71 lines
1.7 KiB
PHP
71 lines
1.7 KiB
PHP
<?php
|
|
namespace App\Services;
|
|
|
|
use App\Models\Participant;
|
|
use Illuminate\Support\Collection;
|
|
|
|
class MatcherService
|
|
{
|
|
public function match(): void
|
|
{
|
|
$participants = Participant::all();
|
|
|
|
if ($participants->count() < 2) {
|
|
return;
|
|
}
|
|
|
|
$assignments = [];
|
|
|
|
$newParticipantIds = $participants
|
|
->filter(fn($p) => $p->is_unmatched)
|
|
->pluck('id')
|
|
->shuffle()
|
|
->all();
|
|
|
|
$desperateGiverIds = $participants
|
|
->filter(fn($p) => $p->is_desperate && !$p->hasReceiver())
|
|
->pluck('id')
|
|
->shuffle()
|
|
->all();
|
|
|
|
$desperateReceiverIds = $participants
|
|
->filter(fn($p) => $p->is_desperate && !$p->hasGiver())
|
|
->pluck('id')
|
|
->shuffle()
|
|
->all();
|
|
|
|
while (!empty($desperateGiverIds) && !empty($desperateReceiverIds)) {
|
|
|
|
$giverId = array_shift($desperateGiverIds);
|
|
$receiverId = array_shift($desperateReceiverIds);
|
|
|
|
if ($giverId === $receiverId) {
|
|
array_unshift($desperateReceiverIds, $receiverId);
|
|
continue;
|
|
}
|
|
|
|
$assignments[$giverId] = $receiverId;
|
|
}
|
|
|
|
$newCount = count($newParticipantIds);
|
|
if ($newCount >= 2) {
|
|
|
|
for ($i = 0; $i < $newCount; $i++) {
|
|
|
|
$currentId = $newParticipantIds[$i];
|
|
|
|
$nextId = $newParticipantIds[($i + 1) % $newCount];
|
|
|
|
$assignments[$currentId] = $nextId;
|
|
}
|
|
}
|
|
|
|
|
|
foreach ($assignments as $giverId => $receiverId) {
|
|
Participant::where('id', $giverId)->update([
|
|
'giving_id' => $receiverId,
|
|
]);
|
|
}
|
|
}
|
|
}
|