// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title IGovernable Interface
 * @notice This is an interface used by the AxelarGateway contract to manage governance and mint limiter roles.
 */
interface IGovernable {
    error NotGovernance();
    error NotMintLimiter();
    error InvalidGovernance();
    error InvalidMintLimiter();

    event GovernanceTransferred(address indexed previousGovernance, address indexed newGovernance);
    event MintLimiterTransferred(address indexed previousGovernance, address indexed newGovernance);

    /**
     * @notice Returns the governance address.
     * @return address of the governance
     */
    function governance() external view returns (address);

    /**
     * @notice Returns the mint limiter address.
     * @return address of the mint limiter
     */
    function mintLimiter() external view returns (address);

    /**
     * @notice Transfer the governance role to another address.
     * @param newGovernance The new governance address
     */
    function transferGovernance(address newGovernance) external;

    /**
     * @notice Transfer the mint limiter role to another address.
     * @param newGovernance The new mint limiter address
     */
    function transferMintLimiter(address newGovernance) external;
}