32575/backend/src/db/seeders/20231127130745-sample-data.js

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

const Attendances = db.attendances;

const Courses = db.courses;

const Faculties = db.faculties;

const Fees = db.fees;

const Marks = db.marks;

const Students = db.students;

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

    // type code here for "relation_one" field

    date: new Date('2023-10-01T08:00:00Z'),

    present: true,
  },

  {
    // type code here for "relation_one" field

    // type code here for "relation_one" field

    date: new Date('2023-10-01T08:00:00Z'),

    present: true,
  },

  {
    // type code here for "relation_one" field

    // type code here for "relation_one" field

    date: new Date('2023-10-01T08:00:00Z'),

    present: true,
  },
];

const CoursesData = [
  {
    course_name: 'Mathematics',

    // type code here for "relation_many" field

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

  {
    course_name: 'Physics',

    // type code here for "relation_many" field

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

  {
    course_name: 'Chemistry',

    // type code here for "relation_many" field

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

const FacultiesData = [
  {
    first_name: 'Madhunisha',

    last_name: 'R',

    contact_number: '9876543215',

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

  {
    first_name: 'Rajeshkannan',

    last_name: 'N',

    contact_number: '9876543216',

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

  {
    first_name: 'Nandhini',

    last_name: 'S',

    contact_number: '9876543217',

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

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

    amount: 5000,

    paid: true,
  },

  {
    // type code here for "relation_one" field

    amount: 5000,

    paid: true,
  },

  {
    // type code here for "relation_one" field

    amount: 5000,

    paid: true,
  },
];

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

    // type code here for "relation_one" field

    internal_1: 85,

    internal_2: 90,
  },

  {
    // type code here for "relation_one" field

    // type code here for "relation_one" field

    internal_1: 75,

    internal_2: 80,
  },

  {
    // type code here for "relation_one" field

    // type code here for "relation_one" field

    internal_1: 88,

    internal_2: 92,
  },
];

const StudentsData = [
  {
    first_name: 'Aadithya',

    last_name: 'V',

    contact_number: '9876543210',

    // type code here for "relation_one" field

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

  {
    first_name: 'Adhithyan',

    last_name: 'M S',

    contact_number: '9876543211',

    // type code here for "relation_one" field

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

  {
    first_name: 'Afreen',

    last_name: 'A',

    contact_number: '9876543212',

    // type code here for "relation_one" field

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

// Similar logic for "relation_many"

async function associateAttendanceWithStudent() {
  const relatedStudent0 = await Students.findOne({
    offset: Math.floor(Math.random() * (await Students.count())),
  });
  const Attendance0 = await Attendances.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Attendance0?.setStudent) {
    await Attendance0.setStudent(relatedStudent0);
  }

  const relatedStudent1 = await Students.findOne({
    offset: Math.floor(Math.random() * (await Students.count())),
  });
  const Attendance1 = await Attendances.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Attendance1?.setStudent) {
    await Attendance1.setStudent(relatedStudent1);
  }

  const relatedStudent2 = await Students.findOne({
    offset: Math.floor(Math.random() * (await Students.count())),
  });
  const Attendance2 = await Attendances.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Attendance2?.setStudent) {
    await Attendance2.setStudent(relatedStudent2);
  }
}

async function associateAttendanceWithCourse() {
  const relatedCourse0 = await Courses.findOne({
    offset: Math.floor(Math.random() * (await Courses.count())),
  });
  const Attendance0 = await Attendances.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Attendance0?.setCourse) {
    await Attendance0.setCourse(relatedCourse0);
  }

  const relatedCourse1 = await Courses.findOne({
    offset: Math.floor(Math.random() * (await Courses.count())),
  });
  const Attendance1 = await Attendances.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Attendance1?.setCourse) {
    await Attendance1.setCourse(relatedCourse1);
  }

  const relatedCourse2 = await Courses.findOne({
    offset: Math.floor(Math.random() * (await Courses.count())),
  });
  const Attendance2 = await Attendances.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Attendance2?.setCourse) {
    await Attendance2.setCourse(relatedCourse2);
  }
}

// Similar logic for "relation_many"

