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UniPayment Go Client

A Go client for the UniPayment Client API.

This SDK provides a convenient abstraction of UniPayment's Gateway API and allows developers to focus on payment flow/e-commerce integration rather than on the specific details of client-server interaction using the raw API.

Getting Started

Integrate Tutorial

Before using the UniPayment API, sign up for your API key.

You can also use our test tokens for testing and integration. Documentation.

Installation

Install Go SDK

Download and Install the GO SDK from https://go.dev/doc/install

Initializing UniPayment client

var (
    authParams = AuthParams{ClientID: "your client id",
    ClientSecret: "your client secret",
    AppID:        "your app id"}
    apiClient = NewAPIClient(NewConfiguration(authParams)).UnipaymentApiClient
)

Create an invoice

Reference：https://unipayment.readme.io/reference/create_invoice

createInvoiceRequest := CreateInvoiceRequest{
    Title:         "MacBook Pro",
    Description:   "MacBook Pro(256G)",
    Lang:          "en",
    AppId:         authParams.AppID,
    PriceAmount:   2.0,
    PriceCurrency: "USD",
    PayCurrency:   "USDT",
    NotifyUrl:     "https://demo-payment.requestcatcher.com/test",
    RedirectUrl:   "https://www.example.com",
    OrderId:       "ORDER_123456",
    ExtArgs:       "Merchant Pass Through Data",
    ConfirmSpeed:  "Medium",
}
response, _, err := apiClient.CreateInvoice(createInvoiceRequest)

CreateInvoiceResponse

{
  "code": "OK",
  "msg": "",
  "data": {
    "app_id": "cee1b9e2-d90c-4b63-9824-d621edb38012",
    "invoice_id": "Dj2mNCXXWCGKT89kcU8NJn",
    "order_id": "ORDER_123456",
    "price_amount": 2.0,
    "price_currency": "USD",
    "network": null,
    "address": null,
    "pay_amount": 0.0,
    "pay_currency": null,
    "exchange_rate": 0.0,
    "paid_amount": 0.0,
    "create_time": "2022-09-14T06:31:57",
    "expiration_time": "2022-09-14T06:36:57",
    "confirm_speed": 2,
    "status": 1,
    "error_status": 0,
    "invoice_url": "https://sandbox-app.unipayment.io/i/Dj2mNCXXWCGKT89kcU8NJn"
  }
}

Handle IPN

Reference：https://unipayment.readme.io/reference/ipn-check

Invoice Status: https://unipayment.readme.io/reference/invoice-status

IPNs (Instant Payment Notifications) are sent to the notify_url when order status is changed to paid, confirmed and complete.

notify := "{\"ipn_type\":\"invoice\",\"event\":\"invoice_created\",\"app_id\":\"cee1b9e2-d90c-4b63-9824-d621edb38012\",\"invoice_id\":\"12wQquUmeCPUx3qmp3aHnd\",\"order_id\":\"ORDER_123456\",\"price_amount\":2.0,\"price_currency\":\"USD\",\"network\":null,\"address\":null,\"pay_currency\":null,\"pay_amount\":0.0,\"exchange_rate\":0.0,\"paid_amount\":0.0,\"confirmed_amount\":0.0,\"refunded_price_amount\":0.0,\"create_time\":\"2022-09-14T04:57:54.5599307Z\",\"expiration_time\":\"2022-09-14T05:02:54.559933Z\",\"status\":\"New\",\"error_status\":\"None\",\"ext_args\":\"Merchant Pass Through Data\",\"transactions\":null,\"notify_id\":\"fd58cedd-67c6-4053-ae65-2f6fb09a7d2c\",\"notify_time\":\"0001-01-01T00:00:00\"}"
response, _, err := apiClient.CheckIPN(notify)

IPN notify

{
	"ipn_type": "invoice",
	"event": "invoice_expired",
	"app_id": "cee1b9e2-d90c-4b63-9824-d621edb38012",
	"invoice_id": "3Q7fyLnB2YNhUDW1fFNyEz",
	"order_id": "20",
	"price_amount": 6.0,
	"price_currency": "SGD",
	"network": null,
	"address": null,
	"pay_currency": null,
	"pay_amount": 0.0,
	"exchange_rate": 0.0,
	"paid_amount": 0.0,
	"confirmed_amount": 0.0,
	"refunded_price_amount": 0.0,
	"create_time": "2022-09-12T03:36:03",
	"expiration_time": "2022-09-12T03:41:03",
	"status": "Expired",
	"error_status": "None",
	"ext_args": null,
	"transactions": null,
	"notify_id": "8ccd2b61-226b-48e5-99b8-acb1f350313e",
	"notify_time": "2022-09-12T03:56:10.5852752Z"
}

Run Example

1.Get source code form GitHub

git clone https://github.com/UniCryptoLab/UniPaymentClient.Go.git

2.Run project in GoLand

License

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.