33531/backend/src/db/seeders/20231127130745-sample-data.js

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

const Applications = db.applications;

const InternshipCoordinators = db.internship_coordinators;

const InternshipSupervisors = db.internship_supervisors;

const Internships = db.internships;

const Students = db.students;

const Companies = db.companies;

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

    // type code here for "relation_one" field

    status: 'applied',

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

  {
    // type code here for "relation_one" field

    // type code here for "relation_one" field

    status: 'applied',

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

  {
    // type code here for "relation_one" field

    // type code here for "relation_one" field

    status: 'accepted',

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

const InternshipCoordinatorsData = [
  {
    first_name: 'Alice',

    last_name: 'Williams',

    email: 'alice.williams@techcorp.com',

    // type code here for "relation_many" field

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

  {
    first_name: 'David',

    last_name: 'Miller',

    email: 'david.miller@innovatech.com',

    // type code here for "relation_many" field

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

  {
    first_name: 'Laura',

    last_name: 'Wilson',

    email: 'laura.wilson@futureworks.com',

    // type code here for "relation_many" field

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

const InternshipSupervisorsData = [
  {
    first_name: 'Robert',

    last_name: 'Anderson',

    email: 'robert.anderson@techcorp.com',

    // type code here for "relation_many" field

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

  {
    first_name: 'Patricia',

    last_name: 'Thomas',

    email: 'patricia.thomas@innovatech.com',

    // type code here for "relation_many" field

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

  {
    first_name: 'Charles',

    last_name: 'Jackson',

    email: 'charles.jackson@futureworks.com',

    // type code here for "relation_many" field

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

const InternshipsData = [
  {
    title: 'Software Development Intern',

    description: 'Work on developing new software solutions.',

    start_date: new Date('2024-06-01T09:00:00Z'),

    end_date: new Date('2024-08-31T17:00:00Z'),

    // type code here for "relation_one" field

    // type code here for "relation_many" field

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

  {
    title: 'Marketing Intern',

    description: 'Assist in marketing campaigns and strategies.',

    start_date: new Date('2024-06-15T09:00:00Z'),

    end_date: new Date('2024-09-15T17:00:00Z'),

    // type code here for "relation_one" field

    // type code here for "relation_many" field

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

  {
    title: 'Data Analysis Intern',

    description: 'Analyze data trends and provide insights.',

    start_date: new Date('2024-07-01T09:00:00Z'),

    end_date: new Date('2024-09-30T17:00:00Z'),

    // type code here for "relation_one" field

    // type code here for "relation_many" field

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

const StudentsData = [
  {
    first_name: 'John',

    last_name: 'Doe',

    email: 'john.doe@example.com',

    // type code here for "relation_one" field

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

  {
    first_name: 'Jane',

    last_name: 'Smith',

    email: 'jane.smith@example.com',

    // type code here for "relation_one" field

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

  {
    first_name: 'Emily',

    last_name: 'Johnson',

    email: 'emily.johnson@example.com',

    // type code here for "relation_one" field

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

const CompaniesData = [
  {
    name: 'TechCorp',
  },

  {
    name: 'Innovatech',
  },

  {
    name: 'FutureWorks',
  },
];

// Similar logic for "relation_many"

async function associateUserWithCompany() {
  const relatedCompany0 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const User0 = await Users.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (User0?.setCompany) {
    await User0.setCompany(relatedCompany0);
  }

  const relatedCompany1 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const User1 = await Users.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (User1?.setCompany) {
    await User1.setCompany(relatedCompany1);
  }

  const relatedCompany2 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const User2 = await Users.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (User2?.setCompany) {
    await User2.setCompany(relatedCompany2);
  }
}

async function associateApplicationWithStudent() {
  const relatedStudent0 = await Students.findOne({
    offset: Math.floor(Math.random() * (await Students.count())),
  });
  const Application0 = await Applications.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Application0?.setStudent) {
    await Application0.setStudent(relatedStudent0);
  }

  const relatedStudent1 = await Students.findOne({
    offset: Math.floor(Math.random() * (await Students.count())),
  });
  const Application1 = await Applications.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Application1?.setStudent) {
    await Application1.setStudent(relatedStudent1);
  }

  const relatedStudent2 = await Students.findOne({
    offset: Math.floor(Math.random() * (await Students.count())),
  });
  const Application2 = await Applications.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Application2?.setStudent) {
    await Application2.setStudent(relatedStudent2);
  }
}

async function associateApplicationWithInternship() {
  const relatedInternship0 = await Internships.findOne({
    offset: Math.floor(Math.random() * (await Internships.count())),
  });
  const Application0 = await Applications.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Application0?.setInternship) {
    await Application0.setInternship(relatedInternship0);
  }

  const relatedInternship1 = await Internships.findOne({
    offset: Math.floor(Math.random() * (await Internships.count())),
  });
  const Application1 = await Applications.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Application1?.setInternship) {
    await Application1.setInternship(relatedInternship1);
  }

  const relatedInternship2 = await Internships.findOne({
    offset: Math.floor(Math.random() * (await Internships.count())),
  });
  const Application2 = await Applications.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Application2?.setInternship) {
    await Application2.setInternship(relatedInternship2);
  }
}

async function associateApplicationWithCompany() {
  const relatedCompany0 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const Application0 = await Applications.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Application0?.setCompany) {
    await Application0.setCompany(relatedCompany0);
  }

  const relatedCompany1 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const Application1 = await Applications.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Application1?.setCompany) {
    await Application1.setCompany(relatedCompany1);
  }

  const relatedCompany2 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const Application2 = await Applications.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Application2?.setCompany) {
    await Application2.setCompany(relatedCompany2);
  }
}

