# CodeGraph standalone installer for Windows (PowerShell).
#
# Downloads a self-contained bundle (a vendored Node runtime + the app) from
# GitHub Releases. No Node.js, no build tools required.
#
# irm https://raw.githubusercontent.com/colbymchenry/codegraph/main/install.ps1 | iex
#
# Re-run to upgrade. To uninstall: remove $env:LOCALAPPDATA\codegraph and drop
# its \current\bin entry from your user PATH.
#
# Environment:
# CODEGRAPH_VERSION release tag to install (default: latest)
# CODEGRAPH_INSTALL_DIR install location (default: %LOCALAPPDATA%\codegraph)

$ErrorActionPreference='Stop'
$repo='colbymchenry/codegraph'
$installDir=if($env:CODEGRAPH_INSTALL_DIR){$env:CODEGRAPH_INSTALL_DIR}else{Join-Path$env:LOCALAPPDATA'codegraph'}

# 1. Detect architecture -> target matching the release archives.
$arch=if([System.Runtime.InteropServices.RuntimeInformation]::OSArchitecture-eq'Arm64'){'arm64'}else{'x64'}
$target="win32-$arch"

# 2. Resolve the version (latest release unless pinned).
$version=$env:CODEGRAPH_VERSION
if(-not$version){
$version=(Invoke-RestMethod"https://api.github.com/repos/$repo/releases/latest").tag_name
}
if(-not$version){throw"codegraph: could not resolve latest version; set CODEGRAPH_VERSION."}

# 3. Download + extract the bundle into a stable 'current' dir (overwritten on upgrade).
$url="https://github.com/$repo/releases/download/$version/codegraph-$target.zip"
Write-Host"Installing CodeGraph $version ($target)..."
$tmp=Join-Path$env:TEMP("cg-"+[guid]::NewGuid().ToString())
New-Item-ItemTypeDirectory-Force-Path$tmp|Out-Null
$zip=Join-Path$tmp'cg.zip'
Invoke-WebRequest-Uri$url-OutFile$zip

$dest=Join-Path$installDir'current'
if(Test-Path$dest){Remove-Item-Recurse-Force$dest}
New-Item-ItemTypeDirectory-Force-Path$dest|Out-Null
Expand-Archive-Path$zip-DestinationPath$dest-Force
# Archives contain a top-level codegraph-<target>\ dir; flatten it.
$inner=Join-Path$dest"codegraph-$target"
if(Test-Path$inner){
Get-ChildItem-Force$inner|Move-Item-Destination$dest-Force
Remove-Item-Recurse-Force$inner
}
Remove-Item-Recurse-Force$tmp

# 4. Put the launcher dir on the user's PATH.
$binDir=Join-Path$dest'bin'
$userPath=[Environment]::GetEnvironmentVariable('Path','User')
if(($userPath-split';')-notcontains$binDir){
[Environment]::SetEnvironmentVariable('Path',"$binDir;$userPath",'User')
Write-Host"Added $binDir to your PATH (restart your terminal to pick it up)."
}

Write-Host"Installed to $dest"
Write-Host"Run: codegraph --help"