//     ______          __    __                          
//    / ____/___ ___  / /_  / /__  ____ ___              
//   / __/ / __ `__ \/ __ \/ / _ \/ __ `__ \             
//  / /___/ / / / / / /_/ / /  __/ / / / / /             
// /_____/_/ /_/ /_/_.___/_/\___/_/ /_/ /_/              
// | |  / /___ ___  __/ / /_                             
// | | / / __ `/ / / / / __/                             
// | |/ / /_/ / /_/ / / /_                               
// |___/\__,_/\__,_/_/\__/                               
//     __  __                ____                   ____ 
//    / / / /___ _____  ____/ / /__  _____   _   __( __ )
//   / /_/ / __ `/ __ \/ __  / / _ \/ ___/  | | / / __  |
//  / __  / /_/ / / / / /_/ / /  __/ /      | |/ / /_/ / 
// /_/ /_/\__,_/_/ /_/\__,_/_/\___/_/       |___/\____/  

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.4;

import "./BasicERC20.sol";
import "./IIsSerialized.sol";
import "./SafeMath.sol";
import "./IERC721.sol";
import "./IERC165.sol";
import "./IERC1155.sol";
import "./IClaimed.sol";
import "./ERC165.sol";
import "./ReentrancyGuard.sol";
import "./HasCallbacks.sol";
import "./BytesLib.sol";

contract VaultHandlerV8 is ReentrancyGuard, HasCallbacks, ERC165 {
    
    using SafeMath for uint256;
    string public metadataBaseUri = "https://api.emblemvault.io/s:evmetadata/meta/";
    bool public initialized;
    address public recipientAddress;

    bytes4 private constant _INTERFACE_ID_ERC1155 = 0xd9b67a26;
    bytes4 private constant _INTERFACE_ID_ERC20 = 0x74a1476f;
    bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd;
    bool public shouldBurn = false;
    
    mapping(address => bool) public witnesses;
    mapping(uint256 => bool) usedNonces;

    // constructor() {
    //     __Ownable_init();
    // }

    function initialize() public initializer {
        __Ownable_init();
        addWitness(owner());
        recipientAddress = _msgSender();
        initialized = true;
        initializeERC165();
    }

    function claim(address _nftAddress, uint256 tokenId) public nonReentrant isRegisteredContract(_nftAddress) {
        IClaimed claimer = IClaimed(registeredOfType[6][0]);
        bytes32[] memory proof;
        
        if (IERC165(_nftAddress).supportsInterface(_INTERFACE_ID_ERC1155)) {
            IIsSerialized serialized = IIsSerialized(_nftAddress);
            uint256 serialNumber = serialized.getFirstSerialByOwner(_msgSender(), tokenId);
            require(serialized.getTokenIdForSerialNumber(serialNumber) == tokenId, "Invalid tokenId serialnumber combination");
            require(serialized.getOwnerOfSerial(serialNumber) == _msgSender(), "Not owner of serial number");
            require(!claimer.isClaimed(_nftAddress, serialNumber, proof), "Already Claimed");
            IERC1155(_nftAddress).burn(_msgSender(), tokenId, 1);
            claimer.claim(_nftAddress, serialNumber, _msgSender());
        } else {            
            require(!claimer.isClaimed(_nftAddress, tokenId, proof), "Already Claimed");
            IERC721 token = IERC721(_nftAddress);
            require(token.ownerOf(tokenId) == _msgSender(), "Not Token Owner");
            token.burn(tokenId);
            claimer.claim(_nftAddress, tokenId, _msgSender());
        }
        executeCallbacksInternal(_nftAddress, _msgSender(), address(0), tokenId, IHandlerCallback.CallbackType.CLAIM);
    }

    function buyWithSignedPrice(address _nftAddress, address _payment, uint _price, address _to, uint256 _tokenId, string calldata _payload, uint256 _nonce, bytes calldata _signature, bytes calldata serialNumber) public nonReentrant {
        IERC20Token paymentToken = IERC20Token(_payment);
        if (shouldBurn) {
            require(paymentToken.transferFrom(msg.sender, address(this), _price), 'Transfer ERROR'); // Payment sent to recipient
            BasicERC20(_payment).burn(_price);
        } else {
            require(paymentToken.transferFrom(msg.sender, address(recipientAddress), _price), 'Transfer ERROR'); // Payment sent to recipient
        }
        address signer = getAddressFromSignature(_nftAddress, _payment, _price, _to, _tokenId, _nonce, _payload, _signature);
        require(witnesses[signer], 'Not Witnessed');
        usedNonces[_nonce] = true;
        string memory _uri = concat(metadataBaseUri, uintToStr(_tokenId));
        if (IERC165(_nftAddress).supportsInterface(_INTERFACE_ID_ERC1155)) {
            if (IIsSerialized(_nftAddress).isOverloadSerial()) {
                IERC1155(_nftAddress).mintWithSerial(_to, _tokenId, 1, serialNumber);
            } else {
                IERC1155(_nftAddress).mint(_to, _tokenId, 1);
            }            
        } else {
            IERC721(_nftAddress).mint(_to, _tokenId, _uri, _payload);
        }
    }

    function mint(address _nftAddress, address _to, uint256 _tokenId, string calldata _uri, string calldata _payload, uint256 amount) external onlyOwner {
        if (IERC165(_nftAddress).supportsInterface(_INTERFACE_ID_ERC1155)) {
            IERC1155(_nftAddress).mint(_to, _tokenId, amount);
        } else {
            IERC721(_nftAddress).mint(_to, _tokenId, _uri, _payload);
        }        
    }

    function mintBatch(address _nftAddress, address to, uint256[] memory ids, uint256[] memory amounts, bytes[] memory serialNumbers) public onlyOwner {
        if (IERC165(_nftAddress).supportsInterface(_INTERFACE_ID_ERC1155)) {
            IERC1155(_nftAddress).mintBatch(to, ids, amounts, serialNumbers);
        } else {
           
