Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
- Contract name:
- NFTMulticlassFreeMint
- Optimization enabled
- true
- Compiler version
- v0.8.17+commit.8df45f5f
- Optimization runs
- 1000
- EVM Version
- default
- Verified at
- 2024-09-26T15:33:35.435973Z
Contract source code
// SPDX-License-Identifier: GPL
pragma solidity ^0.8.0;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
abstract contract Ownable is Context {
address internal _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
constructor() {
_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() {
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);
}
}
interface NFTInterface {
function mintWithClass(uint256 classId) external returns (uint256 _newTokenID);
function transfer(address _to, uint256 _tokenId, bytes calldata _data) external returns (bool);
function addPropertyWithContent(uint256 _tokenId, string calldata _content) external;
}
contract NFTMulticlassFreeMint is Ownable{
event ClassMinterCreated(uint256 indexed tokenClassAuctionID);
event TokenMinted(uint256 indexed tokenID, uint256 indexed tokenClassID, address indexed beneficiary);
event NFTContractSet(address indexed newNFTContract, address indexed oldNFTContract);
address public nft_contract;
struct NFTClassMinter
{
uint256 amount_minted;
uint256 max_amount;
mapping (address => bool) isOwner;
}
mapping (uint256 => NFTClassMinter) public classMinters; // Mapping from classID (at NFT contract) to set of variables
// defining the auction for this token class.
constructor()
{
_owner = msg.sender;
}
function createNFTClassMinter(uint256 _classID, uint256 _max_amount) public onlyOwner
{
classMinters[_classID].amount_minted = 0;
classMinters[_classID].max_amount = _max_amount;
emit ClassMinterCreated(_classID);
}
function setNFTContract(address _nftContract) public onlyOwner
{
emit NFTContractSet(_nftContract, nft_contract);
nft_contract = _nftContract;
}
function getIsOwner(uint _classID, address _address) public view returns (bool) {
return classMinters[_classID].isOwner[_address];
}
function mintNFT(uint256 _classID, address _to) public onlyOwner
{
require(classMinters[_classID].max_amount > classMinters[_classID].amount_minted, "There are no more NFTs left");
require(classMinters[_classID].isOwner[_to] == false, "Token already minted to this address");
uint256 _mintedId = NFTInterface(nft_contract).mintWithClass(_classID);
unchecked{
classMinters[_classID].amount_minted++;
}
configureNFT(_mintedId, _classID);
classMinters[_classID].isOwner[_to] = true;
NFTInterface(nft_contract).transfer(_to, _mintedId, "");
emit TokenMinted(_mintedId, _classID, msg.sender);
}
function configureNFT(uint256 _tokenId, uint256 _classId) internal
{
//Add Serial Number to the created Token
uint256 tokenSerialNumber = classMinters[_classId].amount_minted;
NFTInterface(nft_contract).addPropertyWithContent(_tokenId, toString(tokenSerialNumber));
}
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/Strings.sol#L15-L35
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
unchecked{
digits++;
}
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
}
Contract ABI
[{"type":"constructor","stateMutability":"nonpayable","inputs":[]},{"type":"event","name":"ClassMinterCreated","inputs":[{"type":"uint256","name":"tokenClassAuctionID","internalType":"uint256","indexed":true}],"anonymous":false},{"type":"event","name":"NFTContractSet","inputs":[{"type":"address","name":"newNFTContract","internalType":"address","indexed":true},{"type":"address","name":"oldNFTContract","internalType":"address","indexed":true}],"anonymous":false},{"type":"event","name":"OwnershipTransferred","inputs":[{"type":"address","name":"previousOwner","internalType":"address","indexed":true},{"type":"address","name":"newOwner","internalType":"address","indexed":true}],"anonymous":false},{"type":"event","name":"TokenMinted","inputs":[{"type":"uint256","name":"tokenID","internalType":"uint256","indexed":true},{"type":"uint256","name":"tokenClassID","internalType":"uint256","indexed":true},{"type":"address","name":"beneficiary","internalType":"address","indexed":true}],"anonymous":false},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"amount_minted","internalType":"uint256"},{"type":"uint256","name":"max_amount","internalType":"uint256"}],"name":"classMinters","inputs":[{"type":"uint256","name":"","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"createNFTClassMinter","inputs":[{"type":"uint256","name":"_classID","internalType":"uint256"},{"type":"uint256","name":"_max_amount","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"getIsOwner","inputs":[{"type":"uint256","name":"_classID","internalType":"uint256"},{"type":"address","name":"_address","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"mintNFT","inputs":[{"type":"uint256","name":"_classID","internalType":"uint256"},{"type":"address","name":"_to","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"nft_contract","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"owner","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setNFTContract","inputs":[{"type":"address","name":"_nftContract","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"transferOwnership","inputs":[{"type":"address","name":"newOwner","internalType":"address"}]}]
Contract Creation Code
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ByteCode
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