// File: interfaces/IAaveOracle.sol


pragma solidity >=0.6.12;

interface IAaveOracle {
  function setAssetSources(address[] calldata assets, address[] calldata sources) external;
  function getAssetPrice(address asset) external view returns (uint256);
  function getSourceOfAsset(address asset) external view returns (address);

}

// File: contracts/lib/Sqrt.sol


pragma solidity 0.8.19;

/// @title Sqrt function
library Sqrt {
  /// @notice Babylonian method for sqrt
  /// @param x sqrt parameter
  function sqrt(uint x) internal pure returns (uint y) {
      uint z = (x + 1) / 2;
      y = x;
      while (z < y) {
          y = z;
          z = (x / z + z) / 2;
      }
  }
}

// File: contracts/lib/TickMath.sol


pragma solidity ^0.8.0;

/// @title Math library for computing sqrt prices from ticks and vice versa
/// @notice Computes sqrt price for ticks of size 1.0001, i.e. sqrt(1.0001^tick) as fixed point Q64.96 numbers. Supports
/// prices between 2**-128 and 2**128
library TickMath {
    error T();
    error R();

    /// @dev The minimum tick that may be passed to #getSqrtRatioAtTick computed from log base 1.0001 of 2**-128
    int24 internal constant MIN_TICK = -887272;
    /// @dev The maximum tick that may be passed to #getSqrtRatioAtTick computed from log base 1.0001 of 2**128
    int24 internal constant MAX_TICK = -MIN_TICK;

    /// @dev The minimum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MIN_TICK)
    uint160 internal constant MIN_SQRT_RATIO = 4295128739;
    /// @dev The maximum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MAX_TICK)
    uint160 internal constant MAX_SQRT_RATIO = 1461446703485210103287273052203988822378723970342;

    /// @notice Calculates sqrt(1.0001^tick) * 2^96
    /// @dev Throws if |tick| > max tick
    /// @param tick The input tick for the above formula
    /// @return sqrtPriceX96 A Fixed point Q64.96 number representing the sqrt of the ratio of the two assets (token1/token0)
    /// at the given tick
    function getSqrtRatioAtTick(int24 tick) internal pure returns (uint160 sqrtPriceX96) {
        unchecked {
            uint256 absTick = tick < 0 ? uint256(-int256(tick)) : uint256(int256(tick));
            if (absTick > uint256(int256(MAX_TICK))) revert T();

            uint256 ratio = absTick & 0x1 != 0
                ? 0xfffcb933bd6fad37aa2d162d1a594001
                : 0x100000000000000000000000000000000;
            if (absTick & 0x2 != 0) ratio = (ratio * 0xfff97272373d413259a46990580e213a) >> 128;
            if (absTick & 0x4 != 0) ratio = (ratio * 0xfff2e50f5f656932ef12357cf3c7fdcc) >> 128;
            if (absTick & 0x8 != 0) ratio = (ratio * 0xffe5caca7e10e4e61c3624eaa0941cd0) >> 128;
            if (absTick & 0x10 != 0) ratio = (ratio * 0xffcb9843d60f6159c9db58835c926644) >> 128;
            if (absTick & 0x20 != 0) ratio = (ratio * 0xff973b41fa98c081472e6896dfb254c0) >> 128;
            if (absTick & 0x40 != 0) ratio = (ratio * 0xff2ea16466c96a3843ec78b326b52861) >> 128;
            if (absTick & 0x80 != 0) ratio = (ratio * 0xfe5dee046a99a2a811c461f1969c3053) >> 128;
            if (absTick & 0x100 != 0) ratio = (ratio * 0xfcbe86c7900a88aedcffc83b479aa3a4) >> 128;
            if (absTick & 0x200 != 0) ratio = (ratio * 0xf987a7253ac413176f2b074cf7815e54) >> 128;
            if (absTick & 0x400 != 0) ratio = (ratio * 0xf3392b0822b70005940c7a398e4b70f3) >> 128;
            if (absTick & 0x800 != 0) ratio = (ratio * 0xe7159475a2c29b7443b29c7fa6e889d9) >> 128;
            if (absTick & 0x1000 != 0) ratio = (ratio * 0xd097f3bdfd2022b8845ad8f792aa5825) >> 128;
            if (absTick & 0x2000 != 0) ratio = (ratio * 0xa9f746462d870fdf8a65dc1f90e061e5) >> 128;
            if (absTick & 0x4000 != 0) ratio = (ratio * 0x70d869a156d2a1b890bb3df62baf32f7) >> 128;
            if (absTick & 0x8000 != 0) ratio = (ratio * 0x31be135f97d08fd981231505542fcfa6) >> 128;
            if (absTick & 0x10000 != 0) ratio = (ratio * 0x9aa508b5b7a84e1c677de54f3e99bc9) >> 128;
            if (absTick & 0x20000 != 0) ratio = (ratio * 0x5d6af8dedb81196699c329225ee604) >> 128;
            if (absTick & 0x40000 != 0) ratio = (ratio * 0x2216e584f5fa1ea926041bedfe98) >> 128;
            if (absTick & 0x80000 != 0) ratio = (ratio * 0x48a170391f7dc42444e8fa2) >> 128;

            if (tick > 0) ratio = type(uint256).max / ratio;

            // this divides by 1<<32 rounding up to go from a Q128.128 to a Q128.96.
            // we then downcast because we know the result always fits within 160 bits due to our tick input constraint
            // we round up in the division so getTickAtSqrtRatio of the output price is always consistent
            sqrtPriceX96 = uint160((ratio >> 32) + (ratio % (1 << 32) == 0 ? 0 : 1));
        }
    }

    /// @notice Calculates the greatest tick value such that getRatioAtTick(tick) <= ratio
    /// @dev Throws in case sqrtPriceX96 < MIN_SQRT_RATIO, as MIN_SQRT_RATIO is the lowest value getRatioAtTick may
    /// ever return.
    /// @param sqrtPriceX96 The sqrt ratio for which to compute the tick as a Q64.96
    /// @return tick The greatest tick for which the ratio is less than or equal to the input ratio
    function getTickAtSqrtRatio(uint160 sqrtPriceX96) internal pure returns (int24 tick) {
        unchecked {
            // second inequality must be < because the price can never reach the price at the max tick
            if (!(sqrtPriceX96 >= MIN_SQRT_RATIO && sqrtPriceX96 < MAX_SQRT_RATIO)) revert R();
            uint256 ratio = uint256(sqrtPriceX96) << 32;

            uint256 r = ratio;
            uint256 msb = 0;

            assembly {
                let f := shl(7, gt(r, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF))
                msb := or(msb, f)
                r := shr(f, r)
            }
            assembly {
                let f := shl(6, gt(r, 0xFFFFFFFFFFFFFFFF))
                msb := or(msb, f)
                r := shr(f, r)
            }
            assembly {
                let f := shl(5, gt(r, 0xFFFFFFFF))
                msb := or(msb, f)
                r := shr(f, r)
            }
            assembly {
                let f := shl(4, gt(r, 0xFFFF))
                msb := or(msb, f)
                r := shr(f, r)
            }
            assembly {
                let f := shl(3, gt(r, 0xFF))
                msb := or(msb, f)
                r := shr(f, r)
            }
            assembly {
                let f := shl(2, gt(r, 0xF))
                msb := or(msb, f)
                r := shr(f, r)
            }
            assembly {
                let f := shl(1, gt(r, 0x3))
                msb := or(msb, f)
                r := shr(f, r)
            }
            assembly {
                let f := gt(r, 0x1)
                msb := or(msb, f)
            }

            if (msb >= 128) r = ratio >> (msb - 127);
            else r = ratio << (127 - msb);

            int256 log_2 = (int256(msb) - 128) << 64;

            assembly {
                r := shr(127, mul(r, r))
                let f := shr(128, r)
                log_2 := or(log_2, shl(63, f))
                r := shr(f, r)
            }
            assembly {
                r := shr(127, mul(r, r))
                let f := shr(128, r)
                log_2 := or(log_2, shl(62, f))
                r := shr(f, r)
            }
            assembly {
                r := shr(127, mul(r, r))
                let f := shr(128, r)
                log_2 := or(log_2, shl(61, f))
                r := shr(f, r)
            }
            assembly {
                r := shr(127, mul(r, r))
                let f := shr(128, r)
                log_2 := or(log_2, shl(60, f))
                r := shr(f, r)
            }
            assembly {
                r := shr(127, mul(r, r))
                let f := shr(128, r)
                log_2 := or(log_2, shl(59, f))
                r := shr(f, r)
            }
            assembly {
                r := shr(127, mul(r, r))
                let f := shr(128, r)
                log_2 := or(log_2, shl(58, f))
                r := shr(f, r)
            }
            assembly {
                r := shr(127, mul(r, r))
                let f := shr(128, r)
                log_2 := or(log_2, shl(57, f))
                r := shr(f, r)
            }
            assembly {
                r := shr(127, mul(r, r))
                let f := shr(128, r)
                log_2 := or(log_2, shl(56, f))
                r := shr(f, r)
            }
            assembly {
                r := shr(127, mul(r, r))
                let f := shr(128, r)
                log_2 := or(log_2, shl(55, f))
                r := shr(f, r)
            }
            assembly {
                r := shr(127, mul(r, r))
                let f := shr(128, r)
                log_2 := or(log_2, shl(54, f))
                r := shr(f, r)
            }
            assembly {
                r := shr(127, mul(r, r))
                let f := shr(128, r)
                log_2 := or(log_2, shl(53, f))
                r := shr(f, r)
            }
            assembly {
                r := shr(127, mul(r, r))
                let f := shr(128, r)
                log_2 := or(log_2, shl(52, f))
                r := shr(f, r)
            }
            assembly {
                r := shr(127, mul(r, r))
                let f := shr(128, r)
                log_2 := or(log_2, shl(51, f))
                r := shr(f, r)
            }
            assembly {
                r := shr(127, mul(r, r))
                let f := shr(128, r)
                log_2 := or(log_2, shl(50, f))
            }

            int256 log_sqrt10001 = log_2 * 255738958999603826347141; // 128.128 number

            int24 tickLow = int24((log_sqrt10001 - 3402992956809132418596140100660247210) >> 128);
            int24 tickHi = int24((log_sqrt10001 + 291339464771989622907027621153398088495) >> 128);

            tick = tickLow == tickHi ? tickLow : getSqrtRatioAtTick(tickHi) <= sqrtPriceX96 ? tickHi : tickLow;
        }
    }
}
// File: contracts/lib/FixedPoint96.sol


pragma solidity >=0.4.0;

/// @title FixedPoint96
/// @notice A library for handling binary fixed point numbers, see https://en.wikipedia.org/wiki/Q_(number_format)
/// @dev Used in SqrtPriceMath.sol
library FixedPoint96 {
    uint8 internal constant RESOLUTION = 96;
    uint256 internal constant Q96 = 0x1000000000000000000000000;
}
// File: contracts/lib/FullMath.sol


pragma solidity ^0.8.0;

/// @title Contains 512-bit math functions
/// @notice Facilitates multiplication and division that can have overflow of an intermediate value without any loss of precision
/// @dev Handles "phantom overflow" i.e., allows multiplication and division where an intermediate value overflows 256 bits
library FullMath {
    /// @notice Calculates floor(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
    /// @param a The multiplicand
    /// @param b The multiplier
    /// @param denominator The divisor
    /// @return result The 256-bit result
    /// @dev Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv
    function mulDiv(
        uint256 a,
        uint256 b,
        uint256 denominator
    ) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = a * b
            // Compute the product mod 2**256 and mod 2**256 - 1
            // then use the Chinese Remainder Theorem to reconstruct
            // the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2**256 + prod0
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(a, b, not(0))
                prod0 := mul(a, b)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division
            if (prod1 == 0) {
                require(denominator > 0);
                assembly {
                    result := div(prod0, denominator)
                }
                return result;
            }

            // Make sure the result is less than 2**256.
            // Also prevents denominator == 0
            require(denominator > prod1);

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0]
            // Compute remainder using mulmod
            uint256 remainder;
            assembly {
                remainder := mulmod(a, b, denominator)
            }
            // Subtract 256 bit number from 512 bit number
            assembly {
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator
            // Compute largest power of two divisor of denominator.
            // Always >= 1.
            uint256 twos = (0 - denominator) & denominator;
            // Divide denominator by power of two
            assembly {
                denominator := div(denominator, twos)
            }

            // Divide [prod1 prod0] by the factors of two
            assembly {
                prod0 := div(prod0, twos)
            }
            // Shift in bits from prod1 into prod0. For this we need
            // to flip `twos` such that it is 2**256 / twos.
            // If twos is zero, then it becomes one
            assembly {
                twos := add(div(sub(0, twos), twos), 1)
            }
            prod0 |= prod1 * twos;

            // Invert denominator mod 2**256
            // Now that denominator is an odd number, it has an inverse
            // modulo 2**256 such that denominator * inv = 1 mod 2**256.
            // Compute the inverse by starting with a seed that is correct
            // correct for four bits. That is, denominator * inv = 1 mod 2**4
            uint256 inv = (3 * denominator) ^ 2;
            // Now use Newton-Raphson iteration to improve the precision.
            // Thanks to Hensel's lifting lemma, this also works in modular
            // arithmetic, doubling the correct bits in each step.
            inv *= 2 - denominator * inv; // inverse mod 2**8
            inv *= 2 - denominator * inv; // inverse mod 2**16
            inv *= 2 - denominator * inv; // inverse mod 2**32
            inv *= 2 - denominator * inv; // inverse mod 2**64
            inv *= 2 - denominator * inv; // inverse mod 2**128
            inv *= 2 - denominator * inv; // inverse mod 2**256

