30263/backend/src/db/seeders/20231127130745-sample-data.js

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

const Answers = db.answers;

const Questions = db.questions;

const AnswersData = [
  {
    content: 'The capital of France is Paris.',

    // type code here for "relation_one" field

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

  {
    content:
      'Machine learning is a method of data analysis that automates analytical model building.',

    // type code here for "relation_one" field

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

  {
    content:
      'AI can improve efficiency, accuracy, and decision-making processes.',

    // type code here for "relation_one" field

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

const QuestionsData = [
  {
    content: 'What is the capital of France?',

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

  {
    content: 'How does machine learning work?',

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

  {
    content: 'What are the benefits of AI?',

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

// Similar logic for "relation_many"

async function associateAnswerWithQuestion() {
  const relatedQuestion0 = await Questions.findOne({
    offset: Math.floor(Math.random() * (await Questions.count())),
  });
  const Answer0 = await Answers.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Answer0?.setQuestion) {
    await Answer0.setQuestion(relatedQuestion0);
  }

  const relatedQuestion1 = await Questions.findOne({
    offset: Math.floor(Math.random() * (await Questions.count())),
  });
  const Answer1 = await Answers.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Answer1?.setQuestion) {
    await Answer1.setQuestion(relatedQuestion1);
  }

  const relatedQuestion2 = await Questions.findOne({
    offset: Math.floor(Math.random() * (await Questions.count())),
  });
  const Answer2 = await Answers.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Answer2?.setQuestion) {
    await Answer2.setQuestion(relatedQuestion2);
  }
}

async function associateAnswerWithUser() {
  const relatedUser0 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Answer0 = await Answers.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Answer0?.setUser) {
    await Answer0.setUser(relatedUser0);
  }

  const relatedUser1 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Answer1 = await Answers.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Answer1?.setUser) {
    await Answer1.setUser(relatedUser1);
  }

  const relatedUser2 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Answer2 = await Answers.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Answer2?.setUser) {
    await Answer2.setUser(relatedUser2);
  }
}

async function associateQuestionWithUser() {
  const relatedUser0 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Question0 = await Questions.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Question0?.setUser) {
    await Question0.setUser(relatedUser0);
  }

  const relatedUser1 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Question1 = await Questions.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Question1?.setUser) {
    await Question1.setUser(relatedUser1);
  }

  const relatedUser2 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Question2 = await Questions.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Question2?.setUser) {
    await Question2.setUser(relatedUser2);
  }
}

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

    await Questions.bulkCreate(QuestionsData);

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

      await associateAnswerWithQuestion(),

      await associateAnswerWithUser(),

      await associateQuestionWithUser(),
    ]);
  },

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

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