(DataFlex) Payeezy Place Temp Authorization Hold on Buyer’s Credit Card

Demonstrates how to place a temporary authorization hold for the desired amount on the buyer’s credit card. You can Capture the authorized amount on completion of service or Void/Refund the transaction as required.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoCrypt
    Handle hoPrng
    Boolean iSuccess
    String sApiKey
    String sApiSecret
    String sToken
    String sNonce
    Handle hoDtNow
    Handle hoSbTimestamp
    String sTimestamp
    Handle hoJson
    Handle hoSbHmacData
    String sHexHash
    Handle hoSbBase64Hash
    Handle hoHttp
    String sUrl
    Variant vResp
    Handle hoResp
    String sTemp1
    Integer iTemp1
    Boolean bTemp1

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    Get Create (RefClass(cComChilkatCrypt2)) To hoCrypt
    If (Not(IsComObjectCreated(hoCrypt))) Begin
        Send CreateComObject of hoCrypt
    End
    Get Create (RefClass(cComChilkatPrng)) To hoPrng
    If (Not(IsComObjectCreated(hoPrng))) Begin
        Send CreateComObject of hoPrng
    End

    // An API key such as y6pWAJNyJyjGv66IsVuWnklkKUPFbb0a
    Move "my_api_key" To sApiKey
    // An API secret such as 86fbae7030253af3cd15faef2a1f4b67353e41fb6799f576b5093ae52901e6f7
    Move "my_api_secret" To sApiSecret
    // A token such as fdoa-a480ce8951daa73262734cf102641994c1e55e7cdf4c02b6
    Move "my_merchant_token" To sToken

    // The nonce is a random number (bytes), something like "6057786719490086000"
    Get ComGenRandom Of hoPrng 8 "decimal" To sNonce
    Showln "nonce = " sNonce

    Get Create (RefClass(cComCkDateTime)) To hoDtNow
    If (Not(IsComObjectCreated(hoDtNow))) Begin
        Send CreateComObject of hoDtNow
    End
    Get ComSetFromCurrentSystemTime Of hoDtNow To iSuccess
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbTimestamp
    If (Not(IsComObjectCreated(hoSbTimestamp))) Begin
        Send CreateComObject of hoSbTimestamp
    End
    // Get the epoch timestamp in seconds
    Get ComGetAsUnixTimeStr Of hoDtNow False To sTemp1
    Get ComAppend Of hoSbTimestamp sTemp1 To iSuccess
    // Change it to milliseconds
    Get ComAppend Of hoSbTimestamp "000" To iSuccess
    // The timestamp is a number similar to this: 1546011905000 (which is a timestamp taken on 28-Dec-2018).
    Get ComGetAsString Of hoSbTimestamp To sTimestamp
    Showln "timestamp = " sTimestamp

    // Generate the following JSON request body:
    // {
    //   "merchant_ref": "Astonishing-Sale",
    //   "transaction_type": "authorize",
    //   "method": "credit_card",
    //   "amount": "1299",
    //   "currency_code": "USD",
    //   "credit_card": {
    //     "type": "visa",
    //     "cardholder_name": "John Smith",
    //     "card_number": "4788250000028291",
    //     "exp_date": "1020",
    //     "cvv": "123"
    //   }
    // }

    Get Create (RefClass(cComChilkatJsonObject)) To hoJson
    If (Not(IsComObjectCreated(hoJson))) Begin
        Send CreateComObject of hoJson
    End
    Get ComUpdateString Of hoJson "merchant_ref" "Astonishing-Sale" To iSuccess
    Get ComUpdateString Of hoJson "transaction_type" "authorize" To iSuccess
    Get ComUpdateString Of hoJson "method" "credit_card" To iSuccess
    Get ComUpdateString Of hoJson "amount" "1299" To iSuccess
    Get ComUpdateString Of hoJson "currency_code" "USD" To iSuccess
    Get ComUpdateString Of hoJson "credit_card.type" "visa" To iSuccess
    Get ComUpdateString Of hoJson "credit_card.cardholder_name" "John Smith" To iSuccess
    Get ComUpdateString Of hoJson "credit_card.card_number" "4788250000028291" To iSuccess
    Get ComUpdateString Of hoJson "credit_card.exp_date" "1020" To iSuccess
    Get ComUpdateString Of hoJson "credit_card.cvv" "123" To iSuccess
    Set ComEmitCompact Of hoJson To False
    Get ComEmit Of hoJson To sTemp1
    Showln sTemp1

