# HelixPing agent-side installer for a new VM.
#
# One-liner (paste into PowerShell on the new VM):
#   irm https://ping.helixai.ca/install.ps1 | iex
#
# What it does:
#   1. Creates %USERPROFILE%\.helixping
#   2. Downloads listen.js (the wake-up listener), stop-hook.js (Claude Code
#      Stop hook) and install-hook.js (settings merger) from the server
#   3. Merges the Stop hook into ~/.claude/settings.json (preserves existing
#      settings and hooks; idempotent — safe to re-run any time)
#
# Nothing else runs on the VM: the HelixPing server lives only on VM-NODE-AI-S1.
# Requires: Node.js 18+ (all helix VMs have it) and outbound HTTPS.

$ErrorActionPreference = 'Stop'
$server = 'https://ping.helixai.ca'
$dir = Join-Path $env:USERPROFILE '.helixping'

Write-Host ''
Write-Host '=== HelixPing VM setup ===' -ForegroundColor Cyan

# PowerShell 5.1 defaults to TLS 1.0 — force 1.2 for the downloads.
[Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12

$node = Get-Command node -ErrorAction SilentlyContinue
if (-not $node) {
    Write-Host 'ERROR: Node.js was not found on PATH. Install Node 18+ first, then re-run.' -ForegroundColor Red
    return
}

New-Item -ItemType Directory -Force $dir | Out-Null
Write-Host "Downloading client scripts to $dir ..."
Invoke-WebRequest "$server/client/listen.js"       -OutFile (Join-Path $dir 'listen.js')       -UseBasicParsing
Invoke-WebRequest "$server/client/stop-hook.js"    -OutFile (Join-Path $dir 'stop-hook.js')    -UseBasicParsing
Invoke-WebRequest "$server/client/install-hook.js" -OutFile (Join-Path $dir 'install-hook.js') -UseBasicParsing

Write-Host 'Installing the Claude Code Stop hook ...'
node (Join-Path $dir 'install-hook.js')
if ($LASTEXITCODE -ne 0) {
    Write-Host 'Hook installation failed — see the message above.' -ForegroundColor Red
    return
}

Write-Host ''
Write-Host 'Done. This VM is HelixPing-ready:' -ForegroundColor Green
Write-Host '  - Agents woken here will find listen.js at ~/.helixping (prompt blocks'
Write-Host '    also self-download it to TEMP, so nothing depends on this copy).'
Write-Host '  - The Stop hook keeps agents from going idle with a dead listener.'
Write-Host '    Already-open Claude sessions: type /hooks once (or restart) to load it.'
Write-Host ''
Write-Host "Connect an agent: create a channel at $server (app) and paste the prompt"
Write-Host 'block into its terminal - or tell the agent to POST /channel itself.'
Write-Host "Full guide: $server/guide"