C
C
PayPal - Create a PayPal Payment
See more PayPal Examples
Creates a payment to be paid from a PayPal account (as opposed to being funded by a credit card).Note: This example requires Chilkat v9.5.0.65 or greater.
Chilkat C Downloads
#include <C_CkJsonObject.h>
#include <C_CkStringBuilder.h>
#include <C_CkRest.h>
void ChilkatSample(void)
{
BOOL success;
HCkJsonObject jsonToken;
HCkStringBuilder sbAuth;
HCkRest rest;
BOOL bAutoReconnect;
HCkJsonObject json;
HCkStringBuilder sbJsonRequest;
HCkStringBuilder sbJsonResponse;
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)
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..
// ----------------------------------------------------------------------------------------------
// Build the JSON containing the transaction information.
json = CkJsonObject_Create();
CkJsonObject_putEmitCompact(json,FALSE);
CkJsonObject_UpdateString(json,"intent","sale");
CkJsonObject_UpdateString(json,"redirect_urls.return_url","http://www.example.com/return_url");
CkJsonObject_UpdateString(json,"redirect_urls.cancel_url","http://www.example.com/cancel_url");
CkJsonObject_UpdateString(json,"payer.payment_method","paypal");
CkJsonObject_UpdateString(json,"transactions[0].amount.total","7.47");
CkJsonObject_UpdateString(json,"transactions[0].amount.currency","USD");
CkJsonObject_UpdateString(json,"transactions[0].description","This is the payment transaction description.");
printf("%s\n",CkJsonObject_emit(json));
// The JSON created by the above code is this:
// {
// "intent": "sale",
// "redirect_urls": {
// "return_url": "http://www.example.com/return_url",
// "cancel_url": "http://www.example.com/cancel_url"
// },
// "payer": {
// "payment_method": "paypal"
// },
// "transactions": [
// {
// "amount": {
// "total": "7.47",
// "currency": "USD"
// },
// "description": "This is the payment transaction description."
// }
// ]
// }
CkRest_AddHeader(rest,"Authorization",CkStringBuilder_getAsString(sbAuth));
CkRest_AddHeader(rest,"Content-Type","application/json");
// Send the POST request containign the JSON in the request body, and get the JSON response.
sbJsonRequest = CkStringBuilder_Create();
CkJsonObject_putEmitCompact(json,TRUE);
CkJsonObject_EmitSb(json,sbJsonRequest);
sbJsonResponse = CkStringBuilder_Create();
success = CkRest_FullRequestSb(rest,"POST","/v1/payments/payment",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(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 201 success response?
if (CkRest_getResponseStatusCode(rest) != 201) {
printf("%s\n",CkJsonObject_emit(json));
printf("Failed.\n");
CkJsonObject_Dispose(jsonToken);
CkStringBuilder_Dispose(sbAuth);
CkRest_Dispose(rest);
CkJsonObject_Dispose(json);
CkStringBuilder_Dispose(sbJsonRequest);
CkStringBuilder_Dispose(sbJsonResponse);
return;
}
// Sample JSON response is shown below.
printf("%s\n",CkJsonObject_emit(json));
printf("success\n");
// ------------------------------------------------
// A sample JSON response:
// {
// "id": "PAY-1XK50350XV338620BLA3CZGI",
// "intent": "sale",
// "state": "created",
// "payer": {
// "payment_method": "paypal",
// "use_vendor_currency_conversion": false
// },
// "transactions": [
// {
// "amount": {
// "total": "7.47",
// "currency": "USD"
// },
// "description": "This is the payment transaction description.",
// "related_resources": [
// ]
// }
// ],
// "create_time": "2016-11-23T23:56:09Z",
// "links": [
// {
// "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-1XK50350XV338620BLA3CZGI",
// "rel": "self",
// "method": "GET"
// },
// {
// "href": "https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=EC-0BG932459F977083J",
// "rel": "approval_url",
// "method": "REDIRECT"
// },
// {
// "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-1XK50350XV338620BLA3CZGI/execute",
// "rel": "execute",
// "method": "POST"
// }
// ]
// }
CkJsonObject_Dispose(jsonToken);
CkStringBuilder_Dispose(sbAuth);
CkRest_Dispose(rest);
CkJsonObject_Dispose(json);
CkStringBuilder_Dispose(sbJsonRequest);
CkStringBuilder_Dispose(sbJsonResponse);
}