(Node.js) Amazon Pay - Update Checkout Session

See more Amazon Pay Examples

Update the Checkout Session with transaction details.

For more information, see https://developer.amazon.com/docs/amazon-pay-api-v2/checkout-session.html#update-checkout-session

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

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

    var http = new chilkat.Http();
    var success;

    // Implements the following CURL command:

    // curl "https://pay-api.amazon.com/:version/checkoutSessions/:checkoutSessionId" \
    // -X PATCH
    // -H "authorization:Px2e5oHhQZ88vVhc0DO%2FsShHj8MDDg%3DEXAMPLESIGNATURE"
    // -H "x-amz-pay-date:20201012T235046Z"
    // -d '{
    //     "webCheckoutDetails": {
    //         "checkoutResultReturnUrl": "https://a.com/merchant-confirm-page"
    //     },
    //     "paymentDetails": {
    //         "paymentIntent": "AuthorizeWithCapture",
    //         "canHandlePendingAuthorization":false,
    //         "softDescriptor": "Descriptor",
    //         "chargeAmount": {
    //             "amount": "1",
    //             "currencyCode": "USD"
    //         }
    //      },
    //     "merchantMetadata": {
    //         "merchantReferenceId": "Merchant reference ID",
    //         "merchantStoreName": "Merchant store name",
    //         "noteToBuyer": "Note to buyer",
    //         "customInformation": "Custom information"
    //     }
    // }'

    // 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.

    // {
    //   "webCheckoutDetails": {
    //     "checkoutResultReturnUrl": "https://a.com/merchant-confirm-page"
    //   },
    //   "paymentDetails": {
    //     "paymentIntent": "AuthorizeWithCapture",
    //     "canHandlePendingAuthorization": false,
    //     "softDescriptor": "Descriptor",
    //     "chargeAmount": {
    //       "amount": "1",
    //       "currencyCode": "USD"
    //     }
    //   },
    //   "merchantMetadata": {
    //     "merchantReferenceId": "Merchant reference ID",
    //     "merchantStoreName": "Merchant store name",
    //     "noteToBuyer": "Note to buyer",
    //     "customInformation": "Custom information"
    //   }
    // }

    var json = new chilkat.JsonObject();
    json.UpdateString("webCheckoutDetails.checkoutResultReturnUrl","https://a.com/merchant-confirm-page");
    json.UpdateString("paymentDetails.paymentIntent","AuthorizeWithCapture");
    json.UpdateBool("paymentDetails.canHandlePendingAuthorization",false);
    json.UpdateString("paymentDetails.softDescriptor","Descriptor");
    json.UpdateString("paymentDetails.chargeAmount.amount","1");
    json.UpdateString("paymentDetails.chargeAmount.currencyCode","USD");
    json.UpdateString("merchantMetadata.merchantReferenceId","Merchant reference ID");
    json.UpdateString("merchantMetadata.merchantStoreName","Merchant store name");
    json.UpdateString("merchantMetadata.noteToBuyer","Note to buyer");
    json.UpdateString("merchantMetadata.customInformation","Custom information");

    var sbRequestBody = new chilkat.StringBuilder();
    json.EmitSb(sbRequestBody);

    // 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.
    var privKey = new chilkat.PrivateKey();
    success = privKey.LoadPemFile("C:/someDir/myAmazonPayPrivateKey.pem");
    if (success == false) {
        console.log(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
    var publicKeyId = "SANDBOX-AHEGSJCM3L2S637RBGABLAFW";
    success = http.SetAuthPrivateKey(publicKeyId,privKey);
    if (success == false) {
        console.log(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
    // Authorization

    http.Accept = "application/json";

    success = http.SetUrlVar("sessionId","62b7d028-6c7c-4a43-b077-3897dff27c5b");
    // To use the live system, replace "sandbox" with "live" in the URL passed to PTextSb.
    // Also, make sure to use the correct region: pay-api.amazon.com, pay-api.amazon.eu, or pay-api.amazon.jp
    // resp: HttpResponse
    var resp = http.PTextSb("PATCH","https://pay-api.amazon.eu/sandbox/v2/checkoutSessions/{$sessionId}",sbRequestBody,"utf-8","application/json",false,false);
    if (http.LastMethodSuccess == false) {
        console.log(http.LastErrorText);
        return;
    }

