(PowerShell) Vonage UC Extend Refresh Access Token

Refreshes the access token for Vonage UC Extend apps.

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

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

# See Get Vonage UC Access Token 
# for sample code showing how to obtain a Vonage access token for desktop apps.

$jsonToken = New-Object Chilkat.JsonObject
$success = $jsonToken.LoadFile("qa_data/tokens/vonage_uc_extend.json")
if ($success -ne $true) {
    $("Failed to load vonage_uc_extend.json")
    exit
}

$oauth2 = New-Object Chilkat.OAuth2

$oauth2.TokenEndpoint = "https://api.vonage.com/token"

# Replace these with actual values.
$oauth2.ClientId = "CLIENT_ID"
$oauth2.ClientSecret = "CLIENT_SECRET"

# Get the "refresh_token"
$oauth2.RefreshToken = $jsonToken.StringOf("refresh_token")

# Send the HTTP POST to refresh the access token..
$oauth2.VerboseLogging = $true
$success = $oauth2.RefreshAccessToken()
if ($success -ne $true) {
    $($oauth2.LastErrorText)
    exit
}

# Load the access token response into the json object 
$jsonToken.Load($oauth2.AccessTokenResponse)

# If an "expires_on" member does not exist, then add the JSON member by
# getting the current system date/time and adding the "expires_in" seconds.
# This way we'll know when the token expires.
if ($jsonToken.HasMember("expires_on") -eq $false) {
    $dtExpire = New-Object Chilkat.CkDateTime
    $dtExpire.SetFromCurrentSystemTime()
    $dtExpire.AddSeconds($jsonToken.IntOf("expires_in"))
    $jsonToken.AppendString("expires_on",$dtExpire.GetAsUnixTimeStr($false))
}

# Save the new JSON access token response to a file.
# The access + refresh tokens contained in this JSON will be needed for the next refresh.
$sbJson = New-Object Chilkat.StringBuilder
$jsonToken.EmitCompact = $false
$jsonToken.EmitSb($sbJson)
$sbJson.WriteFile("qa_data/tokens/vonage_uc_extend.json","utf-8",$false)

$("OAuth2 authorization granted!")
$("New Access Token = " + $oauth2.AccessToken)