// SPDX-License-Identifier: UNLICENSED
// Proprietary - (c) 2026 Durian (durianfun). All rights reserved. Not open source; for Durianfun + authorized integrations only. See /LICENSE.
pragma solidity 0.8.24;

/// @title  IEntropyConsumer
/// @notice The one function DurianEntropyV2 calls back into your contract with the randomness.
///         Inherit `EntropyConsumer` (which implements this safely) instead of implementing it raw.
/// @dev    Mirrors Chainlink VRF's `fulfillRandomWords` / Pyth Entropy's `IEntropyConsumer`:
///         the callback MUST NOT revert on the happy path and MUST gate `msg.sender == entropy`.
interface IEntropyConsumer {
    /// @param id  The request id returned by `requestCallback`.
    /// @param rng The 256-bit randomness. Derive many values with `EntropyLib` (expand/pick/digits).
    function onRandomness(uint256 id, uint256 rng) external;
}