(Swift 3,4,5...) Paynow.pl -- Make a Payment Request

Make a payment request POST with prepared message on Paynow payment request endpoint.

For more information, see https://docs.paynow.pl/#section/Payments/Make-a-payment

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let http = CkoHttp()!
    var success: Bool

    // Implements the following CURL command:

    // curl --request POST 'https://api.sandbox.paynow.pl/v1/payments' \
    // -H 'Content-Type: application/json' \
    // -H 'Api-Key: c12c386b-650b-43db-9430-d84fc05d9433' \
    // -H 'Signature: aYPCytCoc+/wFgqHZJjgBCi20omXTn0yzm9LysJgnFo=' \
    // -H 'Idempotency-Key: 59c6dd26-f905-487b-96c9-fd1d2bd76885' \
    // --data-raw '{
    //     "amount": 45671,
    //     "externalId": "234567898654",
    //     "description": "Test transaction",
    //     "buyer": {
    //         "email": "jan.kowalski@melements.pl"
    //     }
    // }'

    // Use the following online tool to generate HTTP code from a CURL command
    // Convert a cURL Command to HTTP Source Code

    // Use this online tool to generate code from sample JSON:
    // Generate Code to Create JSON

    // The following JSON is sent in the request body.

    // {
    //   "amount": 45671,
    //   "externalId": "234567898654",
    //   "description": "Test transaction",
    //   "buyer": {
    //     "email": "jan.kowalski@melements.pl"
    //   }
    // }

    let json = CkoJsonObject()!
    json.updateInt("amount", value: 45671)
    json.update("externalId", value: "234567898654")
    json.update("description", value: "Test transaction")
    json.update("buyer.email", value: "jan.kowalski@melements.pl")

    var myApiAccessKey: String? = "c12c386b-650b-43db-9430-d84fc05d9433"
    var mySigCalcKey: String? = "b758f20d-ba92-44fa-acca-f57e99787b9d"

    // Calculate the Signature header.
    let crypt = CkoCrypt2()!
    crypt.macAlgorithm = "hmac"
    crypt.encodingMode = "base64"
    crypt.setMacKeyString(mySigCalcKey)
    crypt.hashAlgorithm = "SHA-256"
    var messageBody: String? = json.emit()
    var signature: String? = crypt.macStringENC(messageBody)

    http.setRequestHeader("Idempotency-Key", value: crypt.generateUuid())
    http.setRequestHeader("Api-Key", value: myApiAccessKey)
    http.setRequestHeader("Signature", value: signature)
    http.setRequestHeader("Content-Type", value: "application/json")
    http.accept = "application/json"

    var resp: CkoHttpResponse? = http.postJson3("https://api.sandbox.paynow.pl/v1/payments", contentType: "application/json", json: json)
    if http.lastMethodSuccess == false {
        print("\(http.lastErrorText!)")
        return
    }

    print("Response body:")
    print("\(resp!.bodyStr!)")

    // Sample response:
    // {
    //   "redirectUrl": "https://paywall.sandbox.paynow.pl/NOA0-YJ9-Y1P-29V?token=eyJraWQiOiJhMD ... L60wk",
    //   "paymentId": "NOA0-YJ9-Y1P-29V",
    //   "status": "NEW"
    // }

    let jsonResp = CkoJsonObject()!
    jsonResp.load(resp!.bodyStr)
    var redirectUrl: String? = json.string(of: "redirectUrl")
    var paymentId: String? = json.string(of: "paymentId")
    var status: String? = json.string(of: "status")

}