// SPDX-License-Identifier: MIT
pragma solidity ^0.8.26;

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

interface IL1Block is ISemver {
    /// @notice The latest L1 block number known by the L2 system.
    function number() external view returns (uint64);

    /// @notice The latest L1 timestamp known by the L2 system.
    function timestamp() external view returns (uint64);

    /// @notice The latest L1 base fee.
    function basefee() external view returns (uint256);

    /// @notice The latest L1 blockhash.
    function hash() external view returns (bytes32);

    /// @notice The number of L2 blocks in the same epoch.
    function sequenceNumber() external view returns (uint64);

    /// @notice The scalar value applied to the L1 blob base fee portion of the blob-capable L1 cost func.
    function blobBaseFeeScalar() external view returns (uint32);

    /// @notice The scalar value applied to the L1 base fee portion of the blob-capable L1 cost func.
    function baseFeeScalar() external view returns (uint32);

    /// @notice The versioned hash to authenticate the batcher by.
    function batcherHash() external view returns (bytes32);

    /**
     * @notice The overhead value applied to the L1 portion of the transaction fee.
     * @custom:legacy
     */
    function l1FeeOverhead() external view returns (uint256);

    /**
     * @notice The scalar value applied to the L1 portion of the transaction fee.
     * @custom:legacy
     */
    function l1FeeScalar() external view returns (uint256);

    /// @notice The latest L1 blob base fee.
    function blobBaseFee() external view returns (uint256);

    /**
     * @notice Updates the L1 block values.
     * @custom:legacy
     * @param _number         L1 blocknumber.
     * @param _timestamp      L1 timestamp.
     * @param _basefee        L1 basefee.
     * @param _hash           L1 blockhash.
     * @param _sequenceNumber Number of L2 blocks since epoch start.
     * @param _batcherHash    Versioned hash to authenticate batcher by.
     * @param _l1FeeOverhead  L1 fee overhead.
     * @param _l1FeeScalar    L1 fee scalar.
     */
    function setL1BlockValues(
        uint64 _number,
        uint64 _timestamp,
        uint256 _basefee,
        bytes32 _hash,
        uint64 _sequenceNumber,
        bytes32 _batcherHash,
        uint256 _l1FeeOverhead,
        uint256 _l1FeeScalar
    ) external;
}