        }        
    }

    function moveVault(address _from, address _to, uint256 tokenId, uint256 newTokenId, uint256 nonce, bytes calldata signature, bytes memory serialNumber) external nonReentrant isRegisteredContract(_from) isRegisteredContract(_to)  {
        require(_from != _to, 'Cannot move vault to same address');
        require(witnesses[getAddressFromSignatureHash(keccak256(abi.encodePacked(_from, _to, tokenId, newTokenId, serialNumber, nonce)), signature)], 'Not Witnessed');
        usedNonces[nonce] = true;
        if (IERC165(_from).supportsInterface(_INTERFACE_ID_ERC1155)) {
            require(tokenId != newTokenId, 'from: TokenIds must be different for ERC1155');
            require(IERC1155(_from).balanceOf(_msgSender(), tokenId) > 0, 'from: Not owner of vault');
            IERC1155(_from).burn(_msgSender(), tokenId, 1);
        } else {
            require(IERC721(_from).ownerOf(tokenId) == _msgSender(), 'from: Not owner of vault');
            IERC721(_from).burn(tokenId);
        }
        if (IERC165(_to).supportsInterface(_INTERFACE_ID_ERC1155)) {
            require(tokenId != newTokenId, 'to: TokenIds must be different for ERC1155');
            if (IIsSerialized(_to).isOverloadSerial()) {
                require(BytesLib.toUint256(serialNumber, 0) != 0, "Handler: must provide serial number");
                IERC1155(_to).mintWithSerial(_msgSender(), newTokenId, 1, serialNumber);
            } else {
                IERC1155(_to).mint(_msgSender(), newTokenId, 1);
            }
        } else {
             IERC721(_to).mint(_msgSender(), newTokenId, concat(metadataBaseUri, uintToStr(newTokenId)), "");
        }
    }  
    
    function toggleShouldBurn() public onlyOwner {
        shouldBurn = !shouldBurn;
    }
    
    function addWitness(address _witness) public onlyOwner {
        witnesses[_witness] = true;
    }

    function removeWitness(address _witness) public onlyOwner {
        witnesses[_witness] = false;
    }

    function getAddressFromSignatureHash(bytes32 _hash, bytes calldata signature) public pure returns (address) {
        address addressFromSig = recoverSigner(_hash, signature);
        return addressFromSig;
    }

    function getAddressFromSignature(address _nftAddress, address _payment, uint _price, address _to, uint256 _tokenId, uint256 _nonce, string calldata _payload, bytes calldata signature) public view returns (address) {
        require(!usedNonces[_nonce], 'Nonce already used');
        return getAddressFromSignatureHash(keccak256(abi.encodePacked(_nftAddress, _payment, _price, _to, _tokenId, _nonce, _payload)), signature);
    }

    function getAddressFromSignature(address _to, uint256 _tokenId, uint256 _nonce, bytes calldata signature) public view returns (address) {
        require(!usedNonces[_nonce], 'Nonce already used');
        return getAddressFromSignatureHash(keccak256(abi.encodePacked(_to, _tokenId, _nonce)), signature);
    }

    function getAddressFromSignatureMint(address _nftAddress, address _to, uint256 _tokenId, uint256 _nonce, string calldata payload, bytes calldata signature) public view returns (address) {
        require(!usedNonces[_nonce]);
        return getAddressFromSignatureHash(keccak256(abi.encodePacked(_nftAddress, _to, _tokenId, _nonce, payload)), signature);
    }

    function getAddressFromSignatureMove(address _from, address _to, uint256 tokenId, uint256 newTokenId, uint256 _nonce, bytes memory serialNumber, bytes calldata signature) public view returns (address) {
        require(!usedNonces[_nonce]);
        return getAddressFromSignatureHash(keccak256(abi.encodePacked(_from, _to, tokenId, newTokenId, serialNumber, _nonce)), signature);
    }

    function isWitnessed(bytes32 _hash, bytes calldata signature) public view returns (bool) {
        address addressFromSig = recoverSigner(_hash, signature);
        return witnesses[addressFromSig];
    }
    
    function changeMetadataBaseUri(string calldata _uri) public onlyOwner {
        metadataBaseUri = _uri;
    }
    
    function transferNftOwnership(address _nftAddress, address newOwner) external onlyOwner {
        OwnableUpgradeable(_nftAddress).transferOwnership(newOwner);
    }

    function changeRecipient(address _recipient) public onlyOwner {
       recipientAddress = _recipient;
    }
    function concat(string memory a, string memory b) internal pure returns (string memory) {
        return string(abi.encodePacked(a, b));
    }

    function recoverSigner(bytes32 hash, bytes memory sig) public pure returns (address) {
        require(sig.length == 65, "Require correct length");

        bytes32 r;
        bytes32 s;
        uint8 v;

        // Divide the signature in r, s and v variables
        assembly {
            r := mload(add(sig, 32))
            s := mload(add(sig, 64))
            v := byte(0, mload(add(sig, 96)))
        }

