(C) PayPal - Void an Authorization

Voids a previously authorized payment.

Note: A fully captured authorization cannot be voided.

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

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#include <C_CkJsonObject.h>
#include <C_CkStringBuilder.h>
#include <C_CkRest.h>

void ChilkatSample(void)
    {
    HCkJsonObject jsonToken;
    HCkStringBuilder sbAuth;
    HCkRest rest;
    BOOL bAutoReconnect;
    BOOL success;
    HCkJsonObject json;
    HCkStringBuilder sbPath;
    int numReplaced;
    HCkStringBuilder sbJsonRequest;
    HCkStringBuilder sbJsonResponse;

    // Note: Requires Chilkat v9.5.0.64 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 = CkJsonObject_Create();
    CkJsonObject_LoadFile(jsonToken,"qa_data/tokens/paypal.json");

    // Build the Authorization request header field value.
    sbAuth = CkStringBuilder_Create();
    // token_type should be "Bearer"
    CkStringBuilder_Append(sbAuth,CkJsonObject_stringOf(jsonToken,"token_type"));
    CkStringBuilder_Append(sbAuth," ");
    CkStringBuilder_Append(sbAuth,CkJsonObject_stringOf(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 = CkRest_Create();
    bAutoReconnect = TRUE;
    success = CkRest_Connect(rest,"api.sandbox.paypal.com",443,TRUE,bAutoReconnect);
    if (success != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkJsonObject_Dispose(jsonToken);
        CkStringBuilder_Dispose(sbAuth);
        CkRest_Dispose(rest);
        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..
    // ----------------------------------------------------------------------------------------------

    json = CkJsonObject_Create();
    CkJsonObject_putEmitCompact(json,FALSE);

    // This is the OAuth2 Authorization header, not to be confused with a PayPal credit card authorization...
    CkRest_AddHeader(rest,"Authorization",CkStringBuilder_getAsString(sbAuth));
    CkRest_AddHeader(rest,"Content-Type","application/json");

    // The authorization ID is added to the path.
    // The authorization ID is obtained from payment records as shown here: Find Authorizations
    sbPath = CkStringBuilder_Create();
    CkStringBuilder_Append(sbPath,"/v1/payments/authorization/authorization_id/void");
    numReplaced = CkStringBuilder_Replace(sbPath,"authorization_id","0SU72290A8399291G");

    // Send the POST request containing an empty JSON body, and get the JSON response.
    sbJsonRequest = CkStringBuilder_Create();
    CkStringBuilder_Append(sbJsonRequest,"{}");

    sbJsonResponse = CkStringBuilder_Create();

    success = CkRest_FullRequestSb(rest,"POST",CkStringBuilder_getAsString(sbPath),sbJsonRequest,sbJsonResponse);
    if (success != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkJsonObject_Dispose(jsonToken);
        CkStringBuilder_Dispose(sbAuth);
        CkRest_Dispose(rest);
        CkJsonObject_Dispose(json);
        CkStringBuilder_Dispose(sbPath);
        CkStringBuilder_Dispose(sbJsonRequest);
        CkStringBuilder_Dispose(sbJsonResponse);
        return;
    }

    CkJsonObject_putEmitCompact(json,FALSE);
    CkJsonObject_LoadSb(json,sbJsonResponse);

    printf("Response Status Code = %d\n",CkRest_getResponseStatusCode(rest));

    // Did we get a 200 success response?
    if (CkRest_getResponseStatusCode(rest) != 200) {
        printf("%s\n",CkJsonObject_emit(json));
        printf("Failed.\n");
        CkJsonObject_Dispose(jsonToken);
        CkStringBuilder_Dispose(sbAuth);
        CkRest_Dispose(rest);
        CkJsonObject_Dispose(json);
        CkStringBuilder_Dispose(sbPath);
        CkStringBuilder_Dispose(sbJsonRequest);
        CkStringBuilder_Dispose(sbJsonResponse);
        return;
    }

    printf("%s\n",CkJsonObject_emit(json));
    printf("Success.\n");

    // A successful JSON response:

    // 	{ 
    // 	  "id": "0SU72290A8399291G",
    // 	  "create_time": "2016-11-26T17:31:05Z",
    // 	  "update_time": "2016-11-26T17:31:10Z",
    // 	  "amount": { 
    // 	    "total": "6.70",
    // 	    "currency": "USD",
    // 	    "details": { 
    // 	      "subtotal": "6.70"
    // 	    }
    // 	  },
    // 	  "state": "voided",
    // 	  "parent_payment": "PAY-62106714J93631829LA44NWI",
    // 	  "links": [
    // 	    { 
    // 	      "href": "https://api.sandbox.paypal.com/v1/payments/authorization/0SU72290A8399291G",
    // 	      "rel": "self",
    // 	      "method": "GET"
    // 	    },
    // 	    { 
    // 	      "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-62106714J93631829LA44NWI",
    // 	      "rel": "parent_payment",
    // 	      "method": "GET"
    // 	    }
    // 	  ]
    // 	}


    CkJsonObject_Dispose(jsonToken);
    CkStringBuilder_Dispose(sbAuth);
    CkRest_Dispose(rest);
    CkJsonObject_Dispose(json);
    CkStringBuilder_Dispose(sbPath);
    CkStringBuilder_Dispose(sbJsonRequest);
    CkStringBuilder_Dispose(sbJsonResponse);

    }