Objective-C

PayPal - Capture Authorization

See more PayPal Examples

Capture and process a previously created authorization. The original payment call must have the intent set to authorize.

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

Objective-C

#import <CkoJsonObject.h>
#import <CkoStringBuilder.h>
#import <CkoRest.h>

BOOL success = NO;

//  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)
CkoJsonObject *jsonToken = [[CkoJsonObject alloc] init];
[jsonToken LoadFile: @"qa_data/tokens/paypal.json"];

//  Build the Authorization request header field value.
CkoStringBuilder *sbAuth = [[CkoStringBuilder alloc] init];
//  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.
CkoRest *rest = [[CkoRest alloc] init];
BOOL bAutoReconnect = YES;
success = [rest Connect: @"api.sandbox.paypal.com" port: [NSNumber numberWithInt: 443] tls: YES autoReconnect: bAutoReconnect];
if (success != YES) {
    NSLog(@"%@",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..
//  ----------------------------------------------------------------------------------------------

//  To capture a particular amount, build JSON such as this:
CkoJsonObject *json = [[CkoJsonObject alloc] init];
json.EmitCompact = NO;
[json UpdateString: @"amount.currency" value: @"USD"];
[json UpdateString: @"amount.total" value: @"6.70"];
//  is_final_capture is optional and indicates whether to release all remaining funds that the authorization holds in the funding instrument.
[json UpdateBool: @"is_final_capture" value: YES];
NSLog(@"%@",[json Emit]);

//  The JSON created by the above code:

//  	{ 
//  	  "amount": { 
//  	    "currency": "USD",
//  	    "total": "6.70"
//  	  },
//  	  "is_final_capture": true
//  	}

//  This is the OAuth2 Authorization header, not to be confused with a PayPal credit card authorization...
[rest AddHeader: @"Authorization" value: [sbAuth GetAsString]];
[rest AddHeader: @"Content-Type" value: @"application/json"];

//  The authorization ID is added to the path.
//  The authorization ID is obtained from payment records as shown here: Find Authorizations
CkoStringBuilder *sbPath = [[CkoStringBuilder alloc] init];
[sbPath Append: @"/v1/payments/authorization/authorization_id/capture"];
int numReplaced = [[sbPath Replace: @"authorization_id" replacement: @"6HG91590AX913463C"] intValue];

//  Send the POST request containing the JSON in the request body, and get the JSON response.
CkoStringBuilder *sbJsonRequest = [[CkoStringBuilder alloc] init];
json.EmitCompact = YES;
[json EmitSb: sbJsonRequest];
CkoStringBuilder *sbJsonResponse = [[CkoStringBuilder alloc] init];

success = [rest FullRequestSb: @"POST" uriPath: [sbPath GetAsString] requestBody: sbJsonRequest responseBody: sbJsonResponse];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

json.EmitCompact = NO;
[json LoadSb: sbJsonResponse];

NSLog(@"%@%d",@"Response Status Code = ",[rest.ResponseStatusCode intValue]);

//  Did we get a 200 success response?
if ([rest.ResponseStatusCode intValue] != 200) {
    NSLog(@"%@",[json Emit]);
    NSLog(@"%@",@"Failed.");
    return;
}

NSLog(@"%@",[json Emit]);
NSLog(@"%@",@"Success.");

//  A successful JSON response:

//  	{ 
//  	  "id": "87S70321AE222860G",
//  	  "create_time": "2016-11-26T17:27:46Z",
//  	  "update_time": "2016-11-26T17:27:50Z",
//  	  "amount": { 
//  	    "total": "6.70",
//  	    "currency": "USD"
//  	  },
//  	  "is_final_capture": true,
//  	  "state": "completed",
//  	  "reasonCode": "None",
//  	  "parent_payment": "PAY-3SL8976592063093RLA3DMAY",
//  	  "transaction_fee": { 
//  	    "value": "0.49",
//  	    "currency": "USD"
//  	  },
//  	  "links": [
//  	    { 
//  	      "href": "https://api.sandbox.paypal.com/v1/payments/capture/87S70321AE222860G",
//  	      "rel": "self",
//  	      "method": "GET"
//  	    },
//  	    { 
//  	      "href": "https://api.sandbox.paypal.com/v1/payments/capture/87S70321AE222860G/refund",
//  	      "rel": "refund",
//  	      "method": "POST"
//  	    },
//  	    { 
//  	      "href": "https://api.sandbox.paypal.com/v1/payments/authorization/6HG91590AX913463C",
//  	      "rel": "authorization",
//  	      "method": "GET"
//  	    },
//  	    { 
//  	      "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-3SL8976592063093RLA3DMAY",
//  	      "rel": "parent_payment",
//  	      "method": "GET"
//  	    }
//  	  ]
//  	}
//