text: const router = require('express').Router();
  const { Category, Product } = require('../../models');
  
  // The `/api/categories` endpoint
  
  router.get('/', (req, res) => {
     // find all categories
    // be sure to include its associated Products
    Category.findAll({
      include: [
        {
          model: Product,
          attributes: ['id', 'product_name', 'price', 'stock', 'category_id']
        }
      ]
    })
      .then(dbCategoryData => res.json(dbCategoryData))
      .catch(err => {
        console.log(err);
        res.status(500).json(err);
      });
  });
  
  router.get('/:id', (req, res) => {
    // find one category by its `id` value
    // be sure to include its associated Products
    Category.findOne({
      where: {
        id: req.params.id
      },
      attributes:['id', 'category_name'],
      include: [
        {
          model: Product,
          attributes: ['id', 'product_name', 'price', 'stock', 'category_id']
        }
      ]
    })
      .then(dbCategoryData => {
        if (!dbCategoryData) {
          res.status(404).json({ message: 'No category found'}); 
          return; 
        }
        res.json(dbCategoryData);
      })
      .catch(err => {
        console.log(err);
        res.status(500).json(err);
      });
  });
  
  router.post('/', (req, res) => {
      // create a new category
    Category.create({
      category_name: req.body.category_name
    })
      .then(dbCategoryData => res.json(dbCategoryData))
      .catch(err => {
          console.log(err);
          res.status(500).json(err);
    });
  });
  
  
  router.put('/:id', (req, res) => {
      // update a category by its `id` value
  
    Category.update(req.body, {
      where: {
          id: req.params.id
      }
    })
      .then(dbCategoryData => {
          if (!dbCategoryData[0]) {
              res.status(404).json({ message: 'No category found'});
              return;
          }
          res.json(dbCategoryData);
    })
      .catch(err => {
          console.log(err); 
          res.status(500).json(err);
    });
  
  });
  
  
  router.delete('/:id', (req, res) => {
      // delete a category by its `id` value
    Category.destroy({
      where: {
          id: req.params.id
      }
    })
      .then(dbCategoryData => {
          if (!dbCategoryData) {
              res.status(404).json({ message: 'No category found'});
              return;
          }
          res.json(dbCategoryData);
    })
      .catch(err => {
          console.log(err);
          res.status(500).json(err);
    });
  });
  
  
  module.exports = router;