34073/backend/src/db/seeders/20231127130745-sample-data.js

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

const Classes = db.classes;

const Days = db.days;

const Lessons = db.lessons;

const Rooms = db.rooms;

const Subjects = db.subjects;

const Teachers = db.teachers;

const Timetables = db.timetables;

const ClassesData = [
  {
    class_name: 'Grade 1',

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

  {
    class_name: 'Grade 2',

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

  {
    class_name: 'Grade 3',

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

  {
    class_name: 'Grade 4',

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

  {
    class_name: 'Grade 5',

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

const DaysData = [
  {
    day_name: 'Friday',
  },

  {
    day_name: 'Friday',
  },

  {
    day_name: 'Friday',
  },

  {
    day_name: 'Wednesday',
  },

  {
    day_name: 'Tuesday',
  },
];

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

    // type code here for "relation_one" field

    // type code here for "relation_one" field

    times_per_week: 3,

    duration: 1,
  },

  {
    // type code here for "relation_one" field

    // type code here for "relation_one" field

    // type code here for "relation_one" field

    times_per_week: 2,

    duration: 2,
  },

  {
    // type code here for "relation_one" field

    // type code here for "relation_one" field

    // type code here for "relation_one" field

    times_per_week: 4,

    duration: 1,
  },

  {
    // type code here for "relation_one" field

    // type code here for "relation_one" field

    // type code here for "relation_one" field

    times_per_week: 3,

    duration: 2,
  },

  {
    // type code here for "relation_one" field

    // type code here for "relation_one" field

    // type code here for "relation_one" field

    times_per_week: 1,

    duration: 3,
  },
];

const RoomsData = [
  {
    room_name: 'Room 101',

    capacity: 30,
  },

  {
    room_name: 'Room 102',

    capacity: 25,
  },

  {
    room_name: 'Room 103',

    capacity: 20,
  },

  {
    room_name: 'Room 104',

    capacity: 35,
  },

  {
    room_name: 'Room 105',

    capacity: 40,
  },
];

const SubjectsData = [
  {
    subject_name: 'Mathematics',
  },

  {
    subject_name: 'Science',
  },

  {
    subject_name: 'History',
  },

  {
    subject_name: 'English',
  },

  {
    subject_name: 'Art',
  },
];

const TeachersData = [
  {
    teacher_name: 'Alice Green',
  },

  {
    teacher_name: 'Bob White',
  },

  {
    teacher_name: 'Charlie Black',
  },

  {
    teacher_name: 'Diana Blue',
  },

  {
    teacher_name: 'Eve Red',
  },
];

const TimetablesData = [
  {
    name: 'Spring Semester 2024',

    periods_per_day: 6,

    // type code here for "relation_many" field

    // type code here for "relation_many" field

    // type code here for "relation_many" field

    // type code here for "relation_many" field

    // type code here for "relation_many" field

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

  {
    name: 'Fall Semester 2023',

    periods_per_day: 5,

    // type code here for "relation_many" field

    // type code here for "relation_many" field

    // type code here for "relation_many" field

    // type code here for "relation_many" field

    // type code here for "relation_many" field

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

  {
    name: 'Summer School 2023',

    periods_per_day: 4,

    // type code here for "relation_many" field

    // type code here for "relation_many" field

    // type code here for "relation_many" field

    // type code here for "relation_many" field

    // type code here for "relation_many" field

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

  {
    name: 'Winter Term 2023',

    periods_per_day: 3,

    // type code here for "relation_many" field

    // type code here for "relation_many" field

    // type code here for "relation_many" field

    // type code here for "relation_many" field

    // type code here for "relation_many" field

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

  {
    name: 'Autumn Term 2023',

    periods_per_day: 7,

    // type code here for "relation_many" field

    // type code here for "relation_many" field

    // type code here for "relation_many" field

    // type code here for "relation_many" field

    // type code here for "relation_many" field

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

// Similar logic for "relation_many"

async function associateClassWithClass_teacher() {
  const relatedClass_teacher0 = await Teachers.findOne({
    offset: Math.floor(Math.random() * (await Teachers.count())),
  });
  const Class0 = await Classes.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Class0?.setClass_teacher) {
    await Class0.setClass_teacher(relatedClass_teacher0);
  }

  const relatedClass_teacher1 = await Teachers.findOne({
    offset: Math.floor(Math.random() * (await Teachers.count())),
  });
  const Class1 = await Classes.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Class1?.setClass_teacher) {
    await Class1.setClass_teacher(relatedClass_teacher1);
  }

  const relatedClass_teacher2 = await Teachers.findOne({
    offset: Math.floor(Math.random() * (await Teachers.count())),
  });
  const Class2 = await Classes.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Class2?.setClass_teacher) {
    await Class2.setClass_teacher(relatedClass_teacher2);
  }

  const relatedClass_teacher3 = await Teachers.findOne({
    offset: Math.floor(Math.random() * (await Teachers.count())),
  });
  const Class3 = await Classes.findOne({
    order: [['id', 'ASC']],
    offset: 3,
  });
  if (Class3?.setClass_teacher) {
    await Class3.setClass_teacher(relatedClass_teacher3);
  }

  const relatedClass_teacher4 = await Teachers.findOne({
    offset: Math.floor(Math.random() * (await Teachers.count())),
  });
  const Class4 = await Classes.findOne({
    order: [['id', 'ASC']],
    offset: 4,
  });
  if (Class4?.setClass_teacher) {
    await Class4.setClass_teacher(relatedClass_teacher4);
  }
}

