forked from DecentralizedClimateFoundation/DCIPs
58 lines
2.3 KiB
Solidity
58 lines
2.3 KiB
Solidity
// SPDX-License-Identifier: MIT
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// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol)
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pragma solidity ^0.8.0;
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import "../ERC5496.sol";
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import "./IERC5496Cloneable.sol";
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/**
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* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
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* enumerability of all the token ids in the contract as well as all token ids owned by each
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* account.
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*/
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abstract contract ERC5496Cloneable is ERC5496, IERC5496Cloneable {
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struct CloneableRecord {
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// account => shared
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mapping(address => bool) shared;
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// account => refer
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mapping(address => address) referrer;
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}
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// privId => isCloneable
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mapping(uint => bool) public cloneable;
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// tokenId => privId => CloneableRecord
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mapping(uint => mapping(uint => CloneableRecord)) cloneableSetting;
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function supportsInterface(bytes4 interfaceId) public override virtual view returns (bool) {
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return interfaceId == type(IERC5496Cloneable).interfaceId || super.supportsInterface(interfaceId);
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}
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function hasPrivilege(
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uint256 tokenId,
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uint256 privId,
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address user
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) public override virtual view returns(bool) {
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if ( privilegeBook[tokenId].privilegeEntry[privId].expiresAt >= block.timestamp ){
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return cloneableSetting[tokenId][privId].shared[user] || super.hasPrivilege(tokenId, privId, user);
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}
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return ownerOf(tokenId) == user;
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}
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function clonePrivilege(uint tokenId, uint privId, address referrer) external returns (bool) {
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require(cloneable[privId], "privilege not cloneable");
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return _clonePrivilege(tokenId, privId, referrer);
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}
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function _clonePrivilege(uint tokenId, uint privId, address referrer) internal returns (bool) {
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require(privilegeBook[tokenId].privilegeEntry[privId].user == referrer || cloneableSetting[tokenId][privId].shared[referrer], "referrer not exists");
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if (cloneableSetting[tokenId][privId].referrer[msg.sender] == address(0)) {
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cloneableSetting[tokenId][privId].shared[msg.sender] = true;
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cloneableSetting[tokenId][privId].referrer[msg.sender] = referrer;
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emit PrivilegeCloned(tokenId, privId, referrer, msg.sender);
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return true;
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}
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return false;
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}
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}
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