chore: Store preferences in a variable when reused and rename prefs to preferences (#5450)

A little code cleanup on places where `preferences` is used more than one time and rename `prefs` to `preferences` to maintain consistency.

src/invidious/routes/channels.cr

@@ -264,11 +264,11 @@ module Invidious::Routes::Channels
     id = env.params.url["id"]
     ucid = env.params.query["ucid"]?
 
-    prefs = env.get("preferences").as(Preferences)
+    preferences = env.get("preferences").as(Preferences)
 
-    locale = prefs.locale
+    locale = preferences.locale
 
-    thin_mode = env.params.query["thin_mode"]? || prefs.thin_mode
+    thin_mode = env.params.query["thin_mode"]? || preferences.thin_mode
     thin_mode = thin_mode == "true"
 
     nojs = env.params.query["nojs"]?

src/invidious/routes/embed.cr

@@ -33,7 +33,8 @@ module Invidious::Routes::Embed
   end
 
   def self.show(env)
-    locale = env.get("preferences").as(Preferences).locale
+    preferences = env.get("preferences").as(Preferences)
+    locale = preferences.locale
     id = env.params.url["id"]
 
     plid = env.params.query["list"]?.try &.gsub(/[^a-zA-Z0-9_-]/, "")
@@ -45,8 +46,6 @@ module Invidious::Routes::Embed
       env.params.query.delete("playlist")
     end
 
-    preferences = env.get("preferences").as(Preferences)
-
     if id.includes?("%20") || id.includes?("+") || env.params.query.to_s.includes?("%20") || env.params.query.to_s.includes?("+")
       id = env.params.url["id"].gsub("%20", "").delete("+")
 

src/invidious/routes/feeds.cr

@@ -43,13 +43,14 @@ module Invidious::Routes::Feeds
   end
 
   def self.trending(env)
-    locale = env.get("preferences").as(Preferences).locale
+    preferences = env.get("preferences").as(Preferences)
+    locale = preferences.locale
 
     trending_type = env.params.query["type"]?
     trending_type ||= "Default"
 
     region = env.params.query["region"]?
-    region ||= env.get("preferences").as(Preferences).region
+    region ||= preferences.region
 
     begin
       trending, plid = fetch_trending(trending_type, region, locale)

src/invidious/routes/playlists.cr

@@ -225,10 +225,10 @@ module Invidious::Routes::Playlists
   end
 
   def self.add_playlist_items_page(env)
-    prefs = env.get("preferences").as(Preferences)
-    locale = prefs.locale
+    preferences = env.get("preferences").as(Preferences)
+    locale = preferences.locale
 
-    region = env.params.query["region"]? || prefs.region
+    region = env.params.query["region"]? || preferences.region
 
     user = env.get? "user"
     sid = env.get? "sid"

src/invidious/routes/preferences.cr

@@ -2,12 +2,11 @@
 
 module Invidious::Routes::PreferencesRoute
   def self.show(env)
-    locale = env.get("preferences").as(Preferences).locale
+    preferences = env.get("preferences").as(Preferences)
+    locale = preferences.locale
 
     referer = get_referer(env)
 
-    preferences = env.get("preferences").as(Preferences)
-
     templated "user/preferences"
   end
 

src/invidious/routes/search.cr

@@ -37,10 +37,10 @@ module Invidious::Routes::Search
   end
 
   def self.search(env)
-    prefs = env.get("preferences").as(Preferences)
-    locale = prefs.locale
+    preferences = env.get("preferences").as(Preferences)
+    locale = preferences.locale
 
-    region = env.params.query["region"]? || prefs.region
+    region = env.params.query["region"]? || preferences.region
 
     query = Invidious::Search::Query.new(env.params.query, :regular, region)
 

src/invidious/routes/watch.cr

@@ -2,7 +2,8 @@
 
 module Invidious::Routes::Watch
   def self.handle(env)
-    locale = env.get("preferences").as(Preferences).locale
+    preferences = env.get("preferences").as(Preferences)
+    locale = preferences.locale
     region = env.params.query["region"]?
 
     if env.params.query.to_s.includes?("%20") || env.params.query.to_s.includes?("+")
@@ -38,8 +39,6 @@ module Invidious::Routes::Watch
     nojs ||= "0"
     nojs = nojs == "1"
 
-    preferences = env.get("preferences").as(Preferences)
-
     user = env.get?("user").try &.as(User)
     if user
       subscriptions = user.subscriptions