Integrate config tables into existing scripts, add new config tables and settings pages

inventory-server/src/routes/analytics.js

@@ -189,6 +189,21 @@ router.get('/stock', async (req, res) => {
   try {
     const pool = req.app.locals.pool;
     
+    // Get global configuration values
+    const [configs] = await pool.query(`
+      SELECT 
+        st.low_stock_threshold,
+        tc.calculation_period_days as turnover_period
+      FROM stock_thresholds st
+      CROSS JOIN turnover_config tc
+      WHERE st.id = 1 AND tc.id = 1
+    `);
+    
+    const config = configs[0] || {
+      low_stock_threshold: 5,
+      turnover_period: 30
+    };
+    
     // Get turnover by category
     const [turnoverByCategory] = await pool.query(`
       SELECT 
@@ -200,48 +215,84 @@ router.get('/stock', async (req, res) => {
       LEFT JOIN orders o ON p.product_id = o.product_id
       JOIN product_categories pc ON p.product_id = pc.product_id
       JOIN categories c ON pc.category_id = c.id
-      WHERE o.date >= DATE_SUB(CURDATE(), INTERVAL 30 DAY)
+      WHERE o.date >= DATE_SUB(CURDATE(), INTERVAL ? DAY)
       GROUP BY c.name
       HAVING turnoverRate > 0
       ORDER BY turnoverRate DESC
       LIMIT 10
-    `);
+    `, [config.turnover_period]);
 
-    // Get stock levels over time (last 30 days)
+    // Get stock levels over time
     const [stockLevels] = await pool.query(`
       SELECT 
         DATE_FORMAT(o.date, '%Y-%m-%d') as date,
-        SUM(CASE WHEN p.stock_quantity > 5 THEN 1 ELSE 0 END) as inStock,
-        SUM(CASE WHEN p.stock_quantity <= 5 AND p.stock_quantity > 0 THEN 1 ELSE 0 END) as lowStock,
+        SUM(CASE WHEN p.stock_quantity > ? THEN 1 ELSE 0 END) as inStock,
+        SUM(CASE WHEN p.stock_quantity <= ? AND p.stock_quantity > 0 THEN 1 ELSE 0 END) as lowStock,
         SUM(CASE WHEN p.stock_quantity = 0 THEN 1 ELSE 0 END) as outOfStock
       FROM products p
       LEFT JOIN orders o ON p.product_id = o.product_id
-      WHERE o.date >= DATE_SUB(CURDATE(), INTERVAL 30 DAY)
+      WHERE o.date >= DATE_SUB(CURDATE(), INTERVAL ? DAY)
       GROUP BY DATE_FORMAT(o.date, '%Y-%m-%d')
       ORDER BY date
-    `);
+    `, [
+      config.low_stock_threshold,
+      config.low_stock_threshold,
+      config.turnover_period
+    ]);
 
     // Get critical stock items
     const [criticalItems] = await pool.query(`
+      WITH product_thresholds AS (
+        SELECT 
+          p.product_id,
+          COALESCE(
+            (SELECT reorder_days 
+             FROM stock_thresholds st 
+             JOIN product_categories pc ON st.category_id = pc.category_id
+             WHERE pc.product_id = p.product_id 
+             AND st.vendor = p.vendor LIMIT 1),
+            (SELECT reorder_days 
+             FROM stock_thresholds st 
+             JOIN product_categories pc ON st.category_id = pc.category_id
+             WHERE pc.product_id = p.product_id 
+             AND st.vendor IS NULL LIMIT 1),
+            (SELECT reorder_days 
+             FROM stock_thresholds st 
+             WHERE st.category_id IS NULL 
+             AND st.vendor = p.vendor LIMIT 1),
+            (SELECT reorder_days 
+             FROM stock_thresholds st 
+             WHERE st.category_id IS NULL 
+             AND st.vendor IS NULL LIMIT 1),
+            14
+          ) as reorder_days
+        FROM products p
+      )
       SELECT 
         p.title as product,
         p.SKU as sku,
         p.stock_quantity as stockQuantity,
-        GREATEST(ROUND(AVG(o.quantity) * 7), 5) as reorderPoint,
+        GREATEST(ROUND(AVG(o.quantity) * pt.reorder_days), ?) as reorderPoint,
         ROUND(SUM(o.quantity) / NULLIF(p.stock_quantity, 0), 1) as turnoverRate,
         CASE 
           WHEN p.stock_quantity = 0 THEN 0
-          ELSE ROUND(p.stock_quantity / NULLIF((SUM(o.quantity) / 30), 0))
+          ELSE ROUND(p.stock_quantity / NULLIF((SUM(o.quantity) / ?), 0))
         END as daysUntilStockout
       FROM products p
       LEFT JOIN orders o ON p.product_id = o.product_id
-      WHERE o.date >= DATE_SUB(CURDATE(), INTERVAL 30 DAY)
+      JOIN product_thresholds pt ON p.product_id = pt.product_id
+      WHERE o.date >= DATE_SUB(CURDATE(), INTERVAL ? DAY)
         AND p.managing_stock = true
       GROUP BY p.product_id
-      HAVING daysUntilStockout < 30 AND daysUntilStockout >= 0
+      HAVING daysUntilStockout < ? AND daysUntilStockout >= 0
       ORDER BY daysUntilStockout
       LIMIT 10
-    `);
+    `, [
+      config.low_stock_threshold,
+      config.turnover_period,
+      config.turnover_period,
+      config.turnover_period
+    ]);
 
     res.json({ turnoverByCategory, stockLevels, criticalItems });
   } catch (error) {