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

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

    var respStatusCode = resp.StatusCode;
    console.log("Response Status Code = " + 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'"
        // 	}

        console.log("Failed.");

        return;
    }

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

    // {
    //   "checkoutSessionId": "ada3f397-7d4b-4a55-abac-786685c02d8b",
    //   "webCheckoutDetails": {
    //     "checkoutReviewReturnUrl": "https://a.com/merchant-review-page",
    //     "checkoutResultReturnUrl": "https://a.com/merchant-confirm-page",
    //     "checkoutCancelUrl": null,
    //     "amazonPayRedirectUrl": "https://pay.amazon.com/redirect/checkoutId-1"
    //   },
    //   "productType": "PayAndShip",
    //   "paymentDetails": {
    //     "paymentIntent": "AuthorizeWithCapture",
    //     "canHandlePendingAuthorization": false,
    //     "chargeAmount": {
    //       "amount": "1",
    //       "currencyCode": "USD"
    //     },
    //     "totalOrderAmount": null,
    //     "softDescriptor": "Descriptor",
    //     "presentmentCurrency": "USD",
    //     "allowOvercharge": null,
    //     "extendExpiration": null
    //   },
    //   "merchantMetadata": {
    //     "merchantReferenceId": "Merchant reference ID",
    //     "merchantStoreName": "Merchant store name",
    //     "noteToBuyer": "Note to buyer",
    //     "customInformation": "Custom information"
    //   },
    //   "supplementaryData": null,
    //   "buyer": {
    //     "buyerId": "buyerId",
    //     "name": "name-1",
    //     "email": "name@amazon.com",
    //     "phoneNumber": "800-000-0000",
    //     "primeMembershipTypes": null
    //   },
    //   "billingAddress": {
    //     "name": "Work",
    //     "addressLine1": "440 Terry Ave",
    //     "addressLine2": "",
    //     "addressLine3": "",
    //     "city": "Seattle",
    //     "county": "King",
    //     "district": "Seattle",
    //     "stateOrRegion": "WA",
    //     "postalCode": "98121",
    //     "countryCode": "US"
    //   },
    //   "paymentPreferences": [
    //     {
    //       "paymentDescriptor": "Your selected Amazon payment method"
    //     }
    //   ],
    //   "statusDetails": {
    //     "state": "Open",
    //     "reasonCode": null,
    //     "reasonDescription": null,
    //     "lastUpdatedTimestamp": "20191015T195703Z"
    //   },
    //   "shippingAddress": {
    //     "name": "Susie Smith",
    //     "addressLine1": "10 Ditka Ave",
    //     "addressLine2": "Suite 2500",
    //     "addressLine3": null,
    //     "city": "Chicago",
    //     "county": null,
    //     "district": null,
    //     "stateOrRegion": "IL",
    //     "postalCode": "60602",
    //     "countryCode": "US",
    //     "phoneNumber": "800-000-0000"
    //   },
    //   "platformId": null,
    //   "chargePermissionId": null,
    //   "chargeId": null,
    //   "constraints": [
    //   ],
    //   "creationTimestamp": "20191015T195655Z",
    //   "expirationTimestamp": "20191016T195655Z",
    //   "storeId": "amzn1.application-oa2-client.8b5e45312b5248b69eeaStoreId",
    //   "deliverySpecifications": {
    //     "specialRestrictions": [
    //       "RestrictPOBoxes"
    //     ],
    //     "addressRestrictions": {
    //       "type": "Allowed",
    //       "restrictions": {
    //         "US": {
    //           "statesOrRegions": [
    //             "WA"
    //           ],
    //           "zipCodes": [
    //             "95050",
    //             "93405"
    //           ]
    //         },
    //         "GB": {
    //           "zipCodes": [
    //             "72046",
    //             "72047"
    //           ]
    //         },
    //         "IN": {
    //           "statesOrRegions": [
    //             "AP"
    //           ]
    //         },
    //         "JP": {}
    //       }
    //     }
    //   },
    //   "providerMetadata": {
    //     "providerReferenceId": null
    //   },
    //   "releaseEnvironment": "Sandbox"
    // }

