{
    "Function": "leverageDown",
    "File": "src/transformers/LeverageTransformer.sol",
    "Parent Contracts": [
        "src/utils/Swapper.sol",
        "src/interfaces/IErrors.sol",
        "lib/v3-core/contracts/interfaces/callback/IUniswapV3SwapCallback.sol"
    ],
    "High-Level Calls": [
        "INonfungiblePositionManager",
        "IVault",
        "SafeCast",
        "SafeCast",
        "SafeERC20",
        "INonfungiblePositionManager",
        "SafeERC20",
        "INonfungiblePositionManager",
        "IVault",
        "SafeERC20"
    ],
    "Internal Calls": [
        "_routerSwap",
        "_routerSwap"
    ],
    "Library Calls": [
        "safeApprove",
        "toUint128",
        "safeTransfer",
        "toUint128",
        "safeTransfer"
    ],
    "Low-Level Calls": [],
    "Code": "function leverageDown(LeverageDownParams calldata params) external {\n        address token = IVault(msg.sender).asset();\n        (,, address token0, address token1,,,,,,,,) = nonfungiblePositionManager.positions(params.tokenId);\n\n        uint256 amount0;\n        uint256 amount1;\n\n        INonfungiblePositionManager.DecreaseLiquidityParams memory decreaseLiquidityParams = INonfungiblePositionManager\n            .DecreaseLiquidityParams(\n            params.tokenId, params.liquidity, params.amountRemoveMin0, params.amountRemoveMin1, params.deadline\n        );\n        (amount0, amount1) = nonfungiblePositionManager.decreaseLiquidity(decreaseLiquidityParams);\n\n        INonfungiblePositionManager.CollectParams memory collectParams = INonfungiblePositionManager.CollectParams(\n            params.tokenId,\n            address(this),\n            params.feeAmount0 == type(uint128).max ? type(uint128).max : SafeCast.toUint128(amount0 + params.feeAmount0),\n            params.feeAmount1 == type(uint128).max ? type(uint128).max : SafeCast.toUint128(amount1 + params.feeAmount1)\n        );\n        (amount0, amount1) = nonfungiblePositionManager.collect(collectParams);\n\n        uint256 amount = token == token0 ? amount0 : (token == token1 ? amount1 : 0);\n\n        if (params.amountIn0 > 0 && token != token0) {\n            (uint256 amountIn, uint256 amountOut) = _routerSwap(\n                Swapper.RouterSwapParams(\n                    IERC20(token0), IERC20(token), params.amountIn0, params.amountOut0Min, params.swapData0\n                )\n            );\n            amount0 -= amountIn;\n            amount += amountOut;\n        }\n        if (params.amountIn1 > 0 && token != token1) {\n            (uint256 amountIn, uint256 amountOut) = _routerSwap(\n                Swapper.RouterSwapParams(\n                    IERC20(token1), IERC20(token), params.amountIn1, params.amountOut1Min, params.swapData1\n                )\n            );\n            amount1 -= amountIn;\n            amount += amountOut;\n        }\n\n        SafeERC20.safeApprove(IERC20(token), msg.sender, amount);\n        IVault(msg.sender).repay(params.tokenId, amount, false);\n\n        // send leftover tokens\n        if (amount0 > 0 && token != token0) {\n            SafeERC20.safeTransfer(IERC20(token0), params.recipient, amount0);\n        }\n        if (amount1 > 0 && token != token1) {\n            SafeERC20.safeTransfer(IERC20(token1), params.recipient, amount1);\n        }\n    }"
}