# nui-devtools installer, served by deploy/serve.ts. Run:  irm https://nui.cykel-holdet.dk | iex
# Downloads %LOCALAPPDATA%\nui-devtools\nui-devtools.exe when it's missing or its hash differs from the server's
# /version, then starts it. Re-running the one-liner is how you update + launch.
# Wrapped in a script block so `return` never closes the caller's shell (this runs via iex).
& {
	$ErrorActionPreference = 'Stop'
	$ProgressPreference = 'SilentlyContinue' # the Windows PowerShell 5.1 progress bar makes downloads crawl
	# Old .NET defaults lack TLS 1.2: add it, but leave SystemDefault (0) alone — OR-ing into 0 would pin TLS 1.2 only.
	if ([Net.ServicePointManager]::SecurityProtocol -ne 'SystemDefault') {
		[Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12
	}
	$base = 'https://nui.cykel-holdet.dk'
	$dir = Join-Path $env:LOCALAPPDATA 'nui-devtools'
	$exe = Join-Path $dir 'nui-devtools.exe'
	New-Item -ItemType Directory -Force $dir | Out-Null
	Remove-Item "$exe.old" -ErrorAction SilentlyContinue # left by the last update; still locked if that one is running

	$remote = "$(Invoke-RestMethod "$base/version")".Trim()
	if (-not (Test-Path $exe) -or (Get-FileHash $exe -Algorithm SHA256).Hash.ToLower() -ne $remote) {
		Write-Host '  Downloading nui-devtools...'
		$tmp = "$exe.download"
		# Cache-bust by version hash: a new build = a new URL = a guaranteed-fresh fetch through any CDN
		# (Cloudflare edge-caches .exe by default; the bare URL can serve a stale binary after a deploy).
		Invoke-WebRequest "$base/nui-devtools.exe?v=$remote" -OutFile $tmp -UseBasicParsing
		if ((Get-FileHash $tmp -Algorithm SHA256).Hash.ToLower() -ne $remote) {
			Remove-Item $tmp
			Write-Host '  Download was corrupted (hash mismatch) - run the installer again.' -ForegroundColor Red
			return
		}
		# A running exe can't be overwritten but can be renamed: move it aside, then swap the new one in.
		try {
			if (Test-Path $exe) { Move-Item -Force $exe "$exe.old" }
			Move-Item $tmp $exe
		} catch {
			Remove-Item $tmp -ErrorAction SilentlyContinue
			Write-Host "  Couldn't replace nui-devtools.exe: $_" -ForegroundColor Red
			return
		}
	}
	& $exe
}