        // Version of signature should be 27 or 28, but 0 and 1 are also possible versions
        if (v < 27) {
            v += 27;
        }

        require(v == 27 || v == 28, "Signature version not match");

        return recoverSigner2(hash, v, r, s);
    }
    function recoverSigner2(bytes32 h, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
        bytes memory prefix = "\x19Ethereum Signed Message:\n32";
        bytes32 prefixedHash = keccak256(abi.encodePacked(prefix, h));
        address addr = ecrecover(prefixedHash, v, r, s);

        return addr;
    }
    
    function uintToStr(uint _i) internal pure returns (string memory _uintAsString) {
        if (_i == 0) {
            return "0";
        }
        uint j = _i;
        uint len;
        while (j != 0) {
            len++;
            j /= 10;
        }
        bytes memory bstr = new bytes(len);
        uint k = len;
        while (_i != 0) {
            k = k-1;
            uint8 temp = (48 + uint8(_i - _i / 10 * 10));
            bytes1 b1 = bytes1(temp);
            bstr[k] = b1;
            _i /= 10;
        }
        return string(bstr);
    }
    // function toString(address account) public pure returns(string memory) {
    //     return toString(abi.encodePacked(account));
    // }    
    // function toString(uint256 value) public pure returns(string memory) {
    //     return toString(abi.encodePacked(value));
    // }    
    // function toString(bytes32 value) public pure returns(string memory) {
    //     return toString(abi.encodePacked(value));
    // }    
    // function toString(bytes memory data) public pure returns(string memory) {
    //     bytes memory alphabet = "0123456789abcdef";
    
    //     bytes memory str = new bytes(2 + data.length * 2);
    //     str[0] = "0";
    //     str[1] = "x";
    //     for (uint i = 0; i < data.length; i++) {
    //         str[2+i*2] = alphabet[uint(uint8(data[i] >> 4))];
    //         str[3+i*2] = alphabet[uint(uint8(data[i] & 0x0f))];
    //     }
    //     return string(str);
    // }
}

// SPDX-License-Identifier: CLOSED - Pending Licensing Audit
pragma solidity ^0.8.4;
interface IIsSerialized {
    function isSerialized() external view returns (bool);
    function getSerial(uint256 tokenId, uint256 index) external view returns (uint256);
    function getFirstSerialByOwner(address owner, uint256 tokenId) external view returns (uint256);
    function getOwnerOfSerial(uint256 serialNumber) external view returns (address);
    function getSerialByOwnerAtIndex(address _owner, uint256 tokenId, uint256 index) external view returns (uint256);
    function getTokenIdForSerialNumber(uint256 serialNumber) external view returns (uint256);
    function isOverloadSerial() external view returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
interface BasicERC20 {
    function burn(uint256 value) external;
    function mint(address account, uint256 amount) external;
    function decimals() external view returns (uint8);
    function transferFrom(address from, address to, uint256 value) external returns (bool);
    function totalSupply() external view returns (uint256);
    function balanceOf(address who) external view returns (uint256);
    function allowance(address owner, address spender) external view returns (uint256);
}
interface IERC20Token {
    function transfer(address to, uint256 value) external returns (bool);
    function approve(address spender, uint256 value) external returns (bool);
    function transferFrom(address from, address to, uint256 value) external returns (bool);
    function totalSupply() external view returns (uint256);
    function balanceOf(address who) external view returns (uint256);
    function allowance(address owner, address spender) external view returns (uint256);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
interface IERC721 {
    function burn(uint256 tokenId) external;
    function transferFrom(address from, address to, uint256 tokenId) external;
    function mint( address _to, uint256 _tokenId, string calldata _uri, string calldata _payload) external;
    function changeName(string calldata name, string calldata symbol) external;
    function updateTokenUri(uint256 _tokenId,string memory _uri) external;
    function tokenPayload(uint256 _tokenId) external view returns (string memory);
    function ownerOf(uint256 _tokenId) external view returns (address _owner);
    function getApproved(uint256 _tokenId) external returns (address);
    function safeTransferFrom(address _from, address _to, uint256 _tokenId) external;
    function safeTransferFrom(address _from, address _to, uint256 _tokenId, bytes calldata data) external;
    function totalSupply() external view returns (uint256);
    function tokenOfOwnerByIndex(address _owner, uint256 _index) external view returns (uint256);
    function tokenByIndex(uint256 _index) external view returns (uint256);
    function balanceOf(address account, uint256 id) external view returns (uint256);
    function isApprovedForAll(address _owner, address _operator) external view returns (bool);
    function setApprovalForAll( address _operator, bool _approved) external;

}

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
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 `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
interface IERC165 {
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: CLOSED - Pending Licensing Audit
pragma solidity ^0.8.4;
import "./HasRegistration.sol";
import "./IHandlerCallback.sol";

contract HasCallbacks is HasRegistration {

    bool allowCallbacks = true;
    
    event CallbackExecuted(address _from, address _to, address target, uint256 tokenId, bytes4 targetFunction, IHandlerCallback.CallbackType _type, bytes returnData);
    event CallbackReverted(address _from, address _to, address target, uint256 tokenId, bytes4 targetFunction, IHandlerCallback.CallbackType _type);
    event CallbackFailed(address _from, address _to, address target, uint256 tokenId, bytes4 targetFunction, IHandlerCallback.CallbackType _type);
    
    mapping(address => mapping(uint256 => mapping(IHandlerCallback.CallbackType => IHandlerCallback.Callback[]))) public registeredCallbacks;
    mapping(address => mapping(IHandlerCallback.CallbackType => IHandlerCallback.Callback[])) public registeredWildcardCallbacks;    

    modifier isOwnerOrCallbackRegistrant(address _contract, address target, uint256 tokenId, IHandlerCallback.CallbackType _type, uint256 index) {
        bool registrant = false;
        if (hasTokenIdCallback(_contract, target, tokenId, _type)) {
            registrant = registeredCallbacks[_contract][tokenId][_type][index].registrant == _msgSender();
        } else if(hasWildcardCallback(_contract, target, _type)) {
           registrant = registeredWildcardCallbacks[_contract][_type][index].registrant == _msgSender();
        }        
        require(_msgSender() == owner() || registrant, "Not owner or Callback registrant");
        _;
    }

