// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4 <0.9.0;

/// @title Keep3rRoles contract
/// @notice Manages the Keep3r specific roles
interface IKeep3rRoles {
  // Events

  /// @notice Emitted when a slasher is added
  /// @param _slasher Address of the added slasher
  event SlasherAdded(address _slasher);

  /// @notice Emitted when a slasher is removed
  /// @param _slasher Address of the removed slasher
  event SlasherRemoved(address _slasher);

  /// @notice Emitted when a disputer is added
  /// @param _disputer Address of the added disputer
  event DisputerAdded(address _disputer);

  /// @notice Emitted when a disputer is removed
  /// @param _disputer Address of the removed disputer
  event DisputerRemoved(address _disputer);

  // Variables

  /// @notice Maps an address to a boolean to determine whether the address is a slasher or not.
  /// @return _isSlasher Whether the address is a slasher or not
  function slashers(address _slasher) external view returns (bool _isSlasher);

  /// @notice Maps an address to a boolean to determine whether the address is a disputer or not.
  /// @return _isDisputer Whether the address is a disputer or not
  function disputers(address _disputer) external view returns (bool _isDisputer);

  // Errors

  /// @notice Throws if the address is already a registered slasher
  error SlasherExistent();

  /// @notice Throws if caller is not a registered slasher
  error SlasherUnexistent();

  /// @notice Throws if the address is already a registered disputer
  error DisputerExistent();

  /// @notice Throws if caller is not a registered disputer
  error DisputerUnexistent();

  /// @notice Throws if the msg.sender is not a slasher or is not a part of governance
  error OnlySlasher();

  /// @notice Throws if the msg.sender is not a disputer or is not a part of governance
  error OnlyDisputer();

  // Methods

  /// @notice Registers a slasher by updating the slashers mapping
  function addSlasher(address _slasher) external;

  /// @notice Removes a slasher by updating the slashers mapping
  function removeSlasher(address _slasher) external;

  /// @notice Registers a disputer by updating the disputers mapping
  function addDisputer(address _disputer) external;

  /// @notice Removes a disputer by updating the disputers mapping
  function removeDisputer(address _disputer) external;
}