(C++) Amazon SP-API Get Order Items

See more Amazon SP-API Examples

Returns detailed order item information for the order that you specify.

For more information, see https://developer-docs.amazon.com/sp-api/docs/orders-api-v0-reference#get-ordersv0ordersorderidorderitems

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#include <CkAuthAws.h>
#include <CkJsonObject.h>
#include <CkRest.h>
#include <CkStringBuilder.h>

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

    // Gets detailed order item information for a specified order ID
    // The order ID is something like "902-1845936-5435065" and it is the AmazonOrderId returned in the JSON when getting the list of orders.  For example:
    // {
    //   "payload": {
    //     "CreatedBefore": "1.569521782042E9",
    //     "Orders": [
    //       {
    //         "AmazonOrderId": "902-1845936-5435065",
    //         "PurchaseDate": "1970-01-19T03:58:30Z",
    // ...

    // However, when using the sandbox, instead use the explicit keyword TEST_CASE_200
    const char *orderId = "TEST_CASE_200";

    CkAuthAws authAws;
    authAws.put_AccessKey("AWS_ACCESS_KEY");
    authAws.put_SecretKey("AWS_SECRET_KEY");
    authAws.put_ServiceName("execute-api");
    // Use the region that is correct for your needs.
    authAws.put_Region("eu-west-1");

    // First get a restricted data token for the given order ID.
    // This requires an LWA access token which cannot be more than 1 hour old.
    // See Fetch SP-API LWA Access Token
    CkJsonObject jsonLwaToken;
    bool success = jsonLwaToken.LoadFile("qa_data/tokens/sp_api_lwa_token.json");
    if (success == false) {
        std::cout << "Failed to load LWA access token." << "\r\n";
        return;
    }

    // Must use the non-sandbox domain for getting the RDT.
    CkRest rest;
    success = rest.Connect("sellingpartnerapi-eu.amazon.com",443,true,true);
    if (success == false) {
        std::cout << rest.lastErrorText() << "\r\n";
        return;
    }

    success = rest.SetAuthAws(authAws);

    // Add the x-amz-access-token request header.
    const char *lwa_token = jsonLwaToken.stringOf("access_token");
    rest.ClearAllHeaders();
    rest.AddHeader("x-amz-access-token",lwa_token);

    // We're going to send a POST with the following JSON body:

    // {
    //   "restrictedResources": [
    //     {
    //       "method": "GET",
    //       "path": "/orders/v0/orders/{orderId}/orderItems",
    //       "dataElements": ["buyerInfo"]
    //     }
    //   ]
    // }

    CkStringBuilder sbPath;
    sbPath.Append("/orders/v0/orders/");
    sbPath.Append(orderId);
    sbPath.Append("/orderItems");

    CkJsonObject jsonRc;
    jsonRc.UpdateString("restrictedResources[0].method","GET");
    jsonRc.UpdateString("restrictedResources[0].path",sbPath.getAsString());
    jsonRc.UpdateString("restrictedResources[0].dataElements[0]","buyerInfo");

    CkStringBuilder sbRequest;
    jsonRc.EmitSb(sbRequest);

    CkStringBuilder sbResponse;
    const char *uri = "/tokens/2021-03-01/restrictedDataToken";
    success = rest.FullRequestSb("POST",uri,sbRequest,sbResponse);
    if (success == false) {
        std::cout << rest.lastErrorText() << "\r\n";
        return;
    }

    // Examine the response status.
    int statusCode = rest.get_ResponseStatusCode();
    if (statusCode != 200) {
        std::cout << "Response status code: " << statusCode << "\r\n";
        std::cout << "Response status text: " << rest.responseStatusText() << "\r\n";
        std::cout << "Response body: " << "\r\n";
        std::cout << sbResponse.getAsString() << "\r\n";
        std::cout << "Failed." << "\r\n";
        return;
    }

    // Get the restricted data token.
    CkJsonObject jsonResp;
    jsonResp.LoadSb(sbResponse);
    const char *restrictedDataToken = jsonResp.stringOf("restrictedDataToken");
    std::cout << "Restricted Data Token: " << restrictedDataToken << "\r\n";

    // ------------------------------------------------------------------------------------------------------------
    // ------------------------------------------------------------------------------------------------------------
    // Now that we have the RDT, we can use it to get information about the order.
    // 
    // Yes, the SP-API is horribly tedious and painful.  You must use an RDT specifically tailored to each request requiring an RDT,
    // the RDT must not be over an hour old, and if you need to get a new RDT you must get it using an LWA token that itself is not
    // more than an hour old.  If the LWA is more than an hour old, you must get a new one.  Ughhh!!!!!
    // ------------------------------------------------------------------------------------------------------------

    // Disconnect from the non-sandbox domain.  This example will use the sandbox.
    // (The RDT was obtained using the non-sandbox domain.  For some reason, the sandbox domain does not work for getting the RDT.)
    rest.Disconnect(100);

    success = rest.Connect("sandbox.sellingpartnerapi-eu.amazon.com",443,true,true);
    if (success == false) {
        std::cout << rest.lastErrorText() << "\r\n";
        return;
    }

    success = rest.SetAuthAws(authAws);

    rest.ClearAllHeaders();
    rest.AddHeader("x-amz-access-token",restrictedDataToken);

    rest.ClearAllQueryParams();
    rest.AddQueryParam("MarketplaceIds","ATVPDKIKX0DER");

    rest.ClearAllPathParams();
    rest.AddPathParam("{orderId}",orderId);

    uri = "/orders/v0/orders/{orderId}/orderItems";
    success = rest.FullRequestNoBodySb("GET",uri,sbResponse);
    if (success == false) {
        std::cout << rest.lastErrorText() << "\r\n";
        return;
    }