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

    var paymentDescriptor;
    var strVal;

    var checkoutSessionId = jResp.StringOf("checkoutSessionId");
    var webCheckoutDetailsCheckoutReviewReturnUrl = jResp.StringOf("webCheckoutDetails.checkoutReviewReturnUrl");
    var webCheckoutDetailsCheckoutResultReturnUrl = jResp.StringOf("webCheckoutDetails.checkoutResultReturnUrl");
    var webCheckoutDetailsCheckoutCancelUrl = jResp.StringOf("webCheckoutDetails.checkoutCancelUrl");
    var webCheckoutDetailsAmazonPayRedirectUrl = jResp.StringOf("webCheckoutDetails.amazonPayRedirectUrl");
    var productType = jResp.StringOf("productType");
    var paymentDetailsPaymentIntent = jResp.StringOf("paymentDetails.paymentIntent");
    var paymentDetailsCanHandlePendingAuthorization = jResp.BoolOf("paymentDetails.canHandlePendingAuthorization");
    var paymentDetailsChargeAmountAmount = jResp.StringOf("paymentDetails.chargeAmount.amount");
    var paymentDetailsChargeAmountCurrencyCode = jResp.StringOf("paymentDetails.chargeAmount.currencyCode");
    var paymentDetailsTotalOrderAmount = jResp.StringOf("paymentDetails.totalOrderAmount");
    var paymentDetailsSoftDescriptor = jResp.StringOf("paymentDetails.softDescriptor");
    var paymentDetailsPresentmentCurrency = jResp.StringOf("paymentDetails.presentmentCurrency");
    var paymentDetailsAllowOvercharge = jResp.StringOf("paymentDetails.allowOvercharge");
    var paymentDetailsExtendExpiration = jResp.StringOf("paymentDetails.extendExpiration");
    var merchantMetadataMerchantReferenceId = jResp.StringOf("merchantMetadata.merchantReferenceId");
    var merchantMetadataMerchantStoreName = jResp.StringOf("merchantMetadata.merchantStoreName");
    var merchantMetadataNoteToBuyer = jResp.StringOf("merchantMetadata.noteToBuyer");
    var merchantMetadataCustomInformation = jResp.StringOf("merchantMetadata.customInformation");
    var supplementaryData = jResp.StringOf("supplementaryData");
    var buyerBuyerId = jResp.StringOf("buyer.buyerId");
    var buyerName = jResp.StringOf("buyer.name");
    var buyerEmail = jResp.StringOf("buyer.email");
    var buyerPhoneNumber = jResp.StringOf("buyer.phoneNumber");
    var buyerPrimeMembershipTypes = jResp.StringOf("buyer.primeMembershipTypes");
    var billingAddressName = jResp.StringOf("billingAddress.name");
    var billingAddressAddressLine1 = jResp.StringOf("billingAddress.addressLine1");
    var billingAddressAddressLine2 = jResp.StringOf("billingAddress.addressLine2");
    var billingAddressAddressLine3 = jResp.StringOf("billingAddress.addressLine3");
    var billingAddressCity = jResp.StringOf("billingAddress.city");
    var billingAddressCounty = jResp.StringOf("billingAddress.county");
    var billingAddressDistrict = jResp.StringOf("billingAddress.district");
    var billingAddressStateOrRegion = jResp.StringOf("billingAddress.stateOrRegion");
    var billingAddressPostalCode = jResp.StringOf("billingAddress.postalCode");
    var billingAddressCountryCode = jResp.StringOf("billingAddress.countryCode");
    var statusDetailsState = jResp.StringOf("statusDetails.state");
    var statusDetailsReasonCode = jResp.StringOf("statusDetails.reasonCode");
    var statusDetailsReasonDescription = jResp.StringOf("statusDetails.reasonDescription");
    var statusDetailsLastUpdatedTimestamp = jResp.StringOf("statusDetails.lastUpdatedTimestamp");
    var shippingAddressName = jResp.StringOf("shippingAddress.name");
    var shippingAddressAddressLine1 = jResp.StringOf("shippingAddress.addressLine1");
    var shippingAddressAddressLine2 = jResp.StringOf("shippingAddress.addressLine2");
    var shippingAddressAddressLine3 = jResp.StringOf("shippingAddress.addressLine3");
    var shippingAddressCity = jResp.StringOf("shippingAddress.city");
    var shippingAddressCounty = jResp.StringOf("shippingAddress.county");
    var shippingAddressDistrict = jResp.StringOf("shippingAddress.district");
    var shippingAddressStateOrRegion = jResp.StringOf("shippingAddress.stateOrRegion");
    var shippingAddressPostalCode = jResp.StringOf("shippingAddress.postalCode");
    var shippingAddressCountryCode = jResp.StringOf("shippingAddress.countryCode");
    var shippingAddressPhoneNumber = jResp.StringOf("shippingAddress.phoneNumber");
    var platformId = jResp.StringOf("platformId");
    var chargePermissionId = jResp.StringOf("chargePermissionId");
    var chargeId = jResp.StringOf("chargeId");
    var creationTimestamp = jResp.StringOf("creationTimestamp");
    var expirationTimestamp = jResp.StringOf("expirationTimestamp");
    var storeId = jResp.StringOf("storeId");
    var deliverySpecificationsAddressRestrictionsType = jResp.StringOf("deliverySpecifications.addressRestrictions.type");
    var providerMetadataProviderReferenceId = jResp.StringOf("providerMetadata.providerReferenceId");
    var releaseEnvironment = jResp.StringOf("releaseEnvironment");
    var i = 0;
    var count_i = jResp.SizeOfArray("paymentPreferences");
    while (i < count_i) {
        jResp.I = i;
        paymentDescriptor = jResp.StringOf("paymentPreferences[i].paymentDescriptor");
        i = i+1;
    }