// Similar logic for "relation_many"

async function associateInternshipCoordinatorWithCompany() {
  const relatedCompany0 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const InternshipCoordinator0 = await InternshipCoordinators.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (InternshipCoordinator0?.setCompany) {
    await InternshipCoordinator0.setCompany(relatedCompany0);
  }

  const relatedCompany1 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const InternshipCoordinator1 = await InternshipCoordinators.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (InternshipCoordinator1?.setCompany) {
    await InternshipCoordinator1.setCompany(relatedCompany1);
  }

  const relatedCompany2 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const InternshipCoordinator2 = await InternshipCoordinators.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (InternshipCoordinator2?.setCompany) {
    await InternshipCoordinator2.setCompany(relatedCompany2);
  }
}

// Similar logic for "relation_many"

async function associateInternshipSupervisorWithCompany() {
  const relatedCompany0 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const InternshipSupervisor0 = await InternshipSupervisors.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (InternshipSupervisor0?.setCompany) {
    await InternshipSupervisor0.setCompany(relatedCompany0);
  }

  const relatedCompany1 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const InternshipSupervisor1 = await InternshipSupervisors.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (InternshipSupervisor1?.setCompany) {
    await InternshipSupervisor1.setCompany(relatedCompany1);
  }

  const relatedCompany2 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const InternshipSupervisor2 = await InternshipSupervisors.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (InternshipSupervisor2?.setCompany) {
    await InternshipSupervisor2.setCompany(relatedCompany2);
  }
}

async function associateInternshipWithCompany() {
  const relatedCompany0 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const Internship0 = await Internships.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Internship0?.setCompany) {
    await Internship0.setCompany(relatedCompany0);
  }

  const relatedCompany1 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const Internship1 = await Internships.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Internship1?.setCompany) {
    await Internship1.setCompany(relatedCompany1);
  }

  const relatedCompany2 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const Internship2 = await Internships.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Internship2?.setCompany) {
    await Internship2.setCompany(relatedCompany2);
  }
}

// Similar logic for "relation_many"

async function associateInternshipWithCompany() {
  const relatedCompany0 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const Internship0 = await Internships.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Internship0?.setCompany) {
    await Internship0.setCompany(relatedCompany0);
  }

  const relatedCompany1 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const Internship1 = await Internships.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Internship1?.setCompany) {
    await Internship1.setCompany(relatedCompany1);
  }

  const relatedCompany2 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const Internship2 = await Internships.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Internship2?.setCompany) {
    await Internship2.setCompany(relatedCompany2);
  }
}

async function associateStudentWithCompany() {
  const relatedCompany0 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const Student0 = await Students.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Student0?.setCompany) {
    await Student0.setCompany(relatedCompany0);
  }

  const relatedCompany1 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const Student1 = await Students.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Student1?.setCompany) {
    await Student1.setCompany(relatedCompany1);
  }

  const relatedCompany2 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const Student2 = await Students.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Student2?.setCompany) {
    await Student2.setCompany(relatedCompany2);
  }
}

async function associateStudentWithCompany() {
  const relatedCompany0 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const Student0 = await Students.findOne({
    order: [['id', 'ASC']],
    offset: 0,
  });
  if (Student0?.setCompany) {
    await Student0.setCompany(relatedCompany0);
  }

  const relatedCompany1 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const Student1 = await Students.findOne({
    order: [['id', 'ASC']],
    offset: 1,
  });
  if (Student1?.setCompany) {
    await Student1.setCompany(relatedCompany1);
  }

  const relatedCompany2 = await Companies.findOne({
    offset: Math.floor(Math.random() * (await Companies.count())),
  });
  const Student2 = await Students.findOne({
    order: [['id', 'ASC']],
    offset: 2,
  });
  if (Student2?.setCompany) {
    await Student2.setCompany(relatedCompany2);
  }
}

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

    await InternshipCoordinators.bulkCreate(InternshipCoordinatorsData);

    await InternshipSupervisors.bulkCreate(InternshipSupervisorsData);

    await Internships.bulkCreate(InternshipsData);

    await Students.bulkCreate(StudentsData);

    await Companies.bulkCreate(CompaniesData);

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

      await associateUserWithCompany(),

      await associateApplicationWithStudent(),

      await associateApplicationWithInternship(),

      await associateApplicationWithCompany(),

      // Similar logic for "relation_many"

      await associateInternshipCoordinatorWithCompany(),

      // Similar logic for "relation_many"

      await associateInternshipSupervisorWithCompany(),

      await associateInternshipWithCompany(),

      // Similar logic for "relation_many"

      await associateInternshipWithCompany(),

      await associateStudentWithCompany(),

      await associateStudentWithCompany(),
    ]);
  },

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

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

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

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

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

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