PureBasic
PureBasic
PayPal - Authorize a Payment
See more PayPal Examples
Creates an authorization for a payment. This is for the case where the payment will first be authorized, and then captured at a later date. (In other words, the buyer is providing his/her credit card information now, and the actual charge (capture) will take place at a later time.)Creating the authorization is the same as creating "sale" payment, except the intent is set to "authorize" instead of "sale".
This example requests an authorization for a credit card payment (using a credit card ID previoulsy stored in the PayPal vault).
Note: This example requires Chilkat v9.5.0.65 or greater.
Chilkat PureBasic Downloads
IncludeFile "CkStringBuilder.pb"
IncludeFile "CkJsonObject.pb"
IncludeFile "CkRest.pb"
Procedure ChilkatExample()
success.i = 0
; Note: Requires Chilkat v9.5.0.65 or greater.
; This requires the Chilkat API to have been previously unlocked.
; See Global Unlock Sample for sample code.
; Load our previously obtained access token. (see PayPal OAuth2 Access Token)
jsonToken.i = CkJsonObject::ckCreate()
If jsonToken.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
CkJsonObject::ckLoadFile(jsonToken,"qa_data/tokens/paypal.json")
; Build the Authorization request header field value.
sbAuth.i = CkStringBuilder::ckCreate()
If sbAuth.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
; token_type should be "Bearer"
CkStringBuilder::ckAppend(sbAuth,CkJsonObject::ckStringOf(jsonToken,"token_type"))
CkStringBuilder::ckAppend(sbAuth," ")
CkStringBuilder::ckAppend(sbAuth,CkJsonObject::ckStringOf(jsonToken,"access_token"))
; Make the initial connection.
; A single REST object, once connected, can be used for many PayPal REST API calls.
; The auto-reconnect indicates that if the already-established HTTPS connection is closed,
; then it will be automatically re-established as needed.
rest.i = CkRest::ckCreate()
If rest.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
bAutoReconnect.i = 1
success = CkRest::ckConnect(rest,"api.sandbox.paypal.com",443,1,bAutoReconnect)
If success <> 1
Debug CkRest::ckLastErrorText(rest)
CkJsonObject::ckDispose(jsonToken)
CkStringBuilder::ckDispose(sbAuth)
CkRest::ckDispose(rest)
ProcedureReturn
EndIf
; ----------------------------------------------------------------------------------------------
; The code above this comment could be placed inside a function/subroutine within the application
; because the connection does not need to be made for every request. Once the connection is made
; the app may send many requests..
; ----------------------------------------------------------------------------------------------
; Build the JSON containing the transaction information.
json.i = CkJsonObject::ckCreate()
If json.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
CkJsonObject::setCkEmitCompact(json, 0)
CkJsonObject::ckUpdateString(json,"intent","authorize")
CkJsonObject::ckUpdateString(json,"payer.payment_method","credit_card")
CkJsonObject::ckUpdateString(json,"payer.funding_instruments[0].credit_card_token.credit_card_id","CARD-52W84623JH8043102LA3CLGA")
CkJsonObject::ckUpdateString(json,"payer.funding_instruments[0].credit_card_token.payer_id","user12345")
CkJsonObject::ckUpdateString(json,"transactions[0].amount.total","6.70")
CkJsonObject::ckUpdateString(json,"transactions[0].amount.currency","USD")
CkJsonObject::ckUpdateString(json,"transactions[0].description","This is the payment transaction description.")
Debug CkJsonObject::ckEmit(json)
; The JSON created by the above code is this:
; {
; "intent": "authorize",
; "payer": {
; "payment_method": "credit_card",
; "funding_instruments": [
; {
; "credit_card_token": {
; "credit_card_id": "CARD-52W84623JH8043102LA3CLGA",
; "payer_id": "user12345"
; }
; }
; ]
; },
; "transactions": [
; {
; "amount": {
; "total": "6.70",
; "currency": "USD"
; },
; "description": "This is the payment transaction description."
; }
; ]
; }
CkRest::ckAddHeader(rest,"Authorization",CkStringBuilder::ckGetAsString(sbAuth))
CkRest::ckAddHeader(rest,"Content-Type","application/json")
; Send the POST request containign the JSON in the request body, and get the JSON response.
sbJsonRequest.i = CkStringBuilder::ckCreate()
If sbJsonRequest.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
CkJsonObject::setCkEmitCompact(json, 1)
CkJsonObject::ckEmitSb(json,sbJsonRequest)
sbJsonResponse.i = CkStringBuilder::ckCreate()
If sbJsonResponse.i = 0
Debug "Failed to create object."