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

    i = 0;
    count_i = jResp.SizeOfArray("deliverySpecifications.specialRestrictions");
    while (i < count_i) {
        jResp.I = i;
        strVal = jResp.StringOf("deliverySpecifications.specialRestrictions[i]");
        i = i+1;
    }

    i = 0;
    count_i = jResp.SizeOfArray("deliverySpecifications.addressRestrictions.restrictions.US.statesOrRegions");
    while (i < count_i) {
        jResp.I = i;
        strVal = jResp.StringOf("deliverySpecifications.addressRestrictions.restrictions.US.statesOrRegions[i]");
        i = i+1;
    }

    i = 0;
    count_i = jResp.SizeOfArray("deliverySpecifications.addressRestrictions.restrictions.US.zipCodes");
    while (i < count_i) {
        jResp.I = i;
        strVal = jResp.StringOf("deliverySpecifications.addressRestrictions.restrictions.US.zipCodes[i]");
        i = i+1;
    }

    i = 0;
    count_i = jResp.SizeOfArray("deliverySpecifications.addressRestrictions.restrictions.GB.zipCodes");
    while (i < count_i) {
        jResp.I = i;
        strVal = jResp.StringOf("deliverySpecifications.addressRestrictions.restrictions.GB.zipCodes[i]");
        i = i+1;
    }

    i = 0;
    count_i = jResp.SizeOfArray("deliverySpecifications.addressRestrictions.restrictions.IN.statesOrRegions");
    while (i < count_i) {
        jResp.I = i;
        strVal = jResp.StringOf("deliverySpecifications.addressRestrictions.restrictions.IN.statesOrRegions[i]");
        i = i+1;
    }


}

chilkatExample();