<?php
namespace Common\Votes;
use Auth;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Support\Str;
class StoreVote
{
public function execute($model, string $newVoteType, ?string $userIp)
{
$userId = Auth::id();
// if we can't match current user, bail
if (!$userId && !$userIp) {
return null;
}
$currentVote = $model
->votes()
->where(
fn(Builder $query) => $query
->where('user_id', $userId)
->orWhere('user_ip', $userIp),
)
->first();
// remove old vote from this user
if ($currentVote) {
$this->deleteCurrentVote($model, $currentVote);
}
// create a new rating
if (!$currentVote || $currentVote->vote_type !== $newVoteType) {
$this->storeVote($model, $newVoteType, $userId, $userIp);
}
return $model;
}
private function deleteCurrentVote($model, Vote $vote): void
{
$column = Str::plural($vote->vote_type);
if ($model->$column > 0) {
$model->decrement($column);
}
$vote->delete();
}
private function storeVote(
$model,
string $voteType,
?int $userId,
?string $userIp,
): void
{
$model->votes()->create([
'vote_type' => $voteType,
'user_id' => $userId,
'user_ip' => $userIp,
]);
$model->increment(Str::plural($voteType), 1);
}
}