async function associateLessonWithSubject() {
  const relatedSubject0 = await Subjects.findOne({
    offset: Math.floor(Math.random() * (await Subjects.count())),
  });
  const Lesson0 = await Lessons.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Lesson0?.setSubject) {
    await Lesson0.setSubject(relatedSubject0);
  }

  const relatedSubject1 = await Subjects.findOne({
    offset: Math.floor(Math.random() * (await Subjects.count())),
  });
  const Lesson1 = await Lessons.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Lesson1?.setSubject) {
    await Lesson1.setSubject(relatedSubject1);
  }

  const relatedSubject2 = await Subjects.findOne({
    offset: Math.floor(Math.random() * (await Subjects.count())),
  });
  const Lesson2 = await Lessons.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Lesson2?.setSubject) {
    await Lesson2.setSubject(relatedSubject2);
  }

  const relatedSubject3 = await Subjects.findOne({
    offset: Math.floor(Math.random() * (await Subjects.count())),
  });
  const Lesson3 = await Lessons.findOne({
    order: [['id', 'ASC']],
    offset: 3,
  });
  if (Lesson3?.setSubject) {
    await Lesson3.setSubject(relatedSubject3);
  }

  const relatedSubject4 = await Subjects.findOne({
    offset: Math.floor(Math.random() * (await Subjects.count())),
  });
  const Lesson4 = await Lessons.findOne({
    order: [['id', 'ASC']],
    offset: 4,
  });
  if (Lesson4?.setSubject) {
    await Lesson4.setSubject(relatedSubject4);
  }
}

async function associateLessonWithTeacher() {
  const relatedTeacher0 = await Teachers.findOne({
    offset: Math.floor(Math.random() * (await Teachers.count())),
  });
  const Lesson0 = await Lessons.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Lesson0?.setTeacher) {
    await Lesson0.setTeacher(relatedTeacher0);
  }

  const relatedTeacher1 = await Teachers.findOne({
    offset: Math.floor(Math.random() * (await Teachers.count())),
  });
  const Lesson1 = await Lessons.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Lesson1?.setTeacher) {
    await Lesson1.setTeacher(relatedTeacher1);
  }

  const relatedTeacher2 = await Teachers.findOne({
    offset: Math.floor(Math.random() * (await Teachers.count())),
  });
  const Lesson2 = await Lessons.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Lesson2?.setTeacher) {
    await Lesson2.setTeacher(relatedTeacher2);
  }

  const relatedTeacher3 = await Teachers.findOne({
    offset: Math.floor(Math.random() * (await Teachers.count())),
  });
  const Lesson3 = await Lessons.findOne({
    order: [['id', 'ASC']],
    offset: 3,
  });
  if (Lesson3?.setTeacher) {
    await Lesson3.setTeacher(relatedTeacher3);
  }

  const relatedTeacher4 = await Teachers.findOne({
    offset: Math.floor(Math.random() * (await Teachers.count())),
  });
  const Lesson4 = await Lessons.findOne({
    order: [['id', 'ASC']],
    offset: 4,
  });
  if (Lesson4?.setTeacher) {
    await Lesson4.setTeacher(relatedTeacher4);
  }
}

async function associateLessonWithRoom() {
  const relatedRoom0 = await Rooms.findOne({
    offset: Math.floor(Math.random() * (await Rooms.count())),
  });
  const Lesson0 = await Lessons.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Lesson0?.setRoom) {
    await Lesson0.setRoom(relatedRoom0);
  }

  const relatedRoom1 = await Rooms.findOne({
    offset: Math.floor(Math.random() * (await Rooms.count())),
  });
  const Lesson1 = await Lessons.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Lesson1?.setRoom) {
    await Lesson1.setRoom(relatedRoom1);
  }

  const relatedRoom2 = await Rooms.findOne({
    offset: Math.floor(Math.random() * (await Rooms.count())),
  });
  const Lesson2 = await Lessons.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Lesson2?.setRoom) {
    await Lesson2.setRoom(relatedRoom2);
  }

  const relatedRoom3 = await Rooms.findOne({
    offset: Math.floor(Math.random() * (await Rooms.count())),
  });
  const Lesson3 = await Lessons.findOne({
    order: [['id', 'ASC']],
    offset: 3,
  });
  if (Lesson3?.setRoom) {
    await Lesson3.setRoom(relatedRoom3);
  }

  const relatedRoom4 = await Rooms.findOne({
    offset: Math.floor(Math.random() * (await Rooms.count())),
  });
  const Lesson4 = await Lessons.findOne({
    order: [['id', 'ASC']],
    offset: 4,
  });
  if (Lesson4?.setRoom) {
    await Lesson4.setRoom(relatedRoom4);
  }
}

// Similar logic for "relation_many"

// Similar logic for "relation_many"

// Similar logic for "relation_many"

// Similar logic for "relation_many"

// Similar logic for "relation_many"

// Similar logic for "relation_many"

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

    await Days.bulkCreate(DaysData);

    await Lessons.bulkCreate(LessonsData);

    await Rooms.bulkCreate(RoomsData);

    await Subjects.bulkCreate(SubjectsData);

    await Teachers.bulkCreate(TeachersData);

    await Timetables.bulkCreate(TimetablesData);

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

      await associateClassWithClass_teacher(),

      await associateLessonWithSubject(),

      await associateLessonWithTeacher(),

      await associateLessonWithRoom(),

      // Similar logic for "relation_many"

      // Similar logic for "relation_many"

      // Similar logic for "relation_many"

      // Similar logic for "relation_many"

      // Similar logic for "relation_many"

      // Similar logic for "relation_many"
    ]);
  },

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

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

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

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

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

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

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