#!/bin/bash
# Диагностика HTTP 502 (Caddy не достучался до Node / БД)
set -e

source "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/shop-root.sh" 2>/dev/null || SHOP_ROOT=/opt/shop

echo "=== Shop / Caddy 502 diagnostic ($SHOP_ROOT) ==="
echo

echo "1. PostgreSQL"
if command -v pg_isready >/dev/null; then
  pg_isready -h 127.0.0.1 -p 5432 && echo "  pg_isready: OK" || echo "  pg_isready: FAIL"
else
  echo "  pg_isready не найден"
fi
echo

echo "2. Служба shop"
systemctl is-active shop 2>/dev/null || echo "  shop: не active"
systemctl status shop --no-pager -l 2>/dev/null | head -15 || true
echo

echo "3. Служба caddy"
systemctl is-active caddy 2>/dev/null || true
echo

echo "4. Порт 3000"
if command -v ss >/dev/null; then
  ss -tlnp | grep ':3000' || echo "  Ничего не слушает порт 3000"
else
  netstat -tlnp 2>/dev/null | grep ':3000' || true
fi
echo

echo "5. curl backend"
if curl -sf --max-time 3 http://127.0.0.1:3000/health; then
  echo
  echo "  OK"
else
  echo "  FAIL — проверьте DATABASE_URL и journalctl -u shop"
fi
echo

echo "6. .env"
if [ -f "$SHOP_ROOT/.env" ]; then
  grep -E '^(DATABASE_URL|HOST|PORT)=' "$SHOP_ROOT/.env" 2>/dev/null | sed 's/=.*/=***/' || true
  grep -E '^DATABASE_URL=' "$SHOP_ROOT/.env" || echo "  DATABASE_URL не задан"
else
  echo "  $SHOP_ROOT/.env не найден"
fi
echo

echo "7. Node"
which node && node -v