#!/usr/bin/env bash
# Clawmates Visualization Layer — installer (idempotent, safe to re-run)
set -euo pipefail
cd "$(dirname "$0")"

say()  { printf '\033[1;38;5;209m›\033[0m %s\n' "$*"; }
ok()   { printf '\033[1;32m✓\033[0m %s\n' "$*"; }
warn() { printf '\033[1;33m!\033[0m %s\n' "$*"; }

echo
say "Clawmates visualization layer — install"
echo

# 1) Node >= 20 -------------------------------------------------------------
if command -v node >/dev/null 2>&1; then
  NODE_MAJOR="$(node -p 'process.versions.node.split(".")[0]')"
  if [ "$NODE_MAJOR" -ge 20 ]; then ok "Node $(node -v)"; else
    warn "Node $(node -v) found but >= 20 is required."
    echo "    Install Node 20 LTS:  https://nodejs.org  or  'sudo apt install nodejs' from NodeSource."
    exit 1
  fi
else
  warn "Node not found. Install Node 20 LTS, then re-run:"
  echo "    curl -fsSL https://deb.nodesource.com/setup_20.x | sudo -E bash - && sudo apt-get install -y nodejs"
  exit 1
fi

# 2) Bridge deps (intentionally none beyond Node built-ins) -----------------
if [ -f realtime/package.json ]; then
  ( cd realtime && npm ci --omit=dev 2>/dev/null || npm install --omit=dev 2>/dev/null || true )
  ok "Bridge ready (dependency-free)"
fi

# 3) Static file server ------------------------------------------------------
if command -v caddy >/dev/null 2>&1; then
  ok "Caddy present — will serve screens/"
elif command -v npx >/dev/null 2>&1; then
  warn "Caddy not found; will fall back to 'npx serve'."
else
  warn "No static server found. Install Caddy:  https://caddyserver.com/docs/install"
fi

# 4) .env --------------------------------------------------------------------
if [ ! -f .env ]; then
  cp .env.example .env
  ok "Wrote .env from .env.example — edit it before running live mode."
else
  ok ".env already exists (left untouched)"
fi

echo
ok  "Install complete."
echo
say "Next — DEMO mode (no backend):"
echo "    (cd realtime && CLAWMATES_MODE=demo node server.mjs)"
echo "    caddy file-server --root ./screens --listen :8080    # or: npx serve ./screens -l 8080"
echo "    open  http://localhost:8080/Clawmates%20World.dc.html?live=http://localhost:8420/live"
echo
say "Next — LIVE mode (wire to cm-api): edit .env, then"
echo "    (cd realtime && CLAWMATES_MODE=live node server.mjs)"
echo
say "See IMPLEMENTATION.md for per-screen wiring, the event taxonomy, Infrastructure (Tailscale/daemon/cloud), and the systemd unit."
echo