289 lines
13 KiB
PowerShell
289 lines
13 KiB
PowerShell
# bootstrap_browser_tools.ps1 — install agent-browser + Playwright Chromium
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# into ~/.hermes/node/ for use by Hermes Agent's browser tools on Windows.
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#
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# Targets the registry-install path: users who got Hermes via
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# `uvx --from 'hermes-agent[acp]==X' hermes-acp` don't have a repo clone,
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# so the install.ps1 `npm install`-in-repo flow doesn't apply. This script
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# is a self-contained, idempotent slice of install.ps1's browser block.
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#
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# Usage:
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# .\bootstrap_browser_tools.ps1 # use defaults
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# .\bootstrap_browser_tools.ps1 -Yes # accept Chromium download
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# .\bootstrap_browser_tools.ps1 -SkipChromium # Node + agent-browser only
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#
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# Idempotent: re-running this is safe and fast.
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[CmdletBinding()]
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param(
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[switch]$Yes,
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[switch]$SkipChromium
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)
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$ErrorActionPreference = "Stop"
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$NodeVersion = "22"
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# ─────────────────────────────────────────────────────────────────────────
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# Logging
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# ─────────────────────────────────────────────────────────────────────────
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function Write-Info { param([string]$msg) Write-Host "[*] $msg" -ForegroundColor Cyan }
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function Write-Success { param([string]$msg) Write-Host "[+] $msg" -ForegroundColor Green }
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function Write-Warn { param([string]$msg) Write-Host "[!] $msg" -ForegroundColor Yellow }
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function Write-Err { param([string]$msg) Write-Host "[x] $msg" -ForegroundColor Red }
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# ─────────────────────────────────────────────────────────────────────────
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# Paths
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# ─────────────────────────────────────────────────────────────────────────
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$HermesHome = $env:HERMES_HOME
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if (-not $HermesHome) {
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$HermesHome = Join-Path $env:USERPROFILE ".hermes"
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}
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$NodePrefix = Join-Path $HermesHome "node"
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# ─────────────────────────────────────────────────────────────────────────
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# Step 1: Node.js
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# ─────────────────────────────────────────────────────────────────────────
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function Resolve-NpmExe {
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# Same gotcha as install.ps1: prefer npm.cmd over npm.ps1 so the
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# PowerShell execution policy doesn't block us.
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$cmd = Get-Command npm -ErrorAction SilentlyContinue
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if (-not $cmd) { return $null }
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$npmExe = $cmd.Source
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if ($npmExe -like "*.ps1") {
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$sibling = Join-Path (Split-Path $npmExe -Parent) "npm.cmd"
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if (Test-Path $sibling) { return $sibling }
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}
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return $npmExe
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}
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function Resolve-NpxExe {
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$cmd = Get-Command npx -ErrorAction SilentlyContinue
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if (-not $cmd) { return $null }
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$npxExe = $cmd.Source
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if ($npxExe -like "*.ps1") {
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$sibling = Join-Path (Split-Path $npxExe -Parent) "npx.cmd"
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if (Test-Path $sibling) { return $sibling }
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}
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return $npxExe
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}
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function Ensure-Node {
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# System Node on PATH?
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$sysNode = Get-Command node -ErrorAction SilentlyContinue
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if ($sysNode) {
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try {
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$v = & $sysNode.Source --version
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$major = [int]($v -replace '^v(\d+).*', '$1')
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if ($major -ge 20) {
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Write-Success "Node.js $v found on PATH"
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return
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}
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Write-Warn "Node.js $v is older than v20 — installing managed Node."
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} catch {
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Write-Warn "Failed to query Node version: $_"
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}
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}
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# Hermes-managed Node?
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$managedNode = Join-Path $NodePrefix "node.exe"
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if (Test-Path $managedNode) {
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$v = & $managedNode --version
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Write-Success "Node.js $v found (Hermes-managed at $NodePrefix)"
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# Prepend to current-process PATH so subsequent npm/npx calls find it.
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$env:PATH = "$NodePrefix;$env:PATH"
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return
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}
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Write-Info "Installing Node.js $NodeVersion LTS into $NodePrefix ..."
