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getERC721.js
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getERC721.js
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import ethers from 'ethers';
import fs from 'fs';
import getAndPinFromPublicGateways from './utils/getAndPinFromPublicGateways.js';
import checkDirectories from './utils/checkDirectories.js';
// ERC721 Transfer event https://docs.openzeppelin.com/contracts/4.x/api/token/erc721#IERC721-Transfer-address-address-uint256-
const abi = [{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"}]
const provider = new ethers.providers.JsonRpcProvider(process.env.RPC);
const contract = new ethers.Contract(process.env.ADDRESS,abi,provider);
const fromId = process.env.FROM_ID;
async function main(){
checkDirectories();
console.log('Getting all URIs from NFT contract');
let filter = contract.filters.Transfer(0x0000000000000000000000000000000000000000,null,null);
let results = await contract.queryFilter(filter,0,'latest');
if(fromId){
console.log(`Filtering from id ${fromId}`);
results = results.filter(res => {
return(Number(res.args.id) >= Number(fromId));
})
}
console.log(`Total of ${results.length} to be pinned`);
console.log('Getting cids from metadata and images, pin and save local');
let i = 1;
for(let res of results){
const id = res.args.id;
const tokenURI = await contract.tokenURI(id);
const cid = tokenURI.replace("ipfs://","");
console.log(`Getting data from token id ${id}, cid: ${cid}`);
const savedObj = await getAndPinFromPublicGateways(cid);
console.log(savedObj);
console.log(`Done ${i} from ${results.length}`);
i = i++;
}
}
main();