(C++) 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

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#include <CkHttp.h>
#include <CkJsonObject.h>
#include <CkStringBuilder.h>
#include <CkPrivateKey.h>
#include <CkHttpResponse.h>

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

    CkHttp http;
    bool 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"
    //   }
    // }

    CkJsonObject json;
    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");

    CkStringBuilder sbRequestBody;
    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.
    CkPrivateKey privKey;
    success = privKey.LoadPemFile("C:/someDir/myAmazonPayPrivateKey.pem");
    if (success == false) {
        std::cout << privKey.lastErrorText() << "\r\n";
        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
    const char *publicKeyId = "SANDBOX-AHEGSJCM3L2S637RBGABLAFW";
    success = http.SetAuthPrivateKey(publicKeyId,privKey);
    if (success == false) {
        std::cout << http.lastErrorText() << "\r\n";
        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.put_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
    CkHttpResponse *resp = http.PTextSb("PATCH","https://pay-api.amazon.eu/sandbox/v2/checkoutSessions/{$sessionId}",sbRequestBody,"utf-8","application/json",false,false);
    if (http.get_LastMethodSuccess() == false) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    CkStringBuilder sbResponseBody;
    resp->GetBodySb(sbResponseBody);
    CkJsonObject jResp;
    jResp.LoadSb(sbResponseBody);
    jResp.put_EmitCompact(false);

    // If the status code is not equal to 200, this will display error information.
    std::cout << "Response Body:" << "\r\n";
    std::cout << jResp.emit() << "\r\n";

    int respStatusCode = resp->get_StatusCode();
    std::cout << "Response Status Code = " << respStatusCode << "\r\n";
    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'"
        // 	}

        std::cout << "Failed." << "\r\n";
        delete resp;
        return;
    }

    delete resp;

    // 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

    // Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.
    // See this example explaining how this memory should be used: const char * functions.

    const char *paymentDescriptor = 0;
    const char *strVal = 0;

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

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

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