            // Because the division is now exact we can divide by multiplying
            // with the modular inverse of denominator. This will give us the
            // correct result modulo 2**256. Since the precoditions guarantee
            // that the outcome is less than 2**256, this is the final result.
            // We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inv;
            return result;
        }
    }

    /// @notice Calculates ceil(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
    /// @param a The multiplicand
    /// @param b The multiplier
    /// @param denominator The divisor
    /// @return result The 256-bit result
    function mulDivRoundingUp(
        uint256 a,
        uint256 b,
        uint256 denominator
    ) internal pure returns (uint256 result) {
        unchecked {
            result = mulDiv(a, b, denominator);
            if (mulmod(a, b, denominator) > 0) {
                require(result < type(uint256).max);
                result++;
            }
        }
    }
}
// File: contracts/lib/LiquidityAmounts.sol


pragma solidity >=0.5.0;



/// @title Liquidity amount functions
/// @notice Provides functions for computing liquidity amounts from token amounts and prices
library LiquidityAmounts {
    function toUint128(uint256 x) private pure returns (uint128 y) {
        require((y = uint128(x)) == x);
    }

    /// @notice Computes the amount of liquidity received for a given amount of token0 and price range
    /// @dev Calculates amount0 * (sqrt(upper) * sqrt(lower)) / (sqrt(upper) - sqrt(lower)).
    /// @param sqrtRatioAX96 A sqrt price
    /// @param sqrtRatioBX96 Another sqrt price
    /// @param amount0 The amount0 being sent in
    /// @return liquidity The amount of returned liquidity
    function getLiquidityForAmount0(
        uint160 sqrtRatioAX96,
        uint160 sqrtRatioBX96,
        uint256 amount0
    ) internal pure returns (uint128 liquidity) {
        if (sqrtRatioAX96 > sqrtRatioBX96)
            (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96);
        uint256 intermediate =
            FullMath.mulDiv(sqrtRatioAX96, sqrtRatioBX96, FixedPoint96.Q96);
        return
            toUint128(
                FullMath.mulDiv(
                    amount0,
                    intermediate,
                    sqrtRatioBX96 - sqrtRatioAX96
                )
            );
    }

    /// @notice Computes the amount of liquidity received for a given amount of token1 and price range
    /// @dev Calculates amount1 / (sqrt(upper) - sqrt(lower)).
    /// @param sqrtRatioAX96 A sqrt price
    /// @param sqrtRatioBX96 Another sqrt price
    /// @param amount1 The amount1 being sent in
    /// @return liquidity The amount of returned liquidity
    function getLiquidityForAmount1(
        uint160 sqrtRatioAX96,
        uint160 sqrtRatioBX96,
        uint256 amount1
    ) internal pure returns (uint128 liquidity) {
        if (sqrtRatioAX96 > sqrtRatioBX96)
            (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96);
        return
            toUint128(
                FullMath.mulDiv(
                    amount1,
                    FixedPoint96.Q96,
                    sqrtRatioBX96 - sqrtRatioAX96
                )
            );
    }

    /// @notice Computes the maximum amount of liquidity received for a given amount of token0, token1, the current
    /// pool prices and the prices at the tick boundaries
    function getLiquidityForAmounts(
        uint160 sqrtRatioX96,
        uint160 sqrtRatioAX96,
        uint160 sqrtRatioBX96,
        uint256 amount0,
        uint256 amount1
    ) internal pure returns (uint128 liquidity) {
        if (sqrtRatioAX96 > sqrtRatioBX96)
            (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96);

        if (sqrtRatioX96 < sqrtRatioAX96) {
            liquidity = getLiquidityForAmount0(
                sqrtRatioAX96,
                sqrtRatioBX96,
                amount0
            );
        } else if (sqrtRatioX96 < sqrtRatioBX96) {
            uint128 liquidity0 =
                getLiquidityForAmount0(sqrtRatioX96, sqrtRatioBX96, amount0);
            uint128 liquidity1 =
                getLiquidityForAmount1(sqrtRatioAX96, sqrtRatioX96, amount1);

            liquidity = liquidity0 < liquidity1 ? liquidity0 : liquidity1;
        } else {
            liquidity = getLiquidityForAmount1(
                sqrtRatioAX96,
                sqrtRatioBX96,
                amount1
            );
        }
    }

    /// @notice Computes the amount of token0 for a given amount of liquidity and a price range
    /// @param sqrtRatioAX96 A sqrt price
    /// @param sqrtRatioBX96 Another sqrt price
    /// @param liquidity The liquidity being valued
    /// @return amount0 The amount0
    function getAmount0ForLiquidity(
        uint160 sqrtRatioAX96,
        uint160 sqrtRatioBX96,
        uint128 liquidity
    ) internal pure returns (uint256 amount0) {
        if (sqrtRatioAX96 > sqrtRatioBX96)
            (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96);

        return
            FullMath.mulDiv(
                uint256(liquidity) << FixedPoint96.RESOLUTION,
                sqrtRatioBX96 - sqrtRatioAX96,
                sqrtRatioBX96
            ) / sqrtRatioAX96;
    }

    /// @notice Computes the amount of token1 for a given amount of liquidity and a price range
    /// @param sqrtRatioAX96 A sqrt price
    /// @param sqrtRatioBX96 Another sqrt price
    /// @param liquidity The liquidity being valued
    /// @return amount1 The amount1
    function getAmount1ForLiquidity(
        uint160 sqrtRatioAX96,
        uint160 sqrtRatioBX96,
        uint128 liquidity
    ) internal pure returns (uint256 amount1) {
        if (sqrtRatioAX96 > sqrtRatioBX96)
            (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96);

        return
            FullMath.mulDiv(
                liquidity,
                sqrtRatioBX96 - sqrtRatioAX96,
                FixedPoint96.Q96
            );
    }

    /// @notice Computes the token0 and token1 value for a given amount of liquidity, the current
    /// pool prices and the prices at the tick boundaries
    function getAmountsForLiquidity(
        uint160 sqrtRatioX96,
        uint160 sqrtRatioAX96,
        uint160 sqrtRatioBX96,
        uint128 liquidity
    ) internal pure returns (uint256 amount0, uint256 amount1) {
        if (sqrtRatioAX96 > sqrtRatioBX96)
            (sqrtRatioAX96, sqrtRatioBX96) = (sqrtRatioBX96, sqrtRatioAX96);

        if (sqrtRatioX96 < sqrtRatioAX96) {
            amount0 = getAmount0ForLiquidity(
                sqrtRatioAX96,
                sqrtRatioBX96,
                liquidity
            );
        } else if (sqrtRatioX96 < sqrtRatioBX96) {
            amount0 = getAmount0ForLiquidity(
                sqrtRatioX96,
                sqrtRatioBX96,
                liquidity
            );
            amount1 = getAmount1ForLiquidity(
                sqrtRatioAX96,
                sqrtRatioX96,
                liquidity
            );
        } else {
            amount1 = getAmount1ForLiquidity(
                sqrtRatioAX96,
                sqrtRatioBX96,
                liquidity
            );
        }
    }
}

// File: contracts/openzeppelin-solidity/contracts/security/ReentrancyGuard.sol


// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// File: contracts/openzeppelin-solidity/contracts/utils/Strings.sol


// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

// File: interfaces/IUniswapV3Pool.sol


pragma solidity >=0.5.0;

/// @title The interface for the Uniswap V3 Factory
/// @notice The Uniswap V3 Factory facilitates creation of Uniswap V3 pools and control over the protocol fees
interface IUniswapV3Pool{

  function slot0()
    external
    view
    returns (
      uint160 sqrtPriceX96,
      int24 tick,
      uint16 observationIndex,
      uint16 observationCardinality,
      uint16 observationCardinalityNext,
      uint8 feeProtocol,
      bool unlocked
    );
    
    function swap(
      address recipient,
      bool zeroForOne,
      int256 amountSpecified,
      uint160 sqrtPriceLimitX96,
      bytes calldata data
    ) external returns (int256 amount0, int256 amount1);
}

// File: interfaces/IUniswapV3Factory.sol


pragma solidity >=0.5.0;

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

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

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

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

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

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

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

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

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

// File: interfaces/IPeripheryImmutableState.sol


pragma solidity >=0.5.0;

/// @title Immutable state
/// @notice Functions that return immutable state of the router
interface IPeripheryImmutableState {
    /// @return Returns the address of the Uniswap V3 factory
    function factory() external view returns (address);

    /// @return Returns the address of WETH9
    function WETH9() external view returns (address);
}

// File: interfaces/IPeripheryPayments.sol


pragma solidity >=0.7.5;

/// @title Periphery Payments
/// @notice Functions to ease deposits and withdrawals of ETH
interface IPeripheryPayments {
    /// @notice Unwraps the contract's WETH9 balance and sends it to recipient as ETH.
    /// @dev The amountMinimum parameter prevents malicious contracts from stealing WETH9 from users.
    /// @param amountMinimum The minimum amount of WETH9 to unwrap
    /// @param recipient The address receiving ETH
    function unwrapWETH9(uint256 amountMinimum, address recipient) external payable;

    /// @notice Refunds any ETH balance held by this contract to the `msg.sender`
    /// @dev Useful for bundling with mint or increase liquidity that uses ether, or exact output swaps
    /// that use ether for the input amount
    function refundETH() external payable;

    /// @notice Transfers the full amount of a token held by this contract to recipient
    /// @dev The amountMinimum parameter prevents malicious contracts from stealing the token from users
    /// @param token The contract address of the token which will be transferred to `recipient`
    /// @param amountMinimum The minimum amount of token required for a transfer
    /// @param recipient The destination address of the token
    function sweepToken(
        address token,
        uint256 amountMinimum,
        address recipient
    ) external payable;
}

// File: interfaces/IPoolInitializer.sol


pragma solidity >=0.7.5;
pragma abicoder v2;

/// @title Creates and initializes V3 Pools
/// @notice Provides a method for creating and initializing a pool, if necessary, for bundling with other methods that
/// require the pool to exist.
interface IPoolInitializer {
    /// @notice Creates a new pool if it does not exist, then initializes if not initialized
    /// @dev This method can be bundled with others via IMulticall for the first action (e.g. mint) performed against a pool
    /// @param token0 The contract address of token0 of the pool
    /// @param token1 The contract address of token1 of the pool
    /// @param fee The fee amount of the v3 pool for the specified token pair
    /// @param sqrtPriceX96 The initial square root price of the pool as a Q64.96 value
    /// @return pool Returns the pool address based on the pair of tokens and fee, will return the newly created pool address if necessary
    function createAndInitializePoolIfNecessary(
        address token0,
        address token1,
        uint24 fee,
        uint160 sqrtPriceX96
    ) external payable returns (address pool);
}

// File: interfaces/PoolAddress.sol


pragma solidity >=0.5.0;

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

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

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

    /// @notice Deterministically computes the pool address given the factory and PoolKey
    /// @param factory The Uniswap V3 factory contract address
    /// @param key The PoolKey
    /// @return pool The contract address of the V3 pool
    function computeAddress(address factory, PoolKey memory key) internal pure returns (address pool) {
        require(key.token0 < key.token1);
        pool = address(
          uint160(
              uint256(
                  keccak256(
                      abi.encodePacked(
                          hex'ff',
                          factory,
                          keccak256(abi.encode(key.token0, key.token1, key.fee)),
                          POOL_INIT_CODE_HASH
                      )
                  )
              )
          )
        );
    }
}

// File: contracts/openzeppelin-solidity/contracts/utils/introspection/IERC165.sol


// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// File: contracts/openzeppelin-solidity/contracts/token/ERC721/IERC721.sol


// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;


/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;
}

// File: interfaces/IERC721Permit.sol


pragma solidity >=0.7.5;


/// @title ERC721 with permit
/// @notice Extension to ERC721 that includes a permit function for signature based approvals
interface IERC721Permit is IERC721 {
    /// @notice The permit typehash used in the permit signature
    /// @return The typehash for the permit
    function PERMIT_TYPEHASH() external pure returns (bytes32);

    /// @notice The domain separator used in the permit signature
    /// @return The domain seperator used in encoding of permit signature
    function DOMAIN_SEPARATOR() external view returns (bytes32);

    /// @notice Approve of a specific token ID for spending by spender via signature
    /// @param spender The account that is being approved
    /// @param tokenId The ID of the token that is being approved for spending
    /// @param deadline The deadline timestamp by which the call must be mined for the approve to work
    /// @param v Must produce valid secp256k1 signature from the holder along with `r` and `s`
    /// @param r Must produce valid secp256k1 signature from the holder along with `v` and `s`
    /// @param s Must produce valid secp256k1 signature from the holder along with `r` and `v`
    function permit(
        address spender,
        uint256 tokenId,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external payable;
}

// File: contracts/openzeppelin-solidity/contracts/token/ERC721/extensions/IERC721Enumerable.sol


// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Enumerable.sol)

pragma solidity ^0.8.0;


/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

// File: contracts/openzeppelin-solidity/contracts/interfaces/IERC721Enumerable.sol


// OpenZeppelin Contracts v4.4.1 (interfaces/IERC721Enumerable.sol)

pragma solidity ^0.8.0;


// File: contracts/openzeppelin-solidity/contracts/token/ERC721/extensions/IERC721Metadata.sol


// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)

pragma solidity ^0.8.0;


/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {
    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

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

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);
}

// File: contracts/openzeppelin-solidity/contracts/interfaces/IERC721Metadata.sol


// OpenZeppelin Contracts v4.4.1 (interfaces/IERC721Metadata.sol)

pragma solidity ^0.8.0;


