<?php

namespace App\Services;

use Barryvdh\DomPDF\Facade\Pdf;
use Illuminate\Support\Facades\Auth;

class FileService
{
    public function exportSubjects()
    {
        $listSubjects = collect();
        $student = Auth::user()->userable;
        $subjects = $student->grade->subjects;
        $teachers = $student->grade->teachers;

        $teachers->each(function ($teacher) use ($subjects, $listSubjects) {
            $teacher->subjects->each(function ($subject) use ($subjects, $listSubjects, $teacher) {
                if ($subjects->contains($subject)) {
                    $listSubjects->push(['subject' => $subject->name, 'teacher' => $teacher->fio]);
                }
            });
        });

        return Pdf::loadView('subjects.pdf', ['subjects' => $listSubjects])->download('Предметы.pdf');
    }
}