    function executeCallbacks(address _from, address _to, uint256 tokenId, IHandlerCallback.CallbackType _type) public isRegisteredContract(_msgSender()) {
        if (allowCallbacks) {
            IHandlerCallback.Callback[] memory callbacks = registeredCallbacks[_msgSender()][tokenId][_type];
            if (callbacks.length > 0) executeCallbackLoop(callbacks, _from, _to, tokenId, _type);
            IHandlerCallback.Callback[] memory wildCardCallbacks = registeredWildcardCallbacks[_msgSender()][_type];
            if (wildCardCallbacks.length > 0) executeCallbackLoop(wildCardCallbacks, _from, _to, tokenId, _type);
        }
    }

    function executeCallbacksInternal(address _nftAddress, address _from, address _to, uint256 tokenId, IHandlerCallback.CallbackType _type) internal isRegisteredContract(_nftAddress) {
         if (allowCallbacks) {
            IHandlerCallback.Callback[] memory callbacks = registeredCallbacks[_nftAddress][tokenId][_type];
            if (callbacks.length > 0) executeCallbackLoop(callbacks, _from, _to, tokenId, _type);
            IHandlerCallback.Callback[] memory wildCardCallbacks = registeredWildcardCallbacks[_nftAddress][_type];
            if (wildCardCallbacks.length > 0) executeCallbackLoop(wildCardCallbacks, _from, _to, tokenId, _type);
         }
    }

    function executeCallbackLoop(IHandlerCallback.Callback[] memory callbacks, address _from, address _to, uint256 tokenId, IHandlerCallback.CallbackType _type) internal {
        bool canRevert = false;  
        for (uint256 i = 0; i < callbacks.length; ++i) {            
            IHandlerCallback.Callback memory cb = callbacks[i];    
            canRevert = cb.canRevert;
            if (cb.target != address(0)){
                (bool success, bytes memory returnData) =
                    address(cb.target).call(
                        abi.encodePacked(
                            cb.targetFunction,
                            abi.encode(_from),
                            abi.encode(_to),
                            abi.encode(tokenId)
                        )
                    );
                if (success) {
                    emit CallbackExecuted(_from, _to, cb.target, tokenId, cb.targetFunction, _type, returnData);
                } else if (canRevert) {
                    emit CallbackReverted(_from, _to, cb.target, tokenId, cb.targetFunction, _type);
                    revert("Callback Reverted");
                } else {
                    emit CallbackFailed(_from, _to, cb.target, tokenId, cb.targetFunction, _type);
                }
            }
        }
    }

    function toggleAllowCallbacks() public onlyOwner {
        allowCallbacks = !allowCallbacks;
    }

    function registerCallback(address _contract, address target, uint256 tokenId, IHandlerCallback.CallbackType _type, bytes4 _function, bool allowRevert) isRegisteredContract(_contract) onlyOwner public {
        registeredCallbacks[_contract][tokenId][_type].push(IHandlerCallback.Callback(_contract, _msgSender(), target, _function, allowRevert ));
    }

    function registerWildcardCallback(address _contract, address target, IHandlerCallback.CallbackType _type, bytes4 _function, bool allowRevert) isRegisteredContract(_contract) onlyOwner public {
        registeredWildcardCallbacks[_contract][_type].push(IHandlerCallback.Callback(_contract, _msgSender(), target, _function, allowRevert ));
    }

    function hasCallback(address _contract, address target, uint256 tokenId, IHandlerCallback.CallbackType _type) public view returns (bool ) {
        bool found = hasTokenIdCallback(_contract, target, tokenId, _type);
        if (found) return true;
        return hasWildcardCallback(_contract, target, _type);
    }

    function hasTokenIdCallback(address _contract, address target, uint256 tokenId, IHandlerCallback.CallbackType _type) internal view returns(bool) {
        bool found = false;
        IHandlerCallback.Callback[] memory callbacks = registeredCallbacks[_contract][tokenId][_type];
        for (uint256 i = 0; i < callbacks.length; ++i) {
            if (callbacks[i].target == target) {
                found = true;
            }
        }
        return found;
    }

    function hasWildcardCallback(address _contract, address target, IHandlerCallback.CallbackType _type) internal view returns(bool) {
        bool found = false;
        IHandlerCallback.Callback[] memory callbacks = registeredWildcardCallbacks[_contract][_type];
        for (uint256 i = 0; i < callbacks.length; ++i) {
            if (callbacks[i].target == target) {
                found = true;
            }
        }
        return found;
    }

    function unregisterCallback(address _contract, address target, uint256 tokenId, IHandlerCallback.CallbackType _type, uint256 index) public isOwnerOrCallbackRegistrant(_contract, target, tokenId, _type, index){
        if (hasTokenIdCallback(_contract, target, tokenId, _type)) {
            IHandlerCallback.Callback[] storage arr = registeredCallbacks[_contract][tokenId][_type];
            arr[index] = arr[arr.length - 1];
            arr.pop();
            // delete registeredCallbacks[_contract][tokenId][_type][index];
        }
        else if(hasWildcardCallback(_contract, target, _type)) {
            IHandlerCallback.Callback[] storage arr = registeredWildcardCallbacks[_contract][_type];
            arr[index] = arr[arr.length - 1];
            arr.pop();
            // delete registeredWildcardCallbacks[_contract][_type][index];
        }
    }

    uint256 public ticks = 0;
    uint256 public lastTokenId = 0;
    address public lastTo;
    address public lastFrom;
    address public lastContract;

    function testCallback(address _from, address _to, uint256 tokenId) public {
        ticks++;
        lastTokenId = tokenId;
        lastTo = _to;
        lastFrom = _from;  
        lastContract = _msgSender();
    }

    function testRevertCallback(address _from, address _to, uint256 tokenId) public pure {
        _from = address(0);
        _to = address(0);
        tokenId = 0;
        revert("reverted by design");
    }

