<?php

namespace App\Filament\Resources\TeacherSubjectResource\Pages;

use App\Filament\Resources\TeacherSubjectResource;
use App\Models\TeacherSubject;
use Filament\Actions;
use Filament\Notifications\Notification;
use Filament\Resources\Pages\CreateRecord;

class CreateTeacherSubject extends CreateRecord
{
    protected static string $resource = TeacherSubjectResource::class;

    protected function mutateFormDataBeforeCreate(array $data): array
    {
        $exists = TeacherSubject::where('teacher_id', $data['teacher_id'])
            ->where('subject_id', $data['subject_id'])
            ->where('class_id', $data['class_id'])
            ->where('academic_year', $data['academic_year'])
            ->exists();

        if ($exists) {
            Notification::make()
                ->title('Failed to save')
                ->body('The combination of teacher, subject, class, and academic year is already registered.')
                ->danger()
                ->send();

            $this->halt();
        }

        return $data;
    }
}