// File: interfaces/INonfungiblePositionManager.sol


pragma solidity >=0.7.5;



/// @title Non-fungible token for positions
/// @notice Wraps Uniswap V3 positions in a non-fungible token interface which allows for them to be transferred
/// and authorized.
interface INonfungiblePositionManager is
    IPoolInitializer,
    IPeripheryPayments,
    IPeripheryImmutableState,
    IERC721Metadata,
    IERC721Enumerable,
    IERC721Permit
{
    /// @notice Emitted when liquidity is increased for a position NFT
    /// @dev Also emitted when a token is minted
    /// @param tokenId The ID of the token for which liquidity was increased
    /// @param liquidity The amount by which liquidity for the NFT position was increased
    /// @param amount0 The amount of token0 that was paid for the increase in liquidity
    /// @param amount1 The amount of token1 that was paid for the increase in liquidity
    event IncreaseLiquidity(uint256 indexed tokenId, uint128 liquidity, uint256 amount0, uint256 amount1);
    /// @notice Emitted when liquidity is decreased for a position NFT
    /// @param tokenId The ID of the token for which liquidity was decreased
    /// @param liquidity The amount by which liquidity for the NFT position was decreased
    /// @param amount0 The amount of token0 that was accounted for the decrease in liquidity
    /// @param amount1 The amount of token1 that was accounted for the decrease in liquidity
    event DecreaseLiquidity(uint256 indexed tokenId, uint128 liquidity, uint256 amount0, uint256 amount1);
    /// @notice Emitted when tokens are collected for a position NFT
    /// @dev The amounts reported may not be exactly equivalent to the amounts transferred, due to rounding behavior
    /// @param tokenId The ID of the token for which underlying tokens were collected
    /// @param recipient The address of the account that received the collected tokens
    /// @param amount0 The amount of token0 owed to the position that was collected
    /// @param amount1 The amount of token1 owed to the position that was collected
    event Collect(uint256 indexed tokenId, address recipient, uint256 amount0, uint256 amount1);

    /// @notice Returns the position information associated with a given token ID.
    /// @dev Throws if the token ID is not valid.
    /// @param tokenId The ID of the token that represents the position
    /// @return nonce The nonce for permits
    /// @return operator The address that is approved for spending
    /// @return token0 The address of the token0 for a specific pool
    /// @return token1 The address of the token1 for a specific pool
    /// @return fee The fee associated with the pool
    /// @return tickLower The lower end of the tick range for the position
    /// @return tickUpper The higher end of the tick range for the position
    /// @return liquidity The liquidity of the position
    /// @return feeGrowthInside0LastX128 The fee growth of token0 as of the last action on the individual position
    /// @return feeGrowthInside1LastX128 The fee growth of token1 as of the last action on the individual position
    /// @return tokensOwed0 The uncollected amount of token0 owed to the position as of the last computation
    /// @return tokensOwed1 The uncollected amount of token1 owed to the position as of the last computation
    function positions(uint256 tokenId)
        external
        view
        returns (
            uint96 nonce,
            address operator,
            address token0,
            address token1,
            uint24 fee,
            int24 tickLower,
            int24 tickUpper,
            uint128 liquidity,
            uint256 feeGrowthInside0LastX128,
            uint256 feeGrowthInside1LastX128,
            uint128 tokensOwed0,
            uint128 tokensOwed1
        );

    struct MintParams {
        address token0;
        address token1;
        uint24 fee;
        int24 tickLower;
        int24 tickUpper;
        uint256 amount0Desired;
        uint256 amount1Desired;
        uint256 amount0Min;
        uint256 amount1Min;
        address recipient;
        uint256 deadline;
    }

    /// @notice Creates a new position wrapped in a NFT
    /// @dev Call this when the pool does exist and is initialized. Note that if the pool is created but not initialized
    /// a method does not exist, i.e. the pool is assumed to be initialized.
    /// @param params The params necessary to mint a position, encoded as `MintParams` in calldata
    /// @return tokenId The ID of the token that represents the minted position
    /// @return liquidity The amount of liquidity for this position
    /// @return amount0 The amount of token0
    /// @return amount1 The amount of token1
    function mint(MintParams calldata params)
        external
        payable
        returns (
            uint256 tokenId,
            uint128 liquidity,
            uint256 amount0,
            uint256 amount1
        );

    struct IncreaseLiquidityParams {
        uint256 tokenId;
        uint256 amount0Desired;
        uint256 amount1Desired;
        uint256 amount0Min;
        uint256 amount1Min;
        uint256 deadline;
    }

    /// @notice Increases the amount of liquidity in a position, with tokens paid by the `msg.sender`
    /// @param params tokenId The ID of the token for which liquidity is being increased,
    /// amount0Desired The desired amount of token0 to be spent,
    /// amount1Desired The desired amount of token1 to be spent,
    /// amount0Min The minimum amount of token0 to spend, which serves as a slippage check,
    /// amount1Min The minimum amount of token1 to spend, which serves as a slippage check,
    /// deadline The time by which the transaction must be included to effect the change
    /// @return liquidity The new liquidity amount as a result of the increase
    /// @return amount0 The amount of token0 to acheive resulting liquidity
    /// @return amount1 The amount of token1 to acheive resulting liquidity
    function increaseLiquidity(IncreaseLiquidityParams calldata params)
        external
        payable
        returns (
            uint128 liquidity,
            uint256 amount0,
            uint256 amount1
        );

    struct DecreaseLiquidityParams {
        uint256 tokenId;
        uint128 liquidity;
        uint256 amount0Min;
        uint256 amount1Min;
        uint256 deadline;
    }

    /// @notice Decreases the amount of liquidity in a position and accounts it to the position
    /// @param params tokenId The ID of the token for which liquidity is being decreased,
    /// amount The amount by which liquidity will be decreased,
    /// amount0Min The minimum amount of token0 that should be accounted for the burned liquidity,
    /// amount1Min The minimum amount of token1 that should be accounted for the burned liquidity,
    /// deadline The time by which the transaction must be included to effect the change
    /// @return amount0 The amount of token0 accounted to the position's tokens owed
    /// @return amount1 The amount of token1 accounted to the position's tokens owed
    function decreaseLiquidity(DecreaseLiquidityParams calldata params)
        external
        payable
        returns (uint256 amount0, uint256 amount1);

    struct CollectParams {
        uint256 tokenId;
        address recipient;
        uint128 amount0Max;
        uint128 amount1Max;
    }

    /// @notice Collects up to a maximum amount of fees owed to a specific position to the recipient
    /// @param params tokenId The ID of the NFT for which tokens are being collected,
    /// recipient The account that should receive the tokens,
    /// amount0Max The maximum amount of token0 to collect,
    /// amount1Max The maximum amount of token1 to collect
    /// @return amount0 The amount of fees collected in token0
    /// @return amount1 The amount of fees collected in token1
    function collect(CollectParams calldata params) external payable returns (uint256 amount0, uint256 amount1);

    /// @notice Burns a token ID, which deletes it from the NFT contract. The token must have 0 liquidity and all tokens
    /// must be collected first.
    /// @param tokenId The ID of the token that is being burned
    function burn(uint256 tokenId) external payable;
}

// File: interfaces/IUniswapV2Factory.sol

pragma solidity >=0.6.2;

interface IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    function feeTo() external view returns (address);
    function feeToSetter() external view returns (address);

    function getPair(address tokenA, address tokenB) external view returns (address pair);
    function allPairs(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);

    function createPair(address tokenA, address tokenB) external returns (address pair);

    function setFeeTo(address) external;
    function setFeeToSetter(address) external;
}

// File: interfaces/IUniswapV2Pair.sol

pragma solidity >=0.5.0;

interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;

    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function price0CumulativeLast() external view returns (uint);
    function price1CumulativeLast() external view returns (uint);
    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);
    function burn(address to) external returns (uint amount0, uint amount1);
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
    function skim(address to) external;
    function sync() external;

    function initialize(address, address) external;
}

// File: interfaces/IUniswapV2Router01.sol



pragma solidity >=0.6.2;

interface IUniswapV2Router01 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    )
        external
        returns (
            uint256 amountA,
            uint256 amountB,
            uint256 liquidity
        );

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        );

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETH(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountToken, uint256 amountETH);

    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETHWithPermit(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountToken, uint256 amountETH);

    function swapExactTokensForTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapTokensForExactTokens(
        uint256 amountOut,
        uint256 amountInMax,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactETHForTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function swapTokensForExactETH(
        uint256 amountOut,
        uint256 amountInMax,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactTokensForETH(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapETHForExactTokens(
        uint256 amountOut,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function quote(
        uint256 amountA,
        uint256 reserveA,
        uint256 reserveB
    ) external pure returns (uint256 amountB);

    function getAmountOut(
        uint256 amountIn,
        uint256 reserveIn,
        uint256 reserveOut
    ) external pure returns (uint256 amountOut);

    function getAmountIn(
        uint256 amountOut,
        uint256 reserveIn,
        uint256 reserveOut
    ) external pure returns (uint256 amountIn);

    function getAmountsOut(uint256 amountIn, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);

    function getAmountsIn(uint256 amountOut, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);
}

// File: interfaces/IPriceOracle.sol


pragma solidity ^0.8.0;

/************
@title IPriceOracle interface
@notice Interface for the Aave price oracle.*/
interface IPriceOracle {
  /***********
    @dev returns the asset price in ETH
     */
  function getAssetPrice(address asset) external view returns (uint256);

  /***********
    @dev sets the asset price, in wei
     */
  function setAssetPrice(address asset, uint256 price) external;
}

// File: interfaces/DataTypes.sol


pragma solidity >=0.6.12;

library DataTypes {
  // refer to the whitepaper, section 1.1 basic concepts for a formal description of these properties.
  struct ReserveData {
    //stores the reserve configuration
    ReserveConfigurationMap configuration;
    //the liquidity index. Expressed in ray
    uint128 liquidityIndex;
    //variable borrow index. Expressed in ray
    uint128 variableBorrowIndex;
    //the current supply rate. Expressed in ray
    uint128 currentLiquidityRate;
    //the current variable borrow rate. Expressed in ray
    uint128 currentVariableBorrowRate;
    //the current stable borrow rate. Expressed in ray
    uint128 currentStableBorrowRate;
    uint40 lastUpdateTimestamp;
    //tokens addresses
    address aTokenAddress;
    address stableDebtTokenAddress;
    address variableDebtTokenAddress;
    //address of the interest rate strategy
    address interestRateStrategyAddress;
    //the id of the reserve. Represents the position in the list of the active reserves
    uint8 id;
  }

  struct ReserveConfigurationMap {
    //bit 0-15: LTV
    //bit 16-31: Liq. threshold
    //bit 32-47: Liq. bonus
    //bit 48-55: Decimals
    //bit 56: Reserve is active
    //bit 57: reserve is frozen
    //bit 58: borrowing is enabled
    //bit 59: stable rate borrowing enabled
    //bit 60-63: reserved
    //bit 64-79: reserve factor
    uint256 data;
  }

  struct UserConfigurationMap {
    uint256 data;
  }

  enum InterestRateMode {NONE, STABLE, VARIABLE}
}

// File: interfaces/ILendingPoolAddressesProvider.sol


pragma solidity >=0.6.12;

/**
 * @title LendingPoolAddressesProvider contract
 * @dev Main registry of addresses part of or connected to the protocol, including permissioned roles
 * - Acting also as factory of proxies and admin of those, so with right to change its implementations
 * - Owned by the Aave Governance
 * @author Aave
 **/
interface ILendingPoolAddressesProvider {
  event MarketIdSet(string newMarketId);
  event LendingPoolUpdated(address indexed newAddress);
  event ConfigurationAdminUpdated(address indexed newAddress);
  event EmergencyAdminUpdated(address indexed newAddress);
  event LendingPoolConfiguratorUpdated(address indexed newAddress);
  event LendingPoolCollateralManagerUpdated(address indexed newAddress);
  event PriceOracleUpdated(address indexed newAddress);
  event LendingRateOracleUpdated(address indexed newAddress);
  event ProxyCreated(bytes32 id, address indexed newAddress);
  event AddressSet(bytes32 id, address indexed newAddress, bool hasProxy);

  function getMarketId() external view returns (string memory);
  function setMarketId(string calldata marketId) external;
  function setAddress(bytes32 id, address newAddress) external;
  function setAddressAsProxy(bytes32 id, address impl) external;
  function getAddress(bytes32 id) external view returns (address);
  function getLendingPool() external view returns (address);
  function setLendingPoolImpl(address pool) external;
  function getLendingPoolConfigurator() external view returns (address);
  function setLendingPoolConfiguratorImpl(address configurator) external;
  function getLendingPoolCollateralManager() external view returns (address);
  function setLendingPoolCollateralManager(address manager) external;
  function getPoolAdmin() external view returns (address);
  function setPoolAdmin(address admin) external;
  function getEmergencyAdmin() external view returns (address);
  function setEmergencyAdmin(address admin) external;
  function getPriceOracle() external view returns (address);
  function setPriceOracle(address priceOracle) external;
  function getLendingRateOracle() external view returns (address);
  function setLendingRateOracle(address lendingRateOracle) external;
}

// File: interfaces/IAaveLendingPoolV2.sol


pragma solidity >=0.6.12;
pragma experimental ABIEncoderV2;



interface ILendingPool {
  /**
   * @dev Emitted on deposit()
   * @param reserve The address of the underlying asset of the reserve
   * @param user The address initiating the deposit
   * @param onBehalfOf The beneficiary of the deposit, receiving the aTokens
   * @param amount The amount deposited
   * @param referral The referral code used
   **/
  event Deposit(
    address indexed reserve,
    address user,
    address indexed onBehalfOf,
    uint256 amount,
    uint16 indexed referral
  );

