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pixelfed/app/Services/LikeService.php

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<?php
namespace App\Services;
use App\Util\ActivityPub\Helpers;
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use Illuminate\Support\Facades\Cache;
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use Illuminate\Support\Facades\Redis;
use App\Like;
class LikeService {
const CACHE_KEY = 'pf:services:likes:ids:';
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const CACHE_SET_KEY = 'pf:services:likes:set:';
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public static function add($profileId, $statusId)
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{
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$key = self::CACHE_KEY . $profileId . ':' . $statusId;
Cache::increment('pf:services:likes:count:'.$statusId);
Cache::forget('pf:services:likes:liked_by:'.$statusId);
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self::setAdd($profileId, $statusId);
return Cache::put($key, true, 86400);
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}
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public static function setAdd($profileId, $statusId)
{
if(self::setCount($profileId) > 400) {
if(config('database.redis.client') === 'phpredis') {
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Redis::zpopmin(self::CACHE_SET_KEY . $profileId);
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}
}
return Redis::zadd(self::CACHE_SET_KEY . $profileId, $statusId, $statusId);
}
public static function setCount($id)
{
return Redis::zcard(self::CACHE_SET_KEY . $id);
}
public static function setRem($profileId, $val)
{
return Redis::zrem(self::CACHE_SET_KEY . $profileId, $val);
}
public static function get($profileId, $start = 0, $stop = 10)
{
if($stop > 100) {
$stop = 100;
}
return Redis::zrevrange(self::CACHE_SET_KEY . $profileId, $start, $stop);
}
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public static function remove($profileId, $statusId)
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{
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$key = self::CACHE_KEY . $profileId . ':' . $statusId;
Cache::decrement('pf:services:likes:count:'.$statusId);
Cache::forget('pf:services:likes:liked_by:'.$statusId);
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self::setRem($profileId, $statusId);
return Cache::put($key, false, 86400);
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}
public static function liked($profileId, $statusId)
{
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$key = self::CACHE_KEY . $profileId . ':' . $statusId;
return Cache::remember($key, 86400, function() use($profileId, $statusId) {
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return Like::whereProfileId($profileId)->whereStatusId($statusId)->exists();
});
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}
public static function likedBy($status)
{
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$empty = [
'username' => null,
'others' => false
];
if(!$status) {
return $empty;
}
$res = Cache::remember('pf:services:likes:liked_by:' . $status->id, 86400, function() use($status, $empty) {
$like = Like::whereStatusId($status->id)->first();
if(!$like) {
return $empty;
}
$id = $like->profile_id;
$profile = ProfileService::get($id, true);
if(!$profile) {
return [];
}
$profileUrl = "/i/web/profile/{$profile['id']}";
$res = [
'id' => (string) $profile['id'],
'username' => $profile['username'],
'url' => $profileUrl,
'others' => $status->likes_count >= 3,
];
return $res;
});
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if(!isset($res['id']) || !isset($res['url'])) {
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return $empty;
}
$res['total_count'] = ($status->likes_count - 1);
$res['total_count_pretty'] = number_format($res['total_count']);
return $res;
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}
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public static function count($id)
{
return Cache::get('pf:services:likes:count:'.$id, 0);
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}
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}