forked from mirror/pixelfed
117 lines
3 KiB
PHP
117 lines
3 KiB
PHP
<?php
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namespace App\Services;
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use Illuminate\Support\Facades\Redis;
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use Cache;
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use DB;
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use App\{
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Follower,
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Profile,
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User
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};
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class FollowerService
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{
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const CACHE_KEY = 'pf:services:followers:';
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const FOLLOWING_KEY = 'pf:services:follow:following:id:';
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const FOLLOWERS_KEY = 'pf:services:follow:followers:id:';
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public static function add($actor, $target)
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{
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RelationshipService::refresh($actor, $target);
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Redis::zadd(self::FOLLOWING_KEY . $actor, $target, $target);
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Redis::zadd(self::FOLLOWERS_KEY . $target, $actor, $actor);
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}
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public static function remove($actor, $target)
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{
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RelationshipService::refresh($actor, $target);
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Redis::zrem(self::FOLLOWING_KEY . $actor, $target);
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Redis::zrem(self::FOLLOWERS_KEY . $target, $actor);
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Cache::forget('pf:services:follow:audience:' . $actor);
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Cache::forget('pf:services:follow:audience:' . $target);
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}
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public static function followers($id, $start = 0, $stop = 10)
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{
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return Redis::zrange(self::FOLLOWERS_KEY . $id, $start, $stop);
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}
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public static function following($id, $start = 0, $stop = 10)
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{
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return Redis::zrange(self::FOLLOWING_KEY . $id, $start, $stop);
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}
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public static function follows(string $actor, string $target)
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{
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return Follower::whereProfileId($actor)->whereFollowingId($target)->exists();
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}
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public static function audience($profile, $scope = null)
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{
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return (new self)->getAudienceInboxes($profile, $scope);
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}
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public static function softwareAudience($profile, $software = 'pixelfed')
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{
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return collect(self::audience($profile))
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->filter(function($inbox) use($software) {
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$domain = parse_url($inbox, PHP_URL_HOST);
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if(!$domain) {
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return false;
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}
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return InstanceService::software($domain) === strtolower($software);
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})
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->unique()
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->values()
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->toArray();
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}
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protected function getAudienceInboxes($pid, $scope = null)
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{
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$key = 'pf:services:follow:audience:' . $pid;
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return Cache::remember($key, 86400, function() use($pid) {
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$profile = Profile::find($pid);
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if(!$profile) {
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return [];
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}
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return $profile
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->followers()
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->whereLocalProfile(false)
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->get()
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->map(function($follow) {
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return $follow->sharedInbox ?? $follow->inbox_url;
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})
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->unique()
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->values()
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->toArray();
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});
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}
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public static function mutualCount($pid, $mid)
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{
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return Cache::remember(self::CACHE_KEY . ':mutualcount:' . $pid . ':' . $mid, 3600, function() use($pid, $mid) {
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return DB::table('followers as u')
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->join('followers as s', 'u.following_id', '=', 's.following_id')
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->where('s.profile_id', $mid)
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->where('u.profile_id', $pid)
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->count();
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});
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}
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public static function mutualIds($pid, $mid, $limit = 3)
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{
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$key = self::CACHE_KEY . ':mutualids:' . $pid . ':' . $mid . ':limit_' . $limit;
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return Cache::remember($key, 3600, function() use($pid, $mid, $limit) {
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return DB::table('followers as u')
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->join('followers as s', 'u.following_id', '=', 's.following_id')
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->where('s.profile_id', $mid)
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->where('u.profile_id', $pid)
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->limit($limit)
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->pluck('s.following_id')
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->toArray();
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});
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}
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}
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