File size: 2,400 Bytes
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pragma solidity ^0.8.20;
import {ERC721} from "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import {IERC4907} from "./interfaces/IERC4907.sol";
import {IERC5192} from "./interfaces/IERC5192.sol";
abstract contract CollectionNonClearingBase is ERC721, IERC4907, IERC5192 {
struct UserInfo {
address user;
uint64 expires;
}
address public immutable issuer;
mapping(uint256 => UserInfo) private _users;
mapping(uint256 => bool) private _locked;
constructor() ERC721("Layered Collection", "LAYER") {
issuer = msg.sender;
}
function mint(address to, uint256 tokenId) external {
require(msg.sender == issuer, "only issuer");
_mint(to, tokenId);
}
function setLocked(uint256 tokenId, bool value) public virtual {
require(msg.sender == _requireOwned(tokenId), "only owner");
_locked[tokenId] = value;
if (value) emit Locked(tokenId);
else emit Unlocked(tokenId);
}
function locked(uint256 tokenId) public view returns (bool) {
_requireOwned(tokenId);
return _locked[tokenId];
}
function setUser(uint256 tokenId, address user, uint64 expires) public virtual {
require(_isAuthorized(_requireOwned(tokenId), msg.sender, tokenId), "caller is not owner nor approved");
require(expires > block.timestamp, "expiry must be in the future");
_users[tokenId] = UserInfo(user, expires);
emit UpdateUser(tokenId, user, expires);
}
function userOf(uint256 tokenId) public view returns (address) {
return block.timestamp < _users[tokenId].expires ? _users[tokenId].user : address(0);
}
function userExpires(uint256 tokenId) public view returns (uint256) {
return _users[tokenId].expires;
}
function supportsInterface(bytes4 interfaceId) public view override returns (bool) {
return interfaceId == type(IERC4907).interfaceId || interfaceId == type(IERC5192).interfaceId
|| super.supportsInterface(interfaceId);
}
function _update(address to, uint256 tokenId, address auth) internal override returns (address from) {
from = super._update(to, tokenId, auth);
if (from != address(0)) {
require(!_locked[tokenId], "token is locked");
}
}
}
contract CollectionV3 is CollectionNonClearingBase {}
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