Make feat. chan page URL to compatible with yt

src/invidious.cr

@@ -313,7 +313,6 @@ Invidious::Routing.get "/channel/:ucid/videos", Invidious::Routes::Channels, :vi
 Invidious::Routing.get "/channel/:ucid/playlists", Invidious::Routes::Channels, :playlists
 Invidious::Routing.get "/channel/:ucid/community", Invidious::Routes::Channels, :community
 Invidious::Routing.get "/channel/:ucid/channels", Invidious::Routes::Channels, :channels
-Invidious::Routing.get "/channel/:ucid/channels/:param", Invidious::Routes::Channels, :featured_channel_category
 Invidious::Routing.get "/channel/:ucid/about", Invidious::Routes::Channels, :about
 
 Invidious::Routing.get "/watch", Invidious::Routes::Watch, :handle

src/invidious/channels.cr

@@ -380,7 +380,9 @@ def fetch_channel_playlists(ucid, author, continuation, sort_by)
   return items, continuation
 end
 
-def fetch_channel_featured_channels(ucid, tab_data, params = nil, continuation = nil, query_title = nil)
+def fetch_channel_featured_channels(ucid, tab_data, view=nil, shelf_id=nil, continuation = nil, query_title = nil)
+  auxiliary_data = {} of String => String 
+
   if continuation.is_a?(String)
     initial_data = request_youtube_api_browse(continuation)
     items = extract_items(initial_data)
@@ -392,9 +394,14 @@ def fetch_channel_featured_channels(ucid, tab_data, params = nil, continuation =
       browse_endpoint_data: nil,
       continuation_token:   continuation_token,
       badges:               nil,
+      auxiliary_data:       auxiliary_data,
     })]
   else
-    if params.is_a?(String)
+    if view && shelf_id
+      auxiliary_data["view"] = view
+      auxiliary_data["shelf_id"] = shelf_id
+
+      params = produce_featured_channel_browse_param(view.to_i64, shelf_id.to_i64)
       initial_data = request_youtube_api_browse(ucid, params)
       continuation_token = fetch_continuation_token(initial_data)
     else
@@ -432,17 +439,19 @@ def fetch_channel_featured_channels(ucid, tab_data, params = nil, continuation =
         browse_endpoint_data: category.browse_endpoint_data,
         continuation_token:   continuation_token,
         badges:               nil,
+        auxiliary_data:       category.auxiliary_data,
       })
     end
 
     # If we don't have any categories we'll create one.
     if category_array.empty?
       return [Category.new({
-        title:                fallback_title, # If continuation contents is requested then the query_title has to be passed along.
+        title:                fallback_title,
         contents:             items,
         browse_endpoint_data: nil,
         continuation_token:   continuation_token,
         badges:               nil,
+        auxiliary_data:       auxiliary_data,
       })]
     end
 
@@ -450,6 +459,21 @@ def fetch_channel_featured_channels(ucid, tab_data, params = nil, continuation =
   end
 end
 
+def produce_featured_channel_browse_param(view : Int64, shelf_id : Int64)
+  object = {
+    "2:string" => "channels",
+    "4:varint" => view,
+    "14:varint" => shelf_id
+  }
+
+  browse_params = object.try { |i| Protodec::Any.cast_json(object) }
+    .try { |i| Protodec::Any.from_json(i) }
+    .try { |i| Base64.urlsafe_encode(i) }
+    .try { |i| URI.encode_www_form(i) }
+
+  return browse_params
+end
+
 def produce_channel_videos_continuation(ucid, page = 1, auto_generated = nil, sort_by = "newest", v2 = false)
   object = {
     "80226972:embedded" => {

src/invidious/helpers/extractors.cr

@@ -208,7 +208,6 @@ private class CategoryParser < ItemParser
   def parse(item_contents, author_fallback)
     # Title extraction is a bit complicated. There are two possible routes for it
     # as well as times when the title attribute just isn't sent by YT.
-
     title_container = item_contents["title"]? || ""
     if !title_container.is_a? String
       if title = title_container["simpleText"]?
@@ -220,6 +219,7 @@ private class CategoryParser < ItemParser
       title = ""
     end
 
