IBroadcastAmbImplementation.sol

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.23;

/// @title IBroadcastAmbImplementation
/// @dev Interface for AMBs used in Broadcasting
/// @author ZeroPoint Labs
interface IBroadcastAmbImplementation {
    
    //////////////////////////////////////////////////////////////
    //                          EVENTS                          //
    //////////////////////////////////////////////////////////////

    event ChainAdded(uint64 indexed superChainId);
    event AuthorizedImplAdded(uint64 indexed superChainId, address indexed authImpl);

    //////////////////////////////////////////////////////////////
    //              EXTERNAL VIEW FUNCTIONS                     //
    //////////////////////////////////////////////////////////////

    /// @dev returns the gas fees estimation in native tokens
    /// @param message_ is the cross-chain message to be broadcasted
    /// @param extraData_  is optional broadcast override information
    /// @return fees is the native_tokens to be sent along the transaction
    /// @notice estimation differs for different message bridges.
    function estimateFees(bytes memory message_, bytes memory extraData_) external view returns (uint256 fees);

    //////////////////////////////////////////////////////////////
    //              EXTERNAL WRITE FUNCTIONS                    //
    //////////////////////////////////////////////////////////////

    /// @dev allows state registry to send messages to multiple dst chains
    /// @param srcSender_ is the caller (used for gas refunds)
    /// @param message_ is the cross-chain message to be broadcasted
    /// @param extraData_ is optional broadcast override information
    function broadcastPayload(address srcSender_, bytes memory message_, bytes memory extraData_) external payable;
}