EnvelopwNFT721
This contract is based on the classic ERC-721 standard token contract. A detailed description of the methods of the standard can be found in the documentation: https://docs.openzeppelin.com/contracts/4.x/api/token/erc721.
The contract is used for mint, burn and wNFT ERC-721 transfers that the WrapperBaseV1 protocol contract creates for users. The mint, burn methods are defined in the EnvelopwNFT721 contract, taking into account the logic of the protocol. Only the WrapperBaseV1 contract can call the mint, burn methods. No other address can call these methods.
Method wnftInfo
The method returns all data about wNFT.
Input method call parameters:
_tokenId
uint256
tokenId of the wrapped NFT
A description of the returned data types can be found in the LibEnvelopTypes.sol contact, ETypes library.
Returned values:
value
ETypes.WNFT
Wrapped wNFT data
ETypes.WNFT
inAsset
ETypes.AssetItem
Data on the original NFT
collateral
ETypes.AssetItem[]
Data on collateral
unWrapDestination
address
Recipient address of the original NFT and collateral after unwrap of wNFT - filled by default with a null address
fees
ETypes.Fee[]
Array of information on transfer fees
locks
ETypes.Lock[]
Array of information on unwrap conditions (blocking by time, by amount of fees collected, etc ...)
royalties
ETypes.Royalty[]
An array of information on royalty beneficiaries
rules
bytes2
wNFT rules of conduct (e.g. 1111, where right to left pos1 - prohibition to unwrap
pos2 - prohibition to reverse wNFT
pos3 - prohibition to transfer wNFT
pos4 - prohibition to add something to collateral)
ETypes.AssetItem
asset
ETypes.Asset
Data on the type and contract of tokens transferred to the WrapperBaseV1 contract for wrapped NFT or added to collateral of wrapped NFT
tokenId
uint256
Token number
(if a empty was wrapped
it will return 0;
if the collateral was topped up with ERC-20 tokens, it will return 0;
if the collateral was topped up with native tokens, it will return 0).
amount
amount
Number of NFT copies or number of tokens( for ERC-1155 - a value other than 0, for ERC-20 - value other than 0
for native tokens - value other than 0
for ERC-721 - 0)
ETypes.Asset
assetType
ETypes.AssetType
Value from the token type dictionary
contractAddress
address
Address of token contract transferred to WrapperBaseV1 protocol contract as collateral or original NFT
ETypes.AssetType:
0 - empty
1 - native token
2 - ERC-20
3 - ERC-721
4 - ERC-1155
ETypes.Fee
feeType
bytes1
Fee type - 0
param
uint256
Amount of fee
token
address
Transfer fee token contract address
ETypes.Lock
lockType
bytes1
Blocking type:
0x00 - blocking by time
0x01 - blocking by volume of accumulated transfer fee for wNFT 0x02 - count of max collateral slots for wNFT
param
uint256
Value
ETypes.Royalty
beneficiary
address
Royalty beneficiary address
percent
uint16
Value - no more than 10000 (100%)
Method tokenURI
Method returns reference to metadata of original NFT for wNFT. If a empty was wrapped, the metadata generated by the EnvelopwNFT721 contract will be returned.
Input method call parameters:
_tokenId
uint256
tokenId wrapNFT
Returned values:
uri_
string
Link to metadata
TransferFrom method
The method works based on the ERC-721 method. Link to documentation (https://docs.openzeppelin.com/contracts/4.x/api/token/erc721#IERC721-transferFrom-address-address-uint256-) When a transfer is made, a transfer fee is calculated if the creator of wNFT has made the appropriate settings for it. The fee is held in ERC-20 tokens whose smart contract address the creator of wNFT specified when he wrapped. The fee can be allocated to royalty beneficiaries, or part or all of the fee can be added to wNFT's collateral.
The method does not return anything.
Input method call parameters:
from
address
Address from which wNFT is being transferred
to
address
The address to which the wNFT is transferred
tokenId
uint256
tokenId wNFT
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