Update-NetboxStatus.ps1

Param(
  [Parameter(Mandatory=$false)][switch]$shutdown=$false,
  [Parameter(Mandatory=$false)][switch]$vm=$false
)

# Powershell refuses to connect to the Netbox API on our setup without this.
add-type @"
    using System.Net;
    using System.Security.Cryptography.X509Certificates;
    public class TrustAllCertsPolicy : ICertificatePolicy {
        public bool CheckValidationResult(
            ServicePoint srvPoint, X509Certificate certificate,
            WebRequest request, int certificateProblem) {
            return true;
        }
    }
"@
[System.Net.ServicePointManager]::CertificatePolicy = New-Object TrustAllCertsPolicy
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

# Some useful settings.
$token = "TOKEN"
$uri = "https://netbox.domain.com/api"

# Set API Headers
$headers = New-Object "System.Collections.Generic.Dictionary[[String],[String]]"
$headers.Add("Authorization", "Token $token")
$headers.Add("Content-Type", 'application/json')
$headers.Add("Accept", 'application/json')

# We check if the machine is a VM or a physical box using the parameter $VM.
if($vm) {
    $MachineID = ((Invoke-WebRequest -uri "$uri/virtualization/virtual-machines/?q=$(hostname)" -Method Get -Headers $headers).content | convertfrom-json).results[0].id

    # If $shutdown is false, the machine just turned on. Else we're turning off!
    if(-not $shutdown) {Invoke-WebRequest -Uri "$uri/virtualization/virtual-machines/$MachineID/" -Method PATCH -Headers $headers -Body $(@{status=1}| ConvertTo-Json)}
    else {Invoke-WebRequest -Uri "$uri/virtualization/virtual-machines/$MachineID/" -Method PATCH -Headers $headers -Body $(@{status=0}| ConvertTo-Json)}
}
else {
    $MachineID = ((Invoke-WebRequest -uri "$uri/dcim/devices/?q=$(hostname)" -Method Get -Headers $headers).content | convertfrom-json).results[0].id
    $MachineID
    # If $shutdown is false, the machine just turned on. Else we're turning off!
    if(-not $shutdown) {Invoke-WebRequest -Uri "$uri/dcim/devices/$MachineID/" -Method PATCH -Headers $headers -Body $(@{status=1}| ConvertTo-Json)}
    else {Invoke-WebRequest -Uri "$uri/dcim/devices/$MachineID/" -Method PATCH -Headers $headers -Body $(@{status=0}| ConvertTo-Json)}
}