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2.1.setMetadata.js
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2.1.setMetadata.js
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const {
NftFactory,
Nft,
ProviderInstance,
getHash,
Aquarius
} = require('@oceanprotocol/lib');
const { SHA256 } = require('crypto-js');
const Web3 = require('web3');
const { web3Provider, oceanConfig } = require('./config');
const { ddo, files } = require('./data');
const web3 = new Web3(web3Provider);
const aquarius = new Aquarius(oceanConfig.metadataCacheUri);
const nft = new Nft(web3);
const providerUrl = oceanConfig.providerUri;
const Factory = new NftFactory(oceanConfig.erc721FactoryAddress, web3);
const createDataNFT = async () => {
const accounts = await web3.eth.getAccounts();
const publisherAccount = accounts[0];
const nftParams = {
name: '72120Bundle',
symbol: '72Bundle',
templateIndex: 1,
tokenURI: 'https://example.com',
transferable: true,
owner: publisherAccount
};
const erc20Params = {
templateIndex: 1,
cap: '100000',
feeAmount: '0',
paymentCollector: '0x0000000000000000000000000000000000000000',
feeToken: '0x0000000000000000000000000000000000000000',
minter: publisherAccount,
mpFeeAddress: '0x0000000000000000000000000000000000000000'
};
const result = await Factory.createNftWithErc20(
publisherAccount,
nftParams,
erc20Params
);
const erc721Address = result.events.NFTCreated.returnValues[0];
const datatokenAddress = result.events.TokenCreated.returnValues[0];
return {
erc721Address,
datatokenAddress
};
};
const setMetadata = async (erc721Address, datatokenAddress) => {
const accounts = await web3.eth.getAccounts();
const publisherAccount = accounts[0];
// create the files encrypted string
let providerResponse = await ProviderInstance.encrypt(files, providerUrl);
ddo.services[0].files = await providerResponse;
ddo.services[0].datatokenAddress = datatokenAddress;
// update ddo and set the right did
ddo.nftAddress = erc721Address;
const chain = await web3.eth.getChainId();
ddo.id = `did:op:${SHA256(
web3.utils.toChecksumAddress(erc721Address) + chain.toString(10)
)}`;
providerResponse = await ProviderInstance.encrypt(ddo, providerUrl);
const encryptedResponse = await providerResponse;
const metadataHash = getHash(JSON.stringify(ddo));
await nft.setMetadata(
erc721Address,
publisherAccount,
0,
providerUrl,
'',
'0x2',
encryptedResponse,
`0x${metadataHash}`
);
await aquarius.waitForAqua(ddo.id);
console.log(`Resolved asset did [${ddo.id}]from aquarius.`);
};
createDataNFT()
.then(({ erc721Address, datatokenAddress }) => {
console.log(`DataNft address ${erc721Address}`);
console.log(`Datatoken address ${datatokenAddress}`);
setMetadata(erc721Address, datatokenAddress).then(() => {
console.log('Metadata set.');
process.exit();
});
})
.catch((err) => {
console.error(err);
process.exit(1);
});