(Lianja) 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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// 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"
// }

loJsonToken = createobject("CkJsonObject")
llSuccess = loJsonToken.LoadFile("qa_data/tokens/qb-access-token.json")

loRest = createobject("CkRest")

// 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.
llBAutoReconnect = .T.
llSuccess = loRest.Connect("sandbox-quickbooks.api.intuit.com",443,.T.,llBAutoReconnect)
if (llSuccess <> .T.) then
    ? loRest.LastErrorText
    release loJsonToken
    release loRest
    return
endif

loSbAuth = createobject("CkStringBuilder")
loSbAuth.Append("Bearer ")
loSbAuth.Append(loJsonToken.StringOf("access_token"))
loRest.Authorization = loSbAuth.GetAsString()

loRest.AddHeader("Accept","application/json")
loRest.AllowHeaderFolding = .F.

lcQuery = "select * from Customer"
loRest.AddQueryParam("query",lcQuery)
loRest.AddQueryParam("minorversion","45")

// The company ID is 123146096291789
lcResponseBody = loRest.FullRequestNoBody("GET","/v3/company/123146096291789/query")
if (loRest.LastMethodSuccess <> .T.) then
    ? loRest.LastErrorText
    release loJsonToken
    release loRest
    release loSbAuth
    return
endif

// We should expect a 200 response if successful.
if (loRest.ResponseStatusCode <> 200) then
    ? "Request Header: "
    ? loRest.LastRequestHeader
    ? "----"
    ? "Response StatusCode = " + str(loRest.ResponseStatusCode)
    ? "Response StatusLine: " + loRest.ResponseStatusText
    ? "Response Header:"
    ? loRest.ResponseHeader
    ? lcResponseBody
    release loJsonToken
    release loRest
    release loSbAuth
    return
endif

// Load the JSON response into a JSON object for parsing.
// A sample JSON response is shown below.
loJson = createobject("CkJsonObject")
loJson.EmitCompact = .F.
loJson.Load(lcResponseBody)

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

// Iterate over each customer returned.
lnNumRecords = loJson.SizeOfArray("QueryResponse.Customer")
i = 0
do while i < lnNumRecords

    loJson.I = i
    ? "Name: " + loJson.StringOf("QueryResponse.Customer[i].FullyQualifiedName")
    ? "Id: " + loJson.StringOf("QueryResponse.Customer[i].Id")
    ? "City: " + loJson.StringOf("QueryResponse.Customer[i].BillAddr.City")
    ? "----"
    i = i + 1
enddo

? "Success."


release loJsonToken
release loRest
release loSbAuth
release loJson