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Get Wallet Information

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getAddress()

To view a user’s Face Wallet address, please do the following:

If a user is not logged in to the Face Wallet when the getAddress() function of Ethers.js is called, the user will proceed to log in through the Face Wallet modal. 

import { Face, Network } from '@haechi-labs/face-sdk';
import { ethers } from 'ethers';

const face = new Face({
  network: Network.KROMA_SEPOLIA, 
  apiKey: 'YOUR_DAPP_API_KEY'
});
const provider = new ethers.providers.Web3Provider(face.getEthLikeProvider());
const signer = provider.getSigner();

const userAddress = await signer.getAddress();

getBalance()

You can view the balance of coins that are used as transaction fees in the blockchain as follows:

If the user is not logged in to Face Wallet when the getBalance() function of Ethers.js is called, the user will proceed to log in through the Face Wallet modal.

import { Face, Network } from '@haechi-labs/face-sdk';
import { ethers } from 'ethers';

const face = new Face({
  network: Network.KROMA_SEPOLIA, 
  apiKey: 'YOUR_DAPP_API_KEY'
});
const provider = new ethers.providers.Web3Provider(face.getEthLikeProvider());
const signer = provider.getSigner();

// Get user's Kroma wallet address
const userAddress = await signer.getAddress();
const balance = ethers.utils.formatEther(
	// Get user's ETH balance in wei
	await provider.getBalance(userAddress)
);

balanceOf()

The balance of the ERC20 token or NFTs can be viewed using Smart Contract.

import { Face, Network } from '@haechi-labs/face-sdk';
import { ethers } from 'ethers';

const face = new Face({
  network: Network.KROMA_SEPOLIA, 
  apiKey: 'YOUR_DAPP_API_KEY'
});
const provider = new ethers.providers.Web3Provider(face.getEthLikeProvider());
const signer = provider.getSigner();

const userAddress = await signer.getAddress();

// ERC20 smart contract
const contractABI = '[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"}]';
const conatractAddress = '0x55d398326f99059ff775485246999027b3197955';
const contract = new ethers.Contract(contractAddress, contractABI, signer);

// Get user's ERC20 token balance
const balance = await conatract.balanceOf(userAddress);

import { Face, Network } from '@haechi-labs/face-sdk';
import { ethers } from 'ethers';

const face = new Face({
  network: Network.KROMA_SEPOLIA, 
  apiKey: 'YOUR_DAPP_API_KEY'
});
const provider = new ethers.providers.Web3Provider(face.getEthLikeProvider());
const signer = provider.getSigner();

const userAddress = await signer.getAddress();

// ERC721 smart contract
const contractABI = '[{"constant":false,"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"mint","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"constant":true,"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"}]';
const conatractAddress = '0xed5af388653567af2f388e6224dc7c4b3241c544';
const contract = new ethers.Contract(contractAddress, contractABI, signer);

// Get user's ERC721 token balance
const balance = await conatract.balanceOf(userAddress);

Updated about 1 year ago