    function getTestSelector() public view returns (bytes4) {
        return HasCallbacks(this).testCallback.selector;
    }

    function getTestRevertSelector() public view returns (bytes4) {
        return HasCallbacks(this).testRevertCallback.selector;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

interface IERC1155 {
    event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);
    event TransferBatch(address indexed operator, address indexed from, address indexed to, uint256[] ids, uint256[] values);
    event ApprovalForAll(address indexed account, address indexed operator, bool approved);
    event URI(string value, uint256 indexed id);

    function balanceOf(address account, uint256 id) external view returns (uint256);
    function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids) external view returns (uint256[] memory);
    function setApprovalForAll(address operator, bool approved) external;
    function isApprovedForAll(address account, address operator) external view returns (bool);
    function safeTransferFrom(address from, address to, uint256 id, uint256 amount, bytes calldata data) external;
    function safeBatchTransferFrom(address from, address to, uint256[] calldata ids, uint256[] calldata amounts, bytes calldata data) external;
    function mint(address _to, uint256 _tokenId, uint256 _amount) external;
    function mintBatch(address to, uint256[] memory ids, uint256[] memory amounts, bytes[] memory serialNumbers) external;
    function burn(address _from, uint256 _tokenId, uint256 _amount) external;
    function mintWithSerial(address _to, uint256 _tokenId, uint256 _amount, bytes memory serialNumber) external;
}

interface IERC1155Receiver {
    function onERC1155Received(address operator, address from, uint256 id, uint256 value, bytes calldata data) external returns(bytes4);
    function onERC1155BatchReceived(address operator, address from, uint256[] calldata ids, uint256[] calldata values, bytes calldata data) external returns(bytes4);
}

interface IERC1155MetadataURI  {
    function uri(uint256 id) external view returns (string memory);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor ()  {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// SPDX-License-Identifier: CLOSED - Pending Licensing Audit
pragma solidity ^0.8.4;

contract ERC165 {

    mapping(bytes4 => bool) private supportedInterfaces;

    function initializeERC165() internal {
        require(supportedInterfaces[0x01ffc9a7] == false, "Already Registered");
        _registerInterface(0x01ffc9a7);
    }
    
    function supportsInterface(bytes4 interfaceId) public view returns (bool) {
        return supportedInterfaces[interfaceId];
    }
    
    function _registerInterface(bytes4 interfaceId) internal {
        require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
        supportedInterfaces[interfaceId] = true;
    }
}

// interface IERC1155Receiver {
//     function onERC1155Received(address operator, address from, uint256 id, uint256 value, bytes calldata data) external returns(bytes4);
//     function onERC1155BatchReceived(address operator, address from, uint256[] calldata ids, uint256[] calldata values, bytes calldata data) external returns(bytes4);
// }

// interface IERC1155MetadataURI  {
//     function uri(uint256 id) external view returns (string memory);
// }

// SPDX-License-Identifier: Unlicense
/*
 * @title Solidity Bytes Arrays Utils
 * @author Gonçalo Sá <[email protected]>
 *
 * @dev Bytes tightly packed arrays utility library for ethereum contracts written in Solidity.
 *      The library lets you concatenate, slice and type cast bytes arrays both in memory and storage.
 */
pragma solidity >=0.8.0 <0.9.0;


library BytesLib {
    function concat(
        bytes memory _preBytes,
        bytes memory _postBytes
    )
        internal
        pure
        returns (bytes memory)
    {
        bytes memory tempBytes;

        assembly {
            // Get a location of some free memory and store it in tempBytes as
            // Solidity does for memory variables.
            tempBytes := mload(0x40)

            // Store the length of the first bytes array at the beginning of
            // the memory for tempBytes.
            let length := mload(_preBytes)
            mstore(tempBytes, length)

            // Maintain a memory counter for the current write location in the
            // temp bytes array by adding the 32 bytes for the array length to
            // the starting location.
            let mc := add(tempBytes, 0x20)
            // Stop copying when the memory counter reaches the length of the
            // first bytes array.
            let end := add(mc, length)

            for {
                // Initialize a copy counter to the start of the _preBytes data,
                // 32 bytes into its memory.
                let cc := add(_preBytes, 0x20)
            } lt(mc, end) {
                // Increase both counters by 32 bytes each iteration.
                mc := add(mc, 0x20)
                cc := add(cc, 0x20)
            } {
                // Write the _preBytes data into the tempBytes memory 32 bytes
                // at a time.
                mstore(mc, mload(cc))
            }

            // Add the length of _postBytes to the current length of tempBytes
            // and store it as the new length in the first 32 bytes of the
            // tempBytes memory.
            length := mload(_postBytes)
            mstore(tempBytes, add(length, mload(tempBytes)))

            // Move the memory counter back from a multiple of 0x20 to the
            // actual end of the _preBytes data.
            mc := end
            // Stop copying when the memory counter reaches the new combined
            // length of the arrays.
            end := add(mc, length)

            for {
                let cc := add(_postBytes, 0x20)
            } lt(mc, end) {
                mc := add(mc, 0x20)
                cc := add(cc, 0x20)
            } {
                mstore(mc, mload(cc))
            }

