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72 lines
1.7 KiB
PHP
72 lines
1.7 KiB
PHP
<?php
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namespace App\Services;
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use Illuminate\Support\Facades\Redis;
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use App\{
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Follower,
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Profile
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};
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class FollowerService {
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protected $profile;
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public static $follower_prefix = 'px:profile:followers-v1.3:';
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public static $following_prefix = 'px:profile:following-v1.3:';
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public static function build()
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{
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return new self();
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}
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public function profile(Profile $profile)
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{
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$this->profile = $profile;
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self::$follower_prefix .= $profile->id;
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self::$following_prefix .= $profile->id;
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return $this;
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}
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public function followers($limit = 100, $offset = 1)
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{
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if(Redis::zcard(self::$follower_prefix) == 0) {
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$followers = $this->profile->followers()->pluck('profile_id');
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$followers->map(function($i) {
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Redis::zadd(self::$follower_prefix, $i, $i);
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});
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return Redis::zrevrange(self::$follower_prefix, $offset, $limit);
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} else {
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return Redis::zrevrange(self::$follower_prefix, $offset, $limit);
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}
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}
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public function following($limit = 100, $offset = 1)
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{
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if(Redis::zcard(self::$following_prefix) == 0) {
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$following = $this->profile->following()->pluck('following_id');
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$following->map(function($i) {
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Redis::zadd(self::$following_prefix, $i, $i);
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});
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return Redis::zrevrange(self::$following_prefix, $offset, $limit);
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} else {
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return Redis::zrevrange(self::$following_prefix, $offset, $limit);
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}
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}
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public static function follows(string $actor, string $target)
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{
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$key = self::$follower_prefix . $target;
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if(Redis::zcard($key) == 0) {
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$p = Profile::findOrFail($target);
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self::build()->profile($p)->followers(1);
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self::build()->profile($p)->following(1);
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return (bool) Redis::zrank($key, $actor);
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} else {
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return (bool) Redis::zrank($key, $actor);
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}
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}
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}
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