Powershell v3.0+ to toggle the medium type of a Scriptrock node

Toggle-ScriptrockNodeMediumType

$target = "https://my.scriptrock.com"
$apiKey = "api_key"
$secretKey = "secret_key"
$nodeName = 'node_name'

$ErrorActionPreference = "Stop"

# A reuseable enum for meduim types
Add-Type -TypeDefinition @"
   public enum MediumType
   {
        AGENT = 1,
        SSH = 3,
        TELNET = 5,
        HTTPS = 6,
        WINRM = 7,
        SERVICE = 8,
        WEB = 9,
   }
"@
 
# build authorization header
$token = $apiKey + $secretKey
$authToken = 'Token token="' + $token + '"'
$headers = @{'Authorization'=$authToken;'Content-Type'='application/json'; 'Accept'='application/json'}

# get host node id from host name
$resource = "/api/v1/nodes/lookup.json?name=$nodeName"
$lookUpUrl = $applianceUrl + $resource
$hostId = (Invoke-RestMethod -Method Get -Uri $lookUpUrl -Headers $headers -TimeoutSec 300).node_id

# get nodes current medium type for restoration later
$resource = "api/v1/nodes/$hostId.json"
$nodeUrl = $applianceUrl + $resource
$currentMediumType = (Invoke-RestMethod -Method GET -Uri $nodeUrl -Headers $headers -TimeoutSec 300).medium_type 

$agentMediumType = ([MediumType]::AGENT -as [int])

# set node medium type to 'agent'
Invoke-WebRequest -Method PUT -Uri $nodeUrl -Headers $headers -Body "{`"node`": {`"medium_type`": $agentMediumType }}"

# do deployment stuff
if((Invoke-RestMethod -Method GET -Uri $nodeUrl -Headers $headers -TimeoutSec 300).medium_type -eq $agentMediumType){
    write-host 'Do Deployment things here.'
}

# reset node to original medium type
Invoke-WebRequest -Method put -Uri $nodeUrl -Headers $headers -Body "{`"node`": {`"medium_type`": $currentMediumType}}"