CourseWork/app/Services/StudentService.php

<?php

namespace App\Services;

use App\Enums\ScoreEnum;
use App\Models\Student;
use App\Models\User;
use Illuminate\Pagination\LengthAwarePaginator;

class StudentService
{
    public function create(array $data): Student
    {
        $user = User::create([
            'email' => $data['email'],
            'password' => $data['password'],
        ]);
        $student = Student::create([
            'name' => $data['name'],
            'last_name' => $data['last_name'],
            'middle_name' => $data['middle_name'],
            'birthday' => $data['birthday'],
            'grade_id' => $data['grade_id'],
        ]);
        $student->user()->save($user);
        $student
            ->lessons()
            ->syncWithPivotValues($student->grade->lessons->pluck('id')->all(), ['score' => ScoreEnum::WithoutScore]);

        return $student;
    }

    public function update(Student $student, array $data): Student
    {
        $student->user()->update([
            'email' => $data['email'],
            'password' => $data['password'],
        ]);

        $student->update([
            'name' => $data['name'],
            'last_name' => $data['last_name'],
            'middle_name' => $data['middle_name'],
            'birthday' => $data['birthday'],
            'grade_id' => $data['grade_id'],
        ]);

        return $student;
    }

    public function delete($model): void
    {
        $model->user()->delete();
        $model->delete();
    }
}