paynow
Version:
Node.JS SDK for Zimbabwe's Leading Payment Gateway, Paynow
303 lines • 12.8 kB
JavaScript
"use strict";
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.");
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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;
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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; }
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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.Paynow = exports.InitResponse = exports.StatusResponse = void 0;
var payment_1 = require("./types/payment");
var constants_1 = require("./constants");
var axios_1 = require("axios");
var StatusResponse = (function () {
function StatusResponse(data) {
if (data.status.toLowerCase() === constants_1.RESPONSE_ERROR) {
this.error = data.error;
}
else {
this.reference = data.reference;
this.amount = data.amount;
this.paynowReference = data.paynowreference;
this.pollUrl = data.pollurl;
this.status = data.status;
}
}
return StatusResponse;
}());
exports.StatusResponse = StatusResponse;
var InitResponse = (function () {
function InitResponse(data) {
this.status = data.status.toLowerCase();
this.success = this.status === constants_1.RESPONSE_OK;
this.hasRedirect = typeof data.browserurl !== "undefined";
this.isInnbucks = false;
if (!this.success) {
this.error = data.error;
}
else {
this.pollUrl = data.pollurl;
if (this.hasRedirect) {
this.redirectUrl = data.browserurl;
}
if (typeof data.instructions !== "undefined") {
this.instructions = data.instructions;
}
if (typeof data.authorizationcode !== "undefined") {
this.isInnbucks = true;
this.innbucks_info = [];
this.innbucks_info.push({
authorizationcode: data.authorizationcode,
deep_link_url: constants_1.INNBUCKS_DEEPLINK_PREFIX + data.authorizationcode,
qr_code: constants_1.GOOGLE_QR_PREFIX + data.authorizationcode,
expires_at: data.authorizationexpires,
});
}
}
}
return InitResponse;
}());
exports.InitResponse = InitResponse;
var Paynow = (function () {
function Paynow(integrationId, integrationKey, resultUrl, returnUrl) {
this.integrationId = integrationId;
this.integrationKey = integrationKey;
this.resultUrl = resultUrl;
this.returnUrl = returnUrl;
}
Paynow.prototype.send = function (payment) {
return this.init(payment);
};
Paynow.prototype.sendMobile = function (payment, phone, method) {
return this.initMobile(payment, phone, method);
};
Paynow.prototype.createPayment = function (reference, authEmail) {
return new payment_1.default(reference, authEmail);
};
Paynow.prototype.fail = function (message) {
throw new Error(message);
};
Paynow.prototype.init = function (payment) {
var _this = this;
this.validate(payment);
var data = this.build(payment);
return (0, axios_1.default)({
method: "POST",
url: constants_1.URL_INITIATE_TRANSACTION,
data: data,
headers: {
'Content-Type': 'application/x-www-form-urlencoded',
},
}).then(function (response) {
return _this.parse(response.data);
})
.catch(function (err) {
console.log("An error occured while initiating transaction", err);
});
};
Paynow.prototype.initMobile = function (payment, phone, method) {
return __awaiter(this, void 0, void 0, function () {
var data, response, err_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
this.validate(payment);
if (!this.isValidEmail(payment.authEmail))
this.fail("Invalid email. Please ensure that you pass a valid email address when initiating a mobile payment");
data = this.buildMobile(payment, phone, method);
_a.label = 1;
case 1:
_a.trys.push([1, 3, , 4]);
return [4, (0, axios_1.default)({
method: "POST",
url: constants_1.URL_INITIATE_MOBILE_TRANSACTION,
data: data,
headers: {
'Content-Type': 'application/x-www-form-urlencoded',
},
})];
case 2:
response = _a.sent();
return [2, this.parse(response.data)];
case 3:
err_1 = _a.sent();
console.log("An error occured while initiating transaction", err_1);
