From 468a4203ca223fba771688cafac247d41d6b210b Mon Sep 17 00:00:00 2001
From: Daniel Supernault <danielsupernault@gmail.com>
Date: Sun, 30 Jun 2019 22:27:27 -0600
Subject: [PATCH] Add StatusHashtagService

---
 app/Services/StatusHashtagService.php | 73 +++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 app/Services/StatusHashtagService.php

diff --git a/app/Services/StatusHashtagService.php b/app/Services/StatusHashtagService.php
new file mode 100644
index 000000000..0c5120726
--- /dev/null
+++ b/app/Services/StatusHashtagService.php
@@ -0,0 +1,73 @@
+<?php
+
+namespace App\Services;
+
+use Cache, Redis;
+use App\{Status, StatusHashtag};
+use App\Transformer\Api\StatusHashtagTransformer;
+use League\Fractal;
+use League\Fractal\Serializer\ArraySerializer;
+use League\Fractal\Pagination\IlluminatePaginatorAdapter;
+
+class StatusHashtagService {
+
+	const CACHE_KEY = 'pf:services:status-hashtag:collection:';
+
+	public static function get($id, $start = 0, $stop = 100)
+	{
+		$res = collect([]);
+		$key = self::CACHE_KEY . $id;
+		$stop = $stop > 2000 ? 2000 : $stop;
+		$ids = Redis::zrangebyscore($key, $start, $stop);
+		if(empty($ids)) {
+			$ids = self::coldGet($id, $start, $stop);
+		}
+		foreach($ids as $statusId) {
+			$res->push(self::getStatus($statusId, $id));
+		}
+		return $res;
+	}
+
+	public static function coldGet($id, $start = 0, $stop = 2000)
+	{
+		$stop = $stop > 2000 ? 2000 : $stop;
+		$ids = StatusHashtag::whereHashtagId($id)
+			->latest()
+			->skip($start)
+			->take($stop)
+			->pluck('status_id');
+		foreach($ids as $key) {
+			self::set($id, $key);
+		}
+		return $ids;
+	}
+
+	public static function set($key, $val)
+	{
+		return Redis::zadd(self::CACHE_KEY . $key, $val, $val);
+	}
+
+	public static function del($key)
+	{
+		return Redis::zrem(self::CACHE_KEY . $key, $val);
+	}
+
+	public static function count($id)
+	{
+		return Redis::zcount(self::CACHE_KEY . $id, '-inf', '+inf');
+	}
+
+	public static function getStatus($statusId, $hashtagId)
+	{
+		return Cache::remember('pf:services:status-hashtag:post:'.$statusId.':hashtag:'.$hashtagId, now()->addMonths(3), function() use($statusId, $hashtagId) {
+			$statusHashtag = StatusHashtag::with('profile', 'status', 'hashtag')
+				->whereStatusId($statusId)
+				->whereHashtagId($hashtagId)
+				->first();
+			$fractal = new Fractal\Manager();
+			$fractal->setSerializer(new ArraySerializer());
+			$resource = new Fractal\Resource\Item($statusHashtag, new StatusHashtagTransformer());
+			return $fractal->createData($resource)->toArray();
+		});
+	}
+}
\ No newline at end of file