// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

/// @notice The subset of Pyth Entropy V2 that RandomnessHub implements with identical
/// signatures, selectors and events. Behaviour differs; see docs/PYTH_COMPATIBILITY.md.
interface IEntropyV2Compatible {
    event Requested(
        address indexed provider,
        address indexed caller,
        uint64 indexed sequenceNumber,
        bytes32 userContribution,
        uint32 gasLimit,
        bytes extraArgs
    );

    event Revealed(
        address indexed provider,
        address indexed caller,
        uint64 indexed sequenceNumber,
        bytes32 randomNumber,
        bytes32 userContribution,
        bytes32 providerContribution,
        bool callbackFailed,
        bytes callbackReturnValue,
        uint32 callbackGasUsed,
        bytes extraArgs
    );

    function requestV2() external payable returns (uint64 assignedSequenceNumber);

    function requestV2(uint32 gasLimit) external payable returns (uint64 assignedSequenceNumber);

    function requestV2(address provider, uint32 gasLimit) external payable returns (uint64 assignedSequenceNumber);

    function requestV2(
        address provider,
        bytes32 userRandomNumber,
        uint32 gasLimit
    ) external payable returns (uint64 assignedSequenceNumber);

    function getDefaultProvider() external view returns (address provider);

    function getFeeV2() external view returns (uint128 feeAmount);

    function getFeeV2(uint32 gasLimit) external view returns (uint128 feeAmount);

    function getFeeV2(address provider, uint32 gasLimit) external view returns (uint128 feeAmount);
}