文件 1 的 1:NFTI.sol
pragma solidity >=0.6.0 <0.8.0;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this;
return msg.data;
}
}
abstract contract Ownable is Context {
address private _owner;
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view virtual returns (address) {
return _owner;
}
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
}
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) {
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
library Address {
function isContract(address account) internal view returns (bool) {
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
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");
}
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);
}
function _verifyCallResult( bool success, bytes memory returndata, string memory errorMessage) private pure returns (bytes memory) {
if (success) {
return returndata;
} else {
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
library EnumerableSet {
struct Set {
bytes32[] _values;
mapping(bytes32 => uint256) _indexes;
}
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
function _remove(Set storage set, bytes32 value) private returns (bool) {
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) {
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
bytes32 lastvalue = set._values[lastIndex];
set._values[toDeleteIndex] = lastvalue;
set._indexes[lastvalue] = toDeleteIndex + 1;
set._values.pop();
delete set._indexes[value];
return true;
} else {
return false;
}
}
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
function _at(Set storage set, uint256 index) private view returns (bytes32) {
require(set._values.length > index, "EnumerableSet: index out of bounds");
return set._values[index];
}
struct UintSet {
Set _inner;
}
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
}
library EnumerableMap {
struct MapEntry {
bytes32 _key;
bytes32 _value;
}
struct Map {
MapEntry[] _entries;
mapping(bytes32 => uint256) _indexes;
}
function _set(Map storage map, bytes32 key, bytes32 value) private returns (bool) {
uint256 keyIndex = map._indexes[key];
if (keyIndex == 0) {
map._entries.push(MapEntry({_key: key, _value: value}));
map._indexes[key] = map._entries.length;
return true;
} else {
map._entries[keyIndex - 1]._value = value;
return false;
}
}
function _remove(Map storage map, bytes32 key) private returns (bool) {
uint256 keyIndex = map._indexes[key];
if (keyIndex != 0) {
uint256 toDeleteIndex = keyIndex - 1;
uint256 lastIndex = map._entries.length - 1;
MapEntry storage lastEntry = map._entries[lastIndex];
map._entries[toDeleteIndex] = lastEntry;
map._indexes[lastEntry._key] = toDeleteIndex + 1;
map._entries.pop();
delete map._indexes[key];
return true;
} else {
return false;
}
}
function _contains(Map storage map, bytes32 key) private view returns (bool) {
return map._indexes[key] != 0;
}
function _length(Map storage map) private view returns (uint256) {
return map._entries.length;
}
function _at(Map storage map, uint256 index) private view returns (bytes32, bytes32) {
require(map._entries.length > index, "EnumerableMap: index out of bounds");
MapEntry storage entry = map._entries[index];
return (entry._key, entry._value);
}
function _get(Map storage map, bytes32 key) private view returns (bytes32) {
return _get(map, key, "EnumerableMap: nonexistent key");
}
function _get(Map storage map, bytes32 key, string memory errorMessage) private view returns (bytes32) {
uint256 keyIndex = map._indexes[key];
require(keyIndex != 0, errorMessage);
return map._entries[keyIndex - 1]._value;
}
struct UintToAddressMap {
Map _inner;
}
function set(UintToAddressMap storage map, uint256 key, address value) internal returns (bool) {
return _set(map._inner, bytes32(key), bytes32(uint256(value)));
}
function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) {
return _remove(map._inner, bytes32(key));
}
function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) {
return _contains(map._inner, bytes32(key));
}
function length(UintToAddressMap storage map) internal view returns (uint256) {
return _length(map._inner);
}
function at(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {
(bytes32 key, bytes32 value) = _at(map._inner, index);
return (uint256(key), address(uint256(value)));
}
function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {
return address(uint256(_get(map._inner, bytes32(key))));
}
function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) {
return address(uint256(_get(map._inner, bytes32(key), errorMessage)));
}
}
library Strings {
function toString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
uint256 index = digits - 1;
temp = value;
while (temp != 0) {