            // Update the free-memory pointer by padding our last write location
            // to 32 bytes: add 31 bytes to the end of tempBytes to move to the
            // next 32 byte block, then round down to the nearest multiple of
            // 32. If the sum of the length of the two arrays is zero then add
            // one before rounding down to leave a blank 32 bytes (the length block with 0).
            mstore(0x40, and(
              add(add(end, iszero(add(length, mload(_preBytes)))), 31),
              not(31) // Round down to the nearest 32 bytes.
            ))
        }

        return tempBytes;
    }

    function concatStorage(bytes storage _preBytes, bytes memory _postBytes) internal {
        assembly {
            // Read the first 32 bytes of _preBytes storage, which is the length
            // of the array. (We don't need to use the offset into the slot
            // because arrays use the entire slot.)
            let fslot := sload(_preBytes.slot)
            // Arrays of 31 bytes or less have an even value in their slot,
            // while longer arrays have an odd value. The actual length is
            // the slot divided by two for odd values, and the lowest order
            // byte divided by two for even values.
            // If the slot is even, bitwise and the slot with 255 and divide by
            // two to get the length. If the slot is odd, bitwise and the slot
            // with -1 and divide by two.
            let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2)
            let mlength := mload(_postBytes)
            let newlength := add(slength, mlength)
            // slength can contain both the length and contents of the array
            // if length < 32 bytes so let's prepare for that
            // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage
            switch add(lt(slength, 32), lt(newlength, 32))
            case 2 {
                // Since the new array still fits in the slot, we just need to
                // update the contents of the slot.
                // uint256(bytes_storage) = uint256(bytes_storage) + uint256(bytes_memory) + new_length
                sstore(
                    _preBytes.slot,
                    // all the modifications to the slot are inside this
                    // next block
                    add(
                        // we can just add to the slot contents because the
                        // bytes we want to change are the LSBs
                        fslot,
                        add(
                            mul(
                                div(
                                    // load the bytes from memory
                                    mload(add(_postBytes, 0x20)),
                                    // zero all bytes to the right
                                    exp(0x100, sub(32, mlength))
                                ),
                                // and now shift left the number of bytes to
                                // leave space for the length in the slot
                                exp(0x100, sub(32, newlength))
                            ),
                            // increase length by the double of the memory
                            // bytes length
                            mul(mlength, 2)
                        )
                    )
                )
            }
            case 1 {
                // The stored value fits in the slot, but the combined value
                // will exceed it.
                // get the keccak hash to get the contents of the array
                mstore(0x0, _preBytes.slot)
                let sc := add(keccak256(0x0, 0x20), div(slength, 32))

                // save new length
                sstore(_preBytes.slot, add(mul(newlength, 2), 1))

                // The contents of the _postBytes array start 32 bytes into
                // the structure. Our first read should obtain the `submod`
                // bytes that can fit into the unused space in the last word
                // of the stored array. To get this, we read 32 bytes starting
                // from `submod`, so the data we read overlaps with the array
                // contents by `submod` bytes. Masking the lowest-order
                // `submod` bytes allows us to add that value directly to the
                // stored value.

                let submod := sub(32, slength)
                let mc := add(_postBytes, submod)
                let end := add(_postBytes, mlength)
                let mask := sub(exp(0x100, submod), 1)

                sstore(
                    sc,
                    add(
                        and(
                            fslot,
                            0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff00
                        ),
                        and(mload(mc), mask)
                    )
                )

                for {
                    mc := add(mc, 0x20)
                    sc := add(sc, 1)
                } lt(mc, end) {
                    sc := add(sc, 1)
                    mc := add(mc, 0x20)
                } {
                    sstore(sc, mload(mc))
                }

                mask := exp(0x100, sub(mc, end))

                sstore(sc, mul(div(mload(mc), mask), mask))
            }
            default {
                // get the keccak hash to get the contents of the array
                mstore(0x0, _preBytes.slot)
                // Start copying to the last used word of the stored array.
                let sc := add(keccak256(0x0, 0x20), div(slength, 32))

                // save new length
                sstore(_preBytes.slot, add(mul(newlength, 2), 1))

                // Copy over the first `submod` bytes of the new data as in
                // case 1 above.
                let slengthmod := mod(slength, 32)
                let mlengthmod := mod(mlength, 32)
                let submod := sub(32, slengthmod)
                let mc := add(_postBytes, submod)
                let end := add(_postBytes, mlength)
                let mask := sub(exp(0x100, submod), 1)

                sstore(sc, add(sload(sc), and(mload(mc), mask)))

                for {
                    sc := add(sc, 1)
                    mc := add(mc, 0x20)
                } lt(mc, end) {
                    sc := add(sc, 1)
                    mc := add(mc, 0x20)
                } {
                    sstore(sc, mload(mc))
                }

                mask := exp(0x100, sub(mc, end))

                sstore(sc, mul(div(mload(mc), mask), mask))
            }
        }
    }

    function slice(
        bytes memory _bytes,
        uint256 _start,
        uint256 _length
    )
        internal
        pure
        returns (bytes memory)
    {
        require(_length + 31 >= _length, "slice_overflow");
        require(_bytes.length >= _start + _length, "slice_outOfBounds");

        bytes memory tempBytes;

        assembly {
            switch iszero(_length)
            case 0 {
                // Get a location of some free memory and store it in tempBytes as
                // Solidity does for memory variables.
                tempBytes := mload(0x40)

                // The first word of the slice result is potentially a partial
                // word read from the original array. To read it, we calculate
                // the length of that partial word and start copying that many
                // bytes into the array. The first word we copy will start with
                // data we don't care about, but the last `lengthmod` bytes will
                // land at the beginning of the contents of the new array. When
                // we're done copying, we overwrite the full first word with
                // the actual length of the slice.
                let lengthmod := and(_length, 31)

                // The multiplication in the next line is necessary
                // because when slicing multiples of 32 bytes (lengthmod == 0)
                // the following copy loop was copying the origin's length
                // and then ending prematurely not copying everything it should.
                let mc := add(add(tempBytes, lengthmod), mul(0x20, iszero(lengthmod)))
                let end := add(mc, _length)

                for {
                    // The multiplication in the next line has the same exact purpose
                    // as the one above.
                    let cc := add(add(add(_bytes, lengthmod), mul(0x20, iszero(lengthmod))), _start)
                } lt(mc, end) {
                    mc := add(mc, 0x20)
                    cc := add(cc, 0x20)
                } {
                    mstore(mc, mload(cc))
                }

                mstore(tempBytes, _length)