+    auxiliary_data = {} of String => String 
     browse_endpoint = item_contents["endpoint"]?.try &.["browseEndpoint"] || nil
     browse_endpoint_data = ""
     category_type = 0 # 0: Video, 1: Channels, 2: Playlist/feed, 3: trending
@@ -236,7 +236,14 @@ private class CategoryParser < ItemParser
       # instead it uses the browseId parameter. So if there isn't a params value we can assume the
       # category is a playlist/feed
       if browse_endpoint["params"]?
-        browse_endpoint_data = browse_endpoint["params"].as_s
+        # However, even though the channel category type returns the browse endpoint param
+        # we're not going to be using it in order to preserve compatablity with Youtube.
+        # and for an URL that looks cleaner
+        url = item_contents["endpoint"]["commandMetadata"]["webCommandMetadata"]["url"]
+        url = URI.parse(url.as_s)
+        auxiliary_data["view"] = url.query_params["view"]
+        auxiliary_data["shelf_id"] = url.query_params["shelf_id"]
+        
         category_type = 1
       else
         browse_endpoint_data = browse_endpoint["browseId"].as_s
@@ -276,6 +283,7 @@ private class CategoryParser < ItemParser
       browse_endpoint_data: browse_endpoint_data,
       continuation_token:   nil,
       badges:               badges,
+      auxiliary_data:       auxiliary_data,
     })
   end
 end

src/invidious/helpers/invidiousitems.cr

@@ -237,6 +237,9 @@ class Category
   property continuation_token : String?
   property badges : Array(Tuple(String, String))?
 
+  # Data unique to only specific types of categories.
+  property auxiliary_data : Hash(String, String)
+
   def to_json(locale, json : JSON::Builder)
     json.object do
       json.field "title", self.title

src/invidious/routes/channels.cr

@@ -102,6 +102,12 @@ class Invidious::Routes::Channels < Invidious::Routes::BaseRoute
       return env.redirect "/channel/#{channel.ucid}"
     end
 
+    view = env.params.query["view"]?
+    shelf_id = env.params.query["shelf_id"]?
+    # Category title isn't returned when requesting a specific category or continuation data
+    # so we have it in through a url param
+    current_category_title = env.params.query["title"]?
+
     if continuation
       offset = env.params.query["offset"]?
       if offset
@@ -112,47 +118,27 @@ class Invidious::Routes::Channels < Invidious::Routes::BaseRoute
 
       # Previous continuation
       previous_continuation = env.params.query["previous"]?
-      # Category title is not returned when using a continuation token.
-      title = env.params.query["title"]?
 
-      featured_channel_categories = fetch_channel_featured_channels(ucid, channel.tabs["channels"], nil, continuation, title).not_nil!
+      featured_channel_categories = fetch_channel_featured_channels(ucid, channel.tabs["channels"], nil, nil, continuation, current_category_title).not_nil!
+    elsif view && shelf_id
+      offset = env.params.query["offset"]?
+      if offset
+        offset = offset.to_i
+      else
+        offset = 0
+      end
+
+      featured_channel_categories = fetch_channel_featured_channels(ucid, channel.tabs["channels"], view, shelf_id, continuation, current_category_title).not_nil!
     else
       previous_continuation = nil
-      category_param = nil
       offset = 0
-      title = nil
 