buffer[index--] = bytes1(uint8(48 + (temp % 10)));
temp /= 10;
}
return string(buffer);
}
}
interface IERC165 {
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
interface IERC721 is IERC165 {
function balanceOf(address owner) external view returns (uint256 balance);
function ownerOf(uint256 tokenId) external view returns (address owner);
function safeTransferFrom(address from, address to, uint256 tokenId) external;
function transferFrom(address from, address to, uint256 tokenId) external;
function approve(address to, uint256 tokenId) external;
function getApproved(uint256 tokenId) external view returns (address operator);
function setApprovalForAll(address operator, bool _approved) external;
function isApprovedForAll(address owner, address operator) external view returns (bool);
function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
}
interface IERC721Metadata is IERC721 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function tokenURI(uint256 tokenId) external view returns (string memory);
}
interface IERC721Enumerable is IERC721 {
function totalSupply() external view returns (uint256);
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);
function tokenByIndex(uint256 index) external view returns (uint256);
}
interface IERC721Receiver {
function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4);
}
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
function burn(uint256 burnQuantity) external returns (bool);
function mintTokens(address account, uint256 amount) external;
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
contract NFTI is IERC721, IERC721Metadata, IERC721Enumerable, Ownable {
using SafeMath for uint256;
using Address for address;
using EnumerableSet for EnumerableSet.UintSet;
using EnumerableMap for EnumerableMap.UintToAddressMap;
using Strings for uint256;
mapping(uint256 => address) private _tokenApprovals;
mapping(uint256 => uint256) _expandedTokens;
mapping(address => EnumerableSet.UintSet) private _holderTokens;
mapping(address => mapping(address => bool)) private _operatorApprovals;
mapping(address => uint256) _privateTokens;
EnumerableMap.UintToAddressMap private _tokenOwners;
address private _ISETAddress;
uint256 private _expandedTokensSupply = 0;
uint256 private _seed = 679;
uint256 private _finish_reveal_time = 1616868000;
uint256 private _start_sold_time = 1616263200;
uint256 private _start_presale_time = 1616259600;
modifier paused() {
require(block.timestamp > _start_presale_time);
_;
}
function getNftPrice(uint256 numberOfNfts) public view returns (uint256) {
require(totalSold() < 1294, "Sale has already ended");
if(totalSold() >= 1284) {
return uint256(0).mul(numberOfNfts);
} else if(totalSold() >= 1280) {
return uint256(4000000000000000000).mul(min(totalSold().add(numberOfNfts), 1284).sub(totalSold())).add(
uint256(0).mul(totalSold().add(numberOfNfts) >= 1284 ? totalSold().add(numberOfNfts).sub(1284) : 0));
} else if(totalSold() >= 1240) {
return uint256(1000000000000000000).mul(min(totalSold().add(numberOfNfts), 1280).sub(totalSold())).add(
uint256(4000000000000000000).mul(totalSold().add(numberOfNfts) >= 1280 ? totalSold().add(numberOfNfts).sub(1280) : 0));
} else if(totalSold() >= 1090) {
return uint256(700000000000000000).mul(min(totalSold().add(numberOfNfts), 1240).sub(totalSold())).add(
uint256(1000000000000000000).mul(totalSold().add(numberOfNfts) >= 1240 ? totalSold().add(numberOfNfts).sub(1240) : 0));
} else if(totalSold() >= 390) {
return uint256(500000000000000000).mul(min(totalSold().add(numberOfNfts), 1090).sub(totalSold())).add(
uint256(700000000000000000).mul(totalSold().add(numberOfNfts) >= 1090 ? totalSold().add(numberOfNfts).sub(1090) : 0));
} else if(totalSold() >= 50) {
return uint256(300000000000000000).mul(min(totalSold().add(numberOfNfts), 390).sub(totalSold())).add(
uint256(500000000000000000).mul(totalSold().add(numberOfNfts) >= 390 ? totalSold().add(numberOfNfts).sub(390) : 0));
} else {
return uint256(100000000000000000).mul(min(totalSold().add(numberOfNfts), 50).sub(totalSold())).add(
uint256(300000000000000000).mul(totalSold().add(numberOfNfts) >= 50 ? totalSold().add(numberOfNfts).sub(50) : 0));
}
}
constructor(address ISETAddress) {
_ISETAddress = ISETAddress;
}
function setGiftAddress(address[] memory customers) public onlyOwner {
require(customers.length == 10, "Length must be 10");
for (uint256 i = 0; i < 10; ++i) {
_privateTokens[customers[i]] = 1294 + 1309 + i + 1;
}
}
function setAirdropAddress(address[] memory customers) public onlyOwner {
require(customers.length == 10, "Length must be 10");
for (uint256 i = 0; i < 10; ++i) {
_privateTokens[customers[i]] = 1294 + 1309 + 10 + i + 1;