    // string hashData = apiKey + nonce + timestamp + token + jsonString;
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbHmacData
    If (Not(IsComObjectCreated(hoSbHmacData))) Begin
        Send CreateComObject of hoSbHmacData
    End
    Get ComAppend Of hoSbHmacData sApiKey To iSuccess
    Get ComAppend Of hoSbHmacData sNonce To iSuccess
    Get ComAppend Of hoSbHmacData sTimestamp To iSuccess
    Get ComAppend Of hoSbHmacData sToken To iSuccess
    Get ComEmit Of hoJson To sTemp1
    Get ComAppend Of hoSbHmacData sTemp1 To iSuccess

    // HMAC the data to produce a hex string.
    Set ComEncodingMode Of hoCrypt To "hexlower"
    Set ComMacAlgorithm Of hoCrypt To "hmac"
    Get ComSetMacKeyString Of hoCrypt sApiSecret To iSuccess
    Set ComHashAlgorithm Of hoCrypt To "sha256"
    Set ComCharset Of hoCrypt To "utf-8"
    Get ComGetAsString Of hoSbHmacData To sTemp1
    Get ComMacStringENC Of hoCrypt sTemp1 To sHexHash
    Showln "hexHash = " sHexHash

    // Now base64 encode the hex string:
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbBase64Hash
    If (Not(IsComObjectCreated(hoSbBase64Hash))) Begin
        Send CreateComObject of hoSbBase64Hash
    End
    Get ComAppend Of hoSbBase64Hash sHexHash To iSuccess
    Get ComEncode Of hoSbBase64Hash "base64" "utf-8" To iSuccess

    Showln "This is the Authorization header to be sent with the payeezy request:"
    Get ComGetAsString Of hoSbBase64Hash To sTemp1
    Showln "Authorization: " sTemp1

    // -----------------------------------------------------------
    // Now that we have the value for the Authorization header, send the POST containing the JSON.

    Get Create (RefClass(cComChilkatHttp)) To hoHttp
    If (Not(IsComObjectCreated(hoHttp))) Begin
        Send CreateComObject of hoHttp
    End

    Set ComAccept Of hoHttp To "*/*"
    Set ComUserAgent Of hoHttp To ""
    Get ComGetAsString Of hoSbBase64Hash To sTemp1
    Send ComSetRequestHeader To hoHttp "Authorization" sTemp1
    Send ComSetRequestHeader To hoHttp "apikey" sApiKey
    Send ComSetRequestHeader To hoHttp "nonce" sNonce
    Send ComSetRequestHeader To hoHttp "timestamp" sTimestamp
    Send ComSetRequestHeader To hoHttp "token" sToken

    Set ComSessionLogFilename Of hoHttp To "qa_output/payeezy.txt"

    Move "https://api-cert.payeezy.com/v1/transactions" To sUrl
    Get ComEmit Of hoJson To sTemp1
    Get ComPostJson2 Of hoHttp sUrl "application/json" sTemp1 To vResp
    If (IsComObject(vResp)) Begin
        Get Create (RefClass(cComChilkatHttpResponse)) To hoResp
        Set pvComObject Of hoResp To vResp
    End
    Get ComLastMethodSuccess Of hoHttp To bTemp1
    If (bTemp1 <> True) Begin
        Get ComLastErrorText Of hoHttp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComStatusCode Of hoResp To iTemp1
    Showln "response status code = " iTemp1
    Get ComBodyStr Of hoResp To sTemp1
    Get ComLoad Of hoJson sTemp1 To iSuccess
    Get ComEmit Of hoJson To sTemp1
    Showln sTemp1
    Send Destroy of hoResp

    // Sample JSON response:

    // {
    //   "correlation_id": "228.4604632998994",
    //   "transaction_status": "approved",
    //   "validation_status": "success",
    //   "transaction_type": "authorize",
    //   "transaction_id": "ET175628",
    //   "transaction_tag": "2313721985",
    //   "method": "credit_card",
    //   "amount": "1299",
    //   "currency": "USD",
    //   "cvv2": "M",
    //   "token": {
    //     "token_type": "FDToken",
    //     "token_data": {
    //       "value": "9732261336638291"
    //     }
    //   },
    //   "card": {
    //     "type": "visa",
    //     "cardholder_name": "John Smith",
    //     "card_number": "8291",
    //     "exp_date": "1020"
    //   },
    //   "bank_resp_code": "100",
    //   "bank_message": "Approved",
    //   "gateway_resp_code": "00",
    //   "gateway_message": "Transaction Normal"
    // }
    // 

    Get ComStringOf Of hoJson "correlation_id" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "transaction_status" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "validation_status" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "transaction_type" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "transaction_id" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "transaction_tag" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "method" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "amount" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "currency" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "cvv2" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "token.token_type" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "token.token_data.value" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "card.type" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "card.cardholder_name" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "card.card_number" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "card.exp_date" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "bank_resp_code" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "bank_message" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "gateway_resp_code" To sTemp1
    Showln sTemp1
    Get ComStringOf Of hoJson "gateway_message" To sTemp1
    Showln sTemp1


End_Procedure