  /**
   * @dev Emitted on withdraw()
   * @param reserve The address of the underlyng asset being withdrawn
   * @param user The address initiating the withdrawal, owner of aTokens
   * @param to Address that will receive the underlying
   * @param amount The amount to be withdrawn
   **/
  event Withdraw(address indexed reserve, address indexed user, address indexed to, uint256 amount);

  /**
   * @dev Emitted on borrow() and flashLoan() when debt needs to be opened
   * @param reserve The address of the underlying asset being borrowed
   * @param user The address of the user initiating the borrow(), receiving the funds on borrow() or just
   * initiator of the transaction on flashLoan()
   * @param onBehalfOf The address that will be getting the debt
   * @param amount The amount borrowed out
   * @param borrowRateMode The rate mode: 1 for Stable, 2 for Variable
   * @param borrowRate The numeric rate at which the user has borrowed
   * @param referral The referral code used
   **/
  event Borrow(
    address indexed reserve,
    address user,
    address indexed onBehalfOf,
    uint256 amount,
    uint256 borrowRateMode,
    uint256 borrowRate,
    uint16 indexed referral
  );

  /**
   * @dev Emitted on repay()
   * @param reserve The address of the underlying asset of the reserve
   * @param user The beneficiary of the repayment, getting his debt reduced
   * @param repayer The address of the user initiating the repay(), providing the funds
   * @param amount The amount repaid
   **/
  event Repay(
    address indexed reserve,
    address indexed user,
    address indexed repayer,
    uint256 amount
  );

  /**
   * @dev Emitted on swapBorrowRateMode()
   * @param reserve The address of the underlying asset of the reserve
   * @param user The address of the user swapping his rate mode
   * @param rateMode The rate mode that the user wants to swap to
   **/
  event Swap(address indexed reserve, address indexed user, uint256 rateMode);

  /**
   * @dev Emitted on setUserUseReserveAsCollateral()
   * @param reserve The address of the underlying asset of the reserve
   * @param user The address of the user enabling the usage as collateral
   **/
  event ReserveUsedAsCollateralEnabled(address indexed reserve, address indexed user);

  /**
   * @dev Emitted on setUserUseReserveAsCollateral()
   * @param reserve The address of the underlying asset of the reserve
   * @param user The address of the user enabling the usage as collateral
   **/
  event ReserveUsedAsCollateralDisabled(address indexed reserve, address indexed user);

  /**
   * @dev Emitted on rebalanceStableBorrowRate()
   * @param reserve The address of the underlying asset of the reserve
   * @param user The address of the user for which the rebalance has been executed
   **/
  event RebalanceStableBorrowRate(address indexed reserve, address indexed user);

  /**
   * @dev Emitted on flashLoan()
   * @param target The address of the flash loan receiver contract
   * @param initiator The address initiating the flash loan
   * @param asset The address of the asset being flash borrowed
   * @param amount The amount flash borrowed
   * @param premium The fee flash borrowed
   * @param referralCode The referral code used
   **/
  event FlashLoan(
    address indexed target,
    address indexed initiator,
    address indexed asset,
    uint256 amount,
    uint256 premium,
    uint16 referralCode
  );

  /**
   * @dev Emitted when the pause is triggered.
   */
  event Paused();

  /**
   * @dev Emitted when the pause is lifted.
   */
  event Unpaused();

  /**
   * @dev Emitted when a borrower is liquidated. This event is emitted by the LendingPool via
   * LendingPoolCollateral manager using a DELEGATECALL
   * This allows to have the events in the generated ABI for LendingPool.
   * @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation
   * @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation
   * @param user The address of the borrower getting liquidated
   * @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover
   * @param liquidatedCollateralAmount The amount of collateral received by the liiquidator
   * @param liquidator The address of the liquidator
   * @param receiveAToken `true` if the liquidators wants to receive the collateral aTokens, `false` if he wants
   * to receive the underlying collateral asset directly
   **/
  event LiquidationCall(
    address indexed collateralAsset,
    address indexed debtAsset,
    address indexed user,
    uint256 debtToCover,
    uint256 liquidatedCollateralAmount,
    address liquidator,
    bool receiveAToken
  );

  /**
   * @dev Emitted when the state of a reserve is updated. NOTE: This event is actually declared
   * in the ReserveLogic library and emitted in the updateInterestRates() function. Since the function is internal,
   * the event will actually be fired by the LendingPool contract. The event is therefore replicated here so it
   * gets added to the LendingPool ABI
   * @param reserve The address of the underlying asset of the reserve
   * @param liquidityRate The new liquidity rate
   * @param stableBorrowRate The new stable borrow rate
   * @param variableBorrowRate The new variable borrow rate
   * @param liquidityIndex The new liquidity index
   * @param variableBorrowIndex The new variable borrow index
   **/
  event ReserveDataUpdated(
    address indexed reserve,
    uint256 liquidityRate,
    uint256 stableBorrowRate,
    uint256 variableBorrowRate,
    uint256 liquidityIndex,
    uint256 variableBorrowIndex
  );

  /**
   * @dev Deposits an `amount` of underlying asset into the reserve, receiving in return overlying aTokens.
   * - E.g. User deposits 100 USDC and gets in return 100 aUSDC
   * @param asset The address of the underlying asset to deposit
   * @param amount The amount to be deposited
   * @param onBehalfOf The address that will receive the aTokens, same as msg.sender if the user
   *   wants to receive them on his own wallet, or a different address if the beneficiary of aTokens
   *   is a different wallet
   * @param referralCode Code used to register the integrator originating the operation, for potential rewards.
   *   0 if the action is executed directly by the user, without any middle-man
   **/
  function deposit(
    address asset,
    uint256 amount,
    address onBehalfOf,
    uint16 referralCode
  ) external;

  /**
   * @dev Withdraws an `amount` of underlying asset from the reserve, burning the equivalent aTokens owned
   * E.g. User has 100 aUSDC, calls withdraw() and receives 100 USDC, burning the 100 aUSDC
   * @param asset The address of the underlying asset to withdraw
   * @param amount The underlying amount to be withdrawn
   *   - Send the value type(uint256).max in order to withdraw the whole aToken balance
   * @param to Address that will receive the underlying, same as msg.sender if the user
   *   wants to receive it on his own wallet, or a different address if the beneficiary is a
   *   different wallet
   * @return The final amount withdrawn
   **/
  function withdraw(
    address asset,
    uint256 amount,
    address to
  ) external returns (uint256);

  /**
   * @dev Allows users to borrow a specific `amount` of the reserve underlying asset, provided that the borrower
   * already deposited enough collateral, or he was given enough allowance by a credit delegator on the
   * corresponding debt token (StableDebtToken or VariableDebtToken)
   * - E.g. User borrows 100 USDC passing as `onBehalfOf` his own address, receiving the 100 USDC in his wallet
   *   and 100 stable/variable debt tokens, depending on the `interestRateMode`
   * @param asset The address of the underlying asset to borrow
   * @param amount The amount to be borrowed
   * @param interestRateMode The interest rate mode at which the user wants to borrow: 1 for Stable, 2 for Variable
   * @param referralCode Code used to register the integrator originating the operation, for potential rewards.
   *   0 if the action is executed directly by the user, without any middle-man
   * @param onBehalfOf Address of the user who will receive the debt. Should be the address of the borrower itself
   * calling the function if he wants to borrow against his own collateral, or the address of the credit delegator
   * if he has been given credit delegation allowance
   **/
  function borrow(
    address asset,
    uint256 amount,
    uint256 interestRateMode,
    uint16 referralCode,
    address onBehalfOf
  ) external;

  /**
   * @notice Repays a borrowed `amount` on a specific reserve, burning the equivalent debt tokens owned
   * - E.g. User repays 100 USDC, burning 100 variable/stable debt tokens of the `onBehalfOf` address
   * @param asset The address of the borrowed underlying asset previously borrowed
   * @param amount The amount to repay
   * - Send the value type(uint256).max in order to repay the whole debt for `asset` on the specific `debtMode`
   * @param rateMode The interest rate mode at of the debt the user wants to repay: 1 for Stable, 2 for Variable
   * @param onBehalfOf Address of the user who will get his debt reduced/removed. Should be the address of the
   * user calling the function if he wants to reduce/remove his own debt, or the address of any other
   * other borrower whose debt should be removed
   * @return The final amount repaid
   **/
  function repay(
    address asset,
    uint256 amount,
    uint256 rateMode,
    address onBehalfOf
  ) external returns (uint256);

  /**
   * @dev Allows a borrower to swap his debt between stable and variable mode, or viceversa
   * @param asset The address of the underlying asset borrowed
   * @param rateMode The rate mode that the user wants to swap to
   **/
  function swapBorrowRateMode(address asset, uint256 rateMode) external;

  /**
   * @dev Rebalances the stable interest rate of a user to the current stable rate defined on the reserve.
   * - Users can be rebalanced if the following conditions are satisfied:
   *     1. Usage ratio is above 95%
   *     2. the current deposit APY is below REBALANCE_UP_THRESHOLD * maxVariableBorrowRate, which means that too much has been
   *        borrowed at a stable rate and depositors are not earning enough
   * @param asset The address of the underlying asset borrowed
   * @param user The address of the user to be rebalanced
   **/
  function rebalanceStableBorrowRate(address asset, address user) external;

  /**
   * @dev Allows depositors to enable/disable a specific deposited asset as collateral
   * @param asset The address of the underlying asset deposited
   * @param useAsCollateral `true` if the user wants to use the deposit as collateral, `false` otherwise
   **/
  function setUserUseReserveAsCollateral(address asset, bool useAsCollateral) external;

  /**
   * @dev Function to liquidate a non-healthy position collateral-wise, with Health Factor below 1
   * - The caller (liquidator) covers `debtToCover` amount of debt of the user getting liquidated, and receives
   *   a proportionally amount of the `collateralAsset` plus a bonus to cover market risk
   * @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation
   * @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation
   * @param user The address of the borrower getting liquidated
   * @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover
   * @param receiveAToken `true` if the liquidators wants to receive the collateral aTokens, `false` if he wants
   * to receive the underlying collateral asset directly
   **/
  function liquidationCall(
    address collateralAsset,
    address debtAsset,
    address user,
    uint256 debtToCover,
    bool receiveAToken
  ) external;

  /**
   * @dev Allows smartcontracts to access the liquidity of the pool within one transaction,
   * as long as the amount taken plus a fee is returned.
   * IMPORTANT There are security concerns for developers of flashloan receiver contracts that must be kept into consideration.
   * For further details please visit https://developers.aave.com
   * @param receiverAddress The address of the contract receiving the funds, implementing the IFlashLoanReceiver interface
   * @param assets The addresses of the assets being flash-borrowed
   * @param amounts The amounts amounts being flash-borrowed
   * @param modes Types of the debt to open if the flash loan is not returned:
   *   0 -> Don't open any debt, just revert if funds can't be transferred from the receiver
   *   1 -> Open debt at stable rate for the value of the amount flash-borrowed to the `onBehalfOf` address
   *   2 -> Open debt at variable rate for the value of the amount flash-borrowed to the `onBehalfOf` address
   * @param onBehalfOf The address  that will receive the debt in the case of using on `modes` 1 or 2
   * @param params Variadic packed params to pass to the receiver as extra information
   * @param referralCode Code used to register the integrator originating the operation, for potential rewards.
   *   0 if the action is executed directly by the user, without any middle-man
   **/
  function flashLoan(
    address receiverAddress,
    address[] calldata assets,
    uint256[] calldata amounts,
    uint256[] calldata modes,
    address onBehalfOf,
    bytes calldata params,
    uint16 referralCode
  ) external;

  /**
   * @dev Returns the user account data across all the reserves
   * @param user The address of the user
   * @return totalCollateralETH the total collateral in ETH of the user
   * @return totalDebtETH the total debt in ETH of the user
   * @return availableBorrowsETH the borrowing power left of the user
   * @return currentLiquidationThreshold the liquidation threshold of the user
   * @return ltv the loan to value of the user
   * @return healthFactor the current health factor of the user
   **/
  function getUserAccountData(address user)
    external
    view
    returns (
      uint256 totalCollateralETH,
      uint256 totalDebtETH,
      uint256 availableBorrowsETH,
      uint256 currentLiquidationThreshold,
      uint256 ltv,
      uint256 healthFactor
    );

  function initReserve(
    address reserve,
    address aTokenAddress,
    address stableDebtAddress,
    address variableDebtAddress,
    address interestRateStrategyAddress
  ) external;

  function setReserveInterestRateStrategyAddress(address reserve, address rateStrategyAddress)
    external;

  function setConfiguration(address reserve, uint256 configuration) external;

  /**
   * @dev Returns the configuration of the reserve
   * @param asset The address of the underlying asset of the reserve
   * @return The configuration of the reserve
   **/
  function getConfiguration(address asset)
    external
    view
    returns (DataTypes.ReserveConfigurationMap memory);

  /**
   * @dev Returns the configuration of the user across all the reserves
   * @param user The user address
   * @return The configuration of the user
   **/
  function getUserConfiguration(address user)
    external
    view
    returns (DataTypes.UserConfigurationMap memory);

  /**
   * @dev Returns the normalized income normalized income of the reserve
   * @param asset The address of the underlying asset of the reserve
   * @return The reserve's normalized income
   */
  function getReserveNormalizedIncome(address asset) external view returns (uint256);

  /**
   * @dev Returns the normalized variable debt per unit of asset
   * @param asset The address of the underlying asset of the reserve
   * @return The reserve normalized variable debt
   */
  function getReserveNormalizedVariableDebt(address asset) external view returns (uint256);

