(Unicode C++) Amazon Pay - Get Checkout Session

See more Amazon Pay Examples

Get Checkout Session details includes buyer info, payment instrument details, and shipping address.

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

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#include <CkHttpW.h>
#include <CkPrivateKeyW.h>
#include <CkStringBuilderW.h>
#include <CkJsonObjectW.h>

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

    CkHttpW http;
    bool success;

    // Implements the following CURL command:

    // curl "https://pay-api.amazon.com/:version/checkoutSessions/:checkoutSessionId"
    //   -X GET
    //   -H "authorization:Px2e5oHhQZ88vVhc0DO%2FsShHj8MDDg%3DEXAMPLESIGNATURE"
    //   -H "x-amz-pay-date:20201012T235046Z"

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

    // 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.
    CkPrivateKeyW privKey;
    success = privKey.LoadPemFile(L"C:/someDir/myAmazonPayPrivateKey.pem");
    if (success == false) {
        wprintf(L"%s\n",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
    const wchar_t *publicKeyId = L"SANDBOX-AHEGSJCM3L2S637RBGABLAFW";
    success = http.SetAuthPrivateKey(publicKeyId,privKey);
    if (success == false) {
        wprintf(L"%s\n",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.put_Accept(L"application/json");

    int respStatusCode = 0;

    CkStringBuilderW sbResponseBody;
    success = http.SetUrlVar(L"sessionId",L"62b7d028-6c7c-4a43-b077-3897dff27c5b");
    // To use the live system, replace "sandbox" with "live" in the URL passed to QuickGetSb.
    // Also, make sure to use the correct region: pay-api.amazon.com, pay-api.amazon.eu, or pay-api.amazon.jp
    success = http.QuickGetSb(L"https://pay-api.amazon.eu/sandbox/v2/checkoutSessions/{$sessionId}",sbResponseBody);
    if (success == false) {
        // If the LastStatus is not equal to 0, then we received a response, but it was an error response.
        respStatusCode = http.get_LastStatus();
        if (respStatusCode != 0) {
            wprintf(L"Response Status Code = %d\n",respStatusCode);
            // 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'"}

            wprintf(L"Response body:\n");
            wprintf(L"%s\n",http.lastResponseBody());
        }
        else {
            wprintf(L"%s\n",http.lastErrorText());
        }

        return;
    }

    CkJsonObjectW jResp;
    jResp.LoadSb(sbResponseBody);
    jResp.put_EmitCompact(false);

    wprintf(L"Response Body:\n");
    wprintf(L"%s\n",jResp.emit());

    respStatusCode = http.get_LastStatus();
    wprintf(L"Response Status Code = %d\n",respStatusCode);
    // We expect a 200 status code for success.
    // Note: Some Amazon Pay API calls return 200 for success, others return 201.
    if (respStatusCode != 200) {
        wprintf(L"Failed.\n");
        return;
    }

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

    // {
    //   "checkoutSessionId": "bd504926-f659-4ad7-a1a9-9a747aaf5275",
    //   "webCheckoutDetails": {
    //     "checkoutReviewReturnUrl": "https://a.com/merchant-review-page",
    //     "checkoutResultReturnUrl": null,
    //     "checkoutCancelUrl": null,
    //     "amazonPayRedirectUrl": null
    //   },
    //   "chargePermissionType": "Recurring",
    //   "recurringMetadata": {
    //     "frequency": {
    //       "unit": "Month",
    //       "value": "1"
    //     },
    //     "amount": {
    //       "amount": "30",
    //       "currencyCode": "USD"
    //     }
    //   },
    //   "productType": "PayAndShip",
    //   "paymentDetails": {
    //     "paymentIntent": null,
    //     "canHandlePendingAuthorization": false,
    //     "chargeAmount": null,
    //     "totalOrderAmount": null,
    //     "softDescriptor": null,
    //     "presentmentCurrency": null,
    //     "allowOvercharge": null,
    //     "extendExpiration": null
    //   },
    //   "merchantMetadata": {
    //     "merchantReferenceId": null,
    //     "merchantStoreName": null,
    //     "noteToBuyer": null,
    //     "customInformation": null
    //   },
    //   "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": "20191015T204327Z"
    //   },
    //   "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": [
    //     {
    //       "constraintId": "ChargeAmountNotSet",
    //       "description": "chargeAmount is not set."
    //     },
    //     {
    //       "constraintId": "CheckoutResultReturnUrlNotSet",
    //       "description": "checkoutResultReturnUrl is not set."
    //     },
    //     {
    //       "constraintId": "PaymentIntentNotSet",
    //       "description": "paymentIntent is not set."
    //     }
    //   ],
    //   "creationTimestamp": "20191015T204313Z",
    //   "expirationTimestamp": "20191016T204313Z",
    //   "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 wchar_t *paymentDescriptor = 0;
    const wchar_t *constraintId = 0;
    const wchar_t *description = 0;
    const wchar_t *strVal = 0;

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

    i = 0;
    count_i = jResp.SizeOfArray(L"constraints");
    while (i < count_i) {
        jResp.put_I(i);
        constraintId = jResp.stringOf(L"constraints[i].constraintId");
        description = jResp.stringOf(L"constraints[i].description");
        i = i + 1;
    }

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

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

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

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

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