Get-FileApi.ps1

function Get-FileApi
{
[cmdletbinding()]
Param(
    [Parameter(Mandatory)]
    [hashtable]
    $Authorization
    ,
    [string]
    $Name
)
    $invokeSplat = @{
        Uri    = "http://localhost:11000/api/file"
        Method = "Get"        
    }

    $headersSplat = @{
        Headers = @{
            Authorization = $Authorization.Authorization
        }
    }

    if (-not [string]::IsNullOrEmpty($Name))
    {
        $headersSplat.Headers.Name = $Name
    }

    $files = Invoke-RestMethod @invokeSplat @headersSplat
    
    if ($files.error)
    {
        throw $files.error.message
    }

    if ([string]::IsNullOrEmpty($Name))
    {
        $files
    }
    else
    {
        $files | Where-Object Name -like $Name
    }
}