58 lines
1.5 KiB
PHP
58 lines
1.5 KiB
PHP
<?php
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namespace App\Services;
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use App\Exceptions\TabulationException;
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use App\Models\Entry;
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use App\Models\Event;
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use App\Models\Student;
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use Illuminate\Support\Facades\Cache;
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/**
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* returns a collection of doublers for the event in the form of
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* [studentId => [student=>student, entries=>[entries]]
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*/
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class DoublerService
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{
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public function doublersForEvent(Event $event)
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{
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$cacheKey = 'event'.$event->id.'doublers';
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return Cache::remember($cacheKey, 60, function () use ($event) {
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return $this->findDoublersForEvent($event);
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});
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}
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/**
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* @throws TabulationException
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*/
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protected function findDoublersForEvent(Event $event): array
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{
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$this->validateEvent($event);
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$entries = $event->entries;
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$entries->load('student.school');
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$entries->load('audition');
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$grouped = $entries->groupBy('student_id');
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// Filter out student groups with only one entry in the event
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$grouped = $grouped->filter(fn ($s) => $s->count() > 1);
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$doubler_array = [];
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foreach ($grouped as $student_id => $entries) {
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$doubler_array[$student_id] = [
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'student' => $entries[0]->student,
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'entries' => $entries,
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];
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}
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return $doubler_array;
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}
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/**
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* @throws TabulationException
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*/
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protected function validateEvent(Event $event)
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{
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if (! $event->exists) {
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throw new TabulationException('Invalid event provided');
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}
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}
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}
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