# HelpMeTest CLI installer for Windows (PowerShell)
# Usage: irm https://helpmetest.com/install.ps1 | iex
$ErrorActionPreference = 'Stop'

$BaseUrl = 'https://helpmetest.com'
$ProgName = 'helpmetest'

function Fail($msg) { Write-Host "Error: $msg" -ForegroundColor Red; exit 1 }

# Only 64-bit Windows is published.
$arch = $env:PROCESSOR_ARCHITECTURE
if ($arch -ne 'AMD64' -and $arch -ne 'ARM64') {
  Fail "unsupported architecture: $arch (only 64-bit Windows is supported)"
}

Write-Host "Resolving latest release..."
try { $release = Invoke-RestMethod -Uri "$BaseUrl/install.json" -UseBasicParsing }
catch { Fail "could not reach $BaseUrl/install.json ($($_.Exception.Message))" }

$asset = $release.Assets | Where-Object { $_.OS -eq 'windows' -and $_.Type -eq 'zip' } | Select-Object -First 1
if (-not $asset) { Fail "no Windows asset in release $($release.ResolvedRelease)" }

Write-Host "Installing $ProgName $($release.ResolvedRelease) (windows/x64)..."

$tmp = Join-Path $env:TEMP ("hmt-install-" + [System.Guid]::NewGuid().ToString('N'))
New-Item -ItemType Directory -Path $tmp -Force | Out-Null
try {
  $zip = Join-Path $tmp 'helpmetest.zip'
  Invoke-WebRequest -Uri $asset.URL -OutFile $zip -UseBasicParsing
  Expand-Archive -Path $zip -DestinationPath $tmp -Force

  $exe = Get-ChildItem -Path $tmp -Recurse -Filter 'helpmetest.exe' | Select-Object -First 1
  if (-not $exe) { Fail "helpmetest.exe not found in downloaded archive" }

  $installDir = Join-Path $env:LOCALAPPDATA 'Programs\helpmetest'
  New-Item -ItemType Directory -Path $installDir -Force | Out-Null
  $dest = Join-Path $installDir 'helpmetest.exe'
  Copy-Item -Path $exe.FullName -Destination $dest -Force

  # Add install dir to the user PATH (persisted), and to this session.
  $userPath = [Environment]::GetEnvironmentVariable('Path', 'User')
  if (-not $userPath) { $userPath = '' }
  $onPath = $userPath.Split(';') | Where-Object { $_ -eq $installDir }
  if (-not $onPath) {
    $newPath = if ($userPath.TrimEnd(';')) { $userPath.TrimEnd(';') + ';' + $installDir } else { $installDir }
    [Environment]::SetEnvironmentVariable('Path', $newPath, 'User')
    Write-Host "Added $installDir to your PATH."
  }
  if (-not ($env:Path.Split(';') | Where-Object { $_ -eq $installDir })) {
    $env:Path = $env:Path.TrimEnd(';') + ';' + $installDir
  }

  Write-Host "Installed at $dest" -ForegroundColor Green
  Write-Host ""
  Write-Host "Run 'helpmetest --version' to verify. If not found, open a new terminal."
} finally {
  Remove-Item -Path $tmp -Recurse -Force -ErrorAction SilentlyContinue
}