# raea's installer for Windows, in PowerShell: irm https://raea.io/install.ps1 | iex
#
# Puts the raea engine (the `raea` CLI that renders, plays and checks compositions written in React and
# TypeScript) under ~\.raea, adds its bin folder to your PATH, and adds raea's agent skills to ~\.claude\skills so a
# coding agent (Claude Code, or anything that reads that folder) knows how to write and render with it. Run it again
# to update. Windows 10 or 11 on x86_64. raea needs the Microsoft Visual C++ Redistributable (x64), which most
# machines already have; this script says so when it's missing.
#
# $env:RAEA_VERSION = "0.1.0-canary.2" picks a release (the latest by default); RAEA_PREFIX moves ~\.raea;
# RAEA_NO_SKILLS=1 leaves the skills out; RAEA_DOWNLOAD serves the releases from somewhere else (a mirror, or a local
# folder to test).
$ErrorActionPreference = "Stop"
$ProgressPreference = "SilentlyContinue"
function Say($m) { Write-Host "raea: $m" }
# throw, not exit: under `irm | iex` an exit would close the terminal it runs in
function Fail($m) { throw "raea: $m" }
# a URL, or a local folder (RAEA_DOWNLOAD pointed at one, to test a zip before it is published)
function Fetch($from, $to) { if ($from -match "^https?:") { Invoke-WebRequest $from -OutFile $to -UseBasicParsing } else { Copy-Item $from $to } }

$repo = "shinyobjectz/raea"
$prefix = if ($env:RAEA_PREFIX) { $env:RAEA_PREFIX } else { Join-Path $HOME ".raea" }
if ($env:PROCESSOR_ARCHITECTURE -ne "AMD64" -and $env:PROCESSOR_ARCHITEW6432 -ne "AMD64") {
  Fail "raea runs on x86_64 Windows for now (this is $env:PROCESSOR_ARCHITECTURE)."
}

if ($env:RAEA_VERSION) {
  $tag = "v$($env:RAEA_VERSION)"
} else {
  $tag = (Invoke-RestMethod "https://api.github.com/repos/$repo/releases?per_page=1")[0].tag_name
  if (-not $tag) { Fail "couldn't find a release of $repo." }
}
$version = $tag.TrimStart("v")
$asset = "raea-$version-windows-x86_64.zip"
$base = if ($env:RAEA_DOWNLOAD) { $env:RAEA_DOWNLOAD } else { "https://github.com/$repo/releases/download" }
$url = "$base/$tag/$asset"

$tmp = Join-Path ([IO.Path]::GetTempPath()) ("raea-" + [Guid]::NewGuid())
New-Item -ItemType Directory -Path $tmp | Out-Null
try {
  Say "downloading raea $version"
  try { Fetch $url (Join-Path $tmp $asset) } catch { Fail "couldn't download $url (has $tag a Windows build?)" }
  try { Fetch "$url.sha256" (Join-Path $tmp "$asset.sha256") } catch { Fail "couldn't download the checksum" }
  $want = ((Get-Content (Join-Path $tmp "$asset.sha256") -Raw).Trim() -split '\s+')[0].ToLower()
  $got = (Get-FileHash (Join-Path $tmp $asset) -Algorithm SHA256).Hash.ToLower()
  if ($want -ne $got) { Fail "the download's checksum doesn't match." }
  Expand-Archive (Join-Path $tmp $asset) -DestinationPath $tmp -Force

  # replace the old install whole (a release's files go together)
  New-Item -ItemType Directory -Force -Path $prefix | Out-Null
  foreach ($d in "bin", "share") { $p = Join-Path $prefix $d; if (Test-Path $p) { Remove-Item $p -Recurse -Force } }
  Move-Item (Join-Path $tmp "raea\bin") $prefix
  Move-Item (Join-Path $tmp "raea\share") $prefix
  Copy-Item (Join-Path $tmp "raea\README.txt") $prefix -Force
} finally {
  Remove-Item $tmp -Recurse -Force -ErrorAction SilentlyContinue
}
$bin = Join-Path $prefix "bin"
$user = [Environment]::GetEnvironmentVariable("Path", "User")
if (-not (($user -split ";") -contains $bin)) {
  [Environment]::SetEnvironmentVariable("Path", (@($bin) + ($user -split ";" | Where-Object { $_ })) -join ";", "User")
  $added = $true
}
$env:Path = "$bin;$env:Path"
Say "installed raea $version in $prefix"

# the C runtime's DLLs come from the VC++ redistributable (they're Microsoft's to ship, not ours)
$sys = Join-Path $env:SystemRoot "System32"
$crt = "vcruntime140.dll", "vcruntime140_1.dll", "msvcp140.dll" | Where-Object { -not (Test-Path (Join-Path $sys $_)) }
if ($crt) {
  Say "raea needs the Microsoft Visual C++ Redistributable (x64), which isn't installed ($($crt -join ', ') missing). Get it from"
  Say "  https://aka.ms/vs/17/release/vc_redist.x64.exe   (or: winget install Microsoft.VCRedist.2015+.x64)"
}

if (-not $env:RAEA_NO_SKILLS) {
  $skills = Join-Path $HOME ".claude\skills"
  New-Item -ItemType Directory -Force -Path $skills | Out-Null
  foreach ($s in Get-ChildItem (Join-Path $prefix "share\raea\skills") -Directory) {
    $to = Join-Path $skills $s.Name
    if (Test-Path $to) { Remove-Item $to -Recurse -Force }
    Copy-Item $s.FullName $to -Recurse
  }
  Say "added the raea and raea-bevy skills to $skills"
}
if ($added) { Say "added $bin to your PATH: open a new terminal to pick it up" }
Say "try it:  raea render your-composition.tsx -o out.mp4"
Say "agents: ask your coding agent to make something with raea; the skill tells it how."