PowerBuilder

Get a List of Message IDs in GMail User's Mailbox

See more GMail REST API Examples

Demonstrates how to get a list of message IDs in a GMail mailbox. The "userId" can be either the user's email address or the special value "me" to indicate the authenticated user. PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Http
oleobject loo_Resp
oleobject loo_JsonResponse
string ls_Id
string ls_ThreadId
integer li_ResultSizeEstimate
integer i
integer li_Count_i

li_Success = 0

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

loo_Http = create oleobject
li_rc = loo_Http.ConnectToNewObject("Chilkat.Http")
if li_rc < 0 then
    destroy loo_Http
    MessageBox("Error","Connecting to COM object failed")
    return
end if

loo_Http.AuthToken = "ACCESS_TOKEN"

loo_Http.Accept = "application/json"

loo_Resp = create oleobject
li_rc = loo_Resp.ConnectToNewObject("Chilkat.HttpResponse")

li_Success = loo_Http.HttpNoBody("GET","https://www.googleapis.com/gmail/v1/users/userId/messages",loo_Resp)
if li_Success = 0 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Http
    destroy loo_Resp
    return
end if

Write-Debug "Response Status Code: " + string(loo_Resp.StatusCode)

loo_JsonResponse = create oleobject
li_rc = loo_JsonResponse.ConnectToNewObject("Chilkat.JsonObject")

loo_JsonResponse.Load(loo_Resp.BodyStr)
loo_JsonResponse.EmitCompact = 0
Write-Debug loo_JsonResponse.Emit()

if loo_Resp.StatusCode <> 200 then
    Write-Debug "Failed."
    destroy loo_Http
    destroy loo_Resp
    destroy loo_JsonResponse
    return
end if

// {
//   "messages": [
//     users.messages Resource
//   ],
//   "nextPageToken": string,
//   "resultSizeEstimate": unsigned integer
// }

li_ResultSizeEstimate = loo_JsonResponse.IntOf("resultSizeEstimate")
i = 0
li_Count_i = loo_JsonResponse.SizeOfArray("messages")
do while i < li_Count_i
    loo_JsonResponse.I = i
    ls_Id = loo_JsonResponse.StringOf("messages[i].id")
    ls_ThreadId = loo_JsonResponse.StringOf("messages[i].threadId")
    i = i + 1
loop


destroy loo_Http
destroy loo_Resp
destroy loo_JsonResponse