VBScript GMail: Get a specific message (format="minimal")

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Gets a specific message using format=minimal.

Documentation: https://developers.google.com/gmail/api/v1/reference/users/messages/get

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
Set outFile = fso.CreateTextFile("output.txt", True)

set rest = CreateObject("Chilkat_9_5_0.Rest")

'   Provide a previously obtained OAuth2 access token.
set oauth2 = CreateObject("Chilkat_9_5_0.OAuth2")
oauth2.AccessToken = "OAUTH2_ACCESS_TOKEN"
success = rest.SetAuthOAuth2(oauth2)

success = rest.Connect("www.googleapis.com",443,1,1)
If (success <> 1) Then
    outFile.WriteLine(rest.LastErrorText)
    WScript.Quit
End If

success = rest.AddPathParam("messageId","15fc237e79da4174")

success = rest.AddQueryParam("format","minimal")

set sbJson = CreateObject("Chilkat_9_5_0.StringBuilder")
success = rest.FullRequestNoBodySb("GET","/gmail/v1/users/me/messages/messageId",sbJson)
If (success <> 1) Then
    outFile.WriteLine(rest.LastErrorText)
    WScript.Quit
End If

If (rest.ResponseStatusCode <> 200) Then
    outFile.WriteLine("Received error response code: " & rest.ResponseStatusCode)
    outFile.WriteLine("Response body:")
    outFile.WriteLine(sbJson.GetAsString())
    WScript.Quit
End If

set json = CreateObject("Chilkat_9_5_0.JsonObject")
success = json.LoadSb(sbJson)

'  The following code parses the JSON response.
'  A sample JSON response is shown below the sample code.

id = json.StringOf("id")
threadId = json.StringOf("threadId")
snippet = json.StringOf("snippet")
historyId = json.StringOf("historyId")
internalDate = json.StringOf("internalDate")
sizeEstimate = json.IntOf("sizeEstimate")
i = 0
count_i = json.SizeOfArray("labelIds")
Do While i < count_i
    json.I = i
    strVal = json.StringOf("labelIds[i]")
    i = i + 1
Loop

outFile.WriteLine("Example Completed.")

outFile.Close

Sample JSON Response Body

{
  "id": "15fc237e79da4174",
  "threadId": "15fc237e79da4174",
  "labelIds": [
    "IMPORTANT",
    "SENT",
    "INBOX"
  ],
  "snippet": "This is a test email with 2 attachments.",
  "historyId": "1582",
  "internalDate": "1510791964000",
  "sizeEstimate": 11153
}