text: // import important parts of sequelize library
  const { Model, DataTypes } = require('sequelize');
  // import our database connection from config.js
  const sequelize = require('../config/connection');
  
  // Initialize Product model (table) by extending off Sequelize's Model class
  class Product extends Model {}
  
  // set up fields and rules for Product model
  Product.init(
    {
      // define columns
      id: {
        type: DataTypes.INTEGER,
        allowNull: false,
        primaryKey: true,
        autoIncrement: true
      },
      product_name: {
        type: DataTypes.STRING,
        allowNull: false,
  
      },
      price: {
        type: DataTypes.DECIMAL,
        allowNull: false,
        validate: {
          isDecimal: true,
        },
      },
        stock: {
          type: DataTypes.INTEGER,
          allowNull: false,
          defaultValue: 10,
          validate: {
            isNumeric: true,
          },
        },
        category_id: {
          type: DataTypes.INTEGER,
          references: {
            model: 'category',
            key: 'id',
            unique: false
          }
        },
      
    },
    {
      sequelize,
      timestamps: false,
      freezeTableName: true,
      underscored: true,
      modelName: 'product',
    }
  );
  
  module.exports = Product;
  