(Lianja) Send JSON REST Request, Get JSON Response

Demonstrates sending a RESTful JSON request, and receiving a JSON response. This example will create a bucket in Google Cloud Storage (which involves sending and receiving JSON).

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// This example will create a bucket in Google Cloud Storage.

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

loGAuth = createobject("CkAuthGoogle")
// Obtain an access token as shown in one of the following examples:
// See Get Access Token using a Service Account JSON Key
// See Get Access Token using a P12 File

loRest = createobject("CkRest")

// Connect using TLS.
llBAutoReconnect = .T.
llSuccess = loRest.Connect("www.googleapis.com",443,.T.,llBAutoReconnect)

// Provide the authentication credentials (i.e. the access key)
llSuccess = loRest.SetAuthGoogle(loGAuth)

// Build the JSON request body for creating a bucket.
// The only required property is the "name", but we'll add more
// to make a better example..
loJsonReqBody = createobject("CkJsonObject")
llSuccess = loJsonReqBody.AddStringAt(-1,"name","chilkat-bucket-c")
llSuccess = loJsonReqBody.AddStringAt(-1,"kind","storage#bucket")
llSuccess = loJsonReqBody.AddStringAt(-1,"location","US")
llSuccess = loJsonReqBody.AddObjectAt(-1,"versioning")

loPObjVersioning = loJsonReqBody.ObjectOf("versioning")
llSuccess = loPObjVersioning.AddBoolAt(-1,"enabled",.T.)
release loPObjVersioning

// Show the HTTP request body we'll be sending.
? loJsonReqBody.Emit()

// Add the required query parameter.
// See https://cloud.google.com/storage/docs/json_api/v1/buckets/insert
llSuccess = loRest.AddQueryParam("project","chilkattest-1050")

// Add the Content-Type HTTP request header.
llSuccess = loRest.AddHeader("Content-Type","application/json; charset=UTF-8")

lcJsonResponseStr = loRest.FullRequestString("POST","/storage/v1/b",loJsonReqBody.Emit())
if (loRest.LastMethodSuccess <> .T.) then
    ? loRest.LastErrorText
    release loGAuth
    release loRest
    release loJsonReqBody
    return
endif

// Show the JSON response.  (See below for a sample JSON response.)
? "Json Response: " + lcJsonResponseStr

// {
//  "kind": "storage#bucket",
//  "id": "chilkat-bucket-c",
//  "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-bucket-c",
//  "projectNumber": "999992999999",
//  "name": "chilkat-bucket-c",
//  "timeCreated": "2016-04-29T21:08:10.451Z",
//  "updated": "2016-04-29T21:08:10.451Z",
//  "metageneration": "1",
//  "owner": {
//   "entity": "project-owners-999992999999"
//  },
//  "location": "US",
//  "versioning": {
//   "enabled": true
//  },
//  "storageClass": "STANDARD",
//  "etag": "CAE="
// }
// 


release loGAuth
release loRest
release loJsonReqBody