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@@ -0,0 +1,98 @@
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+<?php
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+
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+namespace App\Services;
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+
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+use Cache, Redis;
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+use App\{
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+ Notification,
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+ Profile
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+};
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+use App\Transformer\Api\NotificationTransformer;
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+use League\Fractal;
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+use League\Fractal\Serializer\ArraySerializer;
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+use League\Fractal\Pagination\IlluminatePaginatorAdapter;
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+
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+class NotificationService {
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+
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+ const CACHE_KEY = 'pf:services:notifications:ids:';
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+
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+ public static function get($id, $start = 0, $stop = 300)
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+ {
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+ $res = collect([]);
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+ $key = self::CACHE_KEY . $id;
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+ $stop = $stop > 300 ? 300 : $stop;
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+ $ids = Redis::zrangebyscore($key, $start, $stop);
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+ if(empty($ids)) {
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+ $ids = self::coldGet($id, $start, $stop);
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+ }
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+ foreach($ids as $id) {
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+ $res->push(self::getNotification($id));
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+ }
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+ return $res;
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+ }
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+
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+ public static function coldGet($id, $start = 0, $stop = 300)
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+ {
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+ $stop = $stop > 300 ? 300 : $stop;
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+ $ids = Notification::whereProfileId($id)
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+ ->latest()
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+ ->skip($start)
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+ ->take($stop)
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+ ->pluck('id');
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+ foreach($ids as $key) {
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+ self::set($id, $key);
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+ }
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+ return $ids;
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+ }
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+
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+ public static function set($id, $val)
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+ {
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+ return Redis::zadd(self::CACHE_KEY . $id, $val, $val);
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+ }
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+
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+ public static function del($id, $val)
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+ {
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+ return Redis::zrem(self::CACHE_KEY . $id, $val);
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+ }
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+
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+ public static function add($id, $val)
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+ {
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+ return self::set($id, $val);
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+ }
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+
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+ public static function rem($id, $val)
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+ {
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+ return self::del($id, $val);
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+ }
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+
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+ public static function count($id)
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+ {
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+ return Redis::zcount(self::CACHE_KEY . $id, '-inf', '+inf');
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+ }
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+
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+ public static function getNotification($id)
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+ {
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+ return Cache::remember('service:notification:'.$id, now()->addDays(7), function() use($id) {
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+ $n = Notification::findOrFail($id);
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+ $fractal = new Fractal\Manager();
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+ $fractal->setSerializer(new ArraySerializer());
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+ $resource = new Fractal\Resource\Item($n, new NotificationTransformer());
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+ return $fractal->createData($resource)->toArray();
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+ });
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+ }
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+
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+ public static function warmCache($id, $stop = 100, $force = false)
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+ {
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+ if(self::count($id) == 0 || $force == true) {
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+ $ids = Notification::whereProfileId($id)
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+ ->latest()
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+ ->limit($stop)
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+ ->pluck('id');
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+ foreach($ids as $key) {
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+ self::set($id, $key);
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+ }
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+ return 1;
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+ }
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+ return 0;
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+ }
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+}
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