# Setup script for dungeonlab-open/dglab-websocket-server on Windows (PowerShell), from https://gitmanual.com/dungeonlab-open/dglab-websocket-server
# Read it before you run it: the commands come from the repo's own README and files.
# Run: powershell -ExecutionPolicy Bypass -File .\setup.ps1
$ErrorActionPreference = "Stop"
function Write-Step($t) { Write-Host "`n==> $t" -ForegroundColor Cyan }
# Windows ships a python that only opens the Microsoft Store; it doesn't count.
function Have($c) { $cmd = Get-Command $c -ErrorAction SilentlyContinue; [bool]$cmd -and $cmd.Source -notlike '*\WindowsApps\*' }
# New installs change PATH; pick it up without opening a new window.
function Update-Path { $env:Path = [Environment]::GetEnvironmentVariable("Path", "Machine") + ";" + [Environment]::GetEnvironmentVariable("Path", "User") }
# Stop when a program fails, like bash's set -e. Dot-sourced, so cd and venv activation carry on to the next step.
function Invoke-Step([scriptblock]$Block) { $global:LASTEXITCODE = 0; . $Block; if ($LASTEXITCODE) { throw "Failed with exit code $LASTEXITCODE" } }

Write-Step '1/4 Clone the repository'
if (-not (Test-Path 'dglab-websocket-server')) { Invoke-Step { git clone https://github.com/dungeonlab-open/dglab-websocket-server.git } }
Set-Location 'dglab-websocket-server'

Write-Step '2/4 Install the required runtimes'
# Node.js LTS (no version pinned), Bun
if (-not (Have 'nvm') -and -not (Have 'node')) { Invoke-Step { winget install CoreyButler.NVMforWindows -e --accept-source-agreements --accept-package-agreements }; Update-Path }
if (Have 'nvm') { Invoke-Step { nvm install lts } } elseif (Have 'node') { Write-Host "nvm not found: using Node $(node -v)" } else { throw 'Needs Node.js: install nvm-windows or Node.js' }
if (Have 'nvm') { Invoke-Step { nvm use lts } } elseif (Have 'node') { Write-Host "nvm not found: using Node $(node -v)" } else { throw 'Needs Node.js: install nvm-windows or Node.js' }
# (needs Git Bash or WSL on Windows) powershell -c "irm bun.sh/install.ps1 | iex"

Write-Step '3/4 Configure environment variables'
if (-not (Test-Path .env)) { Copy-Item .env.example .env }

Write-Step '4/4 Install dependencies'
Invoke-Step { bun install }

Write-Host 'Set up dungeonlab-open/dglab-websocket-server.'
Write-Host 'Manual: https://gitmanual.com/dungeonlab-open/dglab-websocket-server'