var FuncSwap = w3.MustNewFunc(`swap(
    (address currency0, address currency1, uint24 fee, int24 tickSpacing, address hooks) key,
    (bool zeroForOne, int256 amountSpecified, uint160 sqrtPriceLimitX96) params,
    bytes hookData
)`, "int256 delta")

type PoolKey struct {
    Currency0   common.Address
    Currency1   common.Address
    Fee         *big.Int 
    TickSpacing *big.Int
    Hooks       common.Addresss
}

type SwapParams struct {
    ZeroForOne        bool
    AmountSpecified   *big.Int
    SqrtPriceLimitX96 *big.Int 
}

var FuncSwap = w3.MustNewFunc(
    "swap(PoolKey key, SwapParams params, bytes hookData)", "int256 delta",
    PoolKey{}, SwapParams{},
)


type PoolKey struct {
    Currency0   common.Address
    Currency1   common.Address
    Fee         *big.Int `abitype:"uint24"`
    TickSpacing *big.Int `abitype:"int24"`
    Hooks       common.Addresss
}

type SwapParams struct {
    ZeroForOne        bool
    AmountSpecified   *big.Int `abitype:"int256"`
    SqrtPriceLimitX96 *big.Int `abitype:"uint160"`
}