gray-market-js/rental_listings/RentalListingCreator.js

Utility library for the Gray Market rental marketplace

const { ethers } = require("ethers");
const erc721ABI = require("./abi/ERC721.json");
const MessageHelper = require("./signer/MessageHelper");

class RentalListingCreator {
  constructor() {}
  
  async createListing(signerOrProvider, chainId, verifyingContract, listing, proxyContractAddress) {
    const signable = MessageHelper.getSignable(chainId, verifyingContract, listing);
    const contract = new ethers.Contract(listing.collectionAddress, erc721ABI, signerOrProvider);
    const isApproved = await contract.isApprovedForAll(await signerOrProvider.getAddress(), proxyContractAddress);
    if(!isApproved) {
      alert("NFT is not approved here, a TX should be asked from the user for that");
      //await contract.setApprovalForAll(proxyContractAddress, true);
    }
    
    const signature = await signerOrProvider._signTypedData(signable.domain, signable.types, listing);
    return {
      signable: signable,
      signed: signature
    }
  }
}
module.exports = RentalListingCreator;