                //update free-memory pointer
                //allocating the array padded to 32 bytes like the compiler does now
                mstore(0x40, and(add(mc, 31), not(31)))
            }
            //if we want a zero-length slice let's just return a zero-length array
            default {
                tempBytes := mload(0x40)
                //zero out the 32 bytes slice we are about to return
                //we need to do it because Solidity does not garbage collect
                mstore(tempBytes, 0)

                mstore(0x40, add(tempBytes, 0x20))
            }
        }

        return tempBytes;
    }

    function toAddress(bytes memory _bytes, uint256 _start) internal pure returns (address) {
        require(_bytes.length >= _start + 20, "toAddress_outOfBounds");
        address tempAddress;

        assembly {
            tempAddress := div(mload(add(add(_bytes, 0x20), _start)), 0x1000000000000000000000000)
        }

        return tempAddress;
    }

    function toUint8(bytes memory _bytes, uint256 _start) internal pure returns (uint8) {
        require(_bytes.length >= _start + 1 , "toUint8_outOfBounds");
        uint8 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x1), _start))
        }

        return tempUint;
    }

    function toUint16(bytes memory _bytes, uint256 _start) internal pure returns (uint16) {
        require(_bytes.length >= _start + 2, "toUint16_outOfBounds");
        uint16 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x2), _start))
        }

        return tempUint;
    }

    function toUint32(bytes memory _bytes, uint256 _start) internal pure returns (uint32) {
        require(_bytes.length >= _start + 4, "toUint32_outOfBounds");
        uint32 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x4), _start))
        }

        return tempUint;
    }

    function toUint64(bytes memory _bytes, uint256 _start) internal pure returns (uint64) {
        require(_bytes.length >= _start + 8, "toUint64_outOfBounds");
        uint64 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x8), _start))
        }

        return tempUint;
    }

    function toUint96(bytes memory _bytes, uint256 _start) internal pure returns (uint96) {
        require(_bytes.length >= _start + 12, "toUint96_outOfBounds");
        uint96 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0xc), _start))
        }

        return tempUint;
    }

    function toUint128(bytes memory _bytes, uint256 _start) internal pure returns (uint128) {
        require(_bytes.length >= _start + 16, "toUint128_outOfBounds");
        uint128 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x10), _start))
        }

        return tempUint;
    }

    function toUint256(bytes memory _bytes, uint256 _start) internal pure returns (uint256) {
        require(_bytes.length >= _start + 32, "toUint256_outOfBounds");
        uint256 tempUint;

        assembly {
            tempUint := mload(add(add(_bytes, 0x20), _start))
        }

        return tempUint;
    }

    function toBytes32(bytes memory _bytes, uint256 _start) internal pure returns (bytes32) {
        require(_bytes.length >= _start + 32, "toBytes32_outOfBounds");
        bytes32 tempBytes32;

        assembly {
            tempBytes32 := mload(add(add(_bytes, 0x20), _start))
        }

        return tempBytes32;
    }

    function equal(bytes memory _preBytes, bytes memory _postBytes) internal pure returns (bool) {
        bool success = true;

        assembly {
            let length := mload(_preBytes)

            // if lengths don't match the arrays are not equal
            switch eq(length, mload(_postBytes))
            case 1 {
                // cb is a circuit breaker in the for loop since there's
                //  no said feature for inline assembly loops
                // cb = 1 - don't breaker
                // cb = 0 - break
                let cb := 1

                let mc := add(_preBytes, 0x20)
                let end := add(mc, length)

                for {
                    let cc := add(_postBytes, 0x20)
                // the next line is the loop condition:
                // while(uint256(mc < end) + cb == 2)
                } eq(add(lt(mc, end), cb), 2) {
                    mc := add(mc, 0x20)
                    cc := add(cc, 0x20)
                } {
                    // if any of these checks fails then arrays are not equal
                    if iszero(eq(mload(mc), mload(cc))) {
                        // unsuccess:
                        success := 0
                        cb := 0
                    }
                }
            }
            default {
                // unsuccess:
                success := 0
            }
        }

        return success;
    }

    function equalStorage(
        bytes storage _preBytes,
        bytes memory _postBytes
    )
        internal
        view
        returns (bool)
    {
        bool success = true;

        assembly {
            // we know _preBytes_offset is 0
            let fslot := sload(_preBytes.slot)
            // Decode the length of the stored array like in concatStorage().
            let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2)
            let mlength := mload(_postBytes)

            // if lengths don't match the arrays are not equal
            switch eq(slength, mlength)
            case 1 {
                // slength can contain both the length and contents of the array
                // if length < 32 bytes so let's prepare for that
                // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage
                if iszero(iszero(slength)) {
                    switch lt(slength, 32)
                    case 1 {
                        // blank the last byte which is the length
                        fslot := mul(div(fslot, 0x100), 0x100)

                        if iszero(eq(fslot, mload(add(_postBytes, 0x20)))) {
                            // unsuccess:
                            success := 0
                        }
                    }
                    default {
                        // cb is a circuit breaker in the for loop since there's
                        //  no said feature for inline assembly loops
                        // cb = 1 - don't breaker
                        // cb = 0 - break
                        let cb := 1

                        // get the keccak hash to get the contents of the array
                        mstore(0x0, _preBytes.slot)
                        let sc := keccak256(0x0, 0x20)

                        let mc := add(_postBytes, 0x20)
                        let end := add(mc, mlength)

