(Chilkat2-Python) 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.

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import sys
import chilkat2

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

crypt = chilkat2.Crypt2()
prng = chilkat2.Prng()

# An API key such as y6pWAJNyJyjGv66IsVuWnklkKUPFbb0a
apiKey = "my_api_key"
# An API secret such as 86fbae7030253af3cd15faef2a1f4b67353e41fb6799f576b5093ae52901e6f7
apiSecret = "my_api_secret"
# A token such as fdoa-a480ce8951daa73262734cf102641994c1e55e7cdf4c02b6
token = "my_merchant_token"

# The nonce is a random number (bytes), something like "6057786719490086000"
nonce = prng.GenRandom(8,"decimal")
print("nonce = " + nonce)

dtNow = chilkat2.CkDateTime()
dtNow.SetFromCurrentSystemTime()
sbTimestamp = chilkat2.StringBuilder()
# Get the epoch timestamp in seconds
sbTimestamp.Append(dtNow.GetAsUnixTimeStr(False))
# Change it to milliseconds
sbTimestamp.Append("000")
# The timestamp is a number similar to this: 1546011905000 (which is a timestamp taken on 28-Dec-2018).
timestamp = sbTimestamp.GetAsString()
print("timestamp = " + timestamp)

# 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"
#   }
# }

json = chilkat2.JsonObject()
json.UpdateString("merchant_ref","Astonishing-Sale")
json.UpdateString("transaction_type","authorize")
json.UpdateString("method","credit_card")
json.UpdateString("amount","1299")
json.UpdateString("currency_code","USD")
json.UpdateString("credit_card.type","visa")
json.UpdateString("credit_card.cardholder_name","John Smith")
json.UpdateString("credit_card.card_number","4788250000028291")
json.UpdateString("credit_card.exp_date","1020")
json.UpdateString("credit_card.cvv","123")
json.EmitCompact = False
print(json.Emit())

# string hashData = apiKey + nonce + timestamp + token + jsonString;
sbHmacData = chilkat2.StringBuilder()
sbHmacData.Append(apiKey)
sbHmacData.Append(nonce)
sbHmacData.Append(timestamp)
sbHmacData.Append(token)
sbHmacData.Append(json.Emit())

# HMAC the data to produce a hex string.
crypt.EncodingMode = "hexlower"
crypt.MacAlgorithm = "hmac"
crypt.SetMacKeyString(apiSecret)
crypt.HashAlgorithm = "sha256"
crypt.Charset = "utf-8"
hexHash = crypt.MacStringENC(sbHmacData.GetAsString())
print("hexHash = " + hexHash)

# Now base64 encode the hex string:
sbBase64Hash = chilkat2.StringBuilder()
sbBase64Hash.Append(hexHash)
sbBase64Hash.Encode("base64","utf-8")

print("This is the Authorization header to be sent with the payeezy request:")
print("Authorization: " + sbBase64Hash.GetAsString())

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

http = chilkat2.Http()

http.Accept = "*/*"
http.UserAgent = ""
http.SetRequestHeader("Authorization",sbBase64Hash.GetAsString())
http.SetRequestHeader("apikey",apiKey)
http.SetRequestHeader("nonce",nonce)
http.SetRequestHeader("timestamp",timestamp)
http.SetRequestHeader("token",token)

http.SessionLogFilename = "qa_output/payeezy.txt"

url = "https://api-cert.payeezy.com/v1/transactions"
# resp is a CkHttpResponse
resp = http.PostJson2(url,"application/json",json.Emit())
if (http.LastMethodSuccess != True):
    print(http.LastErrorText)
    sys.exit()

print("response status code = " + str(resp.StatusCode))
json.Load(resp.BodyStr)
print(json.Emit())

# 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"
# }
# 

print(json.StringOf("correlation_id"))
print(json.StringOf("transaction_status"))
print(json.StringOf("validation_status"))
print(json.StringOf("transaction_type"))
print(json.StringOf("transaction_id"))
print(json.StringOf("transaction_tag"))
print(json.StringOf("method"))
print(json.StringOf("amount"))
print(json.StringOf("currency"))
print(json.StringOf("cvv2"))
print(json.StringOf("token.token_type"))
print(json.StringOf("token.token_data.value"))
print(json.StringOf("card.type"))
print(json.StringOf("card.cardholder_name"))
print(json.StringOf("card.card_number"))
print(json.StringOf("card.exp_date"))
print(json.StringOf("bank_resp_code"))
print(json.StringOf("bank_message"))
print(json.StringOf("gateway_resp_code"))
print(json.StringOf("gateway_message"))