faz-um-pix
Version:
Biblioteca em JavaScript para gerar transações utilizando o sistema PIX do BACEN.
139 lines (138 loc) • 7.08 kB
JavaScript
;
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;
return g = { next: verb(0), "throw": verb(1), "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 (_) 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.Pix = void 0;
var crcTable_1 = require("./crcTable");
var qrcode = require("yaqrcode");
/**
*
* @param {string} merchant_account
* @param {string} merchant_name
* @param {string} merchant_city
* @param {number} transaction_amount
* @param {string} info_adic
* @param {boolean} return_qrcode
*/
function Pix(merchant_account, merchant_name, merchant_city, transaction_amount, info_adic, return_qrcode) {
if (return_qrcode === void 0) { return_qrcode = false; }
return __awaiter(this, void 0, void 0, function () {
var format, gui, chave, info, account, category, currency, amount, country, name, city, additional, crc16, payload, crc, j, i, c, crcCalc, qrCodePix;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
format = "000201";
gui = "0014br.gov.bcb.pix";
chave = "01" +
(merchant_account.length < 10
? "0" + merchant_account.length
: merchant_account.length) +
merchant_account;
info = info_adic.length > 0
? "02" +
(info_adic.length < 10 ? "0" + info_adic.length : info_adic.length) +
(info_adic.length > 50 ? info_adic.substring(0, 50) : info_adic)
: "";
account = "26" + (gui.length + chave.length + info.length) + gui + chave + info;
category = "52040000";
currency = "5303986";
amount = ("" + transaction_amount).length > 0
? "54" +
(("" + transaction_amount).length < 10
? "0" + ("" + transaction_amount).length
: ("" + transaction_amount).length) +
transaction_amount
: "";
country = "5802BR";
name = merchant_name.length > 25 ? merchant_name.substring(0, 25) : merchant_name;
name = "59" + (name.length < 10 ? "0" + name.length : name.length) + name; // Merchant Name
city = merchant_city.length > 25 ? merchant_city.substring(0, 25) : merchant_city;
city = "60" + (city.length < 10 ? "0" + city.length : city.length) + city; // Merchant City
additional = "62070503***";
crc16 = "6304";
payload = format +
account +
category +
currency +
amount +
country +
name +
city +
additional +
crc16;
crc = 0xffff;
for (i = 0; i < payload.length; i++) {
c = payload.charCodeAt(i);
if (c > 255)
throw new RangeError();
j = (c ^ (crc >> 8)) & 0xff;
crc = crcTable_1.crcTable[j] ^ (crc << 8);
}
crcCalc = ((crc ^ 0) & 0xffff).toString(16).toUpperCase();
qrCodePix = payload +
(crcCalc.length == 4
? ""
: crcCalc.length == 3
? "0"
: crcCalc.length == 2
? "00"
: "000") +
crcCalc;
if (!return_qrcode) return [3 /*break*/, 2];
return [4 /*yield*/, generateQrCode(qrCodePix)];
case 1:
qrCodePix = _a.sent();
_a.label = 2;
case 2: return [2 /*return*/, qrCodePix];
}
});
});
}
exports.Pix = Pix;
/**
*
* @param {string} payload
*/
function generateQrCode(payload) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
return [2 /*return*/, qrcode(payload, {
size: 400
})];
});
});
}