return [3, 4];
case 4: return [2];
}
});
});
};
Paynow.prototype.isValidEmail = function (emailAddress) {
if (!emailAddress || emailAddress.length === 0)
return false;
return /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(emailAddress);
};
Paynow.prototype.parse = function (response) {
if (typeof response === "undefined") {
return null;
}
if (response) {
var parsedResponseURL = this.parseQuery(response);
if (parsedResponseURL.status.toString().toLowerCase() !== constants_1.RESPONSE_ERROR &&
!this.verifyHash(parsedResponseURL)) {
throw new Error("Hashes do not match!");
}
return new InitResponse(parsedResponseURL);
}
else {
throw new Error("An unknown error occurred");
}
};
Paynow.prototype.generateHash = function (values, integrationKey) {
var sha512 = require("js-sha512").sha512;
var string = "";
for (var _i = 0, _a = Object.keys(values); _i < _a.length; _i++) {
var key = _a[_i];
if (key !== "hash") {
string += values[key];
}
}
string += integrationKey.toLowerCase();
return sha512(string).toUpperCase();
};
Paynow.prototype.verifyHash = function (values) {
if (typeof values["hash"] === "undefined") {
return false;
}
else {
return values["hash"] === this.generateHash(values, this.integrationKey);
}
};
Paynow.prototype.urlEncode = function (url) {
return encodeURI(url);
};
Paynow.prototype.urlDecode = function (url) {
return decodeURIComponent((url + "")
.replace(/%(?![\da-f]{2})/gi, function () {
return "%25";
})
.replace(/\+/g, "%20"));
};
Paynow.prototype.parseQuery = function (queryString) {
var query = {};
var pairs = (queryString[0] === "?" ? queryString.substr(1) : queryString).split("&");
for (var i = 0; i < pairs.length; i++) {
var pair = pairs[i].split("=");
query[this.urlDecode(pair[0])] = this.urlDecode(pair[1] || "");
}
return query;
};
Paynow.prototype.build = function (payment) {
var data = {
resulturl: this.resultUrl,
returnurl: this.returnUrl,
reference: payment.reference,
amount: payment.total().toString(),
id: this.integrationId,
additionalinfo: payment.info(),
authemail: typeof payment.authEmail === "undefined" ? "" : payment.authEmail,
status: "Message",
};
for (var _i = 0, _a = Object.keys(data); _i < _a.length; _i++) {
var key = _a[_i];
if (key === "hash")
continue;
data[key] = this.urlEncode(data[key]);
}
data["hash"] = this.generateHash(data, this.integrationKey);
return data;
};
Paynow.prototype.buildMobile = function (payment, phone, method) {
var data = {
resulturl: this.resultUrl,
returnurl: this.returnUrl,
reference: payment.reference,
amount: payment.total().toString(),
id: this.integrationId,
additionalinfo: payment.info(),
authemail: payment.authEmail,
phone: phone,
method: method,
status: "Message",
};
for (var _i = 0, _a = Object.keys(data); _i < _a.length; _i++) {
var key = _a[_i];
if (key === "hash")
continue;
data[key] = this.urlEncode(data[key]);
}
data["hash"] = this.generateHash(data, this.integrationKey);
return data;
};
Paynow.prototype.pollTransaction = function (url) {
return __awaiter(this, void 0, void 0, function () {
var response;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4, (0, axios_1.default)({
method: "POST",
url: url,
data: null,
})];
case 1:
response = _a.sent();
return [2, this.parse(response.data)];
}
});
});
};
Paynow.prototype.parseStatusUpdate = function (response) {
if (response.length > 0) {
response = this.parseQuery(response);
if (!this.verifyHash(response)) {
throw new Error("Hashes do not match!");
}
return new StatusResponse(response);
}
else {
throw new Error("An unknown error occurred");
}
};
Paynow.prototype.validate = function (payment) {
if (payment.items.length() <= 0) {
this.fail("You need to have at least one item in cart");
}
if (payment.total() <= 0) {
this.fail("The total should be greater than zero");
}
};
return Paynow;
}());
exports.Paynow = Paynow;
//# sourceMappingURL=paynow.js.map