From 6af842eb3e615b1e93add98da58919dd430d1479 Mon Sep 17 00:00:00 2001
From: Daniel Supernault <danielsupernault@gmail.com>
Date: Sat, 26 Feb 2022 22:41:57 -0700
Subject: [PATCH] Update LikeService, improve caching logic and add profile id
 to likedBy method to fix #3271

---
 app/Services/LikeService.php | 63 ++++++++++++++++--------------------
 1 file changed, 28 insertions(+), 35 deletions(-)

diff --git a/app/Services/LikeService.php b/app/Services/LikeService.php
index de2ca1895..0046f2f1a 100644
--- a/app/Services/LikeService.php
+++ b/app/Services/LikeService.php
@@ -14,22 +14,23 @@ class LikeService {
 	public static function add($profileId, $statusId)
 	{
 		$key = self::CACHE_KEY . $profileId . ':' . $statusId;
-		$ttl = now()->addHours(2);
-		return Cache::put($key, true, $ttl);
+		Cache::increment('pf:services:likes:count:'.$statusId);
+		Cache::forget('pf:services:likes:liked_by:'.$statusId);
+		return Cache::put($key, true, 86400);
 	}
 
 	public static function remove($profileId, $statusId)
 	{
 		$key = self::CACHE_KEY . $profileId . ':' . $statusId;
-		$ttl = now()->addHours(2);
-		return Cache::put($key, false, $ttl);
+		Cache::decrement('pf:services:likes:count:'.$statusId);
+		Cache::forget('pf:services:likes:liked_by:'.$statusId);
+		return Cache::put($key, false, 86400);
 	}
 
 	public static function liked($profileId, $statusId)
 	{
 		$key = self::CACHE_KEY . $profileId . ':' . $statusId;
-		$ttl = now()->addMinutes(30);
-		return Cache::remember($key, $ttl, function() use($profileId, $statusId) {
+		return Cache::remember($key, 86400, function() use($profileId, $statusId) {
 			return Like::whereProfileId($profileId)->whereStatusId($statusId)->exists();
 		});
 	}
@@ -45,44 +46,36 @@ class LikeService {
 			return $empty;
 		}
 
-		if(!$status->likes_count) {
-			return $empty;
-		}
-		$user = request()->user();
+		$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);
+			$profileUrl = "/i/web/profile/{$profile['id']}";
+			$res = [
+				'id' => (string) $profile['id'],
+				'username' => $profile['username'],
+				'url' => $profileUrl,
+				'others' => $status->likes_count >= 3,
+			];
+			return $res;
+		});
 
-		if($user) {
-			$like = Like::whereStatusId($status->id)
-			->where('profile_id', '!=', $user->profile_id)
-			->first();
-		} else {
-			$like = Like::whereStatusId($status->id)
-			->first();
-		}
-
-		if(!$like) {
+		if(!isset($res['id']) || !isset($res['url'])) {
 			return $empty;
 		}
 
-		$id = $like->profile_id;
-
-		$profile = ProfileService::get($id);
-		$profileUrl = $profile['local'] ? $profile['url'] : '/i/web/profile/_/' . $profile['id'];
-		$res = [
-			'username' => $profile['username'],
-			'url' => $profileUrl,
-			'others' => $status->likes_count >= 3,
-		];
-
-		if(request()->user() && request()->user()->profile_id == $status->profile_id) {
-			$res['total_count'] = ($status->likes_count - 1);
-			$res['total_count_pretty'] = number_format($res['total_count']);
-		}
+		$res['total_count'] = ($status->likes_count - 1);
+		$res['total_count_pretty'] = number_format($res['total_count']);
 
 		return $res;
 	}
 
 	public static function count($id)
 	{
-		return Like::whereStatusId($id)->count();
+		return Cache::get('pf:services:likes:count:'.$id, 0);
 	}
+
 }