{
    "Function": "_swapAndPrepareAmounts",
    "File": "src/transformers/V3Utils.sol",
    "Parent Contracts": [
        "lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol",
        "src/utils/Swapper.sol",
        "src/interfaces/IErrors.sol",
        "lib/v3-core/contracts/interfaces/callback/IUniswapV3SwapCallback.sol"
    ],
    "High-Level Calls": [
        "SafeERC20",
        "SafeERC20",
        "SafeERC20",
        "SafeERC20"
    ],
    "Internal Calls": [
        "_transferToken",
        "_routerSwap",
        "_routerSwap",
        "_routerSwap",
        "_routerSwap",
        "revert AmountError()",
        "revert AmountError()"
    ],
    "Library Calls": [
        "safeApprove",
        "safeApprove",
        "safeApprove",
        "safeApprove"
    ],
    "Low-Level Calls": [],
    "Code": "function _swapAndPrepareAmounts(SwapAndMintParams memory params, bool unwrap)\n        internal\n        returns (uint256 total0, uint256 total1)\n    {\n        if (params.swapSourceToken == params.token0) {\n            if (params.amount0 < params.amountIn1) {\n                revert AmountError();\n            }\n            (uint256 amountInDelta, uint256 amountOutDelta) = _routerSwap(\n                Swapper.RouterSwapParams(\n                    params.token0, params.token1, params.amountIn1, params.amountOut1Min, params.swapData1\n                )\n            );\n            total0 = params.amount0 - amountInDelta;\n            total1 = params.amount1 + amountOutDelta;\n        } else if (params.swapSourceToken == params.token1) {\n            if (params.amount1 < params.amountIn0) {\n                revert AmountError();\n            }\n            (uint256 amountInDelta, uint256 amountOutDelta) = _routerSwap(\n                Swapper.RouterSwapParams(\n                    params.token1, params.token0, params.amountIn0, params.amountOut0Min, params.swapData0\n                )\n            );\n            total1 = params.amount1 - amountInDelta;\n            total0 = params.amount0 + amountOutDelta;\n        } else if (address(params.swapSourceToken) != address(0)) {\n            (uint256 amountInDelta0, uint256 amountOutDelta0) = _routerSwap(\n                Swapper.RouterSwapParams(\n                    params.swapSourceToken, params.token0, params.amountIn0, params.amountOut0Min, params.swapData0\n                )\n            );\n            (uint256 amountInDelta1, uint256 amountOutDelta1) = _routerSwap(\n                Swapper.RouterSwapParams(\n                    params.swapSourceToken, params.token1, params.amountIn1, params.amountOut1Min, params.swapData1\n                )\n            );\n            total0 = params.amount0 + amountOutDelta0;\n            total1 = params.amount1 + amountOutDelta1;\n\n            // return third token leftover if any\n            uint256 leftOver = params.amountIn0 + params.amountIn1 - amountInDelta0 - amountInDelta1;\n\n            if (leftOver != 0) {\n                _transferToken(params.recipient, params.swapSourceToken, leftOver, unwrap);\n            }\n        } else {\n            total0 = params.amount0;\n            total1 = params.amount1;\n        }\n\n        if (total0 != 0) {\n            SafeERC20.safeApprove(params.token0, address(nonfungiblePositionManager), 0);\n            SafeERC20.safeApprove(params.token0, address(nonfungiblePositionManager), total0);\n        }\n        if (total1 != 0) {\n            SafeERC20.safeApprove(params.token1, address(nonfungiblePositionManager), 0);\n            SafeERC20.safeApprove(params.token1, address(nonfungiblePositionManager), total1);\n        }\n    }"
}