@elrondnetwork/erdjs-data-api-client/lib/src/utils/native.auth/native.auth.signer.js

MultiversX Data API client

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.NativeAuthSigner = void 0;
const tslib_1 = require("tslib");
const out_1 = require("@elrondnetwork/erdjs-walletcore/out");
const out_2 = require("@elrondnetwork/erdjs/out");
const native_auth_client_1 = require("@elrondnetwork/native-auth-client");
const moment_1 = tslib_1.__importDefault(require("moment"));
const config_1 = require("./config");
class NativeAuthSigner {
    constructor(config) {
        this.config = Object.assign(new config_1.NativeAuthSignerConfig(), config);
        this.nativeAuthClient = new native_auth_client_1.NativeAuthClient(this.config);
    }
    async getToken() {
        const currentDate = (0, moment_1.default)().add(1, 'minutes').toDate();
        if (this.accessTokenInfo && currentDate <= this.accessTokenInfo.expiryDate) {
            return this.accessTokenInfo;
        }
        const userSigner = this.getUserSigner();
        const signableToken = await this.getSignableToken();
        const signerAddress = userSigner.getAddress().bech32();
        const signableMessage = this.getSignableMessage(signerAddress, signableToken);
        await userSigner.sign(signableMessage);
        const signature = signableMessage.getSignature();
        const token = this.nativeAuthClient.getToken(signerAddress, signableToken, signature.hex());
        const expiryDate = (0, moment_1.default)().add(this.config.expirySeconds, 'seconds').toDate();
        return this.accessTokenInfo = {
            token,
            expiryDate,
        };
    }
    getUserSigner() {
        if (this.userSigner) {
            return this.userSigner;
        }
        if (!this.config.signerPrivateKey) {
            throw new Error('Missing SignerPrivateKey in NativeAuthSigner.');
        }
        const pemKey = this.config.signerPrivateKey;
        return this.userSigner = out_1.UserSigner.fromPem(pemKey);
    }
    getSignableToken() {
        return this.nativeAuthClient.initialize();
    }
    getSignableMessage(signerAddress, signableToken) {
        const messageToSign = `${signerAddress}${signableToken}{}`;
        return new out_2.SignableMessage({
            message: Buffer.from(messageToSign, 'utf8'),
        });
    }
}
exports.NativeAuthSigner = NativeAuthSigner;
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