feat: add preference to set default trending page

Closes https://git.nadeko.net/Fijxu/invidious/issues/212

Enjoy xCbl6YaK4PEX6d9g6m26YMdHJtQgJ

locales/en-US.json

@@ -124,6 +124,7 @@
     "preferences_sort_label": "Sort videos by: ",
     "preferences_hidden_channels": "Hidden channels",
     "preferences_hidden_channels_label": "(Experimental) Channel ID list separated by ENTER key. This only hides channels from the popular page for now. You can get the ID of the channel clicking on the channel and copying the part that starts with 'UC' in the channel link. Example: /channel/<b>UCw-aR42z5gUcarpPGN5OKfA</b>",
+    "preferences_default_trending_type": "Default trending page: ",
     "published": "published",
     "published - reverse": "published - reverse",
     "alphabetically": "alphabetically",

locales/es.json

@@ -80,6 +80,7 @@
     "preferences_sort_label": "Ordenar los videos por: ",
     "preferences_hidden_channels": "Canales ocultos",
     "preferences_hidden_channels_label": "(Experimental) Lista de IDs de canales separados por la tecla ENTER. Por ahora, esto solo oculta canales de la pagina popular. Puedes conseguir la ID del canal entrando al canal y copiando la parte que empieza por 'UC' en el enlace. Ejemplo: /channel/<b>UCw-aR42z5gUcarpPGN5OKfA</b>",
+    "preferences_default_trending_type": "Página de tendencias por defecto: ",
     "published": "fecha de publicación",
     "published - reverse": "fecha de publicación: orden inverso",
     "alphabetically": "alfabéticamente",

src/invidious/config.cr

@@ -55,6 +55,8 @@ struct ConfigPreferences
   property enable_dearrow : Bool = false
   @[YAML::Field(ignore: true)]
   property hidden_channels : Array(String)? = nil
+  @[YAML::Field(ignore: true)]
+  property default_trending_type : Invidious::Routes::Feeds::TrendingTypes = Invidious::Routes::Feeds::TrendingTypes::Default
 
   def to_tuple
     {% begin %}

src/invidious/routes/feeds.cr

@@ -1,6 +1,13 @@
 {% skip_file if flag?(:api_only) %}
 
 module Invidious::Routes::Feeds
+  enum TrendingTypes
+    Default
+    Music
+    Gaming
+    Movies
+  end
+
   def self.view_all_playlists_redirect(env)
     env.redirect "/feed/playlists"
   end
@@ -44,13 +51,14 @@ 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"
+    trending_type ||= preferences.default_trending_type.to_s
 
     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/preferences.cr

@@ -168,6 +168,9 @@ module Invidious::Routes::PreferencesRoute
       delete.reverse_each { |i| hidden_channels.delete_at(i) }
     end
 
+    default_trending_type = env.params.body["default_trending_type"]?.try &.as(String)
+    default_trending_type ||= Invidious::Routes::Feeds::TrendingTypes::Default
+
     # Convert to JSON and back again to take advantage of converters used for compatibility
     preferences = Preferences.from_json({
       annotations:                 annotations,
@@ -205,6 +208,7 @@ module Invidious::Routes::PreferencesRoute
       show_nick:                   show_nick,
       save_player_pos:             save_player_pos,
       hidden_channels:             hidden_channels,
+      default_trending_type:       default_trending_type,
     }.to_json)
 
     if user = env.get? "user"

src/invidious/user/preferences.cr

@@ -57,6 +57,7 @@ struct Preferences
   property volume : Int32 = CONFIG.default_user_preferences.volume
   property save_player_pos : Bool = CONFIG.default_user_preferences.save_player_pos
   property hidden_channels : Array(String)? = nil
+  property default_trending_type : Invidious::Routes::Feeds::TrendingTypes = Invidious::Routes::Feeds::TrendingTypes::Default
 
   module BoolToString
     def self.to_json(value : String, json : JSON::Builder)

src/invidious/views/feeds/trending.ecr

@@ -21,7 +21,9 @@
     </div>
     <div class="pure-u-1-3">
         <div class="pure-g" style="text-align:right">
-            <% {"Default", "Music", "Gaming", "Movies"}.each do |option| %>
+            <% TrendingTypes.each do |option|
+                option = option.to_s
+            %>
                 <div class="pure-u-1 pure-md-1-3">
                     <% if trending_type == option %>
                         <b><%= translate(locale, option) %></b>

src/invidious/views/user/preferences.ecr

@@ -204,6 +204,17 @@
                 </div>
             <% end %>
 
+            <div class="pure-control-group">
+                <label for="default_trending_type"><%= translate(locale, "preferences_default_trending_type") %></label>
+                <select name="default_trending_type" id="default_trending_type">
+                    <% Invidious::Routes::Feeds::TrendingTypes.each do |option|
+                        option = option.to_s
+                    %>
+                        <option value="<%= option %>" <% if preferences.default_trending_type.to_s == option %> selected <% end %>><%= translate(locale, option) %></option>
+                    <% end %>
+                </select>
+            </div>
+
             <legend><%= translate(locale, "preferences_category_misc") %></legend>
 
             <div class="pure-control-group">