Link Account

Users of the merchant application must link their Amazon Pay Later account with the merchant account. To enable this, the SDK facilitates the retrieval of an authCode, exchangeable for a pair of auth tokens. These tokens allow the merchant application to access Amazon Pay’s server-side APIs.

Request Parameters

Parameter	Type	Description
CodeChallenge	String	SHA-256 hashed code challenge for authCode gen.

Response Parameters

Parameter	Type	Description
Status	String	GRANTED: User granted consent; DENIED: User denied consent.
authCode	String	Code exchangeable for auth token
clientId	String	Merchant application's mobile client ID
redirectUri	String	Redirect URI of the merchant application

Using Objective C

Calling the API

APayAuthorizeCallbackHandler *apayCallback = [[APayAuthorizeCallbackHandler alloc] init];

apayCallback.delegate = self; 

APayAuthorizeRequest *request = [APayAuthorizeRequest build:^(id<APayAuthorizeRequestBuilder> builder) { 
        [builder withCodeChallenge:[[AuthProofKey generate] codeChallenge]]; 
}]; 

[[AmazonPay sharedInstance] authorize:request apayAuthorizeCallback: apayCallback]; 

Handling the response

AuthorizeDelegate.h

#import <Foundation/Foundation.h> 
#import <AmazonPayHardenediOSSDK/APayAuthorizationResponse.h> 

@protocol AuthorizeDelegate 
-(void) authorizationSuccess: (APayAuthorizationResponse *)response; 
@end 

APayAuthorizeCallbackHandler.h

#import <Foundation/Foundation.h> 
#import <AmazonPayHardenediOSSDK/APayAuthorizationResponse.h> 

@protocol AuthorizeDelegate 
-(void) authorizationSuccess: (APayAuthorizationResponse *)response; 
@end 

APayAuthorizeCallbackHandler.m

#import "APayAuthorizeCallbackHandler.h"
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
#import <SafariServices/SafariServices.h>
#import "SilentPayHelper.h"

@implementation APayAuthorizeCallbackHandler
- (void)onCancel:(NSError *)error { 
//this is called when user clicked 'done' button in safari view
//or selected 'cancel' option when asked for consent to link Amazon account
}
- (void)onMobileSDKError:(NSError *)error {
//mobile sdk specific error
}
- (void)onNetworkUnavailable {
// SDK could not connect to the network
}
- (void)onFailure:(NSError *)error {
// link account failed
}
- (void)onSuccess:(APayAuthorizationResponse *)response {
    //successfully authorized, calls 'authorizationSuccess' implemented by the Delegate
    if (_delegate) {
        [_delegate authorizationSuccess:response];
    }
}
@end 

Using Swift

Calling the API

let apay = APayAuthorizeCallbackHandler() 

apay.delegate = self 

let request:APayAuthorizeRequest = APayAuthorizeRequest.build({(builder) in builder?.withCodeChallenge(AuthProofKey.sharedInstance.codeChallenge)})

AmazonPay.sharedInstance()?.authorize(request, apayAuthorizeCallback: apay) 

Handling the response

The response from above API call can be handled using below code.

APayAuthorizeCallbackHandler.swift

import Foundation
import AmazonPayHardenediOSSDK

protocol AuthorizeSuccessDelegate: class {func authorizationSuccess(response:APayAuthorizationResponse)}

class APayAuthorizeCallbackHandler : APayAuthorizeCallbackDelegate {
    var delegate:AuthorizeSuccessDelegate?

    func onSuccess(_ response: APayAuthorizationResponse!) {
        if ((delegate)!= nil) {
            delegate?.authorizationSuccess(response: response);
        }
    }

    func onFailure(_ error: Error!) {
        //authorize failure
    }

    func onMobileSDKError(_ error: Error!) {
        //mobile sdk specific error
    }

    func onNetworkUnavailable() {
        //could not connect to network
    }

    func onCancel() {
        //user selected cancle option or closed the SFSafariWebView
    }
}