// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {IVRFCoordinatorV2Plus} from "./IVRFCoordinatorV2Plus.sol";

// IVRFCoordinatorV2PlusInternal is the interface used by chainlink core and should
// not be used by consumer conracts
// Future versions of VRF V2plus must conform to this interface
// VRF coordinator doesn't directly inherit from this interface because solidity
// imposes interface methods be external, whereas methods implementated VRF coordinator
// are public. This is OK because IVRFCoordinatorV2PlusInternal doesn't have any solidity
// use case. It is only used to generate gethwrappers
interface IVRFCoordinatorV2PlusInternal is IVRFCoordinatorV2Plus {
  event RandomWordsRequested(
    bytes32 indexed keyHash,
    uint256 requestId,
    uint256 preSeed,
    uint256 indexed subId,
    uint16 minimumRequestConfirmations,
    uint32 callbackGasLimit,
    uint32 numWords,
    bytes extraArgs,
    address indexed sender
  );

  event RandomWordsFulfilled(
    uint256 indexed requestId, uint256 outputSeed, uint256 indexed subId, uint96 payment, bool success, bool onlyPremium
  );

  struct RequestCommitment {
    uint64 blockNum;
    uint256 subId;
    uint32 callbackGasLimit;
    uint32 numWords;
    address sender;
    bytes extraArgs;
  }

  struct Proof {
    uint256[2] pk;
    uint256[2] gamma;
    uint256 c;
    uint256 s;
    uint256 seed;
    address uWitness;
    uint256[2] cGammaWitness;
    uint256[2] sHashWitness;
    uint256 zInv;
  }

  // solhint-disable-next-line func-name-mixedcase
  function s_requestCommitments(
    uint256 requestID
  ) external view returns (bytes32);

  function fulfillRandomWords(
    Proof calldata proof,
    RequestCommitment memory rc,
    bool onlyPremium
  ) external returns (uint96);

  // solhint-disable-next-line func-name-mixedcase
  function LINK_NATIVE_FEED() external view returns (address);
}