Dell API - Get Warranty Info from Service Tag

Get-DellWarranty.ps1

Function Get-DellWarranty {
  Param(
    [Parameter(Mandatory,ValueFromPipeline)]
    [String[]] $ServiceTag,

    [Parameter(Mandatory)]
    [string] $APIKey,

    [Parameter(Mandatory)]
    [string] $APISecret,

    [ValidateSet('serviceLevelCode', 'serviceLevelDescription', 'serviceLevelGroup')]
    [string]$EntitlementProperty = 'serviceLevelDescription'
  )
  begin {
    $Results = [System.Collections.ArrayList]@()
    $SecPro = [System.Collections.ArrayList]@()
    
    $SecPro.AddRange(([System.Net.ServicePointManager]::SecurityProtocol -split ', '))
    if ($SecPro -notcontains [System.Net.SecurityProtocolType]::Tls12) {
      $null = $SecPro.Add([System.Net.SecurityProtocolType]::Tls12)
      [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]$SecPro
    }

    try {
      $Auth = Invoke-WebRequest -Uri ('https://apigtwb2c.us.dell.com/auth/oauth/v2/token?client_id={0}&client_secret={1}&grant_type=client_credentials' -f $APIKey, $APISecret) -Method Post -ErrorAction Stop
      $AuthKey = ($Auth.Content | ConvertFrom-Json).access_token
    }
    catch {
      [System.Management.Automation.ErrorRecord]$e = $_
      [PSCustomObject]@{
        Type      = $e.Exception.GetType().FullName
        Exception = $e.Exception.Message
        Reason    = $e.CategoryInfo.Reason
        Target    = $e.CategoryInfo.TargetName
        Line      = $e.InvocationInfo.ScriptLineNumber
        Column    = $e.InvocationInfo.OffsetInLine
      }
      throw $_
    }
  }
  process {
    foreach ($STag in $ServiceTag) {
      $Response = Invoke-WebRequest -Uri ('https://apigtwb2c.us.dell.com/PROD/sbil/eapi/v5/asset-entitlements?servicetags={0}&Method=Get' -f $STag) -Headers @{'Authorization'=('bearer {0}' -f $AuthKey);'Accept'='application/json'}
      $Content = $Response.Content | ConvertFrom-Json
      # $WarrantyStartDate = [datetime]::Parse($Content.Entitlements.StartDate[-1])
      # $WarrantyEndDate = [datetime]::Parse( $Content.Entitlements.EndDate[-1])
      # $WarrantyLevel = ($Content.Entitlements.ServiceLevelDescription)[-1]
      $ShipDate = [datetime]::Parse($Content.ShipDate)
      $Model = $Content.SystemDescription

      $Summary = [ordered]@{
        ServiceTag = $STag
        Model = $Model
        ShipDate = $ShipDate.ToShortDateString()
      }

      $Content.Entitlements.ForEach{
        $Summary[$_.$EntitlementProperty] = $_.EndDate
      }
      
      $Results.Add([pscustomobject]$Summary) > $null
    }
  }
  end {
    return $Results
  }
}