#!/bin/bash
# Установка systemd-службы shop (после git clone и .env)
# sudo bash scripts/install-shop-service.sh
set -euo pipefail

if [ "$(id -u)" -ne 0 ]; then
  echo "Запустите от root: sudo bash scripts/install-shop-service.sh"
  exit 1
fi

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "$SCRIPT_DIR/shop-root.sh"

echo "=== Установка службы shop ==="
echo "Каталог: $SHOP_ROOT"

if [ ! -f "$SHOP_ROOT/package.json" ]; then
  echo "Ошибка: нет package.json в $SHOP_ROOT"
  exit 1
fi

# .env в родительском каталоге (если переносили клон)
PARENT_ENV="$(dirname "$SHOP_ROOT")/.env"
if [ ! -f "$SHOP_ROOT/.env" ] && [ -f "$PARENT_ENV" ]; then
  cp "$PARENT_ENV" "$SHOP_ROOT/.env"
  echo "Скопирован .env из $(dirname "$SHOP_ROOT")"
fi

if [ ! -f "$SHOP_ROOT/.env" ]; then
  if [ -f "$SHOP_ROOT/.env.example" ]; then
    cp "$SHOP_ROOT/.env.example" "$SHOP_ROOT/.env"
    if command -v openssl >/dev/null; then
      sed -i "s/change-me-to-a-long-random-string/$(openssl rand -hex 32)/" "$SHOP_ROOT/.env"
    fi
    echo "Создан .env — проверьте DATABASE_URL"
  else
    echo "Ошибка: нет .env"
    exit 1
  fi
fi

if ! grep -q '^DATABASE_URL=' "$SHOP_ROOT/.env"; then
  echo "Добавляю DATABASE_URL по умолчанию..."
  echo 'DATABASE_URL=postgresql://shop:shop@127.0.0.1:5432/shop' >> "$SHOP_ROOT/.env"
fi

NODE_BIN=$(command -v node)
echo "Node: $NODE_BIN ($($NODE_BIN -v))"

chmod +x "$SHOP_ROOT/scripts/wait-postgres.sh" 2>/dev/null || true

if command -v pg_isready >/dev/null; then
  bash "$SCRIPT_DIR/install-postgresql-ubuntu.sh" 2>/dev/null || true
  systemctl enable postgresql 2>/dev/null || true
  systemctl start postgresql 2>/dev/null || true
  bash "$SCRIPT_DIR/setup-postgres-ubuntu.sh" 2>/dev/null || true
fi

npm install --omit=dev --prefix "$SHOP_ROOT"

bash "$SCRIPT_DIR/fix-shop-permissions.sh"

cp -f "$SHOP_ROOT/deploy/shop.service" /etc/systemd/system/shop.service
sed -i "s|WorkingDirectory=.*|WorkingDirectory=${SHOP_ROOT}|" /etc/systemd/system/shop.service
sed -i "s|EnvironmentFile=.*|EnvironmentFile=${SHOP_ROOT}/.env|" /etc/systemd/system/shop.service
sed -i "s|ExecStartPre=.*|ExecStartPre=+/bin/bash ${SHOP_ROOT}/scripts/wait-postgres.sh|" /etc/systemd/system/shop.service
sed -i "s|ExecStart=.*|ExecStart=${NODE_BIN} src/server.js|" /etc/systemd/system/shop.service

if ! sudo -u www-data test -r "$SHOP_ROOT/package.json"; then
  echo "Ошибка: www-data не читает $SHOP_ROOT"
  ls -la "$SHOP_ROOT" | head -5
  exit 1
fi

systemctl daemon-reload
systemctl enable shop

systemctl stop shop 2>/dev/null || true
bash "$SCRIPT_DIR/free-port-3000.sh" 3000

echo "Запуск shop..."
if ! systemctl restart shop; then
  echo ""
  echo "=== Ошибка запуска — лог ==="
  journalctl -u shop -n 40 --no-pager
  echo ""
  bash "$SCRIPT_DIR/diagnose-shop-service.sh" || true
  exit 1
fi

sleep 3

if ! systemctl is-active --quiet shop; then
  echo "shop.service не в состоянии active"
  journalctl -u shop -n 40 --no-pager
  exit 1
fi

if curl -sf http://127.0.0.1:3000/health; then
  echo ""
  echo "OK — служба shop запущена (systemd active)"
  systemctl status shop --no-pager | head -15
  systemctl reload caddy 2>/dev/null || true
else
  echo "health не отвечает"
  journalctl -u shop -n 40 --no-pager
  exit 1
fi