Fix all regressions and get everything loading again

inventory-server/src/routes/dashboard.js

@@ -287,6 +287,7 @@ router.get('/inventory/low-stock', async (req, res) => {
 router.get('/vendors/metrics', async (req, res) => {
   const pool = req.app.locals.pool;
   try {
+    console.log('Fetching vendor metrics...');
     const [rows] = await pool.query(`
       SELECT 
         vendor,
@@ -300,18 +301,74 @@ router.get('/vendors/metrics', async (req, res) => {
       FROM vendor_metrics
       ORDER BY on_time_delivery_rate DESC
     `);
-    res.json(rows.map(row => ({
+    console.log('Found vendor metrics:', rows.length, 'rows');
+    console.log('First row sample:', rows[0]);
+    
+    const mappedRows = rows.map(row => ({
       ...row,
       avg_lead_time_days: parseFloat(row.avg_lead_time_days || 0),
       on_time_delivery_rate: parseFloat(row.on_time_delivery_rate || 0),
       order_fill_rate: parseFloat(row.order_fill_rate || 0),
       total_purchase_value: parseFloat(row.total_purchase_value || 0),
       avg_order_value: parseFloat(row.avg_order_value || 0)
-    })));
+    }));
+    console.log('First mapped row sample:', mappedRows[0]);
+    
+    res.json(mappedRows);
   } catch (error) {
     console.error('Error fetching vendor metrics:', error);
     res.status(500).json({ error: 'Failed to fetch vendor metrics' });
   }
 });
 
+// Get trending products
+router.get('/products/trending', async (req, res) => {
+  const pool = req.app.locals.pool;
+  try {
+    // First check if we have any data
+    const [checkData] = await pool.query(`
+      SELECT COUNT(*) as count, 
+             MAX(total_revenue) as max_revenue,
+             MAX(daily_sales_avg) as max_daily_sales,
+             COUNT(DISTINCT product_id) as products_with_metrics
+      FROM product_metrics 
+      WHERE total_revenue > 0 OR daily_sales_avg > 0
+    `);
+    console.log('Product metrics stats:', checkData[0]);
+
+    if (checkData[0].count === 0) {
+      console.log('No products with metrics found');
+      return res.json([]);
+    }
+
+    // Get trending products
+    const [rows] = await pool.query(`
+      SELECT 
+        p.product_id,
+        p.sku,
+        p.title,
+        COALESCE(pm.daily_sales_avg, 0) as daily_sales_avg,
+        COALESCE(pm.weekly_sales_avg, 0) as weekly_sales_avg,
+        CASE 
+          WHEN pm.weekly_sales_avg > 0 AND pm.daily_sales_avg > 0
+          THEN ((pm.daily_sales_avg - pm.weekly_sales_avg) / pm.weekly_sales_avg) * 100
+          ELSE 0 
+        END as growth_rate,
+        COALESCE(pm.total_revenue, 0) as total_revenue
+      FROM products p
+      INNER JOIN product_metrics pm ON p.product_id = pm.product_id
+      WHERE (pm.total_revenue > 0 OR pm.daily_sales_avg > 0)
+        AND p.visible = true
+      ORDER BY growth_rate DESC
+      LIMIT 50
+    `);
+
+    console.log('Trending products:', rows);
+    res.json(rows);
+  } catch (error) {
+    console.error('Error fetching trending products:', error);
+    res.status(500).json({ error: 'Failed to fetch trending products' });
+  }
+});
+
 module.exports = router;