// SPDX-License-Identifier: MIT

// File: @openzeppelin/contracts/utils/Context.sol


// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

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: @openzeppelin/contracts/access/Ownable.sol


// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;


/**
 * @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() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        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 {
        _transferOwnership(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");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: contracts/MAMStake.sol


pragma solidity ^0.8.6;





interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// File: @openzeppelin/contracts/token/ERC721/IERC721.sol


// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;


/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);
}






interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}


library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b)
        internal
        pure
        returns (bool, uint256)
    {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b)
        internal
        pure
        returns (bool, uint256)
    {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b)
        internal
        pure
        returns (bool, uint256)
    {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b)
        internal
        pure
        returns (bool, uint256)
    {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b)
        internal
        pure
        returns (bool, uint256)
    {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

abstract contract ReentrancyGuard {
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    modifier nonReentrant() {
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
        _status = _ENTERED;

        _;
        _status = _NOT_ENTERED;
    }
}

contract MAMStake is Ownable, IERC721Receiver, ReentrancyGuard {
    using SafeMath for uint256;


    IERC721Enumerable public mam;
    IERC721Enumerable public mutant;

    IERC20 public token;
    

    mapping(uint256 => bool) public mMultiplier;
    mapping(uint256 => bool) public tMultiplier;
    mapping(uint256 => bool) public lMultiplier;

    mapping(uint256 => address) public mamTokenOwnerOf;
    mapping(uint256 => uint256) public mamTier;
    mapping(uint256 => uint256) public mamTokenStakedAt;
    mapping(address => uint256) public numberMamStaked;


   mapping(uint256 => address) public mutantTokenOwnerOf;
   mapping(uint256 => uint256) public mutantTier;
   mapping(uint256 => uint256) public mutantTokenStakedAt;
   mapping(address => uint256) public numberMutantStaked;



    uint256 public dayRate = 5;
    uint256 public firsttier = 45; //number of days
    uint256 public secondtier = 90; //number of days
    


    uint256 public totalStaked; 
    uint256 public mamStaked;
    uint256 public mutantStaked;
    uint256 public amountPaid;
    uint256[] public legendaryMutantIds;
    uint256[] public topTenIds;
    uint256[] public legendaryIds;

    bool public lockingPeriodEnforced;


    event MamStaked(address indexed, uint256, uint256);
    event MutantStaked(address indexed, uint256, uint256);
    event MamUnstaked(address indexed, uint256, uint256);
    event MutantUnstaked(address indexed, uint256, uint256);

    //mamids
    //legendary, top10% 

    //mutantids
    //only legendarys

    constructor(address _mam, address _mutant, address _token, uint256[] memory _legendaryMutantIds, uint256[] memory _topTenIds, uint256[] memory _legendaryIds)  {
        mam = IERC721Enumerable(_mam);
        mutant = IERC721Enumerable(_mutant);

        token = IERC20(_token);

        for(uint16 i; i < _legendaryMutantIds.length; i++) {
            legendaryMutantIds.push(_legendaryMutantIds[i]);
        }
        for(uint16 i; i < _topTenIds.length; i++) {
            topTenIds.push(_topTenIds[i]);
        }
        for(uint16 i; i < _legendaryIds.length; i++) {
            legendaryIds.push(_legendaryIds[i]);
        }

    }

    function onERC721Received(address, address, uint256, bytes calldata) external pure returns (bytes4) {
        return IERC721Receiver.onERC721Received.selector;
    }

    function mamStake(uint256 tokenId, uint256 _tier) external {
        mam.safeTransferFrom(msg.sender, address(this), tokenId);
        mamTokenOwnerOf[tokenId] = msg.sender;
        mamTier[tokenId] = _tier;
        mamTokenStakedAt[tokenId] = block.timestamp;
        numberMamStaked[msg.sender]++;
        
        for(uint16 i; i< topTenIds.length; i++) {
            if(tokenId == topTenIds[i]) {
                tMultiplier[tokenId] = true;
            }
        }
        for(uint16 i; i< legendaryIds.length; i++) {
            if(tokenId == legendaryIds[i]) {
                lMultiplier[tokenId] = true;
            }
        }
        
        totalStaked++;
        mamStaked++;
        emit MamStaked(msg.sender, tokenId, _tier);
    }

    function mutantStake(uint256 tokenId, uint256 _tier) external {
        mutant.safeTransferFrom(msg.sender, address(this), tokenId);
        mutantTokenOwnerOf[tokenId] = msg.sender;
        mutantTier[tokenId] = _tier;
        mutantTokenStakedAt[tokenId] = block.timestamp;
        numberMutantStaked[msg.sender]++;
        for(uint16 i; i< legendaryMutantIds.length; i++) {
            if(tokenId == legendaryMutantIds[i]) {
                mMultiplier[tokenId] = true;
            }
        }
        
        
        totalStaked++;
        mutantStaked++;
        emit MutantStaked(msg.sender, tokenId, _tier);
    }

    function calculateTime(uint256 tokenId, uint8 _type) public view returns (uint256) {
        uint256 timeElapsed;
        if(_type == 2) {
            timeElapsed = block.timestamp - mutantTokenStakedAt[tokenId];
        } else {
           timeElapsed = block.timestamp - mamTokenStakedAt[tokenId];
        }
    

