C#

Amazon Pay - Complete Checkout Session

See more Amazon Pay Examples

Complete Checkout Session after the buyer returns to checkoutResultReturnUrl to finalize the paymentIntent. C#

bool success = false;

//  This example assumes the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

Chilkat.Http http = new Chilkat.Http();

//  Implements the following CURL command:

//  curl "https://pay-api.amazon.com/:version/checkoutSessions/:checkoutSessionId/complete" \
//  -X POST
//  -H "authorization:Px2e5oHhQZ88vVhc0DO%2FsShHj8MDDg%3DEXAMPLESIGNATURE"
//  -H "x-amz-pay-date:20201012T235046Z"
//  -H "x-amz-pay-idempotency-key:AVLo5tI10BHgEk2jEXAMPLEKEY"
//  -d '{
//      "chargeAmount": {
//          "amount": "14.00",
//          "currencyCode": "USD"
//      }
//  }'

//  Use the following online tool to generate HTTP code from a CURL command
//  Convert a cURL Command to HTTP Source Code

//  Use this online tool to generate code from sample JSON:
//  Generate Code to Create JSON

//  The following JSON is sent in the request body.

//  {
//    "chargeAmount": {
//      "amount": "14.00",
//      "currencyCode": "USD"
//    }
//  }

Chilkat.JsonObject json = new Chilkat.JsonObject();
json.UpdateString("chargeAmount.amount","14.00");
json.UpdateString("chargeAmount.currencyCode","USD");

//  Load your Amazon Pay private key.  
//  There are many other ways to load private keys into the Chilkat private key object, such as from different formats,
//  or from in-memory strings or bytes.
Chilkat.PrivateKey privKey = new Chilkat.PrivateKey();
success = privKey.LoadPemFile("C:/someDir/myAmazonPayPrivateKey.pem");
if (success == false) {
    Debug.WriteLine(privKey.LastErrorText);
    return;
}

//  Provide your Amazon Pay private key and Public Key ID 
//  Use your public key ID here.  It must be the one associated with the private key.
//  Note: The SetAuthPrivateKey method was added in Chilkat v9.5.0.89
string publicKeyId = "SANDBOX-AHEGSJCM3L2S637RBGABLAFW";
success = http.SetAuthPrivateKey(publicKeyId,privKey);
if (success == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

//  Note: When the private key is provided as shown above, Chilkat will automatically add the required x-amz-pay-* headers to the HTTP request,
//  and will also sign the request.  Nothing more is needed.
//  Chilkat automatically generates and adds the following headers:
//  
//  x-amz-pay-date
//  x-amz-pay-host
//  x-amz-pay-region
//  x-amz-pay-idempotency-key
//  Authorization

http.Accept = "application/json";

//  To use the live system, replace "sandbox" with "live" in the URL passed to HttpJson.
//  Also, make sure to use the correct region: pay-api.amazon.com, pay-api.amazon.eu, or pay-api.amazon.jp
success = http.SetUrlVar("sessionId","62b7d028-6c7c-4a43-b077-3897dff27c5b");
Chilkat.HttpResponse resp = new Chilkat.HttpResponse();
success = http.HttpJson("POST","https://pay-api.amazon.eu/sandbox/v2/checkoutSessions/{$sessionId}/complete",json,"application/json",resp);
if (success == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

Chilkat.StringBuilder sbResponseBody = new Chilkat.StringBuilder();
resp.GetBodySb(sbResponseBody);
Chilkat.JsonObject jResp = new Chilkat.JsonObject();
jResp.LoadSb(sbResponseBody);
jResp.EmitCompact = false;

//  If the status code is not equal to 200, this will display error information.
Debug.WriteLine("Response Body:");
Debug.WriteLine(jResp.Emit());

int respStatusCode = resp.StatusCode;
Debug.WriteLine("Response Status Code = " + Convert.ToString(respStatusCode));
if (respStatusCode != 200) {

