Powershell script to set Pagerduty in maintenance mode for x minutes

pagerduty-maintenance.ps1

param (
    [int]$minutes = 3,
    [string]$requesterId = "<your-pager-duty-user-id>",
    [string]$apiKey = "<your-pager-duty-api-token>",
    [string]$description = "Deploy new version of app",
    [string]$serviceIDs = "'<serviceId1>', '<serviceId2>', '<serviceId..>'"
 )

function Execute-HTTPPostCommand() {
    param(
        [string] $target = $null
    )
    $webRequest = [System.Net.WebRequest]::Create($target)
    $webRequest.ContentType = "application/json"
    $PostStr = [System.Text.Encoding]::UTF8.GetBytes($Post)
    $webrequest.ContentLength = $PostStr.Length
    $webRequest.ServicePoint.Expect100Continue = $false
    $webRequest.Headers.Add("Authorization", "Token token=$apiKey");
    $webRequest.Method = "POST"

    $requestStream = $webRequest.GetRequestStream()
    $requestStream.Write($PostStr, 0,$PostStr.length)
    $requestStream.Close()

    [System.Net.WebResponse] $resp = $webRequest.GetResponse();
    $rs = $resp.GetResponseStream();
    [System.IO.StreamReader] $sr = New-Object System.IO.StreamReader -argumentList $rs;
    [string] $results = $sr.ReadToEnd();

    return $results;
}

$currentdt = ((Get-Date)).ToString("yyyy-MM-ddTHH:mm:sszzzzZ");
$currentEnddt = ((Get-Date).AddMinutes($minutes)).ToString("yyyy-MM-ddTHH:mm:sszzzzZ");

$post = "{    
      'maintenance_window': {
        'start_time': '$currentdt',
        'end_time': '$currentEnddt',
        'description': '$description',
        'service_ids': [
          $serviceIDs
        ]
      },
      'requester_id': '$requesterId'
    }" 
Write-Host  $post
$URL = "https://parkmobile.pagerduty.com/api/v1/maintenance_windows"

Execute-HTTPPostCommand $URL