whoisens-lib/dist/esm/lib/Registrar.js

Whois for ENS (Ethereum Name Service) lookup service

import utils from '../utils/index.js';
import jsonRCP from '../utils/json-rpc.js';
import ENSRoot from './ENSRoot.js';
import BaseClass from './BaseClass.js';
import { EthAddressType, InvalidEthNameError, NameIsNotRegisteredError } from './types.js';
export default class Registrar extends BaseClass {
    constructor(address) {
        super();
        if (utils.getAddressType(address) !== EthAddressType.name)
            throw new InvalidEthNameError(address, 'Ethereum name should be provided');
        this.address = address;
        this.ltd = utils.getLTDfromDomain(this.address);
        const addressTopLabel = utils.getLabelsFromDomain(address).pop();
        this.addressHash = utils.hash(addressTopLabel);
    }
    async getOwner() {
        await this.init();
        const method = 'ownerOf(uint256)';
        const methodId = utils.getMethodID(method);
        const data = `${methodId}${this.addressHash}`;
        const result = await jsonRCP.getInstance().makeRequest({
            to: this.contractAddress,
            data
        });
        const isResult = utils.isResult(result.result);
        return this.returnResult({
            contractAddress: this.contractAddress,
            contractMethod: method,
            payload: data,
            parameters: {
                methodId,
                addressHash: this.addressHash
            },
            jsonRCPResult: result,
            result: utils.normalizeHex(result.result),
            resultError: !isResult && new NameIsNotRegisteredError()
        });
    }
    async getExpirationDate() {
        await this.init();
        const method = 'nameExpires(uint256)';
        const methodId = utils.getMethodID(method);
        const data = [methodId, this.addressHash].join('');
        const result = await jsonRCP.getInstance().makeRequest({
            to: this.contractAddress,
            data
        });
        const timestamp = Number(result.result);
        const isResult = utils.isResult(timestamp);
        return this.returnResult({
            contractAddress: this.contractAddress,
            contractMethod: method,
            payload: data,
            parameters: {
                methodId,
                addressHash: this.addressHash
            },
            jsonRCPResult: result,
            result: timestamp,
            resultError: !isResult && new NameIsNotRegisteredError()
        });
    }
    async findContractAddress() {
        const ensRoot = new ENSRoot();
        return (await ensRoot.getController(this.ltd)).result;
    }
    async init() {
        this.contractAddress = await this.findContractAddress();
    }
}
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