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(C++) PayPal - Capture a Previously Authorized Payment

Captures a previously authorized payment.

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

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#include <CkJsonObject.h>
#include <CkStringBuilder.h>
#include <CkRest.h>

void ChilkatSample(void)
    {
    // 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)
    CkJsonObject jsonToken;
    jsonToken.LoadFile("qa_data/tokens/paypal.json");

    // Build the Authorization request header field value.
    CkStringBuilder sbAuth;
    // token_type should be "Bearer"
    sbAuth.Append(jsonToken.stringOf("token_type"));
    sbAuth.Append(" ");
    sbAuth.Append(jsonToken.stringOf("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.
    CkRest rest;
    bool bAutoReconnect = true;
    bool success = rest.Connect("api.sandbox.paypal.com",443,true,bAutoReconnect);
    if (success != true) {
        std::cout << rest.lastErrorText() << "\r\n";
        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.
    CkJsonObject json;
    json.put_EmitCompact(false);
    json.UpdateString("amount.currency","USD");
    json.UpdateString("amount.total","4.54");
    json.UpdateBool("is_final_capture",true);
    std::cout << json.emit() << "\r\n";

    // The JSON created by the above code:

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

    rest.AddHeader("Authorization",sbAuth.getAsString());
    rest.AddHeader("Content-Type","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.

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

    // Send the POST request containign the JSON in the request body, and get the JSON response.
    CkStringBuilder sbJsonRequest;
    json.put_EmitCompact(true);
    json.EmitSb(sbJsonRequest);
    CkStringBuilder sbJsonResponse;
    success = rest.FullRequestSb("POST",sbPath.getAsString(),sbJsonRequest,sbJsonResponse);
    if (success != true) {
        std::cout << rest.lastErrorText() << "\r\n";
        return;
    }

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

    std::cout << "Response Status Code = " << rest.get_ResponseStatusCode() << "\r\n";

    // 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) {
        std::cout << json.emit() << "\r\n";
        std::cout << "Failed." << "\r\n";
        return;
    }

    // Sample JSON response is shown below.
    std::cout << json.emit() << "\r\n";

    std::cout << "success" << "\r\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"
    // 	    }
    // 	  ]
    // 	
    }

 

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