31903/backend/src/db/seeders/20231127130745-sample-data.js

const db = require('../models');
const Users = db.users;

const Categories = db.categories;

const Expenses = db.expenses;

const CategoriesData = [
  {
    name: 'Food & Dining',

    icon: 'mdiBus',

    // type code here for "relation_many" field
  },

  {
    name: 'Transportation',

    icon: 'mdiSchool',

    // type code here for "relation_many" field
  },

  {
    name: 'Shopping',

    icon: 'mdiSchool',

    // type code here for "relation_many" field
  },

  {
    name: 'Entertainment',

    icon: 'mdiLightbulb',

    // type code here for "relation_many" field
  },
];

const ExpensesData = [
  {
    amount: 50.75,

    // type code here for "relation_one" field

    date_time: new Date('2023-10-01T12:00:00Z'),

    description: 'Lunch at Italian restaurant',

    payment_method: 'BankTransfer',

    // type code here for "relation_one" field
  },

  {
    amount: 120,

    // type code here for "relation_one" field

    date_time: new Date('2023-10-02T08:30:00Z'),

    description: 'Monthly subway pass',

    payment_method: 'Other',

    // type code here for "relation_one" field
  },

  {
    amount: 200.5,

    // type code here for "relation_one" field

    date_time: new Date('2023-10-03T15:45:00Z'),

    description: 'New shoes',

    payment_method: 'CreditCard',

    // type code here for "relation_one" field
  },

  {
    amount: 15,

    // type code here for "relation_one" field

    date_time: new Date('2023-10-04T19:00:00Z'),

    description: 'Movie ticket',

    payment_method: 'Other',

    // type code here for "relation_one" field
  },
];

// Similar logic for "relation_many"

// Similar logic for "relation_many"

async function associateExpenseWithCategory() {
  const relatedCategory0 = await Categories.findOne({
    offset: Math.floor(Math.random() * (await Categories.count())),
  });
  const Expense0 = await Expenses.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Expense0?.setCategory) {
    await Expense0.setCategory(relatedCategory0);
  }

  const relatedCategory1 = await Categories.findOne({
    offset: Math.floor(Math.random() * (await Categories.count())),
  });
  const Expense1 = await Expenses.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Expense1?.setCategory) {
    await Expense1.setCategory(relatedCategory1);
  }

  const relatedCategory2 = await Categories.findOne({
    offset: Math.floor(Math.random() * (await Categories.count())),
  });
  const Expense2 = await Expenses.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Expense2?.setCategory) {
    await Expense2.setCategory(relatedCategory2);
  }

  const relatedCategory3 = await Categories.findOne({
    offset: Math.floor(Math.random() * (await Categories.count())),
  });
  const Expense3 = await Expenses.findOne({
    order: [['id', 'ASC']],
    offset: 3,
  });
  if (Expense3?.setCategory) {
    await Expense3.setCategory(relatedCategory3);
  }
}

async function associateExpenseWithUser() {
  const relatedUser0 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Expense0 = await Expenses.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Expense0?.setUser) {
    await Expense0.setUser(relatedUser0);
  }

  const relatedUser1 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Expense1 = await Expenses.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Expense1?.setUser) {
    await Expense1.setUser(relatedUser1);
  }

  const relatedUser2 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Expense2 = await Expenses.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Expense2?.setUser) {
    await Expense2.setUser(relatedUser2);
  }

  const relatedUser3 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Expense3 = await Expenses.findOne({
    order: [['id', 'ASC']],
    offset: 3,
  });
  if (Expense3?.setUser) {
    await Expense3.setUser(relatedUser3);
  }
}

module.exports = {
  up: async (queryInterface, Sequelize) => {
    await Categories.bulkCreate(CategoriesData);

    await Expenses.bulkCreate(ExpensesData);

    await Promise.all([
      // Similar logic for "relation_many"

      // Similar logic for "relation_many"

      await associateExpenseWithCategory(),

      await associateExpenseWithUser(),
    ]);
  },

  down: async (queryInterface, Sequelize) => {
    await queryInterface.bulkDelete('categories', null, {});

    await queryInterface.bulkDelete('expenses', null, {});
  },
};