    
        
        return timeElapsed;
        
    }


    function calculateMamTokens(uint256 tokenId) external view returns (uint256) {
        uint256 payout;
        uint256 selectedTier = mamTier[tokenId];
        uint256 time = calculateTime(tokenId, 1);
        //uint256 ratePS = dayRate.div(86400);
        

        if(selectedTier ==1) {
            

            if(lMultiplier[tokenId] == true) {
                payout = dayRate * time * 10;
            } else if(tMultiplier[tokenId] == true) {
                payout = dayRate * time * 4;
            } else {
                payout = dayRate * time / 2;
            } 
            
            
        } else if(selectedTier ==2) {
            
                if(lMultiplier[tokenId] == true) {
                payout = dayRate * time * 20;
            } else if(tMultiplier[tokenId] == true) {
                payout = dayRate * time * 8;
            }  else {
                payout = dayRate * time;
            }
        }
        uint256 totalPayout = payout *10**18;
            return totalPayout.div(86400);
            
        
       
    }

    function calculateMutantTokens(uint256 tokenId) external view returns (uint256) {
        uint256 payout;
        uint256 selectedTier = mutantTier[tokenId];
        uint256 time = calculateTime(tokenId, 2);
        //uint256 ratePS = dayRate.div(86400);
        

        if(selectedTier ==1) {
            

            if(mMultiplier[tokenId] == true) {
                payout = dayRate * time * 10;
            } else {
                payout = dayRate * time / 2;
            } 
            
            
        } else if(selectedTier ==2) {
            
                if(mMultiplier[tokenId] == true) {
                payout = dayRate * time * 20;
            } else {
                payout = dayRate * time;
            }
        }
        uint256 totalPayout = payout *10**18;
            return totalPayout.div(86400);
            
        
       
    }







    function unstakeMam(uint256 tokenId) external nonReentrant {
        require(mamTokenOwnerOf[tokenId] == msg.sender, "You can't unstake");
        uint256 time = calculateTime(tokenId, 1);
        
        uint256 payout;
        uint256 selectedTier = mamTier[tokenId];
        //uint256 ratePS = dayRate.div(86400);
        mam.transferFrom(address(this), msg.sender, tokenId);

        if(selectedTier ==1) {
            if(lockingPeriodEnforced) {
                require(time >= firsttier*86400, "Staking period has not ended");
            }
            

            if(lMultiplier[tokenId] == true) {
                payout = dayRate * time * 10;
            } else if(tMultiplier[tokenId] == true) {
                payout = dayRate * time * 4;
            }  else {
                payout = dayRate * time / 2;
            } 
        }
        
             else if(selectedTier ==2) {
                 if(lockingPeriodEnforced) {
                     require(time >= secondtier*86400, "Staking period has not ended");
                 }
            
                if(lMultiplier[tokenId] == true) {
                payout = dayRate * time * 20;
            } else if(tMultiplier[tokenId] == true) {
                payout = dayRate * time * 8;
            }  else {
                payout = dayRate * time;
            } 
             }
             else {
                revert("invalid tier selected");
            }
            uint256 totalPayout = payout *10**18;
            uint256 totalPayoutPS = totalPayout.div(86400);
            token.transfer(msg.sender, totalPayoutPS);
            delete mamTokenOwnerOf[tokenId];
            delete mamTier[tokenId];
        delete mamTokenStakedAt[tokenId];
        numberMamStaked[msg.sender]--;
        totalStaked--;
        mamStaked--;
        amountPaid+= totalPayoutPS;
        emit MamUnstaked(msg.sender, tokenId, totalPayoutPS);
        
        

        
        
       
    }

    function unstakeMutant(uint256 tokenId) external nonReentrant {
        require(mutantTokenOwnerOf[tokenId] == msg.sender, "You can't unstake");
        uint256 time = calculateTime(tokenId, 2);
        
        uint256 payout;
        uint256 selectedTier = mutantTier[tokenId];
        
        mutant.transferFrom(address(this), msg.sender, tokenId);

        if(selectedTier ==1) {
            if(lockingPeriodEnforced) {
                require(time >= firsttier*86400, "Staking period has not ended");
            }
            

            if(mMultiplier[tokenId] == true) {
                payout = dayRate * time * 10;
            }  else {
                payout = dayRate * time / 2;
            } 
        }
        
