Unicode C++

PayPal - Capture a Previously Authorized Payment

See more PayPal Examples

Captures a previously authorized payment.

Note: This example requires Chilkat v9.5.0.65 or greater.

Unicode C++

#include <CkJsonObjectW.h>
#include <CkStringBuilderW.h>
#include <CkRestW.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  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)
    CkJsonObjectW jsonToken;
    jsonToken.LoadFile(L"qa_data/tokens/paypal.json");

    //  Build the Authorization request header field value.
    CkStringBuilderW sbAuth;
    //  token_type should be "Bearer"
    sbAuth.Append(jsonToken.stringOf(L"token_type"));
    sbAuth.Append(L" ");
    sbAuth.Append(jsonToken.stringOf(L"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.
    CkRestW rest;
    bool bAutoReconnect = true;
    success = rest.Connect(L"api.sandbox.paypal.com",443,true,bAutoReconnect);
    if (success != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    //  ----------------------------------------------------------------------------------------------
    //  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.
    CkJsonObjectW json;
    json.put_EmitCompact(false);
    json.UpdateString(L"amount.currency",L"USD");
    json.UpdateString(L"amount.total",L"4.54");
    json.UpdateBool(L"is_final_capture",true);
    wprintf(L"%s\n",json.emit());

    //  The JSON created by the above code:

    //  	{ 
    //  	  "amount": { 
    //  	    "currency": "USD",
    //  	    "total": "4.54"
    //  	  },
    //  	  "is_final_capture": true
    //  	}

    rest.AddHeader(L"Authorization",sbAuth.getAsString());
    rest.AddHeader(L"Content-Type",L"application/json");

    //  To capture payment, make a call to /v1/payments/authorization/[authorization_id]/capture with the authorization ID in the URI.
    //  See PayPal Authorize Payment for sample code to create the authorization.
    //  The "7X8332687A4929542" comes from the "transactions[0].related_resources[0].authorization.id" part of the authorization response.

    CkStringBuilderW sbPath;
    sbPath.Append(L"/v1/payments/authorization/[authorization_id]/capture");
    int numReplacements = sbPath.Replace(L"[authorization_id]",L"7X8332687A4929542");

    //  Send the POST request containign the JSON in the request body, and get the JSON response.
    CkStringBuilderW sbJsonRequest;
    json.put_EmitCompact(true);
    json.EmitSb(sbJsonRequest);
    CkStringBuilderW sbJsonResponse;
    success = rest.FullRequestSb(L"POST",sbPath.getAsString(),sbJsonRequest,sbJsonResponse);
    if (success != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    json.put_EmitCompact(false);
    json.LoadSb(sbJsonResponse);

    wprintf(L"Response Status Code = %d\n",rest.get_ResponseStatusCode());

    //  IMPORTANT: In most PayPal examples, the return status code is 201.
    //  For this particular call, PayPal returns status code 200.

    //  Did we get a 200 success response?
    if (rest.get_ResponseStatusCode() != 200) {
        wprintf(L"%s\n",json.emit());
        wprintf(L"Failed.\n");
        return;
    }

    //  Sample JSON response is shown below.
    wprintf(L"%s\n",json.emit());

    wprintf(L"success\n");

    //  ------------------------------------------------
    //  A sample JSON response:

    //  	{ 
    //  	  "id": "1LY5310469661362J",
    //  	  "create_time": "2016-11-24T00:40:50Z",
    //  	  "update_time": "2016-11-24T00:40:54Z",
    //  	  "amount": { 
    //  	    "total": "4.54",
    //  	    "currency": "USD"
    //  	  },
    //  	  "is_final_capture": true,
    //  	  "state": "completed",
    //  	  "reasonCode": "None",
    //  	  "parent_payment": "PAY-2CY489250W145633HLA3DK3Y",
    //  	  "transaction_fee": { 
    //  	    "value": "0.43",
    //  	    "currency": "USD"
    //  	  },
    //  	  "links": [
    //  	    { 
    //  	      "href": "https://api.sandbox.paypal.com/v1/payments/capture/1LY5310469661362J",
    //  	      "rel": "self",
    //  	      "method": "GET"
    //  	    },
    //  	    { 
    //  	      "href": "https://api.sandbox.paypal.com/v1/payments/capture/1LY5310469661362J/refund",
    //  	      "rel": "refund",
    //  	      "method": "POST"
    //  	    },
    //  	    { 
    //  	      "href": "https://api.sandbox.paypal.com/v1/payments/authorization/7X8332687A4929542",
    //  	      "rel": "authorization",
    //  	      "method": "GET"
    //  	    },
    //  	    { 
    //  	      "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-2CY489250W145633HLA3DK3Y",
    //  	      "rel": "parent_payment",
    //  	      "method": "GET"
    //  	    }
    //  	  ]
    //  	}
    }