# Matrix light-client installer for Windows (C9). ONE copy-paste from the web:
#
#   irm <cloud>/matrix.ps1 | iex; matrix-install -Token XXXX -Cloud <cloud>
#   # (the script DEFINES the matrix-install function — iex loads it, then you
#   #  call it; saved-file usage also works: .\matrix.ps1 -Token ... -Cloud ...)
#
# Mirrors scripts/install.sh: user-level Node >=22.5 (downloaded when missing),
# bundle to ~\.matrix\versions\<ver>, 'current' junction, matrix.cmd launcher on
# the USER PATH, then hands the one-time token to `matrix onboard`.
# NO admin rights, loud failures.
#
# ⚠ 诚实标注: SQLite WAL on NTFS is functionally supported but NOT yet load-
# verified by us on a real Windows machine (master plan §7.2 P2 item) — treat
# the first Windows deployment as a validation run.
function matrix-install {
param(
  [Parameter(Mandatory = $true)][string]$Token,
  [Parameter(Mandatory = $true)][string]$Cloud,
  [switch]$Headless,
  [switch]$Server
)
$ErrorActionPreference = 'Stop'
function Fail($msg) { Write-Error "[matrix-install] $msg"; exit 1 }
function Log($msg) { Write-Host "[matrix-install] $msg" }

$Cloud = $Cloud.TrimEnd('/')
$MatrixHome = Join-Path $env:USERPROFILE '.matrix'
$NodeVersion = if ($env:MATRIX_NODE_VERSION) { $env:MATRIX_NODE_VERSION } else { 'v22.11.0' }

# ---- 1. Node runtime (>=22.5) -----------------------------------------------
function Test-NodeOk($bin) {
  try { & $bin -e 'var v=process.versions.node.split(".").map(Number);process.exit((v[0]>22||(v[0]===22&&v[1]>=5))?0:1)' 2>$null; return $LASTEXITCODE -eq 0 }
  catch { return $false }
}
$Node = $null
$sys = Get-Command node -ErrorAction SilentlyContinue
if ($sys -and (Test-NodeOk $sys.Source)) {
  $Node = $sys.Source
  Log "using system Node: $Node"
} else {
  $plat = if ([Environment]::Is64BitOperatingSystem) { 'win-x64' } else { Fail 'unsupported: 32-bit Windows' }
  if ($env:PROCESSOR_ARCHITECTURE -eq 'ARM64') { $plat = 'win-arm64' }
  $zipName = "node-$NodeVersion-$plat.zip"
  $rt = Join-Path $MatrixHome 'runtime'
  New-Item -ItemType Directory -Force -Path $rt | Out-Null
  $tmp = Join-Path $env:TEMP "matrix-node-$([guid]::NewGuid().ToString('n')).zip"
  Log "system Node missing or < 22.5 — downloading Node $NodeVersion ($plat, user-level)"
  Invoke-WebRequest -Uri "https://nodejs.org/dist/$NodeVersion/$zipName" -OutFile $tmp
  $dest = Join-Path $rt 'node'
  if (Test-Path $dest) { Remove-Item -Recurse -Force $dest }
  Expand-Archive -Path $tmp -DestinationPath $rt -Force
  Rename-Item -Path (Join-Path $rt "node-$NodeVersion-$plat") -NewName 'node'
  Remove-Item $tmp -Force
  $Node = Join-Path $dest 'node.exe'
  if (-not (Test-NodeOk $Node)) { Fail 'downloaded node failed the >=22.5 check' }
  Log "installed Node runtime at $Node"
}

# ---- 2. client bundle ---------------------------------------------------------
Log 'downloading client bundle'
$tmpDir = Join-Path $env:TEMP "matrix-bundle-$([guid]::NewGuid().ToString('n'))"
New-Item -ItemType Directory -Force -Path $tmpDir | Out-Null
Invoke-WebRequest -Uri "$Cloud/client-bundle.tar.gz" -OutFile (Join-Path $tmpDir 'bundle.tar.gz')
$ver = $null
try { $ver = (Invoke-RestMethod -Uri "$Cloud/latest.json").version } catch { }
$x = Join-Path $tmpDir 'x'
New-Item -ItemType Directory -Force -Path $x | Out-Null
tar -xzf (Join-Path $tmpDir 'bundle.tar.gz') -C $x            # bsdtar ships with Windows 10+
if (-not $ver) { try { $ver = (Get-Content (Join-Path $x 'VERSION') -Raw).Trim() } catch { $ver = Get-Date -Format 'yyyyMMddHHmmss' } }
if (-not (Test-Path (Join-Path $x 'services/control-plane/src/server.mjs'))) { Fail 'bad bundle: missing server.mjs' }
$vdir = Join-Path (Join-Path $MatrixHome 'versions') $ver
if (Test-Path $vdir) { Remove-Item -Recurse -Force $vdir }
New-Item -ItemType Directory -Force -Path (Split-Path $vdir) | Out-Null
Move-Item -Path $x -Destination $vdir
Remove-Item -Recurse -Force $tmpDir
$current = Join-Path $MatrixHome 'current'
if (Test-Path $current) { Remove-Item -Force -Recurse $current }
New-Item -ItemType Junction -Path $current -Target $vdir | Out-Null  # junction = no admin needed
Log "installed bundle -> $vdir (current -> $ver)"

# ---- 3. launcher on the user PATH ---------------------------------------------
$bin = Join-Path $MatrixHome 'bin'
New-Item -ItemType Directory -Force -Path $bin | Out-Null
$cmd = Join-Path $bin 'matrix.cmd'
@"
@echo off
set MATRIX_BUNDLE_ROOT=%USERPROFILE%\.matrix\current
"$Node" "%USERPROFILE%\.matrix\current\workers\matrix-worker\src\cli.mjs" %*
"@ | Set-Content -Path $cmd -Encoding ascii
$userPath = [Environment]::GetEnvironmentVariable('Path', 'User')
if ($userPath -notlike "*$bin*") {
  [Environment]::SetEnvironmentVariable('Path', "$bin;$userPath", 'User')
  Log "added $bin to your user PATH (new terminals pick it up)"
}
$env:Path = "$bin;$env:Path"
Log "wrote launcher $cmd"

# ---- 4. onboard ----------------------------------------------------------------
$onboardArgs = @('onboard', '--cloud', $Cloud, '--token', $Token)
if ($Headless) { $onboardArgs += '--headless' }
if ($Server) { $onboardArgs += '--server' }
Log "launching: matrix $($onboardArgs -join ' ')"
& $cmd @onboardArgs
exit $LASTEXITCODE
}

# Saved-file usage (.\matrix.ps1 -Token ... -Cloud ...): forward the args.
# Under `irm | iex` there are no args — the function is simply defined for the
# documented second half of the one-liner.
if ($args.Count -gt 0) { matrix-install @args }