From 96a6c063f23ed7a7165c6c23b26ed1a1508c1b96 Mon Sep 17 00:00:00 2001
From: Daniel Supernault <danielsupernault@gmail.com>
Date: Wed, 4 Dec 2019 19:47:00 -0700
Subject: [PATCH] Update FollowerService

---
 app/Services/FollowerService.php | 45 ++++++++++++++++++++------------
 1 file changed, 29 insertions(+), 16 deletions(-)

diff --git a/app/Services/FollowerService.php b/app/Services/FollowerService.php
index 4c082611..3a7120ef 100644
--- a/app/Services/FollowerService.php
+++ b/app/Services/FollowerService.php
@@ -12,8 +12,8 @@ use App\{
 class FollowerService {
 
 	protected $profile;
-	protected $follower_prefix;
-	protected $following_prefix;
+	static $follower_prefix = 'px:profile:followers-v1.3:';
+	static $following_prefix = 'px:profile:following-v1.3:';
 
 	public static function build()
 	{
@@ -23,35 +23,48 @@ class FollowerService {
 	public function profile(Profile $profile)
 	{
 		$this->profile = $profile;
-		$this->follower_prefix = config('cache.prefix').':profile:followers:'.$profile->id;
-		$this->following_prefix = config('cache.prefix').':profile:following:'.$profile->id;
+		self::$follower_prefix .= $profile->id;
+		self::$following_prefix .= $profile->id;
 		return $this;
 	}
 
-	public function followers($limit = 100, $offset = 0)
+	public function followers($limit = 100, $offset = 1)
 	{
-		if(Redis::llen($this->follower_prefix) == 0) {
-			$followers = $this->profile->followers;
+		if(Redis::zcard(self::$follower_prefix) == 0) {
+			$followers = $this->profile->followers()->pluck('profile_id');
 			$followers->map(function($i) {
-				Redis::lpush($this->follower_prefix, $i->id);
+				Redis::zadd(self::$follower_prefix, $i, $i);
 			});
-			return $followers;
+			return Redis::zrevrange(self::$follower_prefix, $offset, $limit);
 		} else {
-			return Redis::lrange($this->follower_prefix, $offset, $limit);
+			return Redis::zrevrange(self::$follower_prefix, $offset, $limit);
 		}
 	}
 
 
-	public function following($limit = 100, $offset = 0)
+	public function following($limit = 100, $offset = 1)
 	{
-		if(Redis::llen($this->following_prefix) == 0) {
-			$following = $this->profile->following;
+		if(Redis::zcard(self::$following_prefix) == 0) {
+			$following = $this->profile->following()->pluck('following_id');
 			$following->map(function($i) {
-				Redis::lpush($this->following_prefix, $i->id);
+				Redis::zadd(self::$following_prefix, $i, $i);
 			});
-			return $following;
+			return Redis::zrevrange(self::$following_prefix, $offset, $limit);
 		} else {
-			return Redis::lrange($this->following_prefix, $offset, $limit);
+			return Redis::zrevrange(self::$following_prefix, $offset, $limit);
+		}
+	}
+
+	public static function follows(string $actor, string $target)
+	{
+		$key = self::$follower_prefix . $target;
+		if(Redis::zcard($key) == 0) {
+			$p = Profile::findOrFail($target);
+			self::build()->profile($p)->followers(1);
+			self::build()->profile($p)->following(1);
+			return (bool) Redis::zrank($key, $actor);
+		} else {
+			return (bool) Redis::zrank($key, $actor);
 		}
 	}