(Unicode C++) QuickBooks - Query a Customer

Demonstrates how to query QuickBooks customers.

A sample JSON response body is available at Sample Quickbooks Customer Query JSON Response

For more information, see https://developer.intuit.com/app/developer/qbo/docs/api/accounting/all-entities/customer#query-a-customer

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#include <CkJsonObjectW.h>
#include <CkRestW.h>
#include <CkStringBuilderW.h>

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

    // Get our previously obtained OAuth2 access token, which should contain JSON like this:
    // {
    //   "expires_in": 3600,
    //   "x_refresh_token_expires_in": 8726400,
    //   "refresh_token": "L011546037639r ... 3vR2DrbOmg0Sdagw",
    //   "access_token": "eyJlbmMiOiJBMTI4Q0 ... oETJEMbeggg",
    //   "token_type": "bearer"
    // }

    CkJsonObjectW jsonToken;
    bool success = jsonToken.LoadFile(L"qa_data/tokens/qb-access-token.json");

    CkRestW rest;

    // Connect using TLS.
    // A single REST object, once connected, can be used for many Quickbooks REST API calls.
    // The auto-reconnect indicates that if the already-established HTTPS connection is closed,
    // then it will be automatically re-established as needed.
    bool bAutoReconnect = true;
    success = rest.Connect(L"sandbox-quickbooks.api.intuit.com",443,true,bAutoReconnect);
    if (success != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    CkStringBuilderW sbAuth;
    sbAuth.Append(L"Bearer ");
    sbAuth.Append(jsonToken.stringOf(L"access_token"));
    rest.put_Authorization(sbAuth.getAsString());

    rest.AddHeader(L"Accept",L"application/json");
    rest.put_AllowHeaderFolding(false);

    const wchar_t *query = L"select * from Customer";
    rest.AddQueryParam(L"query",query);
    rest.AddQueryParam(L"minorversion",L"45");

    // The company ID is 123146096291789
    const wchar_t *responseBody = rest.fullRequestNoBody(L"GET",L"/v3/company/123146096291789/query");
    if (rest.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    // We should expect a 200 response if successful.
    if (rest.get_ResponseStatusCode() != 200) {
        wprintf(L"Request Header: \n");
        wprintf(L"%s\n",rest.lastRequestHeader());
        wprintf(L"----\n");
        wprintf(L"Response StatusCode = %d\n",rest.get_ResponseStatusCode());
        wprintf(L"Response StatusLine: %s\n",rest.responseStatusText());
        wprintf(L"Response Header:\n");
        wprintf(L"%s\n",rest.responseHeader());
        wprintf(L"%s\n",responseBody);
        return;
    }

    // Load the JSON response into a JSON object for parsing.
    // A sample JSON response is shown below.
    CkJsonObjectW json;
    json.put_EmitCompact(false);
    json.Load(responseBody);

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

    // Iterate over each customer returned.
    int numRecords = json.SizeOfArray(L"QueryResponse.Customer");
    int i = 0;
    while (i < numRecords) {

        json.put_I(i);
        wprintf(L"Name: %s\n",json.stringOf(L"QueryResponse.Customer[i].FullyQualifiedName"));
        wprintf(L"Id: %s\n",json.stringOf(L"QueryResponse.Customer[i].Id"));
        wprintf(L"City: %s\n",json.stringOf(L"QueryResponse.Customer[i].BillAddr.City"));
        wprintf(L"----\n");
        i = i + 1;
    }

    wprintf(L"Success.\n");
    }