// SPDX-License-Identifier: BUSL-1.1

pragma solidity >=0.7.0;
pragma abicoder v2;

import "../utility/LayerZeroPacket.sol";
import "./ILayerZeroValidationLibrary.sol";

interface IValidationLibraryHelper {
    struct ULNLog{
        bytes32 contractAddress;
        bytes32 topicZeroSig;
        bytes data;
    }

    function getVerifyLog(bytes32 hashRoot, uint[] memory receiptSlotIndex, uint logIndex, bytes[] memory proof) external pure returns(ULNLog memory);
    function getPacket(bytes memory data, uint16 srcChain, uint sizeOfSrcAddress, bytes32 ulnAddress) external pure returns(LayerZeroPacket.Packet memory);
    function getUtilsVersion() external view returns(uint8);
}