#!ps
#timeout=1000000

$registryPathDS = "HKLM:\SOFTWARE\RuffianSoftware\TechIdentityManager\"

# Check if the registry key exists
$keyExistsDS = Test-Path -Path $registryPathDS

# Output the result
if ($keyExistsDS) {
    Write-Output "Data found indicating installation of TechIDAgent"
} else {
    Write-Error "No Data found indicating installation of TechIDAgent - NOT UPDATING"
    exit 0
}

$version = 'TechIDAgent_6.877windows'
$PathRS = 'c:\Program Files\Ruffian Software'
$SourceFile = "https://ch001.ruffiansoftware.com/release/files/TechIDAgent.Windows.6.877.zip"
if ($SourceFile -like "{{*") {
	$SourceFile = "https://ch001.ruffiansoftware.com/release/files/TechIDAgent.Windows.6.877.zip"
}
$DestFile = "$PathRS\$version.zip"

New-Item -ItemType Directory -Force -Path $PathRS 

if (Test-Path "$DestFile") 
{
	Remove-Item "$DestFile" 
	# seems like we need to delay before overwritting a file we just deleted? 
	Start-Sleep 2
}

# some older systems have to be told what TLS to use because they default to 1.1 which is no longer supported
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
Invoke-WebRequest -Uri "$SourceFile" -OutFile "$DestFile"

# do a simple hash check to make sure we got a file that we are expecting. 
# This is only one of many ways we at Ruffian Software fight supply chain attacks. Everyone needs to do thier part. 
$hash = (Get-FileHash -Path "$DestFile").Hash
if ($hash -ne "84212ec2e0328ecab876dd160e0fee584ce11889dc77ea90037be25edf3093e6")
{
	Write-Error 'Hash of downloaded file does not match expected value.' -ErrorAction Stop
}

# make sure the path we are about to expand into doesn't already have an executable there. 
if (Test-Path "$PathRS\$version\TechIDAgent.exe") 
{
	start-process -nonewwindow -wait "$PathRS\$version\TechIDAgent.exe" -argumentlist uninstall
	Remove-Item -Recurse -Force "$PathRS\$version"
	# seems like we need to delay before overwritting a file we just deleted? 
	Start-Sleep 2
}

Expand-Archive -LiteralPath "$DestFile" -DestinationPath "$PathRS\$version"

start-process -nonewwindow -wait "$PathRS\$version\TechIDAgent.exe" -argumentlist update