#!/usr/bin/env bash
# stop-stack.sh — ferma i processi avviati da start-stack.sh.
# Legge i PIDs da var/run/asf-stack.pids, oppure cerca per pattern.

set -euo pipefail
ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
PID_FILE="$ROOT_DIR/var/run/asf-stack.pids"

echo "ASF stack STOP   $(date '+%F %T %Z')"
echo

stop_group() {
  local pid="$1" name="$2"
  if ! kill -0 "$pid" 2>/dev/null; then
    echo "  ✗ $name (pid=$pid)  già spento"
    return 0
  fi
  echo -n "  ⏹ $name  pid=$pid  →  "
  kill -TERM "$pid" 2>/dev/null || true
  local w=0
  while [ $w -lt 8 ]; do
    kill -0 "$pid" 2>/dev/null || break
    sleep 1; w=$((w+1))
  done
  if kill -0 "$pid" 2>/dev/null; then
    echo -n "SIGKILL "
    kill -9 "$pid" 2>/dev/null || true
    sleep 1
  fi
  kill -0 "$pid" 2>/dev/null && echo "FAIL (ancora vivo)" || echo "ok"
}

stop_patterns() {
  echo "[fallback] kill via pattern match…"
  for pattern in \
    "uvicorn app.main:app" \
    "next dev" "next-server" \
    "python -m app.worker" "asf-worker.*run_worker"; do
    pids=$(pgrep -af "$pattern" 2>/dev/null | awk '{print $1}' || true)
    [ -z "$pids" ] && continue
    echo "  pattern '$pattern' → pids=$pids"
    for p in $pids; do stop_group "$p" "$pattern"; done
  done
}

if [ -f "$PID_FILE" ]; then
  echo "[from pidfile] $PID_FILE"
  while IFS=' ' read -r name pid rest; do
    [ -z "${name:-}" ] && continue
    [ -z "${pid:-}" ] && continue
    stop_group "$pid" "$name"
  done < "$PID_FILE"
  rm -f "$PID_FILE"
else
  echo "[no pidfile $PID_FILE]"
  stop_patterns
fi

# final sweep
echo
echo "ports still listening:"
ss -ltnp 2>/dev/null | grep -E ":(8000|3000) " || echo "  → nessuna porta 8000 / 3000 usata (ok)."
echo "done."