From c099a5ad2e42616ee96a5da41cf27083606ac692 Mon Sep 17 00:00:00 2001
From: Omar Roth <omarroth@hotmail.com>
Date: Fri, 15 Feb 2019 17:13:52 -0600
Subject: [PATCH] Speed up manage_subscriptions

---
 src/invidious.cr | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/src/invidious.cr b/src/invidious.cr
index 285d4394..93f63dfe 100644
--- a/src/invidious.cr
+++ b/src/invidious.cr
@@ -1373,12 +1373,7 @@ get "/subscription_manager" do |env|
   format = env.params.query["format"]?
   format ||= "rss"
 
-  subscriptions = [] of InvidiousChannel
-  user.subscriptions.each do |ucid|
-    if channel = PG_DB.query_one?("SELECT * FROM channels WHERE id = $1", ucid, as: InvidiousChannel)
-      subscriptions << channel
-    end
-  end
+  subscriptions = PG_DB.query_all("SELECT * FROM channels WHERE id = ANY('{#{user.subscriptions.join(",")}}')", as: InvidiousChannel)
   subscriptions.sort_by! { |channel| channel.author.downcase }
 
   if action_takeout