(Lianja) Shopify GraphQL Simple Query (Get Shop Object)

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Demonstrates a simple Shopify GraphQL query to get specific fields of the Shop object.

For more information, see https://www.shopify.com/partners/blog/shopify-graphql-learning-kit#query-structure

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

loHttp = createobject("CkHttp")

// This example will use private authentication (which is HTTP Basic authentication)
// See the other Chilkat Shopify examples for OAuth2 authentication.
// To use HTTP Basic Authentication with any HTTP request, we simply set the Login, Password, and BasicAuth properties.
// Important: All HTTP requests using Basic authentication must be over SSL/TLS.
loHttp.Login = "SHOPIFY_PRIVATE_API_KEY"
loHttp.Password = "SHOPIFY_PRIVATE_API_SECRET_KEY"
loHttp.BasicAuth = .T.

// We're going to do a POST  https://{shop}.myshopify.com/admin/api/2021-04/graphql.json
// Make sure to replace "chilkat" with your store name.

// The body of the request will be:
//    {
//        shop {
//            id
//            name
//            description
//            email
//         }
//     }

// The above query is not JSON.  It looks like JSON, but it's actually not.
// We'll just make it one line:

lcQuery = "{ shop { id name description email } }"

// My store name is "chilkat".  Use your store name here instead.
lcUrl = "https://chilkat.myshopify.com/admin/api/2021-04/graphql.json"

loResp = loHttp.PText("POST",lcUrl,lcQuery,"utf-8","application/graphql",.F.,.F.)
if (loHttp.LastMethodSuccess <> .T.) then
    ? loHttp.LastErrorText
    release loHttp
    return
endif

// Examine the response code.
if (loResp.StatusCode <> 200) then
    ? "Received error response code: " + str(loResp.StatusCode)
    ? "Response body:"
    ? loResp.BodyStr
    release loResp
    release loHttp
    return
endif

loSbResponseBody = createobject("CkStringBuilder")
loResp.GetBodySb(loSbResponseBody)
loJResp = createobject("CkJsonObject")
loJResp.LoadSb(loSbResponseBody)
loJResp.EmitCompact = .F.

? "Response Body:"
? loJResp.Emit()

lnRespStatusCode = loResp.StatusCode
? "Response Status Code = " + str(lnRespStatusCode)
if (lnRespStatusCode >= 400) then
    ? "Response Header:"
    ? loResp.Header
    ? "Failed."
    release loResp
    release loHttp
    release loSbResponseBody
    release loJResp
    return
endif

release loResp

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

// {
//   "data": {
//     "shop": {
//       "id": "gid:\/\/shopify\/Shop\/24198053",
//       "name": "chilkat",
//       "description": null,
//       "email": "admin@chilkatsoft.com"
//     }
//   },
//   "extensions": {
//     "cost": {
//       "requestedQueryCost": 1,
//       "actualQueryCost": 1,
//       "throttleStatus": {
//         "maximumAvailable": 1000.0,
//         "currentlyAvailable": 999,
//         "restoreRate": 50.0
//       }
//     }
//   }
// }

// Sample code for parsing the JSON response...
// Use the following online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON

lcShopId = loJResp.StringOf("data.shop.id")
lcShopName = loJResp.StringOf("data.shop.name")
lcShopDescription = loJResp.StringOf("data.shop.description")
lcShopEmail = loJResp.StringOf("data.shop.email")
lnCostRequestedQueryCost = loJResp.IntOf("extensions.cost.requestedQueryCost")
lnCostActualQueryCost = loJResp.IntOf("extensions.cost.actualQueryCost")
lcCostThrottleStatusMaximumAvailable = loJResp.StringOf("extensions.cost.throttleStatus.maximumAvailable")
lnCostThrottleStatusCurrentlyAvailable = loJResp.IntOf("extensions.cost.throttleStatus.currentlyAvailable")
lcCostThrottleStatusRestoreRate = loJResp.StringOf("extensions.cost.throttleStatus.restoreRate")

? "Shop name: " + lcShopName
// ...


release loHttp
release loSbResponseBody
release loJResp