84 lines
5.1 KiB
Solidity
84 lines
5.1 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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/// @title smartNFT: Hardblock - ERC-721 Non-Fungible Token Standard-based
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interface smartNFT{
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/// @dev This emits when an user of a NFT changes
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/// This event emits when the user of a token is assigned
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/// (`_addressUser` == 0) when a user is unassigned
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event UserAssigned(uint256 indexed tokenID, address indexed _addressUser);
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/// @dev This emits when an user of a NFT verifies a device
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/// This event emits when the user of a device finishes the assignment process
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event UserEngaged(uint256 indexed tokenID);
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/// @dev This emits when an owner of a NFT verifies a device
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/// This event emits when the owner of a device finishes the transfer process
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event OwnerEngaged(uint256 indexed tokenID);
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//TODO: Describe new functions and events
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event TimeoutAlarm(uint256 indexed tokenID);
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/// @notice This function defines how the smart device is bound to a new token
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/// @dev Only the manufacturer of the smart device account can create a token and will be the first owner of the token
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/// The initial state of the token is "waitingForOwner" until verified by the new owner
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/// @param _addressSD An address generated by the smart device. Only de smart device can generate this account. _addressOwner is the first owner of the Smart Device
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/// @return The tokenID of the token bound to the smart device
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function createToken(address _addressSD, address _addressOwner) external returns (uint256);
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/// @notice This function defines the transference of use of a smart device
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/// @dev Only the owner of the token account can transfer a token provided that the state of the token is "engagedWithOwner","waitingForUser" or "engagedWithUser".
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/// The state of the token must change to "waitingForUser" and the parameter addressUser of the token defined by _tokenID must change to _addressUser
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/// @param _tokenId The tokenID of the smart device
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/// @param _addressUser The address of the new user
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function setUser(uint256 _tokenId, address _addressUser) external;
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//TODO: Describe new functions and events
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function startOwnerEngagement(uint256 _tokenId, uint256 _dataEngage, uint256 _hashK_O) external;
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function ownerEngagement(uint256 _hashK_D) external;
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function startUserEngagement(uint256 _tokenId, uint256 _dataEngage, uint256 _hashK_U) external;
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function userEngagement(uint256 _hashK_D) external;
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function checkTimeout(uint256 _tokenId) external returns (bool);
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function setTimeout(uint256 _tokenId, uint256 _timeout) external;
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function updateTimestamp() external;
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/// @notice This function let us obtain the tokenID from an address of smart device
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/// @dev Everybody can call this function. It does not execute any code on blockchain, only reads
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/// @param _addressSD The address to obtain its token ID
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/// @return The token ID of the token bound to _addressSD
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function tokenFromBCA(address _addressSD) external view returns (uint256);
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/// @notice This function let us know who is the owner of the token from the address of the smart device
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/// @dev Everybody can call this function. It does not execute any code on blockchain, only reads
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/// @param _addressSD The address to obtain its owner
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/// @return The owner of the token bound to _addressSD
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function ownerOfFromBCA(address _addressSD) external view returns (address);
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/// @notice This function let us know who is the user of the token from the tokenId
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/// @dev Everybody can call this function. It does not execute any code on blockchain, only reads
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/// @param _tokenId of the token to obtain its user
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/// @return The user of the token with _tokenId
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function userOf(uint256 _tokenId) external view returns (address);
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/// @notice This function let us know who is the user of the token from the address of the smart device
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/// @dev Everybody can call this function. It does not execute any code on blockchain, only reads
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/// @param _addressSD The address to obtain its user.
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/// @return The user of the token bound to _addressSD.
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function userOfFromBCA(address _addressSD) external view returns (address);
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/// @notice This function let us know how many tokens an user has
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/// @dev Everybody can call this function. It does not execute any code on blockchain, only reads
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/// @param _addressUser The address of the user to know the number of tokens
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/// @return The number of tokens of the user
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function userBalanceOf(address _addressUser) external view returns (uint256);
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/// @notice This function let us know how many tokens of an owner an user has
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/// @dev Everybody can call this function. It does not execute any code on blockchain, only reads
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/// @param _addressUser The address of the user to know the number of tokens
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/// @param _addressOwner The address of the owner of the tokens
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/// @return The number of tokens of an owner that an user can use
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function userBalanceOfAnOwner(address _addressUser, address _addressOwner) external view returns (uint256);
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}
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