             else if(selectedTier ==2) {
                 if(lockingPeriodEnforced) {
                     require(time >= secondtier*86400, "Staking period has not ended");
                 }
            
                if(mMultiplier[tokenId] == true) {
                payout = dayRate * time * 20;
            } else {
                payout = dayRate * time;
            } 
             }
             else {
                revert("invalid tier selected");
            }

            uint256 totalPayout = payout *10**18;
            uint256 totalPayoutPS = totalPayout.div(86400);

            token.transfer(msg.sender, totalPayoutPS);
            delete mutantTokenOwnerOf[tokenId];
            delete mutantTier[tokenId];
        delete mutantTokenStakedAt[tokenId];
        numberMutantStaked[msg.sender]--;
        totalStaked--;
        mutantStaked--;
        amountPaid+=totalPayoutPS;

        emit MutantUnstaked(msg.sender, tokenId, totalPayoutPS);
    }
        
        

    function addmutantIds(uint256[] calldata _newIds) external onlyOwner {
        for(uint8 i; i<_newIds.length; i++) {
      legendaryMutantIds.push(_newIds[i]);
        }
  }

  function addTopTenIds(uint256[] calldata _newIds) external onlyOwner {
      for(uint8 i; i<_newIds.length; i++) {
      topTenIds.push(_newIds[i]);
      }
  }

  function addLegendaryIds(uint256[] calldata _newIds) external onlyOwner {
      for(uint8 i; i<_newIds.length; i++) {
      legendaryIds.push(_newIds[i]);
      }
  }

  function removeMutantIds(uint256[] memory _ids) external onlyOwner {
      for(uint8 i; i< _ids.length; i++) {
          for(uint8 j; j<legendaryMutantIds.length; j++) {
              if(_ids[i] == legendaryMutantIds[j]) {
                  delete legendaryMutantIds[j];
              }
          }
          
      }
  }

  function removeTopTenIds(uint256[] memory _ids) external onlyOwner {
      for(uint8 i; i< _ids.length; i++) {
          for(uint8 j; j<topTenIds.length; j++) {
              if(_ids[i] == topTenIds[j]) {
                  delete topTenIds[j];
              }
          }
          
      }
  }

  function removeLegendaryIds(uint256[] memory _ids) external onlyOwner {
      for(uint8 i; i< _ids.length; i++) {
          for(uint8 j; j<legendaryIds.length; j++) {
              if(_ids[i] == legendaryIds[j]) {
                  delete legendaryIds[j];
              }
          }
          
      }
  }



    

  
  function setNFTAddress(address _newMamToken, address _newMutantToken) external onlyOwner {
      mam = IERC721Enumerable(_newMamToken);
      mutant = IERC721Enumerable(_newMutantToken);
  }

  function setTokenAddress(address _newToken) external onlyOwner {
      token = IERC20(_newToken);
  }

  function setDayRate(uint256 _newRate) external onlyOwner {
      dayRate = _newRate;
  }

  function enforceLockingPeriod(bool _state) external onlyOwner {
      lockingPeriodEnforced = _state;
  }


    function setFirstTier(uint256 _time) external onlyOwner {
        firsttier = _time;
    }
    function setSecondTier(uint256 _time) external onlyOwner {
        secondtier = _time;
    }

    function getMamTier(uint256 _tokenId) external view returns (uint256){
      return mamTier[_tokenId];
  }
  function getMutantTier(uint256 _tokenId) external view returns (uint256){
      return mutantTier[_tokenId];
  }

  function getNumberMamStaked(address _owner) external view returns (uint256){
      return numberMamStaked[_owner];
  }

  function getNumberMutantStaked(address _owner) external view returns (uint256){
      return numberMutantStaked[_owner];
  }

  function getMamStartDate(uint256 _tokenId) external view returns (uint256){
      return mamTokenStakedAt[_tokenId];
  }

  function getMutantStartDate(uint256 _tokenId) external view returns (uint256){
      return mutantTokenStakedAt[_tokenId];
  }

  function getMamTokenOwner(uint256 _tokenId) external view returns (address){
      return mamTokenOwnerOf[_tokenId];
  }

  function getMutantTokenOwner(uint256 _tokenId) external view returns (address){
      return mutantTokenOwnerOf[_tokenId];
  }

    function emergencyTokenWithdraw() external onlyOwner {
        uint256 balance = token.balanceOf(address(this));
        token.transfer(msg.sender, balance );
    }

    //This is to remove the native currency of the network (e.g. ETH, BNB, MATIC, etc.)
    function emergencyWithdraw() public onlyOwner nonReentrant {
        // This will payout the owner the contract balance.
        // Do not remove this otherwise you will not be able to withdraw the funds.
        // =============================================================================
        (bool os, ) = payable(owner()).call{value: address(this).balance}("");
        require(os);
        // =============================================================================
    }

     receive() external payable {}
    


   
}