  /**
   * @dev Returns the state and configuration of the reserve
   * @param asset The address of the underlying asset of the reserve
   * @return The state of the reserve
   **/
  function getReserveData(address asset) external view returns (DataTypes.ReserveData memory);

  function finalizeTransfer(
    address asset,
    address from,
    address to,
    uint256 amount,
    uint256 balanceFromAfter,
    uint256 balanceToBefore
  ) external;

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

  function getAddressesProvider() external view returns (ILendingPoolAddressesProvider);

  function setPause(bool val) external;

  function paused() external view returns (bool);
  
  function PMTransfer(
    address collateralAsset,
    address user,
    uint256 amount
  ) external;
  
  function PMTransferTo(
    address collateralAsset,
    address user,
    uint256 amount
  ) external;
  
  function PMAssign(
    address _pm
  ) external;
  
  function PMWithdraw(
    address asset,
    uint256 amount,
    address to
  ) external returns (uint256);
  
  function PMSet(
    address _pm,
    bool _state
  ) external;
  
  function setSoftLiquidationThreshold(
    uint256 _threshold
  ) external;
  
  function pm() external view returns (address);
  function LENDINGPOOL_REVISION() external view returns (uint);
  function disableReserveAsCollateral(address, address) external;

  function setCap(address asset, uint256 supplyCap, uint256 borrowCap) external;
  function supplyCap(address) external view returns (uint);
  function borrowCap(address) external view returns (uint);
}


// File: interfaces/IFlashLoanReceiver.sol


pragma solidity ^0.8.0;



/**
 * @title IFlashLoanReceiver interface
 * @notice Interface for the Aave fee IFlashLoanReceiver.
 * @author Aave
 * @dev implement this interface to develop a flashloan-compatible flashLoanReceiver contract
 **/
interface IFlashLoanReceiver {
  function executeOperation(
    address[] calldata assets,
    uint256[] calldata amounts,
    uint256[] calldata premiums,
    address initiator,
    bytes calldata params
  ) external returns (bool);

  function ADDRESSES_PROVIDER() external view returns (ILendingPoolAddressesProvider);

  function LENDING_POOL() external view returns (ILendingPool);
}

// File: contracts/openzeppelin-solidity/contracts/utils/Address.sol


// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// File: contracts/openzeppelin-solidity/contracts/utils/Context.sol


// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

// File: contracts/openzeppelin-solidity/contracts/access/Ownable.sol


// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;


/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

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

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

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: contracts/RoeRouter.sol


pragma solidity 0.8.19;



/**
 * Contract RoeRouter holds a list of whitelisted ROE lending pools and important parameters
 */
contract RoeRouter is Ownable {
  /// EVENTS
  event AddedPool(uint poolId, address lendingPoolAddressProvider);
  event SetDeprecated(uint poolId, bool status);
  event UpdatedTreasury(address treasury);
  event SetVaultAddress(address token0, address token1, address vault);

  /// ROE treasury
  address public treasury;

  /// List of pools
  RoePool[] public pools;
  
  /// List of GeVaults
  mapping(bytes32 => address) private _vaults;

  /// Lending pool structure
  struct RoePool {
    address lendingPoolAddressProvider;
    address token0;
    address token1;
    address ammRouter;
    bool isDeprecated;
  }
  
  
  /// @notice constructor
  constructor (address treasury_) {
    require(treasury_ != address(0x0), "Invalid address");
    treasury = treasury_;
  }
  
  
  /// @notice Return pool list length
  function getPoolsLength() public view returns (uint poolLength) {
    poolLength = pools.length;
  }
  
  
  /// @notice Deprecate a pool
  /// @param poolId pool ID
  /// @dev isDeprecated is a statement about the pool record, and does not imply anything about the pool itself
  function setDeprecated(uint poolId, bool status) public onlyOwner {
    pools[poolId].isDeprecated = status;
    emit SetDeprecated(poolId, status);
  }
  
  
  /// @notice Add a new pool parameters
  /// @param lendingPoolAddressProvider address of a ROE Aave-compatible lending pool address provider
  /// @param token0 address of the one token of the pair 
  /// @param token1 address of the second token of the pair
  /// @param ammRouter address of the AMMv2 such that the LP pair ammRouter.factory.getPair(token0, token1) is supported by the lending pool
  function addPool(
    address lendingPoolAddressProvider, 
    address token0, 
    address token1, 
    address ammRouter
  ) 
    public onlyOwner 
    returns (uint poolId)
  {
    require (
      lendingPoolAddressProvider != address(0x0) 
      && token0 != address(0x0) 
      && token1 != address(0x0) 
      && ammRouter != address(0x0), 
      "Invalid Address"
    );
    require(token0 < token1, "Invalid Order");
    pools.push(RoePool(lendingPoolAddressProvider, token0, token1, ammRouter, false));
    poolId = pools.length - 1;
    emit AddedPool(poolId, lendingPoolAddressProvider);
  }
  
  /// @notice Modify treaury address
  /// @param newTreasury New treasury address
  function setTreasury(address newTreasury) public onlyOwner {
    require(newTreasury != address(0x0), "Invalid address");
    treasury = newTreasury;
    emit UpdatedTreasury(newTreasury);
  }
  
  /// @notice Sets the vault address for a token pair
  /// @param token0 address of the one token of the pair 
  /// @param token1 address of the second token of the pair
  /// @param vault address of the vote
  /// @dev Each pair can only have one geVault at a time. 0x0 is a valid vault address, used to remove
  function setVault(address token0, address token1, address vault) public onlyOwner {
    require(token0 < token1, "Invalid Order");
    bytes32 addrHash = sha256(abi.encode(token0, token1));
    if (vault == address(0x0)) delete _vaults[addrHash];
    else _vaults[addrHash] = vault;
    emit SetVaultAddress(token0, token1, vault);
  }
  
  /// @notice Get the vault address for a token pair
  function getVault(address token0, address token1) public view returns (address vault) {
    bytes32 addrHash = sha256(abi.encode(token0, token1));
    vault = _vaults[addrHash]; 
  }
  
}
// File: contracts/openzeppelin-solidity/contracts/token/ERC20/IERC20.sol


// OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

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

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// File: contracts/openzeppelin-solidity/contracts/token/ERC20/utils/SafeERC20.sol


// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;



/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// File: contracts/openzeppelin-solidity/contracts/token/ERC20/extensions/IERC20Metadata.sol


// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;


/**
 * @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);
}

// File: contracts/openzeppelin-solidity/contracts/token/ERC20/ERC20.sol


// OpenZeppelin Contracts v4.4.1 (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;




/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }

        _transfer(sender, recipient, amount);

        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `sender` to `recipient`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);

        _afterTokenTransfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

// File: contracts/TokenisableRange.sol


pragma solidity 0.8.19;














/// @notice Tokenize a Uniswap V3 NFT position
contract TokenisableRange is ERC20("", ""), ReentrancyGuard {
  using SafeERC20 for ERC20;
  /// EVENTS
  event InitTR(address asset0, address asset1, uint128 startX10, uint128 endX10);
  event Deposit(address sender, uint trAmount);
  event Withdraw(address sender, uint trAmount);
  event ClaimFees(uint fee0, uint fee1);
  
  /// VARIABLES

  int24 public lowerTick;
  int24 public upperTick;
  uint24 public feeTier;
  
  uint256 public tokenId;
  uint256 public fee0;
  uint256 public fee1;
  
  struct ASSET {
    ERC20 token;
    uint8 decimals;
  }
  
  ASSET public TOKEN0;
  ASSET public TOKEN1;
  IAaveOracle public ORACLE;
  
  string _name;
  string _symbol;
  
  enum ProxyState { INIT_PROXY, INIT_LP, READY }
  ProxyState public status;
  address private creator;
  
  uint128 public liquidity;
  // @notice deprecated, keep to avoid beacon storage slot overwriting errors
  address public TREASURY_DEPRECATED = 0x22Cc3f665ba4C898226353B672c5123c58751692;
  uint public treasuryFee_deprecated = 20;
  
  // These are constant across chains - https://docs.uniswap.org/protocol/reference/deployments
  INonfungiblePositionManager constant public POS_MGR = INonfungiblePositionManager(0xC36442b4a4522E871399CD717aBDD847Ab11FE88); 
  IUniswapV3Factory constant public V3_FACTORY = IUniswapV3Factory(0x1F98431c8aD98523631AE4a59f267346ea31F984); 
  address constant public treasury = 0x22Cc3f665ba4C898226353B672c5123c58751692;
  uint constant public treasuryFee = 20;
  address constant roerouter = 0x061D66e7392Bb056b771c398543f56F0D9Dd5137;
  uint128 constant UINT128MAX = type(uint128).max;


  /// @notice Store range parameters
  /// @param _oracle Address of the IAaveOracle interface of the ROE lending pool
  /// @param asset0 Quote token address
  /// @param asset1 Base token address 
  /// @param startX10 Range lower price scaled by 1e10
  /// @param endX10 Range high price scaled by 1e10
  /// @param startName Name of the range lower bound 
  /// @param endName Name of the range higher bound
  /// @param isTicker Range is single tick liquidity around upperTick/startX10/startName
  function initProxy(IAaveOracle _oracle, ERC20 asset0, ERC20 asset1, uint128 startX10, uint128 endX10, string memory startName, string memory endName, bool isTicker) external {
    require(address(_oracle) != address(0x0), "Invalid oracle");
    require(status == ProxyState.INIT_PROXY, "!InitProxy");
    creator = msg.sender;
    status = ProxyState.INIT_LP;
    ORACLE = _oracle;
    
    TOKEN0.token    = asset0;
    TOKEN0.decimals = asset0.decimals();
    TOKEN1.token     = asset1;
    TOKEN1.decimals  = asset1.decimals();
    string memory quoteSymbol = asset0.symbol();
    string memory baseSymbol  = asset1.symbol();
        
    int24 _upperTick = TickMath.getTickAtSqrtRatio( uint160( 2**48 * Sqrt.sqrt( (2 ** 96 * (10 ** TOKEN1.decimals)) * 1e10 / (uint256(startX10) * 10 ** TOKEN0.decimals) ) ) );
    int24 _lowerTick = TickMath.getTickAtSqrtRatio( uint160( 2**48 * Sqrt.sqrt( (2 ** 96 * (10 ** TOKEN1.decimals)) * 1e10 / (uint256(endX10  ) * 10 ** TOKEN0.decimals) ) ) );
    
    if (isTicker) { 
      feeTier   = 5;
      int24 midleTick;
      midleTick = (_upperTick + _lowerTick) / 2;
      _upperTick = (midleTick + int24(feeTier)) - (midleTick + int24(feeTier)) % int24(feeTier * 2);
      _lowerTick = _upperTick - int24(feeTier) - int24(feeTier);
      _name     = string(abi.encodePacked("Ticker ", baseSymbol, " ", quoteSymbol, " ", startName, "-", endName));
      _symbol    = string(abi.encodePacked("T-",startName,"_",endName,"-",baseSymbol,"-",quoteSymbol));
    } else {
      feeTier   = 5;
      _lowerTick = (_lowerTick + int24(feeTier)) - (_lowerTick + int24(feeTier)) % int24(feeTier * 2);
      _upperTick = (_upperTick + int24(feeTier)) - (_upperTick + int24(feeTier)) % int24(feeTier * 2);
      _name     = string(abi.encodePacked("Ranger ", baseSymbol, " ", quoteSymbol, " ", startName, "-", endName));
      _symbol   = string(abi.encodePacked("R-",startName,"_",endName,"-",baseSymbol,"-",quoteSymbol));
    }
    lowerTick = _lowerTick;
    upperTick = _upperTick;
    emit InitTR(address(asset0), address(asset1), startX10, endX10);
  }
  
  
  /// @notice Create a full range position, dont rely on token price but set ticks to min and max
  function initProxyFullRange(IAaveOracle _oracle, ERC20 asset0, ERC20 asset1) external {
    require(address(_oracle) != address(0x0), "Invalid oracle");
    require(status == ProxyState.INIT_PROXY, "!InitProxy");
    creator = msg.sender;
    status = ProxyState.INIT_LP;
    ORACLE = _oracle;
    
    TOKEN0.token    = asset0;
    TOKEN0.decimals = asset0.decimals();
    TOKEN1.token     = asset1;
    TOKEN1.decimals  = asset1.decimals();
    string memory quoteSymbol = asset0.symbol();
    string memory baseSymbol  = asset1.symbol();
    feeTier = 5;
    upperTick = TickMath.MAX_TICK - TickMath.MAX_TICK % int24(feeTier);
    lowerTick = -upperTick;
    _name   = string(abi.encodePacked("Ranger full ", baseSymbol, " ", quoteSymbol));
    _symbol = string(abi.encodePacked("R-full-",baseSymbol,"-",quoteSymbol));
    emit InitTR(address(asset0), address(asset1), 0, UINT128MAX);
  }
  

  /// @notice Get the name of this contract token
  /// @dev Override name, symbol and decimals from ERC20 inheritance
  function name()     public view virtual override returns (string memory) { return _name; }
  /// @notice Get the symbol of this contract token
  function symbol()   public view virtual override returns (string memory) { return _symbol; }