                        // the next line is the loop condition:
                        // while(uint256(mc < end) + cb == 2)
                        for {} eq(add(lt(mc, end), cb), 2) {
                            sc := add(sc, 1)
                            mc := add(mc, 0x20)
                        } {
                            if iszero(eq(sload(sc), mload(mc))) {
                                // unsuccess:
                                success := 0
                                cb := 0
                            }
                        }
                    }
                }
            }
            default {
                // unsuccess:
                success := 0
            }
        }

        return success;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0, errorMessage);
        uint256 c = a / b;

        return c;
    }
}

// SPDX-License-Identifier: CLOSED - Pending Licensing Audit
pragma solidity ^0.8.4;

interface IClaimed {
    function isClaimed(address nftAddress, uint tokenId, bytes32[] calldata proof) external returns(bool);
    function claim(address nftAddress, uint tokenId, address _claimedBy) external;
}

// SPDX-License-Identifier: CLOSED - Pending Licensing Audit
pragma solidity ^0.8.4;

interface IHandlerCallback {
    enum CallbackType {
        MINT, TRANSFER, CLAIM, BURN, FALLBACK
    }

    struct Callback {
        address vault;
        address registrant;
        address target;
        bytes4 targetFunction;
        bool canRevert;
    }
    function executeCallbacksInternal(address _from, address _to, uint256 tokenId, CallbackType _type) external;
    function executeCallbacks(address _from, address _to, uint256 tokenId, CallbackType _type) external;
    function executeStoredCallbacksInternal(address _nftAddress, address _from, address _to, uint256 tokenId, IHandlerCallback.CallbackType _type) external;
    
}

// SPDX-License-Identifier: CLOSED - Pending Licensing Audit
pragma solidity ^0.8.4;
import "./IsBypassable.sol";

contract HasRegistration is IsBypassable {

    mapping(address => uint256) public registeredContracts; // 0 EMPTY, 1 ERC1155, 2 ERC721, 3 HANDLER, 4 ERC20, 5 BALANCE, 6 CLAIM, 7 UNKNOWN, 8 FACTORY, 9 STAKING, 10 BYPASS
    mapping(uint256 => address[]) internal registeredOfType;

    modifier isRegisteredContract(address _contract) {
        require(registeredContracts[_contract] > 0, "Contract is not registered");
        _;
    }

    modifier isRegisteredContractOrOwner(address _contract) {
        require(registeredContracts[_contract] > 0 || owner() == _msgSender(), "Contract is not registered nor Owner");
        _;
    }

    function registerContract(address _contract, uint _type) public isRegisteredContractOrOwner(_msgSender()) {
        registeredContracts[_contract] = _type;
        registeredOfType[_type].push(_contract);
    }

    function unregisterContract(address _contract, uint256 index) public onlyOwner isRegisteredContract(_contract) {
        address[] storage arr = registeredOfType[registeredContracts[_contract]];
        arr[index] = arr[arr.length - 1];
        arr.pop();
        delete registeredContracts[_contract];
    }

    function isRegistered(address _contract, uint256 _type) public view returns (bool) {
        return registeredContracts[_contract] == _type;
    }

    function getAllRegisteredContractsOfType(uint256 _type) public view returns (address[] memory) {
        return registeredOfType[_type];
    }
}

// SPDX-License-Identifier: CLOSED - Pending Licensing Audit
pragma solidity ^0.8.4;

import "./IsClaimable.sol";

abstract contract IsBypassable is IsClaimable {

    bool byPassable;
    mapping(address => mapping(bytes4 => bool)) byPassableFunction;
    mapping(address => mapping(uint256 => bool)) byPassableIds;

    modifier onlyOwner virtual override {
        bool _canBypass = byPassable && byPassableFunction[_msgSender()][msg.sig];
        require(owner() == _msgSender() || _canBypass, "Not owner or able to bypass");
            _;
    }

    modifier onlyOwnerOrBypassWithId(uint256 id) {
        require (owner() == _msgSender() || (id != 0 && byPassableIds[_msgSender()][id] ), "Invalid id");
            _;
    }

    function canBypass() internal view returns(bool) {
        return (byPassable && byPassableFunction[_msgSender()][msg.sig]);
    }

    function canBypassForTokenId(uint256 id) internal view returns(bool) {
        return (byPassable && canBypass() && byPassableIds[_msgSender()][id]);
    }

    function toggleBypassability() public onlyOwner {
      byPassable = !byPassable;
    }

    function addBypassRule(address who, bytes4 functionSig, uint256 id) public onlyOwner {
        byPassableFunction[who][functionSig] = true;
        if (id != 0) {
            byPassableIds[who][id] = true;
        }        
    }

    function removeBypassRule(address who, bytes4 functionSig, uint256 id) public onlyOwner {
        byPassableFunction[who][functionSig] = false;
        if (id !=0) {
            byPassableIds[who][id] = true;
        }
    }
}

// SPDX-License-Identifier: CLOSED - Pending Licensing Audit
pragma solidity ^0.8.4;
import "./OwnableUpgradeable.sol";
abstract contract IsClaimable is OwnableUpgradeable {

    bool public isClaimable;

    function toggleClaimable() public onlyOwner {
        isClaimable = !isClaimable;
    }
   
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.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 OwnableUpgradeable is Initializable, ContextUpgradeable {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    function __Ownable_init() internal onlyInitializing {
        __Ownable_init_unchained();
    }

    function __Ownable_init_unchained() internal onlyInitializing {
        _transferOwnership(_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() 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);
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/**
 * @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 ContextUpgradeable is Initializable {
    function __Context_init() internal onlyInitializing {
    }

    function __Context_init_unchained() internal onlyInitializing {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

import "../../utils/AddressUpgradeable.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original
     * initialization step. This is essential to configure modules that are added through upgrades and that require
     * initialization.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     */
    function _disableInitializers() internal virtual {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized < type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}