param(
    [Parameter(Mandatory=$true)]
    [string]$url
)

function Write-File($msg)
{
    ($msg) | Out-File "log-page-layouts.txt" -Append
}

function Write-Info($msg)
{
    Write-Host $msg -foregroundcolor green
    Write-File $msg
}

function Write-Warn($msg)
{
    Write-Host $msg -foregroundcolor yellow
    Write-File $msg
}

function Hide-Pages-From-Global-Nav-Page($publishingPage)
{
    $file = $publishingPage.ListItem.File
    Write-Info ("Check page: " + $file.Url)
    $publishingPage.IncludeInGlobalNavigation = $false
    #$publishingPage.Update()
}

function Hide-Pages-From-Global-Nav-Web($web, $isCondo)
{
    Write-Info ("Hide pages for web: " + $web.Url)
    $pubWeb = [Microsoft.SharePoint.Publishing.PublishingWeb]::GetPublishingWeb($web)
    $pages = $pubWeb.GetPublishingPages()
    foreach ($page in $pages)
    {
        Hide-Pages-From-Global-Nav-Page $page
    }

    if (-not $isCondo)
    {
        Write-Warn ("Hide pages")
        $pubWeb.Navigation.GlobalIncludePages = $false
        $pubWeb.Update()
    }

    foreach ($subWeb in $web.Webs)
    {
        Hide-Pages-From-Global-Nav-Web $subWeb $false
    }
}

function Hide-Pages-From-Global-Nav-Site($site)
{
    foreach ($web in $site.RootWeb.Webs)
    {
        Hide-Pages-From-Global-Nav-Web $web $true
    }
}

$site = Get-SPSite $url
Hide-Pages-From-Global-Nav-Site $site
#$web = Get-SPWeb $url
#Hide-Pages-From-Global-Nav-Web $web $true