# my-extension installer / updater (Windows).
#
# Easiest: paste this one line into PowerShell —
#   irm https://pats-toolbox.web.app/update.ps1 | iex
#
# First run downloads the latest build to %USERPROFILE%\my-extension and tells you how to load
# it; later runs pull a newer build if there is one. Either way you finish by clicking Reload in
# chrome://extensions (Chrome can't auto-reload an unpacked extension).

$ErrorActionPreference = "Stop"
$Base = "https://pats-toolbox.web.app"
$Dir = Join-Path $HOME "my-extension"

Write-Host "Checking for updates..."
try {
  $info = Invoke-RestMethod -Uri "$Base/version.json" -ErrorAction Stop
} catch {
  Write-Host "Couldn't reach the update server: $($_.Exception.Message)" -ForegroundColor Red
  return
}
if (-not $info.url) {
  Write-Host "No build has been published yet. Ask Pat." -ForegroundColor Yellow
  return
}

$verFile = Join-Path $Dir ".version"
$local = if (Test-Path $verFile) { (Get-Content $verFile -Raw).Trim() } else { "" }
$firstInstall = [string]::IsNullOrEmpty($local)

if ($local -eq $info.version) {
  Write-Host "Already up to date (v$($info.version))." -ForegroundColor Green
  return
}

Write-Host "Downloading v$($info.version)..."
New-Item -ItemType Directory -Force -Path $Dir | Out-Null
$tmp = Join-Path $env:TEMP "my-extension-$($info.version).zip"
Invoke-WebRequest -Uri $info.url -OutFile $tmp
Expand-Archive -Path $tmp -DestinationPath $Dir -Force
Remove-Item $tmp -Force
Set-Content -Path $verFile -Value $info.version

Write-Host ""
Write-Host "Installed v$($info.version) to $Dir" -ForegroundColor Green
if ($firstInstall) {
  Write-Host "First time setup:" -ForegroundColor Cyan
  Write-Host "  1. Open chrome://extensions"
  Write-Host "  2. Turn on 'Developer mode' (top right)"
  Write-Host "  3. Click 'Load unpacked' and select:  $Dir"
  Write-Host "  4. Click the extension icon and sign in (ask Pat for an invite)"
} else {
  Write-Host "Now open chrome://extensions and click Reload on my-extension." -ForegroundColor Cyan
}