Check website list file, one per line, to se if it is online

check-sites.ps1

param(
    [string]$FilePath
)

if (-not (Test-Path $FilePath)) {
    Write-Host "File not found: $FilePath" -ForegroundColor Red
    exit
}

$sites = Get-Content $FilePath

foreach ($site in $sites) {
    $site = $site.Trim()

    if ([string]::IsNullOrWhiteSpace($site)) {
        continue
    }

    if ($site -notmatch '^https?://') {
        $url = "http://$site"
    } else {
        $url = $site
    }

    try {
        $request = [System.Net.HttpWebRequest]::Create($url)
        $request.Method = "HEAD"
        $request.AllowAutoRedirect = $false
        $request.Timeout = 5000

        $response = $request.GetResponse()
        $statusCode = [int]$response.StatusCode

        if ($statusCode -ge 300 -and $statusCode -lt 400) {
            $redirect = $response.Headers["Location"]
            Write-Host "$site SUCCESS (REDIRECT to: $redirect)" -ForegroundColor Green
        }
        elseif ($statusCode -eq 200) {
            Write-Host "$site SUCCESS" -ForegroundColor Green
        }
        else {
            Write-Host "$site FAIL" -ForegroundColor Red
        }

        $response.Close()
    }
    catch {
        try {
            if ($site -notmatch '^https?://') {
                $url = "https://$site"

                $request = [System.Net.HttpWebRequest]::Create($url)
                $request.Method = "HEAD"
                $request.AllowAutoRedirect = $false
                $request.Timeout = 5000

                $response = $request.GetResponse()
                $statusCode = [int]$response.StatusCode

                if ($statusCode -ge 300 -and $statusCode -lt 400) {
                    $redirect = $response.Headers["Location"]
                    Write-Host "$site SUCCESS (REDIRECT to: $redirect)" -ForegroundColor Green
                }
                elseif ($statusCode -eq 200) {
                    Write-Host "$site SUCCESS" -ForegroundColor Green
                }
                else {
                    Write-Host "$site FAIL" -ForegroundColor Red
                }

                $response.Close()
            }
            else {
                Write-Host "$site FAIL" -ForegroundColor Red
            }
        }
        catch {
            Write-Host "$site FAIL" -ForegroundColor Red
        }
    }
}