// SPDX-License-Identifier: MIT
// +build ovm
pragma solidity >0.5.0 <0.8.0;
pragma experimental ABIEncoderV2;

interface iBaseCustomCrossDomainMessenger {
    /**********
     * Events *
     **********/
    event SentMessage(bytes message);
    event RelayedMessage(bytes32 msgHash);

    /**********************
     * Contract Variables *
     **********************/
    function xDomainMessageSender() external view returns (address);

    /********************
     * Public Functions *
     ********************/

    /**
     * Sends a cross domain message to the target messenger.
     * @param _target Target contract address.
     * @param _message Message to send to the target.
     * @param _gasLimit Gas limit for the provided message.
     * @param _timelock Timelock (in seconds) for the provided message.
     */
    function sendMessage(
        address _target,
        bytes calldata _message,
        uint32 _gasLimit,
        uint256 _timelock
    ) external;
}