    //  A sample response body for the case where the session ID does not exist:
    //  	{
    //  	  "reasonCode": "ResourceNotFound",
    //  	  "message": "Resource you are trying to access is not available. Requested path '/sandbox/v2/checkoutSessions/bd504926-f659-4ad7-a1a9-9a747aaf5275'"
    //  	}

    //  Another sample failure response (status code = 422)
    //  	{
    //  	  "reasonCode": "InvalidCheckoutSessionStatus",
    //  	  "message": "You tried to call an operation on a Checkout Session that is in a state where that operation is not allowed"
    //  	}

    Debug.WriteLine("Failed.");
    return;
}

//  Sample JSON response:
//  (Sample code for parsing the JSON response is shown below)

//  {
//    "checkoutSessionId": "bd504926-f659-4ad7-a1a9-9a747aaf5275",
//    "webCheckoutDetails": null,
//    "chargePermissionType": "OneTime",
//    "recurringMetadata": null,
//    "productType": null,
//    "paymentDetails": null,
//    "merchantMetadata": null,
//    "supplementaryData": null,
//    "buyer": null,
//    "billingAddress": null,
//    "paymentPreferences": [
//      null
//    ],
//    "statusDetails": {
//      "state": "Completed",
//      "reasonCode": null,
//      "reasonDescription": null,
//      "lastUpdatedTimestamp": "20191015T204327Z"
//    },
//    "shippingAddress": null,
//    "platformId": null,
//    "chargePermissionId": "S01-5105180-3221187",
//    "chargeId": "S01-5105180-3221187-C056351",
//    "constraints": [
//      null
//    ],
//    "creationTimestamp": "20191015T204313Z",
//    "expirationTimestamp": null,
//    "storeId": null,
//    "deliverySpecifications": null,
//    "providerMetadata": null,
//    "releaseEnvironment": null
//  }

//  Sample code for parsing the JSON response...
//  Use the following online tool to generate parsing code from sample JSON:
//  Generate Parsing Code from JSON

bool nullVal;

string checkoutSessionId = jResp.StringOf("checkoutSessionId");
string webCheckoutDetails = jResp.StringOf("webCheckoutDetails");
string chargePermissionType = jResp.StringOf("chargePermissionType");
string recurringMetadata = jResp.StringOf("recurringMetadata");
string productType = jResp.StringOf("productType");
string paymentDetails = jResp.StringOf("paymentDetails");
string merchantMetadata = jResp.StringOf("merchantMetadata");
string supplementaryData = jResp.StringOf("supplementaryData");
string buyer = jResp.StringOf("buyer");
string billingAddress = jResp.StringOf("billingAddress");
string statusDetailsState = jResp.StringOf("statusDetails.state");
string statusDetailsReasonCode = jResp.StringOf("statusDetails.reasonCode");
string statusDetailsReasonDescription = jResp.StringOf("statusDetails.reasonDescription");
string statusDetailsLastUpdatedTimestamp = jResp.StringOf("statusDetails.lastUpdatedTimestamp");
string shippingAddress = jResp.StringOf("shippingAddress");
string platformId = jResp.StringOf("platformId");
string chargePermissionId = jResp.StringOf("chargePermissionId");
string chargeId = jResp.StringOf("chargeId");
string creationTimestamp = jResp.StringOf("creationTimestamp");
string expirationTimestamp = jResp.StringOf("expirationTimestamp");
string storeId = jResp.StringOf("storeId");
string deliverySpecifications = jResp.StringOf("deliverySpecifications");
string providerMetadata = jResp.StringOf("providerMetadata");
string releaseEnvironment = jResp.StringOf("releaseEnvironment");
int i = 0;
int count_i = jResp.SizeOfArray("paymentPreferences");
while (i < count_i) {
    jResp.I = i;
    nullVal = jResp.IsNullOf("paymentPreferences[i]");
    i = i + 1;
}

i = 0;
count_i = jResp.SizeOfArray("constraints");
while (i < count_i) {
    jResp.I = i;
    nullVal = jResp.IsNullOf("constraints[i]");
    i = i + 1;
}