// File: @openzeppelin/contracts-4.2.0/access/Ownable.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _setOwner(_msgSender());
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _setOwner(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: @openzeppelin/contracts-4.2.0/utils/Context.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// File: contracts/tokenomics/voting_escrow/SmartWalletChecker.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;

import "@openzeppelin/contracts-4.2.0/access/Ownable.sol";

contract SmartWalletChecker is Ownable {
    bool public isWhitelistEnabled;
    mapping(address => bool) public wallets;
    address public checker;
    address public future_checker;

    event ApproveWallet(address);
    event RevokeWallet(address);
    event WhitelistEnabled(bool);

    constructor(bool _isWhitelistEnabled) public Ownable() {
        // Set state variables
        setIsWhitelistEnabled(_isWhitelistEnabled);
    }

    function commitSetChecker(address _checker) external onlyOwner {
        future_checker = _checker;
    }

    function applySetChecker() external onlyOwner {
        checker = future_checker;
    }

    function approveWallet(address _wallet) external onlyOwner {
        wallets[_wallet] = true;

        emit ApproveWallet(_wallet);
    }

    function revokeWallet(address _wallet) external onlyOwner {
        wallets[_wallet] = false;

        emit RevokeWallet(_wallet);
    }

    function setIsWhitelistEnabled(bool _isWhitelistEnabled) public onlyOwner {
        isWhitelistEnabled = _isWhitelistEnabled;

        emit WhitelistEnabled(_isWhitelistEnabled);
    }

    function check(address _wallet) external view returns (bool) {
        if (!isWhitelistEnabled) {
            return true;
        }

        bool _check = wallets[_wallet];
        if (_check) {
            return _check;
        } else {
            if (checker != address(0)) {
                return SmartWalletChecker(checker).check(_wallet);
            }
        }
        return false;
    }
}