forked from DecentralizedClimateFoundation/DCIPs
37 lines
1.7 KiB
Solidity
37 lines
1.7 KiB
Solidity
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// SPDX-License-Identifier: CC0-1.0
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pragma solidity ^0.8.0;
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interface IERC5334 {
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// Logged when the user of a token assigns a new user or updates expires
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/// @notice Emitted when the `user` of an NFT or the `expires` of the `user` is changed or the `level` of the `user` is changed
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/// The zero address for user indicates that there is no user address
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event UpdateUser(uint256 indexed tokenId, address indexed user, uint64 expires, uint8 level);
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/// @notice set the user and expires of a NFT
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/// @dev The zero address indicates there is no user
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/// Throws if `tokenId` is not valid NFT
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/// @param user The new user of the NFT
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/// @param expires UNIX timestamp, The new user could use the NFT before expires
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/// @param level user level
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function setUser(uint256 tokenId, address user, uint64 expires, uint8 level) external ;
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/// @notice Get the user address of an NFT
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/// @dev The zero address indicates that there is no user or the user is expired
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/// @param tokenId The NFT to get the user address for
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/// @return The user address for this NFT
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function userOf(uint256 tokenId) external view returns(address);
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/// @notice Get the user expires of an NFT
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/// @dev The zero value indicates that there is no user
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/// @param tokenId The NFT to get the user expires for
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/// @return The user expires for this NFT
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function userExpires(uint256 tokenId) external view returns(uint256);
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/// @notice Get the user level of an NFT
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/// @dev The zero value indicates that there is no user
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/// @param tokenId The NFT to get the user level for
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/// @return The user level for this NFT
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function userLevel(uint256 tokenId) external view returns(uint256);
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}
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