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$arch = if ([Environment]::Is64BitOperatingSystem) { "x64" } else { "x86" }
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$indexUrl = "https://nodejs.org/dist/latest-v${NodeVersion}.x/"
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try {
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$indexPage = Invoke-WebRequest -Uri $indexUrl -UseBasicParsing
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$matches = [regex]::Matches($indexPage.Content, "node-v${NodeVersion}\.\d+\.\d+-win-${arch}\.zip")
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if ($matches.Count -eq 0) {
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Write-Err "Could not locate Node.js $NodeVersion zip for win-$arch"
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throw "no tarball"
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}
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$zipName = $matches[0].Value
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$zipUrl = "$indexUrl$zipName"
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$tmpDir = Join-Path $env:TEMP "hermes-node-$([guid]::NewGuid().ToString('N'))"
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New-Item -ItemType Directory -Force -Path $tmpDir | Out-Null
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$zipPath = Join-Path $tmpDir $zipName
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Write-Info "Downloading $zipName ..."
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Invoke-WebRequest -Uri $zipUrl -OutFile $zipPath -UseBasicParsing
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Expand-Archive -Path $zipPath -DestinationPath $tmpDir -Force
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$extracted = Get-ChildItem -Path $tmpDir -Directory | Where-Object { $_.Name -like "node-v*" } | Select-Object -First 1
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if (-not $extracted) { Write-Err "Node.js extraction failed"; throw "extract" }
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if (Test-Path $NodePrefix) { Remove-Item -Recurse -Force $NodePrefix }
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New-Item -ItemType Directory -Force -Path $HermesHome | Out-Null
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Move-Item -Path $extracted.FullName -Destination $NodePrefix
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Remove-Item -Recurse -Force $tmpDir -ErrorAction SilentlyContinue
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$env:PATH = "$NodePrefix;$env:PATH"
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$v = & "$NodePrefix\node.exe" --version
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Write-Success "Node.js $v installed to $NodePrefix"
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} catch {
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Write-Err "Node.js install failed: $_"
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Write-Info "Install Node 20+ manually from https://nodejs.org/en/download/ and re-run."
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throw
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}
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}
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# ─────────────────────────────────────────────────────────────────────────
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# Step 2: agent-browser
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# ─────────────────────────────────────────────────────────────────────────
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function Ensure-AgentBrowser {
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$npmExe = Resolve-NpmExe
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if (-not $npmExe) {
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Write-Err "npm not on PATH after Node install — aborting"
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throw "npm missing"
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}
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# Already installed?
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$existing = Get-Command agent-browser -ErrorAction SilentlyContinue
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if ($existing) {
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Write-Success "agent-browser already installed at $($existing.Source)"
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return
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}
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# When the user has system Node (winget / installer-based), `npm install
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# -g` writes to a directory that may require admin rights. Force the
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# prefix to the user-writable Hermes-managed Node directory so we never
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# need elevation and the agent can always find the result. Mirrors the
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# bash bootstrap's `--prefix $NODE_PREFIX` strategy.
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New-Item -ItemType Directory -Force -Path $NodePrefix | Out-Null
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Write-Info "Installing agent-browser (npm, prefix=$NodePrefix)..."
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& $npmExe install -g --prefix $NodePrefix --silent `
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"agent-browser@^0.26.0" "@askjo/camofox-browser@^1.5.2"
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if ($LASTEXITCODE -ne 0) {
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Write-Err "npm install -g agent-browser failed (exit $LASTEXITCODE)"
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throw "npm install"
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}
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# Windows npm global installs drop shims at $NodePrefix\ root (not bin/).
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# Prepend to PATH so any subsequent npx call resolves them.
