solpay
Version:
Solana Payment API.
243 lines (242 loc) • 12.6 kB
JavaScript
"use strict";
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
t[p] = s[p];
}
return t;
};
return __assign.apply(this, arguments);
};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g = Object.create((typeof Iterator === "function" ? Iterator : Object).prototype);
return g.next = verb(0), g["throw"] = verb(1), g["return"] = verb(2), typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (g && (g = 0, op[0] && (_ = 0)), _) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.createOrder = createOrder;
exports.orderPaid = orderPaid;
exports.confirmOrderPaid = confirmOrderPaid;
var coin_1 = require("./coin");
var web3_js_1 = require("@solana/web3.js");
var connection_1 = require("./connection");
var uuid_1 = require("uuid");
var tx_1 = require("./tx");
var DUST = 1e-10;
var orders = new Map();
/**
* Example:
* ```
const order = await createOrder({
pay_to: "BSzG62Khqw5pbbWPmoe8iZekExekFQBJmjYhiXhcVvtS",
coin_type: "SOL", // Optional: "USDT", "USDC"
coin_amount: 0.00001,
timeout: 60_000,
});
* ```
* @see {@link orderPaid()}
*/
function createOrder(config) {
return __awaiter(this, void 0, void 0, function () {
var id, payTo, coinAmount, resolve, reject, timeout, account, _a, balance, lastTx, subscription;
var _this = this;
var _b;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
id = (0, uuid_1.v7)(), payTo = new web3_js_1.PublicKey(config.pay_to), coinAmount = config.coin_amount;
orders.set(id, new Promise(function () {
var args = [];
for (var _i = 0; _i < arguments.length; _i++) {
args[_i] = arguments[_i];
}
return resolve = args[0], reject = args[1], args;
}));
if (!(config.coin_type == "SOL")) return [3 /*break*/, 1];
_a = payTo;
return [3 /*break*/, 3];
case 1: return [4 /*yield*/, (0, coin_1.getATA)(payTo, config.coin_type)];
case 2:
_a = _c.sent();
_c.label = 3;
case 3:
account = _a;
return [4 /*yield*/, (0, coin_1.getCoinBalance)(payTo, config.coin_type, config.commitment)];
case 4:
balance = _c.sent();
return [4 /*yield*/, (0, connection_1.getConnection)().getSignaturesForAddress(account, { limit: 1 }, config.commitment)];
case 5:
lastTx = (_b = (_c.sent())[0]) === null || _b === void 0 ? void 0 : _b.signature;
subscription = (0, connection_1.getConnection)().onAccountChange(account, function (accountInfo, context) { return __awaiter(_this, void 0, void 0, function () {
var balanceUpdated, balanceChange, txs, tx, parsedTx, change;
var _a;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
if (!accountInfo) return [3 /*break*/, 5];
return [4 /*yield*/, (0, coin_1.getCoinBalance)(payTo, config.coin_type, config.commitment)];
case 1:
balanceUpdated = _b.sent();
balanceChange = balanceUpdated - balance;
balance = balanceUpdated;
if (balanceChange + DUST < coinAmount)
return [2 /*return*/];
return [4 /*yield*/, (0, connection_1.getConnection)().getSignaturesForAddress(account, { until: lastTx }, config.commitment)];
case 2:
txs = _b.sent();
lastTx = ((_a = txs[0]) === null || _a === void 0 ? void 0 : _a.signature) || lastTx;
tx = txs.find(function (tx) { var _a, _b; return ((_b = (_a = tx.memo) === null || _a === void 0 ? void 0 : _a.match(/^\[\d+\] (.*)/)) === null || _b === void 0 ? void 0 : _b[1]) == id; });
if (!tx) return [3 /*break*/, 5];
return [4 /*yield*/, (0, connection_1.getConnection)().getParsedTransaction(tx.signature, config.commitment)];
