IranKish Payment Gateway API for Go

The package is used for handling payments through Iranian IranKish payment gateway.

Based on IPG_TechnicalGuide.V9.pdf

For older version with SOAP check soap branch.

Install

go get -u github.com/aliforever/go-irankish-api

Usage

Variables:

terminalID := "" // <- Place your terminal ID 
acceptorID := "" // <- Place your acceptor ID
passphrase := "" // <- Place your Passphrase
publicKey := "" // <- Place your Public Key

ik, err := irankish.New(terminalID, acceptorID, passphrase, publicKey)
if err != nil {
    panic(err)
}

MakeToken for normal Purchase:

paymentID := ""
requestID := ""
amount := 0
revertUri := ""

token, err := ik.MakePurchaseToken(paymentID, requestID, amount, revertUri)
if err != nil {
	panic(err)
}

fmt.Println(token)

After making token you can get a simple redirecting form as a html to redirect users to the gateway:

htmlForm := token.RedirectForm() // <- Token Received from Make Token Method

Also, you can either handle incoming POST requests from the gateway yourself or listen to package's incoming callbacks. Here's an example to listen and verify payments using package's callback

http.HandleFunc("/payment_callback", ik.CallbackHandler) // Registers a http handler for callbacks
go http.ListenAndServe(":8001", nil) // Run your http server

for request := range ik.IncomingCallbacks() {
    input, err := request.ParseUserInput()
    if err != nil {
        request.WriteResponse(http.StatusBadRequest, []byte(err.Error()))
        return
    }
    
    fmt.Println(fmt.Sprintf("%+v", input))
    
    if input.RetrievalReferenceNumber != "" && input.SystemTraceAuditNumber != "" {
        result, err := ik.VerifyPurchase(input.Token, input.RetrievalReferenceNumber, input.SystemTraceAuditNumber)
        if err != nil {
            request.WriteResponse(http.StatusBadRequest, []byte(err.Error()))
            fmt.Println(err)
            continue
        }
	
        fmt.Println(result)
    }
    
    request.WriteResponse(http.StatusOK, []byte("ok"))
}

-- Make sure to write the response or it will hang on the goroutine

VerifyPayment:

token := ""
referenceNumber := ""
auditNumber := ""

result, err := ik.VerifyPurchase(token, referenceNumber, auditNumber)
if err != nil {
    request.WriteResponse(http.StatusBadRequest, []byte(err.Error()))
    panic(err)
}

fmt.Println(result)