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$env:PATH = "$NodePrefix;$env:PATH"
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Write-Success "agent-browser installed to $NodePrefix"
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}
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# ─────────────────────────────────────────────────────────────────────────
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# Step 3: Playwright Chromium
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# ─────────────────────────────────────────────────────────────────────────
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function Find-SystemBrowser {
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$candidates = @(
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"C:\Program Files\Google\Chrome\Application\chrome.exe",
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"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe",
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"C:\Program Files\Chromium\Application\chromium.exe",
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"${env:LOCALAPPDATA}\Google\Chrome\Application\chrome.exe",
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"${env:LOCALAPPDATA}\Chromium\Application\chromium.exe"
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)
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foreach ($p in $candidates) {
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if (Test-Path $p) { return $p }
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}
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# Edge — Chromium-based, agent-browser can use it
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foreach ($p in @(
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"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe",
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"C:\Program Files\Microsoft\Edge\Application\msedge.exe"
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)) {
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if (Test-Path $p) { return $p }
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}
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return $null
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}
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function Write-BrowserEnv {
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param([string]$BrowserPath)
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$envFile = Join-Path $HermesHome ".env"
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New-Item -ItemType Directory -Force -Path $HermesHome | Out-Null
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if (Test-Path $envFile) {
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$existing = Get-Content $envFile -Raw -ErrorAction SilentlyContinue
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if ($existing -and ($existing -match "(?m)^AGENT_BROWSER_EXECUTABLE_PATH=")) {
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return
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}
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}
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Add-Content -Path $envFile -Value ""
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Add-Content -Path $envFile -Value "# Hermes Agent browser tools — use the system Chrome/Chromium/Edge binary."
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Add-Content -Path $envFile -Value "AGENT_BROWSER_EXECUTABLE_PATH=$BrowserPath"
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Write-Success "Configured browser tools to use $BrowserPath"
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}
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function Confirm-ChromiumDownload {
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if ($Yes) { return $true }
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if (-not [Environment]::UserInteractive) {
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Write-Warn "Non-interactive shell — skipping Chromium prompt."
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Write-Info "Re-run with -Yes to install Chromium (~400 MB download)."
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return $false
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}
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$reply = Read-Host "Install Playwright Chromium (~400 MB download)? [y/N]"
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return ($reply -match "^(y|yes)$")
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}
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function Ensure-Chromium {
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if ($SkipChromium) {
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Write-Info "Skipping Chromium install (-SkipChromium)"
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return
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}
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# agent-browser on Windows expects a Playwright-managed Chromium under
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# %LOCALAPPDATA%\ms-playwright. The system-browser shortcut from the
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# Linux/macOS path doesn't apply the same way on Windows — Playwright's
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# default launch path won't pick up a stock Chrome install without an
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# explicit AGENT_BROWSER_EXECUTABLE_PATH. We still offer it as a
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# fallback when the user doesn't want the download.
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if (-not (Confirm-ChromiumDownload)) {
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$sys = Find-SystemBrowser
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if ($sys) {
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Write-Info "Using system browser at $sys (Chromium download skipped)."
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Write-BrowserEnv -BrowserPath $sys
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} else {
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Write-Info "Chromium install skipped. Browser tools won't launch until"
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Write-Info "Chromium is installed or AGENT_BROWSER_EXECUTABLE_PATH is set."
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}
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return
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}
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$npxExe = Resolve-NpxExe
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if (-not $npxExe) {
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Write-Err "npx not on PATH — cannot install Playwright Chromium"
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throw "npx missing"
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}
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Write-Info "Installing Playwright Chromium (~400 MB) ..."
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& $npxExe --yes playwright install chromium
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if ($LASTEXITCODE -ne 0) {
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Write-Err "Playwright Chromium install failed (exit $LASTEXITCODE)"
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Write-Info "Try again later: npx --yes playwright install chromium"
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throw "playwright"
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}
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Write-Success "Playwright Chromium installed"
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}
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# ─────────────────────────────────────────────────────────────────────────
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# Main
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# ─────────────────────────────────────────────────────────────────────────
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Write-Info "Hermes Agent: bootstrapping browser tools"
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Write-Info " HERMES_HOME = $HermesHome"
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Write-Info " OS = Windows"
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Ensure-Node
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Ensure-AgentBrowser
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Ensure-Chromium
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Write-Success "Browser tools setup complete."
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Write-Info "Hermes Agent will pick up agent-browser from $NodePrefix on next launch."
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