}
}
function name() public pure override returns (string memory) {
return "NFT Idols";
}
function symbol() public pure override returns (string memory) {
return "NFTI";
}
function isAdressInPreSale(address customer) public pure returns (bool) {
return customer == address(0x5ad0734530568E5C80036fd814A8B50ac0A3EB4F) ||
customer == address(0xb3aAb295861Ffd41071337A4Bf2a8357b4b6a353) ||
customer == address(0x2993E1D02b11377f44455AEdc618C705acbb0591) ||
customer == address(0xc04B87e282D5dC43D0e6605D574867E7cea7e25d) ||
customer == address(0x2a0F818DCA7109a11Ae7C1bb1266Bddd4C1194a7) ||
customer == address(0xf3453f0a63f72BEE573449d446895C805920A4b1) ||
customer == address(0x443b29e221b54f7bE8C0805859f57028CFF0A1CA) ||
customer == address(0xa5126a1D3A39beB4679e9BF20ebeA12E8006ADEa) ||
customer == address(0x337ec021aCE842e3D2c76931921942d10945d5ba) ||
customer == address(0xf601b1c1Dce139469E4969938c1ce9D58e30bdB9);
}
function baseURI() public pure returns (string memory) {
return "https://gateway.pinata.cloud/ipfs/QmQd2BcnhEYYcZjwH5MDa4ArzTBc5uaumBe1uwfwgQnK6z/";
}
function totalSupply() public pure virtual override returns (uint256) {
return 1294 + 1309 + 20;
}
function getISETAddress() public view returns (address) {
return _ISETAddress;
}
function startingIndex() public view returns (uint256) {
return _seed;
}
function startSoldIime() public view returns (uint256) {
return _start_sold_time;
}
function isRevealEnd() public view returns (bool) {
return block.timestamp > _finish_reveal_time || totalSold() == 1294;
}
function balanceOf(address owner) public view override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _holderTokens[owner].length();
}
function ownerOf(uint256 tokenId) public view override returns (address) {
return _tokenOwners.get(tokenId, "ERC721: owner query for nonexistent token");
}
function _getTokenURI(uint256 tokenId) internal view returns (uint256) {
return tokenId <= 1294 ? (tokenId + _seed) % 1294 + 1 : tokenId;
}
function withdraw(uint256 amount) onlyOwner external {
msg.sender.transfer(amount);
}
function tokenURI(uint256 tokenId) public view override returns (string memory) {
if (!isRevealEnd()) {
return string(abi.encodePacked(baseURI(), "0"));
}
return string(abi.encodePacked(baseURI(), _getTokenURI(tokenId).toString()));
}
function tokenByIndex(uint256 index) public view override returns (uint256) {
(uint256 tokenId, ) = _tokenOwners.at(index);
return tokenId;
}
function tokenOfOwnerByIndex(address owner, uint256 index) public view override returns (uint256) {
return _holderTokens[owner].at(index);
}
function getApproved(uint256 tokenId) public view override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
function isApprovedForAll(address owner, address operator) public view override returns (bool) {
return _operatorApprovals[owner][operator];
}
function totalSold() public view returns (uint256) {
return _tokenOwners.length().sub(_expandedTokensSupply);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _exists(uint256 tokenId) internal view returns (bool) {
return _tokenOwners.contains(tokenId);
}
function supportsInterface(bytes4 interfaceId) public pure override returns (bool) {
return interfaceId == 0x01ffc9a7 || interfaceId == 0x80ac58cd || interfaceId == 0x5b5e139f || interfaceId == 0x780e9d63;
}
function approve(address to, uint256 tokenId) public virtual override {
address owner = ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(_msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all");
_approve(to, tokenId);
}
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
function getRevealTime() public view returns (uint256) {
return _finish_reveal_time;
}
function isPreSaleNow() public view returns (bool) {
return block.timestamp < _start_sold_time && block.timestamp >= _start_presale_time;
}
function transferFrom(address from, address to, uint256 tokenId) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual {
_mint(to, tokenId);
require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_holderTokens[to].add(tokenId);
_tokenOwners.set(tokenId, to);
emit Transfer(address(0), to, tokenId);
}
function _transfer(address from, address to, uint256 tokenId) internal virtual {
require(ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_approve(address(0), tokenId);
_holderTokens[from].remove(tokenId);
_holderTokens[to].add(tokenId);
_tokenOwners.set(tokenId, to);
emit Transfer(from, to, tokenId);
}
function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data) private returns (bool) {
if (!to.isContract()) {
return true;
}
bytes memory returndata =
to.functionCall(
abi.encodeWithSelector(
IERC721Receiver(to).onERC721Received.selector,
