Param(
	[Parameter(Position=1,Mandatory=$true)][string]$cid,
	[Parameter(Position=2,Mandatory=$false)][string]$grouptags
)

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12;
Write-Host "Checking for if Falcon is already installed.";
$service = Get-Service CSFalconService -ErrorAction SilentlyContinue;
If($null -eq $service) {
	Write-Host "Falcon Not Installed.`nDownloading for Windows";
	mkdir C:\Falcon > $null;
	$ProgressPreference = 'SilentlyContinue';
	Invoke-Webrequest -UseBasicParsing -Uri https://falconinstall.byu.edu/sensor/WindowsSensor.MaverickGyr.exe -Outfile C:\falcon\WindowsSensor.MaverickGyr.exe;
	Write-Host "Installing Falcon";	
	if($null -ne $grouptags -AND $grouptags -ne "") {
		Write-Host "Installing with Grouping tags of $grouptags";
		Invoke-Expression "C:\Falcon\WindowsSensor.MaverickGyr.exe /install /quiet /norestart CID=$cid GROUPING_TAGS=`"$grouptags`"";	
	} else {
		Invoke-Expression "C:\Falcon\WindowsSensor.MaverickGyr.exe /install /quiet /norestart CID=$cid";
	}
	Write-Host "Done";
} else {
	Write-Host "Falcon is already installed.";
}