  /// @notice Initialize a TokenizableRange by adding assets in the underlying Uniswap V3 position
  /// @param n0 Amount of quote token added
  /// @param n1 Amount of base token added
  /// @notice The token amounts must be 95% correct or this will fail the Uniswap slippage check
  function init(uint n0, uint n1) external {
    require(status == ProxyState.INIT_LP, "!InitLP");
    require(msg.sender == creator, "Unallowed call");
    status = ProxyState.READY;
    TOKEN0.token.safeTransferFrom(msg.sender, address(this), n0);
    TOKEN1.token.safeTransferFrom(msg.sender, address(this), n1);
    TOKEN0.token.safeIncreaseAllowance(address(POS_MGR), n0);
    TOKEN1.token.safeIncreaseAllowance(address(POS_MGR), n1);
    (tokenId, liquidity, , ) = POS_MGR.mint( 
      INonfungiblePositionManager.MintParams({
         token0: address(TOKEN0.token),
         token1: address(TOKEN1.token),
         fee: feeTier * 100,
         tickLower: lowerTick,
         tickUpper: upperTick,
         amount0Desired: n0,
         amount1Desired: n1,
         amount0Min: n0 * 95 / 100,
         amount1Min: n1 * 95 / 100,
         recipient: address(this),
         deadline: block.timestamp
      })
    );
    // Transfer remaining assets back to user
    TOKEN0.token.safeTransfer( msg.sender,  TOKEN0.token.balanceOf(address(this)));
    TOKEN1.token.safeTransfer(msg.sender, TOKEN1.token.balanceOf(address(this)));
    _mint(msg.sender, 1e18);
    emit Deposit(msg.sender, 1e18);
  }
  
  
  /// @notice Claim the accumulated Uniswap V3 trading fees
  /// @dev In this version, bc compounding fees prevents depositing a fixed liquidity amount, fees arent compounded
  /// but fully sent to a vault if it exists, else sent to treasury
  function claimFee() public {
    (uint256 newFee0, uint256 newFee1) = POS_MGR.collect( 
      INonfungiblePositionManager.CollectParams({
        tokenId: tokenId,
        recipient: address(this),
        amount0Max: UINT128MAX,
        amount1Max: UINT128MAX
      })
    );
    // If there's no new fees generated, skip compounding logic;
    //if ((newFee0 == 0) && (newFee1 == 0)) return;  // dont skip for now as remaining fees need to be moved out
    uint tf0 = newFee0 * treasuryFee / 100;
    uint tf1 = newFee1 * treasuryFee / 100;
    if (tf0 > 0) TOKEN0.token.safeTransfer(treasury, tf0);
    if (tf1 > 0) TOKEN1.token.safeTransfer(treasury, tf1);
    
    address vault;
    // Call vault address in a try/catch structure as it's defined as a constant, not available in testing
    if (roerouter.code.length > 0) {
      try RoeRouter(roerouter).getVault(address(TOKEN0.token), address(TOKEN1.token)) returns (address _vault) {
        vault = _vault;
      }
      catch {}
    }
    
    if (vault == address(0x0)) vault = treasury; // if case vault doesnt exist send to treasury
    tf0 = TOKEN0.token.balanceOf(address(this));
    if (tf0 > 0) {
      TOKEN0.token.safeTransfer(vault, tf0);
      fee0 = 0;
    }
    tf1 = TOKEN1.token.balanceOf(address(this));
    if (tf1 > 0) {
      TOKEN1.token.safeTransfer(vault, tf1);
      fee1 = 0;
    }
    emit ClaimFees(newFee0, newFee1);
  }
  
  
  /// @notice Deposit assets into the range
  /// @param n0 Amount of quote asset
  /// @param n1 Amount of base asset
  /// @return lpAmt Amount of LP tokens created
  /// @dev Simplified function to deposit and receive any amount of liquidity with a default max 5% slippage
  function deposit(uint256 n0, uint256 n1) external returns (uint256 lpAmt) {
    lpAmt = depositExactly(n0, n1, 0, 95);
  }
  

  /// @notice Deposit assets and get exactly the expected liquidity
  /// @param n0 Amount of quote asset
  /// @param n1 Amount of base asset
  /// @param expectedAmount Expected amount of liquidity created (non biding)
  /// @param slippage Max slippage
  /// @return lpAmt Amount of LP tokens created
  /// @dev If the returned liquidity is very small (=its underlying tokens are both 0), we can round the amount of
  /// liquidity minted. It is possible to abuse this to inflate the supply, but the gain would be several orders of magnitude
  /// lower that the necessary gas cost
  function depositExactly(uint256 n0, uint256 n1, uint256 expectedAmount, uint slippage) public nonReentrant returns (uint256 lpAmt) {
    
  
    // Once all assets were withdrawn after initialisation, this is considered closed
    // Prevents TR oracle values from being too manipulatable by emptying the range and redepositing 
    require(totalSupply() > 0, "TR Closed"); 
    
    claimFee();
    TOKEN0.token.safeTransferFrom(msg.sender, address(this), n0);
    TOKEN1.token.safeTransferFrom(msg.sender, address(this), n1);
    TOKEN0.token.safeIncreaseAllowance(address(POS_MGR), n0);
    TOKEN1.token.safeIncreaseAllowance(address(POS_MGR), n1);

    // New liquidity is indeed the amount of liquidity added, not the total, despite being unclear in Uniswap doc
    (uint128 newLiquidity, uint256 added0, uint256 added1) = POS_MGR.increaseLiquidity(
      INonfungiblePositionManager.IncreaseLiquidityParams({
        tokenId: tokenId,
        amount0Desired: n0,
        amount1Desired: n1,
        amount0Min: n0 * slippage / 100,
        amount1Min: n1 * slippage / 100,
        deadline: block.timestamp
      })
    );
    
    uint256 feeLiquidity;
    if (fee0 > 0 || fee1 > 0){
      uint256 TOKEN0_PRICE = ORACLE.getAssetPrice(address(TOKEN0.token));
      uint256 TOKEN1_PRICE = ORACLE.getAssetPrice(address(TOKEN1.token));
      require (TOKEN0_PRICE > 0 && TOKEN1_PRICE > 0, "Invalid Oracle Price");
      // Calculate the equivalent liquidity amount of the non-yet compounded fees
      // Assume linearity for liquidity in same tick range; calculate feeLiquidity equivalent and consider it part of base liquidity 
      uint token0decimals = TOKEN0.decimals;
      uint token1decimals = TOKEN1.decimals;
      feeLiquidity = newLiquidity * ( (fee0 * TOKEN0_PRICE / 10 ** token0decimals) + (fee1 * TOKEN1_PRICE / 10 ** token1decimals) )   
                                    / ( (added0   * TOKEN0_PRICE / 10 ** token0decimals) + (added1   * TOKEN1_PRICE / 10 ** token1decimals) ); 
    }
    lpAmt = totalSupply() * newLiquidity / (liquidity + feeLiquidity); 
    liquidity = liquidity + newLiquidity;
    
    // Round added liquidity up to expectedAmount if the difference is dust
    // ie. underlying amounts of liquidity difference is 0, or value is lower than 1 unit of token0 or token1
    if (lpAmt < expectedAmount){
      uint missingLiq = expectedAmount - lpAmt;
      uint missingLiqValue = missingLiq * latestAnswer() / 1e18;
      (uint u0, uint u1) = getTokenAmounts(missingLiq);
      // missing liquidity has no value, or underlying amount is 1 or less (meaning some 1 unit rounding error on low decimal tokens)
      if (missingLiqValue == 0 || (u0 <= 1 && u1 <= 1)){
        lpAmt = expectedAmount;
      }
      (u0, u1) = getTokenAmountsExcludingFees(expectedAmount);
    }
    _mint(msg.sender, lpAmt);
    if (n0 > added0) TOKEN0.token.safeTransfer(msg.sender, n0 - added0);
    if (n1 > added1) TOKEN1.token.safeTransfer(msg.sender, n1 - added1);
    emit Deposit(msg.sender, lpAmt);
  }
  
  
  /// @notice Withdraw assets from a range
  /// @param lp Amount of tokens withdrawn
  /// @param amount0Min Minimum amount of quote token withdrawn
  /// @param amount1Min Minimum amount of base token withdrawn
  function withdraw(uint256 lp, uint256 amount0Min, uint256 amount1Min) external nonReentrant returns (uint256 removed0, uint256 removed1) {
    claimFee();
    if (lp == 0) return (0, 0);
    uint removedLiquidity = uint(liquidity) * lp / totalSupply();
    
    _burn(msg.sender, lp);
    (removed0, removed1) = POS_MGR.decreaseLiquidity(
      INonfungiblePositionManager.DecreaseLiquidityParams({
        tokenId: tokenId,
        liquidity: uint128(removedLiquidity),
        amount0Min: amount0Min,
        amount1Min: amount1Min,
        deadline: block.timestamp
      })
    );
    liquidity = uint128(uint256(liquidity) - removedLiquidity); 
    if (removed0 > 0 || removed1 > 0){
      POS_MGR.collect( 
        INonfungiblePositionManager.CollectParams({
          tokenId: tokenId,
          recipient: msg.sender,
          amount0Max: uint128(removed0),
          amount1Max: uint128(removed1)
        })
      );
    }
    emit Withdraw(msg.sender, lp);
  }
  

  /// @notice Calculate the balance of underlying assets based on the assets price
  /// @param TOKEN0_PRICE Base token price
  /// @param TOKEN1_PRICE Quote token price
  function returnExpectedBalanceWithoutFees(uint TOKEN0_PRICE, uint TOKEN1_PRICE) internal view returns (uint256 amt0, uint256 amt1) {
    // if 0 get price from oracle
    if (TOKEN0_PRICE == 0) TOKEN0_PRICE = ORACLE.getAssetPrice(address(TOKEN0.token));
    if (TOKEN1_PRICE == 0) TOKEN1_PRICE = ORACLE.getAssetPrice(address(TOKEN1.token));

    (amt0, amt1) = LiquidityAmounts.getAmountsForLiquidity(
      uint160(Sqrt.sqrt((TOKEN0_PRICE * 10**TOKEN1.decimals * 2**96) / (TOKEN1_PRICE * 10**TOKEN0.decimals )) * 2**48),
      TickMath.getSqrtRatioAtTick(lowerTick), 
      TickMath.getSqrtRatioAtTick(upperTick),
      liquidity
    );
  }
    
    
  /// @notice Calculate the balance of underlying assets based on the assets price, including fees
  function returnExpectedBalance(uint TOKEN0_PRICE, uint TOKEN1_PRICE) public view returns (uint256 amt0, uint256 amt1) {
    (amt0, amt1) = returnExpectedBalanceWithoutFees(TOKEN0_PRICE, TOKEN1_PRICE);
    amt0 += fee0;
    amt1 += fee1;
  }

  /// @notice Return the price of LP tokens based on the underlying assets price
  /// @param TOKEN0_PRICE Base token price
  /// @param TOKEN1_PRICE Quote token price
  function getValuePerLPAtPrice(uint TOKEN0_PRICE, uint TOKEN1_PRICE) public view returns (uint256 priceX1e8) {
    if ( totalSupply() == 0 ) return 0;
    (uint256 amt0, uint256 amt1) = returnExpectedBalance(TOKEN0_PRICE, TOKEN1_PRICE);
    uint totalValue = TOKEN0_PRICE * amt0 / (10 ** TOKEN0.decimals) + amt1 * TOKEN1_PRICE / (10 ** TOKEN1.decimals);
    return totalValue * 1e18 / totalSupply();
  } 

  
  /// @notice Return the price of the LP token
  function latestAnswer() public view returns (uint256 priceX1e8) {
    return getValuePerLPAtPrice(ORACLE.getAssetPrice(address(TOKEN0.token)), ORACLE.getAssetPrice(address(TOKEN1.token)));
  }
  
  
  /// @notice Return the underlying tokens amounts for a given TR balance excluding the fees
  /// @param amount Amount of tokens we want the underlying amounts for
  function getTokenAmountsExcludingFees(uint amount) public view returns (uint token0Amount, uint token1Amount){
    address pool = V3_FACTORY.getPool(address(TOKEN0.token), address(TOKEN1.token), feeTier * 100);
    (uint160 sqrtPriceX96,,,,,,)  = IUniswapV3Pool(pool).slot0();
    (token0Amount, token1Amount) = LiquidityAmounts.getAmountsForLiquidity( sqrtPriceX96, TickMath.getSqrtRatioAtTick(lowerTick), TickMath.getSqrtRatioAtTick(upperTick),  uint128 ( uint(liquidity) * amount / totalSupply() ) );
  }


  /// @notice Return the underlying tokens amounts for a given TR balance
  /// @param amount Amount of tokens we want the underlying amounts for
  function getTokenAmounts(uint amount) public view returns (uint token0Amount, uint token1Amount){
    (token0Amount, token1Amount) = getTokenAmountsExcludingFees(amount);
    token0Amount += fee0 * amount / totalSupply();
    token1Amount += fee1 * amount / totalSupply();
  }
}
// File: contracts/PositionManager/PositionManager.sol


pragma solidity 0.8.19;












contract PositionManager is IFlashLoanReceiver {
  using SafeERC20 for ERC20;
  
  uint constant UINT256MAX = type(uint256).max;

  ////////////////////// VARS
  ILendingPoolAddressesProvider public ADDRESSES_PROVIDER; // IFlashLoanReceiver  requirement
  ILendingPool public LENDING_POOL; // IFlashLoanReceiver  requirement
  RoeRouter public immutable ROEROUTER; 
  
  
  ////////////////////// GENERAL   

  /// @param roerouter Address of Roe whitelist router
  constructor(address roerouter) {
    require(roerouter != address(0x0), "Invalid address");
    ROEROUTER = RoeRouter(roerouter);
  }


