// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.23;

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

enum SwapType {
    NONE,
    KYBERSWAP,
    ONE_INCH,
    ETH_WETH
}

struct TokenInput {
    // TOKEN DATA
    address tokenIn;
    uint256 netTokenIn;
    address tokenMintSy;
    // AGGREGATOR DATA
    address pendleSwap;
    SwapData swapData;
}

struct TokenOutput {
    // TOKEN DATA
    address tokenOut;
    uint256 minTokenOut;
    address tokenRedeemSy;
    // AGGREGATOR DATA
    address pendleSwap;
    SwapData swapData;
}

enum OrderType {
    SY_FOR_PT,
    PT_FOR_SY,
    SY_FOR_YT,
    YT_FOR_SY
}

struct Order {
    uint256 salt;
    uint256 expiry;
    uint256 nonce;
    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;
}

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

struct ApproxParams {
    uint256 guessMin;
    uint256 guessMax;
    uint256 guessOffchain;
    uint256 maxIteration;
    uint256 eps;
}

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

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

    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 removeLiquiditySingleToken(
        address receiver,
        address market,
        uint256 netLpToRemove,
        TokenOutput calldata output,
        LimitOrderData calldata limit
    ) external returns (uint256 netTokenOut, uint256 netSyFee, uint256 netSyInterm);
}

interface IPendleMarket {
    function readTokens() external view returns (address sy, address pt, address yt);
}

interface IYToken {
    function PT() external view returns (address);

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

interface IPToken {
    function YT() external view returns (address);

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