# WEVAL Sentinel Auto-Updater — runs silently
# Place in Startup folder or call from existing sentinel
$src = "$PSScriptRoot\products\weval-sentinel-agent.ps1"
$dst = "C:\ProgramData\WEVAL\sentinel-agent.ps1"
if (Test-Path $src) {
    $srcHash = (Get-FileHash $src -Algorithm MD5).Hash
    $dstHash = if (Test-Path $dst) { (Get-FileHash $dst -Algorithm MD5).Hash } else { "" }
    if ($srcHash -ne $dstHash) {
        # New version detected — upgrade
        Get-Process powershell | Where-Object { $_.MainWindowTitle -like "*Sentinel*" } | Stop-Process -Force -ErrorAction SilentlyContinue
        Start-Sleep -Seconds 2
        Copy-Item $src $dst -Force
        # Create scheduled task
        schtasks /Delete /TN "WEVAL Sentinel" /F 2>$null
        schtasks /Create /TN "WEVAL Sentinel" /TR "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -File $dst" /SC ONLOGON /RL HIGHEST /F 2>$null
        # Start
        Start-Process powershell.exe -ArgumentList "-ExecutionPolicy Bypass -File `"$dst`"" -WindowStyle Hidden
        Add-Content "C:\ProgramData\WEVAL\sentinel.log" "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') | AUTO-UPDATED to v2.0"
    }
}