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

function Write-Log($msg) {
    Write-Host $msg -foregroundcolor green
    ($msg) | Out-File "log-update-filenotfound.txt" -Append
}

function Update-FileNotFound($site) {
	if ($site.ID -eq $site.WebApplication.Sites[0].ID -or $site.Url -eq "http://intra.jarjestotalo.fi") {
		$expectedUrl = "/_layouts/15/Taloyhtio/Common/PageNotFound.aspx"
	} else {
		$expectedUrl = $site.ServerRelativeUrl + "/_layouts/15/Taloyhtio/Common/PageNotFound.aspx"
	}
	
	Write-Log ("Update page not found url for '" + $site.Url + "' to " + $expectedUrl)
	$site.FileNotFoundUrl = $expectedUrl
}

$site = Get-SPSite $url
Update-FileNotFound $site