next-auth-hashpack/dist/api/authInitializer.js

Authenticate with Hashpack wallet using NextAuthJs library.

"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
exports.authInitializer = void 0;
var sdk_1 = require("@hashgraph/sdk");
var hashpackProvider_1 = require("./hashpackProvider");
/**
 * call this function from a route that spouse to initiate the authentication with hashpack wallet. it signs a data and pass it to client.
 * @param req {NextApiRequest}
 * @param res {NextApiResponse}
 * @param ServerAccountId {string} Sever's account Id on Hedera Hashgraph network
 * @param ServerPrivateKey {PrivateKey} Server's account private key on Hedera Hashgraph
 * @param data {any} the data you are going to sign
 * @param network {'testnet' | 'mainnet' | previewnet} using Hedera's testnet or mainnet
 * @param preInitializingCallback runs after validation, receives accountId and optionally original data
 * @returns {Promise<void>}
 */
function authInitializer(req, res, ServerAccountId, ServerPrivateKey, data, network, preInitializingCallback, debug) {
    var _a, _b, _c, _d, _e, _f, _g;
    if (network === void 0) { network = "testnet"; }
    if (debug === void 0) { debug = false; }
    return __awaiter(this, void 0, void 0, function () {
        var csrfToken, csrfCookie, client, pk, bytes, signature, responseDate, err_1;
        return __generator(this, function (_h) {
            switch (_h.label) {
                case 0:
                    _h.trys.push([0, 3, , 4]);
                    if (req.method !== 'POST') {
                        (0, hashpackProvider_1.debugging)(debug, "method wasn't allowed: ", req.method);
                        return [2 /*return*/, res.status(405).send("Method not allowed.")];
                    }
                    if (!((_a = req.body) === null || _a === void 0 ? void 0 : _a.accountId) || !(0, hashpackProvider_1.isValidHederaAccount)((_b = req.body) === null || _b === void 0 ? void 0 : _b.accountId)) {
                        (0, hashpackProvider_1.debugging)(debug, "Invalid hedera account ID: ", (_c = req.body) === null || _c === void 0 ? void 0 : _c.accountId);
                        throw new Error("Invalid hedera account ID.");
                    }
                    (0, hashpackProvider_1.debugging)(debug, "reading csrt-token", (_d = req.body) === null || _d === void 0 ? void 0 : _d.accountId);
                    csrfToken = req.headers['x-csrf-token'] || ((_e = req.body) === null || _e === void 0 ? void 0 : _e.csrfToken);
                    csrfCookie = req.cookies['__Host-next-auth.csrf-token'] || req.cookies['next-auth.csrf-token'];
                    (0, hashpackProvider_1.debugging)(debug, "crf token: ", csrfToken, " csrf cookie: ", csrfCookie);
                    if (!csrfToken || ((_g = (_f = (csrfCookie)) === null || _f === void 0 ? void 0 : _f.split(/[|%]/)) === null || _g === void 0 ? void 0 : _g[0]) !== csrfToken) {
                        (0, hashpackProvider_1.debugging)(debug, "crf token and cookie didn't match.");
                        throw new Error("Invalid token");
                    }
                    if (!preInitializingCallback) return [3 /*break*/, 2];
                    (0, hashpackProvider_1.debugging)(debug, "preInitializingCallback is about to run");
                    return [4 /*yield*/, preInitializingCallback({ accountId: req.body.accountId, network: network, data: data })];
                case 1:
                    _h.sent();
                    (0, hashpackProvider_1.debugging)(debug, "preInitializingCallback ran");
                    _h.label = 2;
                case 2:
                    client = network === 'testnet' ? sdk_1.Client.forTestnet() : sdk_1.Client.forMainnet();
                    (0, hashpackProvider_1.debugging)(debug, "hedera client was set for network: ", network);
                    pk = sdk_1.PrivateKey.fromString(ServerPrivateKey);
                    (0, hashpackProvider_1.debugging)(debug, "Private key instance was created from string", (0, hashpackProvider_1.truncatePrivateKey)(ServerPrivateKey));
                    client.setOperator(sdk_1.AccountId.fromString(ServerAccountId), pk);
                    (0, hashpackProvider_1.debugging)(debug, "hedera client operator was set: ", ServerAccountId);
                    bytes = new Uint8Array(Buffer.from(JSON.stringify(data)));
                    (0, hashpackProvider_1.debugging)(debug, "bytes was generated: ", bytes);
                    signature = pk.sign(bytes);
                    responseDate = {
                        signature: signature,
                        serverSigningAccount: ServerAccountId,
                        payload: data,
                    };
                    (0, hashpackProvider_1.debugging)(debug, "response was sent: ", responseDate);
                    return [2 /*return*/, res.status(200).send(JSON.stringify(responseDate))];
                case 3:
                    err_1 = _h.sent();
                    return [2 /*return*/, res.status(403).send((err_1 === null || err_1 === void 0 ? void 0 : err_1.message) ? err_1.message : "something went wrong. try again")];
                case 4: return [2 /*return*/];
            }
        });
    });
}
exports.authInitializer = authInitializer;