// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;

/// @notice Chainlink VRF V2.5 direct-funding wrapper surface; native amounts are wei.
interface IDirectFundingVrfWrapper {
    /// @dev Uses tx.gasprice; off-chain eth_call callers must set gasPrice explicitly.
    function calculateRequestPriceNative(uint32 callbackGasLimit, uint32 numWords) external view returns (uint256);
    function estimateRequestPriceNative(uint32 callbackGasLimit, uint32 numWords, uint256 requestGasPriceWei)
        external view returns (uint256);
    function requestRandomWordsInNative(
        uint32 callbackGasLimit, uint16 requestConfirmations, uint32 numWords, bytes calldata extraArgs
    ) external payable returns (uint256 requestId);
    function getConfig() external view returns (
        int256 fallbackWeiPerUnitLink,
        uint32 stalenessSeconds,
        uint32 fulfillmentFlatFeeNativePPM,
        uint32 fulfillmentFlatFeeLinkDiscountPPM,
        uint32 wrapperGasOverhead,
        uint32 coordinatorGasOverheadNative,
        uint32 coordinatorGasOverheadLink,
        uint16 coordinatorGasOverheadPerWord,
        uint8 wrapperNativePremiumPercentage,
        uint8 wrapperLinkPremiumPercentage,
        bytes32 keyHash,
        uint8 maxNumWords
    );
}