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(PureBasic) PayPal - Authorize a PaymentCreates 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.
IncludeFile "CkStringBuilder.pb" IncludeFile "CkJsonObject.pb" IncludeFile "CkRest.pb" Procedure ChilkatExample() ; 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.i = 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 |
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