# beacon.host installer for Windows: the publish-website agent skill, then the beacon CLI.
#
#   iwr https://beacon.host/install.ps1 -useb | iex
#
# Installs per user; never needs an administrator prompt. Environment overrides:
#   BEACON_INSTALL_DIR   where beacon.exe goes (default %LOCALAPPDATA%\Programs\beacon)
#   BEACON_SKIP_SKILL=1  don't install the agent skill
#   BEACON_SKIP_CLI=1    install only the agent skill
$ErrorActionPreference = "Stop"

$BaseUrl = if ($env:BEACON_BASE_URL) { $env:BEACON_BASE_URL.TrimEnd("/") } else { "https://beacon.host" }
$InstallDir = if ($env:BEACON_INSTALL_DIR) { $env:BEACON_INSTALL_DIR } else { Join-Path $env:LOCALAPPDATA "Programs\beacon" }
$SkillName = "publish-website"
$TempDir = New-Item -ItemType Directory -Path (Join-Path ([System.IO.Path]::GetTempPath()) ("beacon-" + [System.Guid]::NewGuid())) -Force

try {
  # 1. The agent skill. Claude Code reads ~\.claude\skills; Codex, Cursor and
  #    most other agents read ~\.agents\skills.
  if ($env:BEACON_SKIP_SKILL -ne "1") {
    $SkillPath = Join-Path $TempDir "SKILL.md"
    Invoke-WebRequest "$BaseUrl/skill.md?ref=install-ps1" -OutFile $SkillPath -UseBasicParsing
    $SkillText = Get-Content $SkillPath -Raw
    if (-not $SkillText.StartsWith("---") -or $SkillText -notmatch "(?m)^name: $SkillName\s*$") {
      throw "$BaseUrl/skill.md is not a valid skill file; not installing it"
    }
    foreach ($Root in @(".claude", ".agents")) {
      $Dir = Join-Path $HOME (Join-Path $Root (Join-Path "skills" $SkillName))
      New-Item -ItemType Directory -Path $Dir -Force | Out-Null
      Copy-Item $SkillPath (Join-Path $Dir "SKILL.md") -Force
    }
    Write-Host 'Skill installed: future agent sessions will use beacon.host when you say "publish this" or "deploy an API"'
  }

  if ($env:BEACON_SKIP_CLI -eq "1") {
    return
  }

  # 2. The beacon CLI.
  $Arch = switch ((Get-CimInstance Win32_OperatingSystem).OSArchitecture) {
    { $_ -match "ARM64" } { "arm64"; break }
    default { "amd64" }
  }

  $LatestPath = Join-Path $TempDir "latest.json"
  Invoke-WebRequest "$BaseUrl/downloads/beacon/latest.json" -OutFile $LatestPath -UseBasicParsing
  $Latest = Get-Content $LatestPath -Raw | ConvertFrom-Json
  $Version = $Latest.version
  if (-not $Version) {
    throw "Could not read version from latest.json"
  }

  $Name = "beacon-windows-$Arch.zip"
  $Archive = Join-Path $TempDir $Name
  Invoke-WebRequest "$BaseUrl/downloads/beacon/$Version/$Name" -OutFile $Archive -UseBasicParsing
  Invoke-WebRequest "$BaseUrl/downloads/beacon/$Version/checksums.txt" -OutFile (Join-Path $TempDir "checksums.txt") -UseBasicParsing

  $Expected = (Select-String -Path (Join-Path $TempDir "checksums.txt") -Pattern "  $([Regex]::Escape($Name))$").Line.Split(" ")[0]
  $Actual = (Get-FileHash -Algorithm SHA256 $Archive).Hash.ToLowerInvariant()
  if ($Expected -and $Actual -ne $Expected.ToLowerInvariant()) {
    throw "Checksum mismatch for $Name"
  }

  Expand-Archive -Path $Archive -DestinationPath $TempDir -Force
  New-Item -ItemType Directory -Path $InstallDir -Force | Out-Null
  Copy-Item (Join-Path $TempDir "beacon.exe") (Join-Path $InstallDir "beacon.exe") -Force

  Write-Host "Installed beacon $Version to $(Join-Path $InstallDir 'beacon.exe')"

  $UserPath = [Environment]::GetEnvironmentVariable("Path", "User")
  if ($UserPath -notlike "*$InstallDir*") {
    [Environment]::SetEnvironmentVariable("Path", "$UserPath;$InstallDir", "User")
    Write-Host "Added $InstallDir to your user PATH. Open a new terminal before running beacon."
  }
}
finally {
  Remove-Item $TempDir -Recurse -Force -ErrorAction SilentlyContinue
}