Add option to redirect homepage to subscription feed

src/invidious.cr

@@ -258,6 +258,14 @@ before_all do |env|
 end
 
 get "/" do |env|
+  user = env.get? "user"
+  if user
+    user = user.as(User)
+    if user.preferences.redirect_feed
+      env.redirect "/feed/subscriptions"
+    end
+  end
+
   templated "index"
 end
 
@@ -1689,6 +1697,10 @@ post "/preferences" do |env|
     comments = env.params.body["comments"]?
     comments ||= "youtube"
 
+    redirect_feed = env.params.body["redirect_feed"]?.try &.as(String)
+    redirect_feed ||= "off"
+    redirect_feed = redirect_feed == "on"
+
     dark_mode = env.params.body["dark_mode"]?.try &.as(String)
     dark_mode ||= "off"
     dark_mode = dark_mode == "on"
@@ -1714,6 +1726,7 @@ post "/preferences" do |env|
       "quality"       => quality,
       "volume"        => volume,
       "comments"      => comments,
+      "redirect_feed" => redirect_feed,
       "dark_mode"     => dark_mode,
       "thin_mode"     => thin_mode,
       "max_results"   => max_results,

src/invidious/helpers.cr

@@ -163,6 +163,11 @@ class Preferences
       nilable: true,
       default: "youtube",
     },
+    redirect_feed: {
+      type:    Bool,
+      nilable: true,
+      default: false,
+    },
     dark_mode: Bool,
     thin_mode: {
       type:    Bool,

src/invidious/views/preferences.ecr

@@ -68,6 +68,11 @@ function update_value(element) {
             </div>
 
             <legend>Subscription preferences</legend>
+            <div class="pure-control-group">
+                <label for="redirect_feed">Redirect homepage to feed: </label>
+                <input name="redirect_feed" id="redirect_feed" type="checkbox" <% if user.preferences.redirect_feed %>checked<% end %>>
+            </div>
+
             <div class="pure-control-group">
                 <label for="max_results">Number of videos shown in feed: </label>
                 <input name="max_results" id="max_results" type="number" value="<%= user.preferences.max_results %>">