case 3:
parsedTx = _b.sent();
if (!parsedTx) return [3 /*break*/, 5];
return [4 /*yield*/, (0, tx_1.parseTxBalanceChange)(parsedTx, payTo, config.coin_type)];
case 4:
change = _b.sent();
if (change + DUST < coinAmount)
return [2 /*return*/];
resolve(parsedTx);
(0, connection_1.getConnection)().removeAccountChangeListener(subscription);
clearTimeout(timeout);
_b.label = 5;
case 5: return [2 /*return*/];
}
});
}); }, { commitment: config.commitment });
timeout = setTimeout(function () {
(0, connection_1.getConnection)().removeAccountChangeListener(subscription);
reject(new Error("timeout"));
}, config.timeout);
return [2 /*return*/, {
id: id,
info: config,
}];
}
});
});
}
/**
* Example:
* ```
* const parsedTransactionWithMeta = await orderPaid(order);
*
* if (parsedTransactionWithMeta) {
* const signature = parsedTransactionWithMeta.transaction.signatures[0];
* }
* ```
* @see {@link createOrder()}
*/
function orderPaid(order) {
return __awaiter(this, void 0, void 0, function () {
var parsedTransactionWithMeta, err_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 2, 3, 4]);
return [4 /*yield*/, orders.get(order.id)];
case 1:
parsedTransactionWithMeta = _a.sent();
return [2 /*return*/, parsedTransactionWithMeta];
case 2:
err_1 = _a.sent();
// Timeout, unpaid
return [2 /*return*/, undefined];
case 3:
orders.delete(order.id);
return [7 /*endfinally*/];
case 4: return [2 /*return*/];
}
});
});
}
/**
* Validate order via blockchain.
*
* See also: https://github.com/anza-xyz/solana-pay/blob/master/core/src/validateTransfer.ts
*/
function confirmOrderPaid(order_1) {
return __awaiter(this, arguments, void 0, function (order, _options) {
var limit, owner, reference, _a, options, finality, txs, tx, parsedTx, change, err_2;
if (_options === void 0) { _options = {}; }
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
_b.trys.push([0, 8, , 9]);
limit = 200;
owner = new web3_js_1.PublicKey(order.info.pay_to);
if (!(order.info.coin_type == "SOL")) return [3 /*break*/, 1];
_a = owner;
return [3 /*break*/, 3];
case 1: return [4 /*yield*/, (0, coin_1.getATA)(owner, order.info.coin_type)];
case 2:
_a = _b.sent();
_b.label = 3;
case 3:
reference = _a;
options = __assign(__assign({}, _options), { limit: limit });
finality = order.info.commitment;
return [4 /*yield*/, (0, connection_1.getConnection)().getSignaturesForAddress(reference, options, finality)];
case 4:
txs = _b.sent();
tx = txs.find(function (tx) { var _a, _b; return ((_b = (_a = tx.memo) === null || _a === void 0 ? void 0 : _a.match(/^\[\d+\] (.*)/)) === null || _b === void 0 ? void 0 : _b[1]) == order.id; });
if (!tx) return [3 /*break*/, 7];
return [4 /*yield*/, (0, connection_1.getConnection)().getParsedTransaction(tx.signature, finality)];
case 5:
parsedTx = (_b.sent()) || undefined;
if (!parsedTx) return [3 /*break*/, 7];
return [4 /*yield*/, (0, tx_1.parseTxBalanceChange)(parsedTx, owner, order.info.coin_type)];
case 6:
change = _b.sent();
if (change + DUST >= order.info.coin_amount)
return [2 /*return*/, parsedTx];
_b.label = 7;
case 7:
if (txs.length >= limit) {
return [2 /*return*/, confirmOrderPaid(order, __assign(__assign({}, options), { before: txs[txs.length - 1].signature }))];
}
else {
return [2 /*return*/, undefined];
}
return [3 /*break*/, 9];
case 8:
err_2 = _b.sent();
return [2 /*return*/, undefined];
case 9: return [2 /*return*/];
}
});
});
}