#!/usr/bin/env bash
# Restart the investor-flow dev servers (frontend :3000 + backend :3001).
#
# WHY THIS SCRIPT EXISTS:
# Next/Turbopack spawns a Node worker pool to process CSS (PostCSS/Tailwind).
# It locates Node via the NODE environment variable. If NODE is unset/empty
# (e.g. a bare `nohup next dev &`), the worker spawn fails with
# "spawning node pooled process -> No such file or directory" and the app 500s.
# So we always export NODE to the real homebrew node binary below.
#
# Usage (from anywhere):
#   bash /Users/laptran/Documents/investor-flow/restart-servers.sh
#   # or, from the repo root:
#   ./restart-servers.sh

set -u

# Prefer PATH node; fall back to common install locations.
NODE_BIN="$(command -v node 2>/dev/null || true)"
if [ -z "${NODE_BIN}" ] || [ ! -x "${NODE_BIN}" ]; then
  for candidate in \
    /Users/laptran/.local/bin/node \
    /opt/homebrew/bin/node \
    /usr/local/bin/node
  do
    if [ -x "$candidate" ]; then NODE_BIN="$candidate"; break; fi
  done
fi
if [ -z "${NODE_BIN}" ] || [ ! -x "${NODE_BIN}" ]; then
  echo "ERROR: could not find a node binary on PATH or known locations." >&2
  exit 1
fi

ROOT="/Users/laptran/Documents/investor-flow"
SRV="$ROOT/app/server"
APP="$ROOT/app"
BK_LOG="/tmp/iflow-backend.log"
NX_LOG="/tmp/iflow-next.log"

# --- stop existing servers (by listen port, not pkill -f self-match) --------
for p in 3000 3001; do
  pids=$(lsof -tiTCP:$p -sTCP:LISTEN 2>/dev/null || true)
  if [ -n "${pids:-}" ]; then kill $pids 2>/dev/null || true; fi
done
# Kill orphaned --watch parent processes: they survive the listener kill and
# respawn children that then fight over the ports with the fresh instances.
# Target only our own server commands (never pkill -f self-match).
pkill -f "--watch --experimental-strip-types src/index.ts" 2>/dev/null || true
pkill -f "next dev --port 3000" 2>/dev/null || true
pkill -f "node_modules/.bin/next-server" 2>/dev/null || true
sleep 2

NODE_DIR="$(dirname "$NODE_BIN")"

# --- backend :3001 (node --watch, re-spawns on file change) -----------------
( cd "$SRV" && \
  nohup env NODE="$NODE_BIN" PATH="$NODE_DIR:$PATH" \
    "$NODE_BIN" --watch --experimental-strip-types src/index.ts \
    > "$BK_LOG" 2>&1 </dev/null & )

# --- frontend :3000 (Next dev; NODE must be set for Turbopack) ------------
( cd "$APP" && \
  nohup env HOSTNAME=0.0.0.0 NODE="$NODE_BIN" PATH="$NODE_DIR:$PATH" \
    "$NODE_BIN" node_modules/.bin/next dev --port 3000 \
    > "$NX_LOG" 2>&1 </dev/null & )

echo "Restart signal sent. Waiting for servers to come up..."
sleep 8

echo "--- listening ports ---"
if lsof -iTCP:3000 -iTCP:3001 -sTCP:LISTEN -P 2>/dev/null; then
  echo "OK: both servers up."
else
  echo "WARN: not listening yet. Tail the logs:"
  echo "  backend: tail -f $BK_LOG"
  echo "  frontend: tail -f $NX_LOG"
fi
echo "--- backend health ---"
curl -s -o /dev/null -w "  :3001 -> HTTP %{http_code}\n" http://localhost:3001/health || echo "  :3001 -> down"