pixelfed/app/Services/LikeService.php

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<?php
namespace App\Services;
use App\Util\ActivityPub\Helpers;
use Illuminate\Support\Facades\Redis;
use App\Like;
class LikeService {
const CACHE_KEY = 'pf:services:likes:ids:';
public static function getUser($profile_id)
{
return self::get($profile_id);
}
protected static function get($profile_id)
{
$key = self::CACHE_KEY . $profile_id;
if(Redis::zcard($key) == 0) {
self::warmCache($profile_id);
} else {
return Redis::zrevrange($key, 0, 40);
}
}
protected static function set($profile_id, $status_id)
{
$key = self::CACHE_KEY . $profile_id;
Redis::zadd($key, $status_id, $status_id);
}
public static function warmCache($profile_id)
{
Like::select('id', 'profile_id', 'status_id')
->whereProfileId($profile_id)
->latest()
->get()
->each(function($like) use ($profile_id) {
self::set($profile_id, $like->status_id);
});
}
public static function liked($profileId, $statusId)
{
$key = self::CACHE_KEY . $profileId;
return (bool) Redis::zrank($key, $statusId);
}
public static function likedBy($status)
{
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$empty = [
'username' => null,
'others' => false
];
if(!$status) {
return $empty;
}
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if(!$status->likes_count) {
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return $empty;
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}
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$like = Like::whereStatusId($status->id)->first();
if(!$like) {
return $empty;
}
$id = $like->profile_id;
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return [
'username' => ProfileService::get($id)['username'],
'others' => $status->likes_count >= 5,
];
}
}