  ////////////////////// DISPATCHER
  
  /**
   * @notice Aave-compatible flashloan receiver
   * @param assets The address of the flash-borrowed asset
   * @param amounts The amount of the flash-borrowed asset
   * @param premiums The fee of the flash-borrowed asset
   * @param initiator The address of the flashloan initiator
   * @param params The byte-encoded params passed when initiating the flashloan
   * @return result True if the execution of the operation succeeds, false otherwise
   */
  function executeOperation(
    address[] calldata assets,
    uint256[] calldata amounts,
    uint256[] calldata premiums,
    address initiator,
    bytes calldata params
  ) virtual external returns (bool result) {
  }
  
  
  /// @notice Get lp, oracle, router and underlying tokens from RoeRouter
  /// @param poolId Id of the ROE pool
  /// @return lp ROE Lending pool address
  /// @return oracle Lending pool oracle
  /// @return router Lending pool LP asset router
  /// @return token0 First underlying token in lexicographic order
  /// @return token1 Second underlying token
  function getPoolAddresses(uint poolId) 
    internal view 
    returns( ILendingPool lp, IPriceOracle oracle, IUniswapV2Router01 router, address token0, address token1) 
  {
    (address lpap, address _token0, address _token1, address r, ) = ROEROUTER.pools(poolId);
    token0 = _token0;
    token1 = _token1;
    lp = ILendingPool(ILendingPoolAddressesProvider(lpap).getLendingPool());
    oracle = IPriceOracle(ILendingPoolAddressesProvider(lpap).getPriceOracle());
    router = IUniswapV2Router01(r);
  }
  
  
  /// @notice Check and set allowance
  /// @param token Token address
  /// @param spender Spender address
  /// @param amount Minimum allowance needed
  function checkSetAllowance(address token, address spender, uint amount) internal {
    uint currentAllowance = ERC20(token).allowance(address(this), spender);
    if (currentAllowance < amount) ERC20(token).safeIncreaseAllowance(spender, UINT256MAX - currentAllowance);
  }
  
  
  /// @notice Deposit remaining users assets back to ROE, repaying debt if any
  /// @param LP The ROE lending pool
  /// @param user The owner of the tokens
  /// @param asset The first asset to deposit
  function cleanup(ILendingPool LP, address user, address asset) internal {
    uint amt = ERC20(asset).balanceOf(address(this));
    if (amt > 0) {
      checkSetAllowance(asset, address(LP), amt);
      
      // if there is a debt, try to repay the debt 
      uint debt = ERC20(LP.getReserveData(asset).variableDebtTokenAddress).balanceOf(user);
      if ( debt > 0 ){
        if (amt <= debt ) {
          LP.repay( asset, amt, 2, user);
          return;
        }
        else {
          LP.repay( asset, debt, 2, user);
          amt = amt - debt;
        }
      }
      // deposit remaining tokens
      LP.deposit( asset, amt, user, 0 );
    }
  }


  /// @notice Send dust to treasury
  /// @param asset The token to transfer
  function removeDust(address asset) external {
    ERC20(asset).safeTransfer(ROEROUTER.treasury(), ERC20(asset).balanceOf(address(this))); 
  }


  /// @notice Transfer amount of aAssets here and withdraw without checks
  /// @param LP The ROE lending pool
  /// @param user The owner of the tokens withdrawn
  /// @param asset The asset withdrawn
  /// @param amount The amount withdrawn
  function PMWithdraw(ILendingPool LP, address user, address asset, uint amount) internal {
    if ( amount > 0 ){
      LP.PMTransfer(LP.getReserveData(asset).aTokenAddress, user, amount);
      LP.withdraw(asset, amount, address(this));
    }
  }  
  
  
  /// @notice Check LP underlying assets value against oracle values: allow a 1% error
  /// @param oracle The Lending pool oracle for the LP token
  /// @param assetA The first token address
  /// @param amountA The first token amount
  /// @param assetB The second token address
  /// @param amountB The second token amount
  function validateValuesAgainstOracle(IPriceOracle oracle, address assetA, uint amountA, address assetB, uint amountB) internal view {
    uint decimalsA = ERC20(assetA).decimals();
    uint decimalsB = ERC20(assetB).decimals();
    uint valueA = amountA * oracle.getAssetPrice(assetA);
    uint valueB = amountB * oracle.getAssetPrice(assetB);
    if (decimalsA > decimalsB) valueA = valueA / 10 ** (decimalsA - decimalsB);
    else if (decimalsA < decimalsB) valueB = valueB / 10 ** (decimalsB - decimalsA);
    require( valueA <= valueB * 101 / 100, "PM: LP Oracle Error");
    require( valueB <= valueA * 101 / 100, "PM: LP Oracle Error");
  }
}

// File: contracts/PositionManager/OptionsPositionManager.sol


pragma solidity 0.8.19;



interface  AmountsRouter {
  function getAmountsOut(uint256 amountIn, address[] calldata path) external returns (uint256[] memory amounts);
  function getAmountsIn(uint256 amountOut, address[] calldata path) external returns (uint256[] memory amounts);
}

contract OptionsPositionManager is PositionManager {
  using SafeERC20 for IERC20;

  ////////////////////// EVENTS
  event BuyOptions(address indexed user, address indexed asset, uint amount, uint amount0, uint amount1);
  event SellOptions(address indexed user, address indexed asset, uint amount, uint amount0, uint amount1);
  event ClosePosition(address indexed user, address indexed asset, uint amount, uint amount0, uint amount1);
  event LiquidatePosition(address indexed user, address indexed asset, uint amount, uint amount0, uint amount1);
  event ReducedPosition(address indexed user, address indexed asset, uint amount);


  /// @param roerouter Address of Roe whitelist router
  constructor (address roerouter) PositionManager(roerouter) {}


  ////////////////////// DISPATCHER
  /**
   * @notice Aave-compatible flashloan receiver dispatch: open a leverage position or liquidate a position
   * @param assets The address of the flash-borrowed asset
   * @param amounts The amount of the flash-borrowed asset
   * @param premiums The fee of the flash-borrowed asset
   * @param initiator The address of the flashloan initiator
   * @param params The byte-encoded params passed when initiating the flashloan
   * @return result True if the execution of the operation succeeds, false otherwise
   */
  function executeOperation(
    address[] calldata assets,
    uint256[] calldata amounts,
    uint256[] calldata premiums,
    address initiator,
    bytes calldata params
  ) override external returns (bool result) {
    uint8 mode = abi.decode(params, (uint8) );
    // Buy options
    if ( mode == 0 ){
      (, uint poolId, address user, address[] memory sourceSwap) = abi.decode(params, (uint8, uint, address, address[]));
      executeBuyOptions(poolId, assets, amounts, user, sourceSwap);
    }
    // Liquidate
    else {
      (, uint poolId, address user, address collateral) = abi.decode(params, (uint8, uint, address, address));
      executeLiquidation(poolId, assets, amounts, user, collateral);
    }
    result = true;
  }
  
  
  /// @notice Buy each flashloaned option
  function executeBuyOptions(
    uint poolId,
    address[] calldata assets,
    uint256[] calldata amounts,
    address user,
    address[] memory sourceSwap
  ) internal {
    (ILendingPool lendingPool,,, address token0, address token1 ) = getPoolAddresses(poolId);
    require( address(lendingPool) == msg.sender, "OPM: Call Unallowed");
    
    for ( uint8 k = 0; k<assets.length; k++){
      address asset = assets[k];
      uint amount = amounts[k];
      withdrawOptionAssets(poolId, asset, amount, sourceSwap[k], user);
    }
    // send all tokens to lendingPool
    cleanup(lendingPool, user, token0);
    cleanup(lendingPool, user, token1);
  }
  
  
  /// @notice Execute operation liquidation
  function executeLiquidation(
    uint poolId,
    address[] calldata assets,
    uint256[] calldata amounts,
    address user,
    address collateral
  ) internal {
    (ILendingPool lendingPool,,, address token0, address token1) = getPoolAddresses(poolId);
    require( address(lendingPool) == msg.sender, "OPM: Call Unallowed");
    uint[2] memory amts = [ERC20(token0).balanceOf(address(this)), ERC20(token1).balanceOf(address(this))];
    for ( uint8 k =0; k<assets.length; k++){
      address debtAsset = assets[k];
      
      // simple liquidation: debt is transferred from user to liquidator and collateral deposited to roe
      uint amount = amounts[k];
      
      // liquidate and send assets here
      checkSetAllowance(debtAsset, address(lendingPool), amount);
      lendingPool.liquidationCall(collateral, debtAsset, user, amount, false);
      // repay tokens
      uint debt = closeDebt(poolId, address(this), debtAsset, amount, collateral);
      uint amt0 = ERC20(token0).balanceOf(address(this));
      uint amt1 = ERC20(token1).balanceOf(address(this));
      emit LiquidatePosition(user, debtAsset, debt, amt0 - amts[0], amt1 - amts[1]);
      amts[0] = amt0;
      amts[1] = amt1;
      
    }
  }


  ////////////////////// BUY OPTIONS
  
  /// @notice Withdraw underlying option assets and swap if necessary
  /// @param poolId ID of the ROE lending pool
  /// @param flashAsset Option asset to borrow
  /// @param flashAmount Amount to borrow
  /// @param sourceSwap Asset to swap (put-call parity)
  /// @param user Address of option buyer
  /// @dev Only withdraws the tokens and swap, doesnt deposit, as this is done afterwards to avoid doing multiple times
  function withdrawOptionAssets(
    uint poolId,
    address flashAsset,
    uint256 flashAmount,
    address sourceSwap,
    address user
  ) 
    private returns (bool result)
  {
    (, IPriceOracle oracle, IUniswapV2Router01 router, address token0, address token1) = getPoolAddresses(poolId);
    sanityCheckUnderlying(flashAsset, token0, token1);
    // Remove Liquidity and get underlying tokens
    (uint256 amount0, uint256 amount1) = TokenisableRange(flashAsset).withdraw(flashAmount, 0, 0);
    if (sourceSwap != address(0) ){
      require(sourceSwap == token0 || sourceSwap == token1, "OPM: Invalid Swap Token");
      address[] memory path = new address[](2);
      path[0] = sourceSwap ;
      path[1] = sourceSwap == token0 ? token1 : token0;
      uint amount = sourceSwap == token0 ? amount0 : amount1;

      uint received = swapExactTokensForTokens(router, oracle, amount, path);
      // if swap underlying, then sourceSwap amount is 0 and the other amount is amount withdrawn + amount received from swap
      amount0 = sourceSwap == token0 ? 0 : amount0 + received;
      amount1 = sourceSwap == token1 ? 0 : amount1 + received;
    }
    emit BuyOptions(user, flashAsset, flashAmount, amount0, amount1);
    result = true;
  }

  
  /// @notice Buy a list of option. An option is a triplet [TRAddress, amount, putOrCall]
  /// @param poolId ID of the ROE lending pool
  /// @param options Option addresses list
  /// @param amounts Option amounts list
  /// @param sourceSwap Source swap address for call-put parity
  /// @dev Because tickers are one coin or the other depending on the price, one can only buy OTM options. You can get ITM put by buying OTM call and swapping, or get ITM call by buying OTM put and swapping. If you wanna swap, set sourceSwap to the asset you *dont* want, otherwise must be address(0x0)
  function buyOptions(
    uint poolId, 
    address[] calldata options, 
    uint[] calldata amounts, 
    address[] calldata sourceSwap
  )
    external
  {
    require(options.length == amounts.length && sourceSwap.length == options.length, "OPM: Array Length Mismatch");
    bytes memory params = abi.encode(0, poolId, msg.sender, sourceSwap);
    (ILendingPool LP,,,, ) = getPoolAddresses(poolId);

    uint[] memory flashtype = new uint[](options.length);
    for (uint8 i = 0; i< options.length; ){
      flashtype[i] = 2;
      unchecked { i+=1; }
    }
    LP.flashLoan( address(this), options, amounts, flashtype, msg.sender, params, 0);
  }

  
  ////////////////////// LIQUIDATIONS
  
  /// @notice Liquidate up to 50% of an unhealthy position
  /// @param poolId ID of the ROE lending pool
  /// @param user The owner of the loan to liquidate
  /// @param options Array of borrowed Ticker assets to repay
  /// @param amounts Array of borrowed Ticker assets amounts to repay
  /// @param collateralAsset Asset used for liquidation fee
  /// @dev Flashloan the debt tokens to liquidate, then use liquidation assets to repay the flashloan
  function liquidate (
    uint poolId, 
    address user,
    address[] calldata options, 
    uint[] calldata amounts,
    address collateralAsset
  )
    external
  {
    require(options.length == amounts.length, "ARRAY_LEN_MISMATCH");
    bytes memory params = abi.encode(1, poolId, user, collateralAsset); // mode = 1 -> liquidation
    (ILendingPool LP,,, address token0, address token1) = getPoolAddresses(poolId);
    
    uint[] memory flashtype = new uint[](options.length);
    LP.flashLoan( address(this), options, amounts, flashtype, msg.sender, params, 0);

    // send all tokens to liquidator
    cleanup(LP, msg.sender, token0);
    cleanup(LP, msg.sender, token1);
  }


  ////////////////////// REDUCING POSITION
  
  /// @notice Repays a TR debt and send tokens back to user
  /// @param poolId ID of the ROE lending pool
  /// @param user Owner of the debt
  /// @param debtAsset the borrowed LP token address
  /// @param repayAmount amount of borrowed tokens to repay; 0 or higher than current debt will repay all
  /// @param collateralAsset Asset used for liquidation fee
  function close(
    uint poolId, 
    address user,
    address debtAsset, 
    uint repayAmount,
    address collateralAsset
  ) 
    external
  {
    (ILendingPool LP,,, address token0, address token1) = getPoolAddresses(poolId);
    uint debt = ERC20(LP.getReserveData(debtAsset).variableDebtTokenAddress).balanceOf(user);
    if ( repayAmount > 0 && repayAmount < debt ) debt = repayAmount;
    require(debt > 0, "OPM: No Debt");
    debt = closeDebt(poolId, user, debtAsset, debt, collateralAsset);

    cleanup(LP, user, token0);
    cleanup(LP, user, token1);
    if (msg.sender == user){
      (,,,,,uint256 hf) = LP.getUserAccountData(msg.sender);
      require(hf > 1e18, "Health factor too low");
    }
    emit ReducedPosition(user, debtAsset, debt);
  }


