(PowerBuilder) Amazon SP-API Request an LWA access token

See more Amazon SP-API Examples

Request an LWA access token, make a secure HTTP POST to the LWA authentication server (https://api.amazon.com/auth/o2/token)

For more information, see https://developer-docs.amazon.com/sp-api/docs/connecting-to-the-selling-partner-api

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Http
oleobject loo_Req
oleobject loo_Resp
integer li_StatusCode
oleobject loo_Json
integer li_Success

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

loo_Http = create oleobject
// Use "Chilkat_9_5_0.Http" for versions of Chilkat < 10.0.0
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

// Implements the following CURL command:

// curl -X POST https://example.com/auth/o2/token \
//   -H "Host: api.amazon.com" \
//   -H "Content-Type: application/x-www-form-urlencoded;charset=UTF-8" \
//   -d "grant_type=refresh_token" \
//   -d "refresh_token=Aztr|..." \
//   -d "client_id=foodev" \
//   -d "client_secret=Y76SDl2F"

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

loo_Req = create oleobject
// Use "Chilkat_9_5_0.HttpRequest" for versions of Chilkat < 10.0.0
li_rc = loo_Req.ConnectToNewObject("Chilkat.HttpRequest")

loo_Req.AddParam("grant_type","refresh_token")
loo_Req.AddParam("refresh_token","Aztr|...")
loo_Req.AddParam("client_id","foodev")
loo_Req.AddParam("client_secret","Y76SDl2F")

loo_Req.AddHeader("Host","api.amazon.com")

loo_Resp = loo_Http.PostUrlEncoded("https://api.amazon.com/auth/o2/token",loo_Req)
if loo_Http.LastMethodSuccess = 0 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Http
    destroy loo_Req
    return
end if

li_StatusCode = loo_Resp.StatusCode
Write-Debug "Status Code = " + string(li_StatusCode)

loo_Json = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")

loo_Json.Load(loo_Resp.BodyStr)
destroy loo_Resp

loo_Json.EmitCompact = 0
Write-Debug loo_Json.Emit()

if li_StatusCode <> 200 then
    Write-Debug "Failed."
    destroy loo_Http
    destroy loo_Req
    destroy loo_Json
    return
end if

// Success returns this JSON:

// {
//   "access_token": "Atza|...",
//   "refresh_token": "Atzr|...",
//   "token_type": "bearer",
//   "expires_in": 3600
// }

// Save the JSON token to a file for use in subsequent calls.
// (this example is passing a relative file path.  You don't need to save to a file
// if, for example, you keep the access token in-memory for subsequent use...)
li_Success = loo_Json.WriteFile("qa_data/tokens/sp_api_lwa_token.json")

Write-Debug "access_token: " + loo_Json.StringOf("access_token")
Write-Debug "Success."


destroy loo_Http
destroy loo_Req
destroy loo_Json