src/controllers/categoryController.js

// src/controllers/categoryController.js
const Category = require('../models/Category');

// @desc    Get all categories
// @route   GET /api/categories
// @access  Public
const getCategories = async (req, res) => {
  try {
    const categories = await Category.find({});
    res.json(categories);
  } catch (error) {
    res.status(500).json({ message: error.message });
  }
};

// @desc    Create category
// @route   POST /api/categories
// @access  Private/Admin
const createCategory = async (req, res) => {
  try {
    const { name, image } = req.body;
    const categoryExists = await Category.findOne({ name });

    if (categoryExists) {
      return res.status(400).json({ message: 'Category already exists' });
    }

    const category = await Category.create({ name, image });
    res.status(201).json(category);
  } catch (error) {
    res.status(400).json({ message: error.message });
  }
};

// @desc    Delete category
// @route   DELETE /api/categories/:id
// @access  Private/Admin
const deleteCategory = async (req, res) => {
  try {
    const category = await Category.findById(req.params.id);
    if (category) {
      await category.deleteOne();
      res.json({ message: 'Category removed' });
    } else {
      res.status(404).json({ message: 'Category not found' });
    }
  } catch (error) {
    res.status(500).json({ message: error.message });
  }
};

module.exports = { getCategories, createCategory, deleteCategory };