const express = require('express');
const router = express.Router();
const { getDb } = require('../db');

router.get('/', (req, res) => {
  try {
    const db = getDb();
    const lowStock = db.prepare(`
      SELECT * FROM products
      WHERE low_stock_threshold > 0 AND quantity_on_hand <= low_stock_threshold
      ORDER BY quantity_on_hand ASC
    `).all();
    const recentOrders = db.prepare(`
      SELECT o.*, c.name as customer_name
      FROM orders o
      LEFT JOIN customers c ON c.id = o.customer_id
      ORDER BY o.created_at DESC
      LIMIT 10
    `).all();
    const productCount = db.prepare('SELECT COUNT(*) as count FROM products').get().count;
    const customerCount = db.prepare('SELECT COUNT(*) as count FROM customers').get().count;
    const orderCount = db.prepare('SELECT COUNT(*) as count FROM orders').get().count;
    res.json({
      lowStock,
      recentOrders,
      productCount,
      customerCount,
      orderCount,
    });
  } catch (err) {
    res.status(500).json({ error: err.message });
  }
});

module.exports = router;