ProcedureReturn
EndIf
success = CkRest::ckFullRequestSb(rest,"POST","/v1/payments/payment",sbJsonRequest,sbJsonResponse)
If success <> 1
Debug CkRest::ckLastErrorText(rest)
CkJsonObject::ckDispose(jsonToken)
CkStringBuilder::ckDispose(sbAuth)
CkRest::ckDispose(rest)
CkJsonObject::ckDispose(json)
CkStringBuilder::ckDispose(sbJsonRequest)
CkStringBuilder::ckDispose(sbJsonResponse)
ProcedureReturn
EndIf
CkJsonObject::setCkEmitCompact(json, 0)
CkJsonObject::ckLoadSb(json,sbJsonResponse)
Debug "Response Status Code = " + Str(CkRest::ckResponseStatusCode(rest))
; Did we get a 201 success response?
If CkRest::ckResponseStatusCode(rest) <> 201
Debug CkJsonObject::ckEmit(json)
Debug "Failed."
CkJsonObject::ckDispose(jsonToken)
CkStringBuilder::ckDispose(sbAuth)
CkRest::ckDispose(rest)
CkJsonObject::ckDispose(json)
CkStringBuilder::ckDispose(sbJsonRequest)
CkStringBuilder::ckDispose(sbJsonResponse)
ProcedureReturn
EndIf
; Sample JSON response is shown below.
Debug CkJsonObject::ckEmit(json)
; The authorization ID found in the related_resources is used to capture the payment at a later time.
Debug "authorization id: " + CkJsonObject::ckStringOf(json,"transactions[0].related_resources[0].authorization.id")
Debug "success"
; ------------------------------------------------
; A sample JSON response:
; {
; "id": "PAY-2CY489250W145633HLA3DK3Y",
; "create_time": "2016-11-24T00:33:51Z",
; "update_time": "2016-11-24T00:33:58Z",
; "state": "approved",
; "intent": "authorize",
; "payer": {
; "payment_method": "credit_card",
; "funding_instruments": [
; {
; "credit_card_token": {
; "credit_card_id": "CARD-52W84623JH8043102LA3CLGA",
; "payer_id": "user12345",
; "last4": "9974",
; "type": "visa",
; "expire_month": "9",
; "expire_year": "2021"
; }
; }
; ]
; },
; "transactions": [
; {
; "amount": {
; "total": "6.70",
; "currency": "USD",
; "details": {
; "subtotal": "6.70"
; }
; },
; "description": "This is the payment transaction description.",
; "related_resources": [
; {
; "authorization": {
; "id": "7X8332687A4929542",
; "create_time": "2016-11-24T00:33:51Z",
; "update_time": "2016-11-24T00:33:58Z",
; "amount": {
; "total": "6.70",
; "currency": "USD",
; "details": {
; "subtotal": "6.70"
; }
; },
; "state": "authorized",
; "parent_payment": "PAY-2CY489250W145633HLA3DK3Y",
; "valid_until": "2016-12-23T00:33:51Z",
; "links": [
; {
; "href": "https://api.sandbox.paypal.com/v1/payments/authorization/7X8332687A4929542",
; "rel": "self",
; "method": "GET"
; },
; {
; "href": "https://api.sandbox.paypal.com/v1/payments/authorization/7X8332687A4929542/capture",
; "rel": "capture",
; "method": "POST"
; },
; {
; "href": "https://api.sandbox.paypal.com/v1/payments/authorization/7X8332687A4929542/void",
; "rel": "void",
; "method": "POST"
; },
; {
; "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-2CY489250W145633HLA3DK3Y",
; "rel": "parent_payment",
; "method": "GET"
; }
; ],
; "processor_response": {
; "avs_code": "X",
; "cvv_code": "M"
; },
; "fmf_details": {}
; }
; }
; ]
; }
; ],
; "links": [
; {
; "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-2CY489250W145633HLA3DK3Y",
; "rel": "self",
; "method": "GET"
; }
; ]
; }
CkJsonObject::ckDispose(jsonToken)
CkStringBuilder::ckDispose(sbAuth)
CkRest::ckDispose(rest)
CkJsonObject::ckDispose(json)
CkStringBuilder::ckDispose(sbJsonRequest)
CkStringBuilder::ckDispose(sbJsonResponse)
ProcedureReturn
EndProcedure