    // Examine the response status.
    statusCode = rest.get_ResponseStatusCode();
    if (statusCode != 200) {
        std::cout << "Response status text: " << rest.responseStatusText() << "\r\n";
        std::cout << "Response body: " << "\r\n";
        std::cout << sbResponse.getAsString() << "\r\n";
        std::cout << "Failed." << "\r\n";
        return;
    }

    // If successful, gets a JSON response such as the following:

    // {
    //   "payload": {
    //     "AmazonOrderId": "902-1845936-5435065",
    //     "OrderItems": [
    //       {
    //         "ASIN": "B00551Q3CS",
    //         "OrderItemId": "05015851154158",
    //         "SellerSKU": "NABetaASINB00551Q3CS",
    //         "Title": "B00551Q3CS [Card Book]",
    //         "QuantityOrdered": 1,
    //         "QuantityShipped": 0,
    //         "ProductInfo": {
    //           "NumberOfItems": 1
    //         },
    //         "ItemPrice": {
    //           "CurrencyCode": "USD",
    //           "Amount": "10.00"
    //         },
    //         "ItemTax": {
    //           "CurrencyCode": "USD",
    //           "Amount": "1.01"
    //         },
    //         "PromotionDiscount": {
    //           "CurrencyCode": "USD",
    //           "Amount": "0.00"
    //         },
    //         "IsGift": false,
    //         "ConditionId": "New",
    //         "ConditionSubtypeId": "New",
    //         "IsTransparency": false,
    //         "SerialNumberRequired": false,
    //         "IossNumber": "",
    //         "DeemedResellerCategory": "IOSS",
    //         "StoreChainStoreId": "ISPU_StoreId",
    //         "BuyerRequestedCancel": {
    //           "IsBuyerRequestedCancel": true,
    //           "BuyerCancelReason": "Found cheaper somewhere else."
    //         }
    //       }
    //     ]
    //   }
    // }

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

    CkJsonObject json;

    json.LoadSb(sbResponse);
    json.put_EmitCompact(false);
    std::cout << json.emit() << "\r\n";

    const char *ASIN = 0;
    const char *OrderItemId = 0;
    const char *SellerSKU = 0;
    const char *Title = 0;
    int QuantityOrdered;
    int QuantityShipped;
    int NumberOfItems;
    const char *CurrencyCode = 0;
    const char *Amount = 0;
    const char *ItemTaxCurrencyCode = 0;
    const char *ItemTaxAmount = 0;
    const char *PromotionDiscountCurrencyCode = 0;
    const char *PromotionDiscountAmount = 0;
    bool IsGift;
    const char *ConditionId = 0;
    const char *ConditionSubtypeId = 0;
    bool IsTransparency;
    bool SerialNumberRequired;
    const char *IossNumber = 0;
    const char *DeemedResellerCategory = 0;
    const char *StoreChainStoreId = 0;
    bool IsBuyerRequestedCancel;
    const char *BuyerCancelReason = 0;

    const char *AmazonOrderId = json.stringOf("payload.AmazonOrderId");
    int i = 0;
    int count_i = json.SizeOfArray("payload.OrderItems");
    while (i < count_i) {
        json.put_I(i);
        ASIN = json.stringOf("payload.OrderItems[i].ASIN");
        OrderItemId = json.stringOf("payload.OrderItems[i].OrderItemId");
        SellerSKU = json.stringOf("payload.OrderItems[i].SellerSKU");
        Title = json.stringOf("payload.OrderItems[i].Title");
        QuantityOrdered = json.IntOf("payload.OrderItems[i].QuantityOrdered");
        QuantityShipped = json.IntOf("payload.OrderItems[i].QuantityShipped");
        NumberOfItems = json.IntOf("payload.OrderItems[i].ProductInfo.NumberOfItems");
        CurrencyCode = json.stringOf("payload.OrderItems[i].ItemPrice.CurrencyCode");
        Amount = json.stringOf("payload.OrderItems[i].ItemPrice.Amount");
        ItemTaxCurrencyCode = json.stringOf("payload.OrderItems[i].ItemTax.CurrencyCode");
        ItemTaxAmount = json.stringOf("payload.OrderItems[i].ItemTax.Amount");
        PromotionDiscountCurrencyCode = json.stringOf("payload.OrderItems[i].PromotionDiscount.CurrencyCode");
        PromotionDiscountAmount = json.stringOf("payload.OrderItems[i].PromotionDiscount.Amount");
        IsGift = json.BoolOf("payload.OrderItems[i].IsGift");
        ConditionId = json.stringOf("payload.OrderItems[i].ConditionId");
        ConditionSubtypeId = json.stringOf("payload.OrderItems[i].ConditionSubtypeId");
        IsTransparency = json.BoolOf("payload.OrderItems[i].IsTransparency");
        SerialNumberRequired = json.BoolOf("payload.OrderItems[i].SerialNumberRequired");
        IossNumber = json.stringOf("payload.OrderItems[i].IossNumber");
        DeemedResellerCategory = json.stringOf("payload.OrderItems[i].DeemedResellerCategory");
        StoreChainStoreId = json.stringOf("payload.OrderItems[i].StoreChainStoreId");
        IsBuyerRequestedCancel = json.BoolOf("payload.OrderItems[i].BuyerRequestedCancel.IsBuyerRequestedCancel");
        BuyerCancelReason = json.stringOf("payload.OrderItems[i].BuyerRequestedCancel.BuyerCancelReason");
        i = i + 1;
    }

    std::cout << "Success!" << "\r\n";
    }