState market;
        PYIndex index;
        uint256 totalSyIn;
        uint256 netPtHolding;
        uint256 blockTime;
        ApproxParams approx;
    }

    /**
     * @dev algorithm:
     *     - Bin search the amount of PT to swapExactOut
     *     - Swap that amount of PT out
     *     - Pair the remaining PT with the SY to add liquidity
     *     - Stop when the ratio of PT / totalPt & SY / totalSy is approx
     *     - guess & approx is for netPtFromSwap
     */
    function approxSwapSyToAddLiquidity(
        MarketState memory _market,
        PYIndex _index,
        uint256 _totalSyIn,
        uint256 _netPtHolding,
        uint256 _blockTime,
        ApproxParams memory _approx
    ) internal pure returns (uint256, /*netPtFromSwap*/ uint256, /*netSySwap*/ uint256 /*netSyFee*/) {
        Args6 memory a = Args6(_market, _index, _totalSyIn, _netPtHolding, _blockTime, _approx);

        MarketPreCompute memory comp = a.market.getMarketPreCompute(a.index, a.blockTime);
        if (a.approx.guessOffchain == 0) {
            // no limit on min
            a.approx.guessMax = PMath.min(a.approx.guessMax, calcMaxPtOut(comp, a.market.totalPt));
            validateApprox(a.approx);
            require(a.market.totalLp != 0, "no existing lp");
        }

        for (uint256 iter = 0; iter < a.approx.maxIteration; ++iter) {
            uint256 guess = nextGuess(a.approx, iter);

            (uint256 netSyIn, uint256 netSyFee, uint256 netSyToReserve) = calcSyIn(a.market, comp, a.index, guess);

            if (netSyIn > a.totalSyIn) {
                a.approx.guessMax = guess - 1;
                continue;
            }

            uint256 syNumerator;
            uint256 ptNumerator;

            {
                uint256 newTotalPt = uint256(a.market.totalPt) - guess;
                uint256 netTotalSy = uint256(a.market.totalSy) + netSyIn - netSyToReserve;

                // it is desired that
                // (netPtFromSwap + netPtHolding) / newTotalPt = netSyRemaining / netTotalSy
                // which is equivalent to
                // (netPtFromSwap + netPtHolding) * netTotalSy = netSyRemaining * newTotalPt

                ptNumerator = (guess + a.netPtHolding) * netTotalSy;
                syNumerator = (a.totalSyIn - netSyIn) * newTotalPt;
            }

            if (PMath.isAApproxB(ptNumerator, syNumerator, a.approx.eps)) {
                return (guess, netSyIn, netSyFee);
            }

            if (ptNumerator <= syNumerator) {
                // needs more PT
                a.approx.guessMin = guess + 1;
            } else {
                // needs less PT
                a.approx.guessMax = guess - 1;
            }
        }
        revert Errors.ApproxFail();
    }

    /**
     * @dev algorithm:
     *     - Bin search the amount of PT to swapExactOut
     *     - Flashswap that amount of PT out
     *     - Pair all the PT with the YT to redeem SY
     *     - Use the SY to repay the flashswap debt
     *     - Stop when the amount of YT required to pair with PT is approx exactYtIn
     *     - guess & approx is for netPtFromSwap
     */
    function approxSwapExactYtForPt(
        MarketState memory market,
        PYIndex index,
        uint256 exactYtIn,
        uint256 blockTime,
        ApproxParams memory approx
    ) internal pure returns (uint256, /*netPtOut*/ uint256, /*totalPtSwapped*/ uint256 /*netSyFee*/) {
        MarketPreCompute memory comp = market.getMarketPreCompute(index, blockTime);
        if (approx.guessOffchain == 0) {
            approx.guessMin = PMath.max(approx.guessMin, exactYtIn);
            approx.guessMax = PMath.min(approx.guessMax, calcMaxPtOut(comp, market.totalPt));
            validateApprox(approx);
        }

        for (uint256 iter = 0; iter < approx.maxIteration; ++iter) {
            uint256 guess = nextGuess(approx, iter);

            (uint256 netSyOwed, uint256 netSyFee, ) = calcSyIn(market, comp, index, guess);

            uint256 netYtToPull = index.syToAssetUp(netSyOwed);

            if (netYtToPull <= exactYtIn) {
                if (PMath.isASmallerApproxB(netYtToPull, exactYtIn, approx.eps)) {
                    return (guess - netYtToPull, guess, netSyFee);
                }
                approx.guessMin = guess;
            } else {
                approx.guessMax = guess - 1;
            }
        }
        revert Errors.ApproxFail();
    }

    ////////////////////////////////////////////////////////////////////////////////

    function calcSyIn(
        MarketState memory market,
        MarketPreCompute memory comp,
        PYIndex index,
        uint256 netPtOut
    ) internal pure returns (uint256 netSyIn, uint256 netSyFee, uint256 netSyToReserve) {
        (int256 _netSyIn, int256 _netSyFee, int256 _netSyToReserve) = market.calcTrade(comp, index, int256(netPtOut));