  /// @notice Repays a TR debt
  /// @param poolId ID of the ROE lending pool
  /// @param user Owner of the debt to close. If user is address(this), we dont repay but just recreate tokens, flashloan will take care of getting them back
  /// @param debtAsset the borrowed LP token address
  /// @param repayAmount amount of borrowed tokens to repay; 0 or higher than current debt will repay all
  /// @param collateralAsset Asset used for liquidation fee
  function closeDebt(
    uint poolId, 
    address user,
    address debtAsset, 
    uint repayAmount,
    address collateralAsset
  ) 
    internal returns (uint debt)
  {
    (ILendingPool LP,,IUniswapV2Router01 ammRouter, address token0, address token1) = getPoolAddresses(poolId);
    sanityCheckUnderlying(debtAsset, token0, token1);
    require(collateralAsset == token0 || collateralAsset == token1 || collateralAsset == address(0x0), "OPM: Invalid Collateral Asset");
    uint amtA;
    uint amtB;
    
    { //localize vars
      (uint token0Amount, uint token1Amount) = TokenisableRange(debtAsset).getTokenAmounts(repayAmount);
      checkExpectedBalances(debtAsset, repayAmount, token0Amount, token1Amount);
      checkSetAllowance(token0, debtAsset, token0Amount);
      checkSetAllowance(token1, debtAsset, token1Amount);
      // If called by this contract himself this is a liquidation, skip that step
      if (user != address(this) ){
        amtA = IERC20(LP.getReserveData(token0).aTokenAddress ).balanceOf(user);
        amtB = IERC20(LP.getReserveData(token1).aTokenAddress ).balanceOf(user);
        PMWithdraw(LP, user, token0, amtA );
        PMWithdraw(LP, user, token1, amtB );
        // If another user softLiquidates a share of the liquidation goes to the treasury
        if (user != msg.sender ) {
          uint feeAmount = calculateAndSendFee(poolId, token0Amount, token1Amount, collateralAsset);
          if (collateralAsset == token0) amtA -= feeAmount;
          else amtB -= feeAmount;
        }
      }
      else {
        // Assets are already present from liquidation
        amtA = ERC20(token0).balanceOf(user);
        amtB = ERC20(token1).balanceOf(user);
      }

      // swap if one token is missing - consider that there is enough 
      address[] memory path = new address[](2);
      if ( amtA < token0Amount ){
        path[0] = token1;
        path[1] = token0;
        swapTokensForExactTokens(ammRouter, token0Amount - amtA, amtB, path); 
      }
      else if ( amtB < token1Amount ){
        path[0] = token0;
        path[1] = token1;
        swapTokensForExactTokens(ammRouter, token1Amount - amtB, amtA, path); 
      }
      debt = TokenisableRange(debtAsset).depositExactly(token0Amount, token1Amount, repayAmount, 95);
    }
    checkSetAllowance(debtAsset, address(LP), debt);
    
    // If user closes, repay debt, else tokens will be taken back by the flashloan
    if (user != address(this) ) LP.repay( debtAsset, debt, 2, user);
    {
      uint amt0 = ERC20(token0).balanceOf(address(this));
      uint amt1 = ERC20(token1).balanceOf(address(this));
      // edge case where after swapping exactly the tokens and repaying debt, dust causes remaining asset balance to be slightly higher than before repaying
      if (amtA > amt0) 
        amt0 = amtA - amt0;
      else 
        amt0 = 0;
      if (amtB > amt1) 
        amt1 = amtB - amt1;
      else 
        amt1 = 0;
      emit ClosePosition(user, debtAsset, debt, amt0, amt1);
    }
    
    // Swap other token back to collateral: this allows to control exposure
    if (user == msg.sender && collateralAsset != address(0x0)) swapAll(poolId, collateralAsset == token0 ? token1 : token0);
  }
  
  
  /// @notice Check that amounts to deposit in TR are matching expected balance based on oracle, to avoid sandwich attacks
  /// @param debtAsset the borrowed LP token address
  /// @param debtAmount the amount of debt
  /// @param token0Amount Amount of token0 used to liquidate the debt
  /// @param token1Amount Amount of token1 used to liquidate the debt
  function checkExpectedBalances(address debtAsset, uint debtAmount, uint token0Amount, uint token1Amount) internal view
  {
    IAaveOracle oracle = TokenisableRange(debtAsset).ORACLE();
    (ERC20 token0, uint8 decimals0) = TokenisableRange(debtAsset).TOKEN0();
    (ERC20 token1, uint8 decimals1) = TokenisableRange(debtAsset).TOKEN1();
    uint debtValue = TokenisableRange(debtAsset).latestAnswer() * debtAmount / 1e18;
    uint tokensValue = token0Amount * oracle.getAssetPrice(address(token0)) / 10**decimals0 + token1Amount * oracle.getAssetPrice(address(token1)) / 10**decimals1;
    // check that value of underlying tokens > 98% theoretical value  of TR asset, or that this is dust 
    require( 
      (debtValue < 1e8 && tokensValue < 1e8 )
      || (tokensValue > debtValue * 98 / 100 && tokensValue < debtValue * 102 / 100), 
      "OPM: Slippage Error"
    );
  }

  
  /// @notice Calculates the liquidation fee and sends it to the treasury
  /// @param poolId ROE pool Id
  /// @param token0Amount Amount of token0 used to liquidate the debt
  /// @param token1Amount Amount of token1 used to liquidate the debt
  /// @param collateralAsset Asset used for liquidation fee
  function calculateAndSendFee(
    uint poolId, 
    uint token0Amount, 
    uint token1Amount, 
    address collateralAsset
  ) internal returns (uint feeAmount) {
    (, IPriceOracle oracle,, address token0, address token1) = getPoolAddresses(poolId);
    
    uint feeValueE8 = token0Amount * oracle.getAssetPrice(token0) / 10**ERC20(token0).decimals()
                    + token1Amount * oracle.getAssetPrice(token1) / 10**ERC20(token1).decimals() ;
    feeAmount = feeValueE8 * 10**ERC20(collateralAsset).decimals() / 100 / oracle.getAssetPrice(collateralAsset);
    
    require(feeAmount <= IERC20(collateralAsset).balanceOf(address(this)), "OPM: Insufficient Collateral");
    IERC20(collateralAsset).safeTransfer(ROEROUTER.treasury(), feeAmount);
  }

  
  ////////////////////// SELL OPTIONS
  
  
  /// @notice Sell options
  /// @param poolId ID of the ROE lending pool
  /// @param optionAddress The TokenisableRange representing the option
  /// @param amount0 The amount of underlying token0 to add
  /// @param amount1 The amount of underlying token1 to add
  /// @dev Amounts aren't checked and will revert if wrong. In 99.9% cases one of the amounts should be 0
  /// @dev Collateral needs to be in Lending Pool already
  function sellOptions(
    uint poolId,
    address optionAddress,
    uint amount0,
    uint amount1
  )
    external
  {
    (ILendingPool LP, IPriceOracle oracle,, address token0, address token1 ) = getPoolAddresses(poolId);
    require( LP.getReserveData(optionAddress).aTokenAddress != address(0x0), "OPM: Invalid Address" );
    
    PMWithdraw(LP, msg.sender, token0, amount0);
    PMWithdraw(LP, msg.sender, token1, amount1);
    checkSetAllowance(token0, optionAddress, amount0);
    checkSetAllowance(token1, optionAddress, amount1);
    uint deposited = TokenisableRange(optionAddress).deposit(amount0, amount1);
    
    emit SellOptions(msg.sender, optionAddress, deposited, amount0, amount1 );
    cleanup(LP, msg.sender, optionAddress);
    cleanup(LP, msg.sender, token0);
    cleanup(LP, msg.sender, token1);
  }
  
  
  /// @notice Stop selling = remove liquidity from a TR
  /// @param poolId Id of the pool
  /// @param optionAddress Address of the TR asset
  /// @param amount Amount of TR asset redeemed
  function withdrawOptions(
    uint poolId,
    address optionAddress,
    uint amount
  )
    external
  {
    (ILendingPool LP,,, address token0, address token1 ) = getPoolAddresses(poolId);
    require( LP.getReserveData(optionAddress).aTokenAddress != address(0x0), "OPM: Invalid Address" );
    PMWithdraw(LP, msg.sender, optionAddress, amount);

    // Get output amounts from oracle to avoid sandwich
    (uint amount0, uint amount1) = TokenisableRange(optionAddress).withdraw(amount, 0, 0);
    checkExpectedBalances(optionAddress, amount, amount0, amount1);
    cleanup(LP, msg.sender, optionAddress);
    cleanup(LP, msg.sender, token0);
    cleanup(LP, msg.sender, token1);
  }
  
  
  ////////////////////// HELPERS
  
  /// @notice Swap user assets; useful to change user risk profile
  /// @param poolId Id of the pool
  /// @param sourceAsset Asset to be swapped
  /// @return received Amount of target token received
  function swapAll(uint poolId, address sourceAsset) internal returns (uint received) {
    (ILendingPool LP, IPriceOracle oracle,IUniswapV2Router01 router, address token0, address token1) = getPoolAddresses(poolId);
    require(sourceAsset == token0 || sourceAsset == token1, "OPM: Invalid Swap Asset");
    uint amount = ERC20(sourceAsset).balanceOf(address(this));
    if (amount == 0) return 0;

    address[] memory path = new address[](2);
    path[0] = sourceAsset ;
    path[1] = sourceAsset == token0 ? token1 : token0;
    received = swapExactTokensForTokens(router, oracle, amount, path);
  }
  
  /// @notice Swaps assets for exact assets
  /// @param ammRouter AMM router
  /// @param oracle Price oracle
  /// @param amount Amount of target token received
  /// @param path The path [source, target] of the swap
  /// @return received Amount of target tokens received
  function swapExactTokensForTokens(IUniswapV2Router01 ammRouter, IPriceOracle oracle, uint amount, address[] memory path) 
    internal returns (uint256 received)
  {
    if (amount > 0 && AmountsRouter(address(ammRouter)).getAmountsOut(amount, path)[1] > 0){
      checkSetAllowance(path[0], address(ammRouter), amount);
      uint[] memory amounts = ammRouter.swapExactTokensForTokens(
        amount, 
        getTargetAmountFromOracle(oracle, path[0], amount, path[1]) * 99 / 100, // allow 1% slippage 
        path, 
        address(this), 
        block.timestamp
      );
      received = amounts[1];
    }
  }
  
  /// @notice Swaps assets for exact assets
  /// @param ammRouter AMM router
  /// @param recvAmount Amount of target token received
  /// @param maxAmount Amount of source token allowed to be spent minus margin
  /// @param path The path [source, target] of the swap
  function swapTokensForExactTokens(IUniswapV2Router01 ammRouter, uint recvAmount, uint maxAmount, address[] memory path) internal {
    checkSetAllowance(path[0], address(ammRouter), maxAmount);
    uint [] memory amountsIn = AmountsRouter(address(ammRouter)).getAmountsIn(recvAmount, path);
        
    require( amountsIn[0] <= maxAmount && amountsIn[0] > 0, "OPM: Invalid Swap Amounts" );
    require( amountsIn[0] <= ERC20(path[0]).balanceOf(address(this)), "OPM: Insufficient Token Amount" );
    amountsIn = ammRouter.swapTokensForExactTokens(
      recvAmount,
      maxAmount,
      path,
      address(this),
      block.timestamp
    );
  }
  

  /// @notice Calculate a target swap amount based on oracle-provided token prices
  /// @param oracle Price oracle
  /// @param assetA address of token A
  /// @param amountA Amount of toke A
  /// @param assetB address of token B
  /// @return amountB Amount of target token
  function getTargetAmountFromOracle(IPriceOracle oracle, address assetA, uint amountA, address assetB) 
    internal view returns (uint amountB) 
  {
    /**
      uint valueA = amountA * oracle.getAssetPrice(assetA) / 10**ERC20(assetA).decimals();
      uint valueB = amountB * oracle.getAssetPrice(assetB) / 10**ERC20(assetB).decimals();
      We expect valueA == valueB
    */
    uint priceAssetA = oracle.getAssetPrice(assetA);
    uint priceAssetB = oracle.getAssetPrice(assetB);
    require ( priceAssetA > 0 && priceAssetB > 0, "OPM: Invalid Oracle Price");
    amountB = amountA * priceAssetA * 10**ERC20(assetB).decimals() / 10**ERC20(assetA).decimals() / priceAssetB;
    require( amountB > 0, "OPM: Target Amount Too Low");
  }
  
  
  /// @notice Check that tr is a Tokenisable Range matching given tokens or revert
  /// @param tr Tokenisable range
  /// @param token0 Underlying token 0
  /// @param token1 Underlying token 1
  function sanityCheckUnderlying(address tr, address token0, address token1) internal view {
    (ERC20 t0, ) = TokenisableRange(tr).TOKEN0();
    (ERC20 t1, ) = TokenisableRange(tr).TOKEN1();
    require(token0 == address(t0) && token1 == address(t1), "OPM: Invalid Debt Asset");
  }
}