31432/backend/src/db/seeders/20231127130745-sample-data.js

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

const Announcements = db.announcements;

const Memberships = db.memberships;

const Programs = db.programs;

const AnnouncementsData = [
  {
    title: 'New Year Promotion',

    content: 'Join now and get 20% off!',

    date: new Date('2023-01-01T00:00:00Z'),
  },

  {
    title: 'Summer Bootcamp',

    content: 'Sign up for our summer bootcamp!',

    date: new Date('2023-06-01T00:00:00Z'),
  },

  {
    title: 'Nutrition Workshop',

    content: 'Attend our nutrition workshop this weekend.',

    date: new Date('2023-03-15T00:00:00Z'),
  },

  {
    title: 'Holiday Hours',

    content: 'Check out our holiday hours.',

    date: new Date('2023-12-20T00:00:00Z'),
  },
];

const MembershipsData = [
  {
    // type code here for "relation_one" field

    start_date: new Date('2023-01-01T00:00:00Z'),

    end_date: new Date('2023-04-01T00:00:00Z'),

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

  {
    // type code here for "relation_one" field

    start_date: new Date('2023-02-01T00:00:00Z'),

    end_date: new Date('2023-08-01T00:00:00Z'),

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

  {
    // type code here for "relation_one" field

    start_date: new Date('2023-03-01T00:00:00Z'),

    end_date: new Date('2023-04-01T00:00:00Z'),

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

  {
    // type code here for "relation_one" field

    start_date: new Date('2023-04-01T00:00:00Z'),

    end_date: new Date('2024-04-01T00:00:00Z'),

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

const ProgramsData = [
  {
    // type code here for "relation_one" field

    name: 'Weight Loss Program',

    description: 'A comprehensive weight loss program.',

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

  {
    // type code here for "relation_one" field

    name: 'Muscle Gain Program',

    description: 'A program focused on muscle gain.',

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

  {
    // type code here for "relation_one" field

    name: 'Cardio Program',

    description: 'A cardio-focused training program.',

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

  {
    // type code here for "relation_one" field

    name: 'Flexibility Program',

    description: 'A program to improve flexibility.',

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

// Similar logic for "relation_many"

async function associateMembershipWithUser() {
  const relatedUser0 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Membership0 = await Memberships.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Membership0?.setUser) {
    await Membership0.setUser(relatedUser0);
  }

  const relatedUser1 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Membership1 = await Memberships.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Membership1?.setUser) {
    await Membership1.setUser(relatedUser1);
  }

  const relatedUser2 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Membership2 = await Memberships.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Membership2?.setUser) {
    await Membership2.setUser(relatedUser2);
  }

  const relatedUser3 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Membership3 = await Memberships.findOne({
    order: [['id', 'ASC']],
    offset: 3,
  });
  if (Membership3?.setUser) {
    await Membership3.setUser(relatedUser3);
  }
}

async function associateProgramWithUser() {
  const relatedUser0 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Program0 = await Programs.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Program0?.setUser) {
    await Program0.setUser(relatedUser0);
  }

  const relatedUser1 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Program1 = await Programs.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Program1?.setUser) {
    await Program1.setUser(relatedUser1);
  }

  const relatedUser2 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Program2 = await Programs.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Program2?.setUser) {
    await Program2.setUser(relatedUser2);
  }

  const relatedUser3 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Program3 = await Programs.findOne({
    order: [['id', 'ASC']],
    offset: 3,
  });
  if (Program3?.setUser) {
    await Program3.setUser(relatedUser3);
  }
}

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

    await Memberships.bulkCreate(MembershipsData);

    await Programs.bulkCreate(ProgramsData);

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

      await associateMembershipWithUser(),

      await associateProgramWithUser(),
    ]);
  },

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

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

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