_msgSender(),
from,
tokenId,
_data
),
"ERC721: transfer to non ERC721Receiver implementer"
);
bytes4 retval = abi.decode(returndata, (bytes4));
return (retval == 0x150b7a02);
}
function _approve(address to, uint256 tokenId) private {
_tokenApprovals[tokenId] = to;
emit Approval(ownerOf(tokenId), to, tokenId);
}
uint256 private _bitarray;
uint256 private constant _ZERO_PRIME = 13;
uint256 private constant _FIRST_PRIME = 1273;
function _getWasTaken(uint256 chankId) internal view returns (uint256) {
return (_bitarray >> (22 * chankId)) & ((1 << 11) - 1);
}
function _getCurrentState(uint256 chankId) internal view returns (uint256) {
return ((_bitarray >> (22 * chankId)) >> 11) & ((1 << 11) - 1);
}
function _addWasTaken(uint256 chankId, uint256 bitarray) pure internal returns (uint256) {
return bitarray + (1 << (22 * chankId));
}
function _setCurrentState(uint256 chankId, uint256 value, uint256 bitarray) pure internal returns (uint256) {
bitarray &= ((1 << 44) - 1) - (((1 << 11) - 1) << (11 + 22 * chankId));
bitarray |= value << (11 + 22 * chankId);
return bitarray;
}
function _getChankSize() internal pure returns (uint256) {
return 1294 / 2;
}
function _getNewRandomTokenId() internal returns (uint256) {
uint256 random_chank = (block.number + block.timestamp) % 2;
if (_getWasTaken(random_chank) == _getChankSize()) {
random_chank = random_chank == 0 ? 1 : 0;
}
uint256 current_state = _getCurrentState(random_chank);
uint256 bitarray = _addWasTaken(random_chank, _bitarray);
bitarray = _setCurrentState(random_chank, (current_state + (1 - random_chank) * _ZERO_PRIME + random_chank * _FIRST_PRIME) % _getChankSize(), bitarray);
_bitarray = bitarray;
uint256 result = (current_state + 1) * 2 - random_chank;
return result;
}
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
function buyItem(uint256 numberOfNfts) public payable paused {
require(_tokenOwners.length() < 1294, "Sale has already ended");
require(numberOfNfts > 0, "numberOfNfts can't be 0");
require(numberOfNfts <= 10, "You may not buy more than 10 NFTs at once");
require(!isPreSaleNow() || isPreSaleNow() && balanceOf(_msgSender()).add(numberOfNfts) <= 10 && isAdressInPreSale(_msgSender()), "");
require(_tokenOwners.length().add(numberOfNfts) <= 1294, "Exceeds Sale Supply!");
require(msg.value == getNftPrice(numberOfNfts), string(abi.encodePacked("Need to send exactly the matching ether: ", getNftPrice(numberOfNfts).toString())));
for (uint256 i = 0; i < numberOfNfts; ++i) {
_safeMint(_msgSender(), _getNewRandomTokenId());
}
if (!isRevealEnd()) {
_seed += block.number + block.timestamp;
}
IERC20(_ISETAddress).mintTokens(_msgSender(), numberOfNfts * 50);
}
function burn(uint256 tokenId) public {
require(_msgSender() == _tokenOwners.get(tokenId, "ERC721: owner query for nonexistent token"), "You are not owner of token");
require(ownerOf(tokenId) == _msgSender(), "ERC721: transfer of token that is not own");
_approve(address(0), tokenId);
_holderTokens[_msgSender()].remove(tokenId);
_holderTokens[address(0)].add(tokenId);
_tokenOwners.set(tokenId, address(0));
emit Transfer(_msgSender(), address(0), tokenId);
IERC20(_ISETAddress).mintTokens(_msgSender(), 35);
}
function expandToken(uint256 tokenId) public returns (uint256) {
require(isRevealEnd(), "Reveal is not ended");
require(_msgSender() == ownerOf(tokenId), string(abi.encodePacked("You are not owner ", tokenId.toString())));
uint256 tokenURI = _getTokenURI(tokenId);
require(tokenURI <= 10 * 119 || tokenURI > 1294 && tokenURI <= 1294 + 1309, "This cards not expandeble");
require(IERC20(_ISETAddress).balanceOf(_msgSender()) >= 100, "Not enought ERC20 tokens");
uint256 idGroup = tokenURI <= 1294 ? tokenURI.add(10 - 1).div(10) : (tokenURI - 1294).add(11 - 1).div(11);
require(_expandedTokens[idGroup] < 11, "Upgradable tokens are ended");
uint256 startingGroupTokenId = 1294 + 1 + (idGroup - 1) * 11;
uint256 relativeStart = (block.number + block.timestamp) % 11;
uint256 expandedTokenId = 0;
for (uint256 offset = 0; offset < 11; ++offset) {
expandedTokenId = startingGroupTokenId + ((relativeStart + offset) % 11);
if (!_exists(expandedTokenId)) {
IERC20(_ISETAddress).transferFrom(_msgSender(), address(this), 100);
IERC20(_ISETAddress).burn(100);
_safeMint(_msgSender(), expandedTokenId);
_expandedTokens[idGroup]++;
_expandedTokensSupply++;
return expandedTokenId;
}
}
return 0;
}
function claim() public returns (uint256) {
require(_privateTokens[_msgSender()] != 0, "You don't have private tokens");
require(!_exists(_privateTokens[_msgSender()]), "You gift is already minted");
_safeMint(_msgSender(), _privateTokens[_msgSender()]);
return _privateTokens[_msgSender()];
}
}