Add backend changes and update scripts

2025-01-16 00:47:29 -05:00
parent 1ea02b8938
commit 7ec587595a
7 changed files with 589 additions and 174 deletions
--- a/inventory-server/src/routes/categories.js
+++ b/inventory-server/src/routes/categories.js
@@ -0,0 +1,120 @@
+const express = require('express');
+const router = express.Router();
+
+// Get categories with pagination, filtering, and sorting
+router.get('/', async (req, res) => {
+  const pool = req.app.locals.pool;
+  try {
+    const page = parseInt(req.query.page) || 1;
+    const limit = parseInt(req.query.limit) || 50;
+    const offset = (page - 1) * limit;
+    const search = req.query.search || '';
+    const parent = req.query.parent || 'all';
+    const performance = req.query.performance || 'all';
+    const sortColumn = req.query.sortColumn || 'name';
+    const sortDirection = req.query.sortDirection || 'asc';
+
+    // Build the WHERE clause based on filters
+    const whereConditions = [];
+    const params = [];
+
+    if (search) {
+      whereConditions.push('(c.name LIKE ? OR c.description LIKE ?)');
+      params.push(`%${search}%`, `%${search}%`);
+    }
+
+    if (parent !== 'all') {
+      if (parent === 'none') {
+        whereConditions.push('c.parent_category IS NULL');
+      } else {
+        whereConditions.push('c.parent_category = ?');
+        params.push(parent);
+      }
+    }
+
+    if (performance !== 'all') {
+      switch (performance) {
+        case 'high_growth':
+          whereConditions.push('cm.growth_rate >= 20');
+          break;
+        case 'growing':
+          whereConditions.push('cm.growth_rate >= 5 AND cm.growth_rate < 20');
+          break;
+        case 'stable':
+          whereConditions.push('cm.growth_rate >= -5 AND cm.growth_rate < 5');
+          break;
+        case 'declining':
+          whereConditions.push('cm.growth_rate < -5');
+          break;
+      }
+    }
+
+    const whereClause = whereConditions.length > 0 
+      ? 'WHERE ' + whereConditions.join(' AND ')
+      : '';
+
+    // Get total count for pagination
+    const [countResult] = await pool.query(`
+      SELECT COUNT(DISTINCT c.id) as total
+      FROM categories c
+      LEFT JOIN category_metrics cm ON c.id = cm.category_id
+      ${whereClause}
+    `, params);
+
+    // Get parent categories for filter dropdown
+    const [parentCategories] = await pool.query(`
+      SELECT DISTINCT parent_category 
+      FROM categories 
+      WHERE parent_category IS NOT NULL
+      ORDER BY parent_category
+    `);
+
+    // Get categories with metrics
+    const [categories] = await pool.query(`
+      SELECT 
+        c.id as category_id,
+        c.name,
+        c.description,
+        c.parent_category,
+        cm.product_count,
+        cm.total_value,
+        cm.avg_margin,
+        cm.turnover_rate,
+        cm.growth_rate,
+        cm.status
+      FROM categories c
+      LEFT JOIN category_metrics cm ON c.id = cm.category_id
+      ${whereClause}
+      ORDER BY ${sortColumn} ${sortDirection}
+      LIMIT ? OFFSET ?
+    `, [...params, limit, offset]);
+
+    // Get overall stats
+    const [stats] = await pool.query(`
+      SELECT 
+        COUNT(DISTINCT c.id) as totalCategories,
+        COUNT(DISTINCT CASE WHEN cm.status = 'active' THEN c.id END) as activeCategories,
+        SUM(cm.total_value) as totalValue,
+        AVG(cm.avg_margin) as avgMargin,
+        AVG(cm.growth_rate) as avgGrowth
+      FROM categories c
+      LEFT JOIN category_metrics cm ON c.id = cm.category_id
+    `);
+
+    res.json({
+      categories,
+      parentCategories: parentCategories.map(p => p.parent_category),
+      stats: stats[0],
+      pagination: {
+        total: countResult[0].total,
+        pages: Math.ceil(countResult[0].total / limit),
+        current: page,
+      }
+    });
+  } catch (error) {
+    console.error('Error fetching categories:', error);
+    res.status(500).json({ error: 'Failed to fetch categories' });
+  }
+});
+
+module.exports = router;