        // all safe since totalPt and totalSy is int128
        netSyIn = uint256(-_netSyIn);
        netSyFee = uint256(_netSyFee);
        netSyToReserve = uint256(_netSyToReserve);
    }

    function calcMaxPtOut(MarketPreCompute memory comp, int256 totalPt) internal pure returns (uint256) {
        int256 logitP = (comp.feeRate - comp.rateAnchor).mulDown(comp.rateScalar).exp();
        int256 proportion = logitP.divDown(logitP + PMath.IONE);
        int256 numerator = proportion.mulDown(totalPt + comp.totalAsset);
        int256 maxPtOut = totalPt - numerator;
        // only get 99.9% of the theoretical max to accommodate some precision issues
        return (uint256(maxPtOut) * 999) / 1000;
    }

    function nextGuess(ApproxParams memory approx, uint256 iter) internal pure returns (uint256) {
        if (iter == 0 && approx.guessOffchain != 0) return approx.guessOffchain;
        if (approx.guessMin <= approx.guessMax) return (approx.guessMin + approx.guessMax) / 2;
        revert Errors.ApproxFail();
    }

    function validateApprox(ApproxParams memory approx) internal pure {
        if (approx.guessMin > approx.guessMax || approx.eps > PMath.ONE) {
            revert Errors.ApproxParamsInvalid(approx.guessMin, approx.guessMax, approx.eps);
        }
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

struct SwapData {
    SwapType swapType;
    address extRouter;
    bytes extCalldata;
    bool needScale;
}

enum SwapType {
    NONE,
    KYBERSWAP,
    ONE_INCH,
    // ETH_WETH not used in Aggregator
    ETH_WETH
}

interface IPSwapAggregator {
    function swap(address tokenIn, uint256 amountIn, SwapData calldata swapData) external payable;
}

{
  "optimizer": {
    "enabled": true,
    "runs": 1000000
  },
  "evmVersion": "paris",
  "viaIR": true,
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_ACTION_ADD_REMOVE_LIQ","type":"address"},{"internalType":"address","name":"_ACTION_SWAP_PT","type":"address"},{"internalType":"address","name":"_ACTION_SWAP_YT","type":"address"},{"internalType":"address","name":"_ACTION_MISC","type":"address"},{"internalType":"address","name":"_ACTION_CALLBACK","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"bytes4","name":"selector","type":"bytes4"}],"name":"RouterInvalidAction","type":"error"},{"anonymous":false,"inputs":[{"components":[{"internalType":"address","name":"facetAddress","type":"address"},{"internalType":"enum IDiamondCut.FacetCutAction","name":"action","type":"uint8"},{"internalType":"bytes4[]","name":"functionSelectors","type":"bytes4[]"}],"indexed":false,"internalType":"struct IDiamondCut.FacetCut[]","name":"_diamondCut","type":"tuple[]"},{"indexed":false,"internalType":"address","name":"_init","type":"address"},{"indexed":false,"internalType":"bytes","name":"_calldata","type":"bytes"}],"name":"DiamondCut","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[{"internalType":"bytes4","name":"sig","type":"bytes4"}],"name":"facetAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"facetAddresses","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"facet","type":"address"}],"name":"facetFunctionSelectors","outputs":[{"internalType":"bytes4[]","name":"res","type":"bytes4[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"facets","outputs":[{"components":[{"internalType":"address","name":"facetAddress","type":"address"},{"internalType":"bytes4[]","name":"functionSelectors","type":"bytes4[]"}],"internalType":"struct IDiamondLoupe.Facet[]","name":"facets_","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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-----Decoded View---------------
Arg [0] : _ACTION_ADD_REMOVE_LIQ (address): 0x7f51b16394255DCa3b784D1B1e7FcCE221014E39
Arg [1] : _ACTION_SWAP_PT (address): 0x851fA6b758d5b70551089b466FbAf69381b0d06e
Arg [2] : _ACTION_SWAP_YT (address): 0xFf2097020e556648269377286b1B7fcf6987eede
Arg [3] : _ACTION_MISC (address): 0x8086174bE8FC721CbF275545193a73f56FBF3384
Arg [4] : _ACTION_CALLBACK (address): 0x32aC6aB61121D20BC08989BfD200095431c2E35d

-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 0000000000000000000000007f51b16394255dca3b784d1b1e7fcce221014e39
Arg [1] : 000000000000000000000000851fa6b758d5b70551089b466fbaf69381b0d06e
Arg [2] : 000000000000000000000000ff2097020e556648269377286b1b7fcf6987eede
Arg [3] : 0000000000000000000000008086174be8fc721cbf275545193a73f56fbf3384
Arg [4] : 00000000000000000000000032ac6ab61121d20bc08989bfd200095431c2e35d