// Similar logic for "relation_many"

async function associateFacultyWithUser() {
  const relatedUser0 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Faculty0 = await Faculties.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Faculty0?.setUser) {
    await Faculty0.setUser(relatedUser0);
  }

  const relatedUser1 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Faculty1 = await Faculties.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Faculty1?.setUser) {
    await Faculty1.setUser(relatedUser1);
  }

  const relatedUser2 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Faculty2 = await Faculties.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Faculty2?.setUser) {
    await Faculty2.setUser(relatedUser2);
  }
}

async function associateFeeWithStudent() {
  const relatedStudent0 = await Students.findOne({
    offset: Math.floor(Math.random() * (await Students.count())),
  });
  const Fee0 = await Fees.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Fee0?.setStudent) {
    await Fee0.setStudent(relatedStudent0);
  }

  const relatedStudent1 = await Students.findOne({
    offset: Math.floor(Math.random() * (await Students.count())),
  });
  const Fee1 = await Fees.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Fee1?.setStudent) {
    await Fee1.setStudent(relatedStudent1);
  }

  const relatedStudent2 = await Students.findOne({
    offset: Math.floor(Math.random() * (await Students.count())),
  });
  const Fee2 = await Fees.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Fee2?.setStudent) {
    await Fee2.setStudent(relatedStudent2);
  }
}

async function associateMarkWithStudent() {
  const relatedStudent0 = await Students.findOne({
    offset: Math.floor(Math.random() * (await Students.count())),
  });
  const Mark0 = await Marks.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Mark0?.setStudent) {
    await Mark0.setStudent(relatedStudent0);
  }

  const relatedStudent1 = await Students.findOne({
    offset: Math.floor(Math.random() * (await Students.count())),
  });
  const Mark1 = await Marks.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Mark1?.setStudent) {
    await Mark1.setStudent(relatedStudent1);
  }

  const relatedStudent2 = await Students.findOne({
    offset: Math.floor(Math.random() * (await Students.count())),
  });
  const Mark2 = await Marks.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Mark2?.setStudent) {
    await Mark2.setStudent(relatedStudent2);
  }
}

async function associateMarkWithCourse() {
  const relatedCourse0 = await Courses.findOne({
    offset: Math.floor(Math.random() * (await Courses.count())),
  });
  const Mark0 = await Marks.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Mark0?.setCourse) {
    await Mark0.setCourse(relatedCourse0);
  }

  const relatedCourse1 = await Courses.findOne({
    offset: Math.floor(Math.random() * (await Courses.count())),
  });
  const Mark1 = await Marks.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Mark1?.setCourse) {
    await Mark1.setCourse(relatedCourse1);
  }

  const relatedCourse2 = await Courses.findOne({
    offset: Math.floor(Math.random() * (await Courses.count())),
  });
  const Mark2 = await Marks.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Mark2?.setCourse) {
    await Mark2.setCourse(relatedCourse2);
  }
}

async function associateStudentWithUser() {
  const relatedUser0 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Student0 = await Students.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Student0?.setUser) {
    await Student0.setUser(relatedUser0);
  }

  const relatedUser1 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Student1 = await Students.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Student1?.setUser) {
    await Student1.setUser(relatedUser1);
  }

  const relatedUser2 = await Users.findOne({
    offset: Math.floor(Math.random() * (await Users.count())),
  });
  const Student2 = await Students.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Student2?.setUser) {
    await Student2.setUser(relatedUser2);
  }
}

// Similar logic for "relation_many"

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

    await Courses.bulkCreate(CoursesData);

    await Faculties.bulkCreate(FacultiesData);

    await Fees.bulkCreate(FeesData);

    await Marks.bulkCreate(MarksData);

    await Students.bulkCreate(StudentsData);

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

      await associateAttendanceWithStudent(),

      await associateAttendanceWithCourse(),

      // Similar logic for "relation_many"

      // Similar logic for "relation_many"

      await associateFacultyWithUser(),

      await associateFeeWithStudent(),

      await associateMarkWithStudent(),

      await associateMarkWithCourse(),

      await associateStudentWithUser(),

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

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

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

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

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

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

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