31 lines
892 B
JavaScript
31 lines
892 B
JavaScript
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const { httpRpcUrl, aggregatorAddress } = require('./config')
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const Web3 = require('web3')
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const web3 = new Web3(httpRpcUrl)
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const aggregator = new web3.eth.Contract(require('../abis/Aggregator.abi.json'), aggregatorAddress)
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const ens = require('eth-ens-namehash')
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class ENSResolver {
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constructor() {
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this.addresses = {}
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}
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async resolve(domains) {
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if (!Array.isArray(domains)) {
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domains = [domains]
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}
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const unresolved = domains.filter(d => !this.addresses[d])
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if (unresolved.length) {
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const resolved = await aggregator.methods.bulkResolve(unresolved.map(ens.hash)).call()
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for (let i = 0; i < resolved.length; i++) {
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this.addresses[domains[i]] = resolved[i]
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}
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}
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const addresses = domains.map(domain => this.addresses[domain])
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return addresses.length === 1 ? addresses[0] : addresses
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}
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}
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module.exports = ENSResolver
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