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August 28, 2021 22:08
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// SPDX-License-Identifier: MIT | |
pragma solidity ^0.8.2; | |
import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; | |
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol"; | |
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol"; | |
import "@openzeppelin/contracts/security/Pausable.sol"; | |
import "@openzeppelin/contracts/access/Ownable.sol"; | |
import "@openzeppelin/contracts/utils/Counters.sol"; | |
contract Pronouns is ERC721, ERC721Enumerable, ERC721URIStorage, Pausable, Ownable { | |
using Counters for Counters.Counter; | |
// Trust. | |
uint256 public constant MAX_PER_CALL = 1; | |
uint256 public constant MAX_SUPPLY = 25; | |
uint256 public constant NFT_PRICE = 0.015e18; | |
uint256 public constant MAX_PRONOUN_ENUM = 8; | |
Counters.Counter private _tokenIdCounter; | |
constructor() ERC721("Pronouns", "PN365") {} | |
function _baseURI() internal pure override returns (string memory) { | |
return "ipfs://bafybeifpcbismthfl5gyngxnq2kbdoc4nunnxo4jrtjsnrsnwoprdtflnq/"; | |
} | |
function pause() public onlyOwner { | |
_pause(); | |
} | |
function unpause() public onlyOwner { | |
_unpause(); | |
} | |
function defineYourself(address to, uint256 pronounEnum) public onlyOwner { | |
// Sanity check transaction | |
require(_tokenIdCounter.current() <= MAX_SUPPLY, "Amount exceeds max supply"); | |
// require(msg.value == NFT_PRICE, "Wrong minting price"); | |
// Ensure pronoun selection is within spec | |
require(pronounEnum > 0, "Select a pronoun selection greater than 0"); | |
require(pronounEnum <= MAX_PRONOUN_ENUM, "Invalid pronoun selection"); | |
// Build the tokenId | |
string memory test = append(_tokenIdCounter.current(), "_", pronounEnum); | |
safeMint(to, test); | |
} | |
function append(uint256 a, string memory b, uint256 c) internal pure returns (string memory) { | |
return string(abi.encodePacked(a, b)); | |
} | |
function safeMint(address to, uint256 pronounEnum) private { | |
// _safeMint(to, _tokenIdCounter.current()); | |
_safeMint(to, pronounEnum); | |
_tokenIdCounter.increment(); | |
} | |
function _beforeTokenTransfer(address from, address to, uint256 tokenId) | |
internal | |
whenNotPaused | |
override(ERC721, ERC721Enumerable) | |
{ | |
super._beforeTokenTransfer(from, to, tokenId); | |
} | |
// The following functions are overrides required by Solidity. | |
function _burn(uint256 tokenId) internal override(ERC721, ERC721URIStorage) { | |
super._burn(tokenId); | |
} | |
function tokenURI(uint256 tokenId) | |
public | |
view | |
override(ERC721, ERC721URIStorage) | |
returns (string memory) | |
{ | |
return super.tokenURI(tokenId); | |
} | |
function supportsInterface(bytes4 interfaceId) | |
public | |
view | |
override(ERC721, ERC721Enumerable) | |
returns (bool) | |
{ | |
return super.supportsInterface(interfaceId); | |
} | |
} |
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