seeder.js

import connectDB from "./config/db.js";
import dotenv from "dotenv";

// models
import User from "./models/userModel.js";
import Product from "./models/product.model.js";
import Category from "./models/categories.model.js";
// mocks
import mockUsers from "./__mocks__/users.js";
import mockProducts from "./__mocks__/product.js";
import mockCategories from "./__mocks__/categories.js";

dotenv.config();

connectDB();

/**
 * imports seeder data to MongoDB Atlas
 */
const importData = async () => {
  try {
    // delete stuff before inserting new stuff
    await User.deleteMany();
    await Product.deleteMany();
    await Category.deleteMany();

    // insert mocks
    await User.insertMany(mockUsers);
    const insertedProducts = await Product.insertMany(mockProducts);

    // insert _id of 1st product into products array.

    // Computer & Tablets
    mockCategories[0].products.push(insertedProducts[0]._id);
    mockCategories[0].products.push(insertedProducts[1]._id);
    mockCategories[0].products.push(insertedProducts[2]._id);
    mockCategories[0].products.push(insertedProducts[3]._id);
    mockCategories[0].products.push(insertedProducts[4]._id);

    // TV & Accessories
    mockCategories[1].products.push(insertedProducts[5]._id);
    mockCategories[1].products.push(insertedProducts[6]._id);
    mockCategories[1].products.push(insertedProducts[7]._id);
    mockCategories[1].products.push(insertedProducts[8]._id);

    // Home Applliances
    mockCategories[2].products.push(insertedProducts[9]._id);
    mockCategories[2].products.push(insertedProducts[10]._id);
    mockCategories[2].products.push(insertedProducts[11]._id);
    mockCategories[2].products.push(insertedProducts[12]._id);
    mockCategories[2].products.push(insertedProducts[13]._id);

    // Phones & Wearables
    mockCategories[3].products.push(insertedProducts[14]._id);
    mockCategories[3].products.push(insertedProducts[15]._id);
    mockCategories[3].products.push(insertedProducts[16]._id);
    mockCategories[3].products.push(insertedProducts[17]._id);

    // save Categories
    await Category.insertMany(mockCategories);

    // logging
    console.log("data imported");

    process.exit(0);
  } catch (error) {
    console.error(error);
    process.exit(1);
  }
};

// destroy all data in mongoDB database
const destroyData = async () => {
  try {
    // delete stuff
    await User.deleteMany();
    await Product.deleteMany();
    await Order.deleteMany();

    console.log("data destroyed");
    process.exit(1);
  } catch (error) {
    console.error(error);
    process.exit(0);
  }
};

process.argv[2] === "-d" ? destroyData() : importData();