// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;

import "@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol";

abstract contract AccessControl is AccessControlUpgradeable {
    // role definition
    bytes32 public constant UPGRADER_ROLE = keccak256("UPGRADER_ROLE");
    bytes32 public constant STAFF_ROLE = keccak256("STAFF_ROLE");

    modifier onlyAdmin() {
        require(
            hasRole(DEFAULT_ADMIN_ROLE, msg.sender),
            "Only Admin can perform action"
        );
        _;
    }

    modifier onlyUpgrader() {
        require(
            hasRole(UPGRADER_ROLE, msg.sender),
            "Only UPGRADER can perform action"
        );
        _;
    }

    modifier onlyStaff() {
        require(
            hasRole(DEFAULT_ADMIN_ROLE, msg.sender) ||
                hasRole(STAFF_ROLE, msg.sender),
            "Only Admin can perform action"
        );
        _;
    }
}