-      featured_channel_categories = fetch_channel_featured_channels(ucid, channel.tabs["channels"], nil, nil).not_nil!
+      featured_channel_categories = fetch_channel_featured_channels(ucid, channel.tabs["channels"], nil, nil, current_category_title).not_nil!
     end
 
     templated "channel/featured_channels", buffer_footer: true
   end
 
-  def featured_channel_category(env)
-    # Used to check when the initial page is reached and redirect to /channel/:ucid/channels/:param when zero
-    offset = env.params.query["offset"]?
-    category_param = env.params.url["param"]
-    if offset
-      offset = offset.to_i
-    else
-      offset = 0
-    end
-
-    data = self.fetch_basic_information(env)
-    if !data.is_a?(Tuple)
-      return data
-    end
-    locale, user, subscriptions, continuation, ucid, channel = data
-
-    # Previous continuation
-    previous_continuation = env.params.query["previous"]?
-    # Category title is not returned when using a continuation token.
-    title = env.params.query["title"]?
-
-    featured_channel_categories = fetch_channel_featured_channels(ucid, channel.tabs["channels"], category_param, continuation, title).not_nil!
-    templated "channel/featured_channels"
-  end
-
   def about(env)
     data = self.fetch_basic_information(env)
     if !data.is_a?(Tuple)

src/invidious/views/channel/featured_channels.ecr

@@ -14,8 +14,9 @@
                 <details open="">
                     <summary style="display: revert;">
                         <h3 class="category-heading">
-                            <% if (category_request_param = category.browse_endpoint_data).is_a?(String) %>
+                            <% if category.auxiliary_data.has_key?("view") %>
-                                <a href="/channel/<%=channel.ucid%>/channels/<%=HTML.escape(category_request_param)%>">
+                                <% category_url_param = "?view=#{category.auxiliary_data["view"]}&shelf_id=#{category.auxiliary_data["shelf_id"]}" %>
+                                <a href="/channel/<%=channel.ucid%>/channels<%=HTML.escape(category_url_param)%>">
                                     <%= category.title %>
                                 </a>
                             <%else%>
@@ -90,14 +91,15 @@
 </div>
 
 <% if !featured_channel_categories.empty? %>
+    <% base_url = "/channel/#{channel.ucid}/channels?view=#{view}&shelf_id=#{shelf_id}" %>
     <div class="pure-g h-box">
         <div class="pure-u-1 pure-u-lg-1-5">
             <% if previous_continuation %>
-                <a href="/channel/<%=channel.ucid%>/channels/<%=category_param%>?continuation=<%=HTML.escape(previous_continuation)%>&offset=<%=offset.not_nil!-1%>&title=<%=HTML.escape(title.not_nil!)%>">
+                <a href="<%= base_url %>&continuation=<%=HTML.escape(previous_continuation)%>&offset=<%=offset.not_nil!-1%>&title=<%=HTML.escape(current_category_title.not_nil!)%>">
                     <%= translate(locale, "Previous page") %>
                 </a>
             <% elsif (offset - 1) == 0 %>
-                <a href="/channel/<%=channel.ucid%>/channels/<%=category_param%>">
+                <a href="<%= base_url %>">
                     <%= translate(locale, "Previous page") %>
                 </a>
             <% end %>
@@ -105,15 +107,15 @@
         <div class="pure-u-1 pure-u-lg-3-5"></div>
         <div class="pure-u-1 pure-u-lg-1-5" style="text-align:right">
             <% if (next_cont_token = featured_channel_categories[0].continuation_token) %>
-                <% additional_url_param = ""%>
+                <% previous = ""%>
                 <% if continuation %>
-                    <% additional_url_param = "&previous=#{HTML.escape(continuation)}"%>
+                    <% previous = "&previous=#{HTML.escape(continuation)}"%>
                 <% end %> 
-                <% if !title %>
+                <% if !current_category_title %>
-                    <% title = featured_channel_categories[0].title %>
+                    <% current_category_title = featured_channel_categories[0].title %>
                 <% end %>
 
-                <a href="/channel/<%=channel.ucid%>/channels/<%=category_param%>?continuation=<%=HTML.escape(next_cont_token)%>&offset=<%=offset.not_nil!+1%>&title=<%=HTML.escape(title)%><%=additional_url_param%>">
+                <a href="<%= base_url %>&continuation=<%=HTML.escape(next_cont_token)%>&offset=<%=offset.not_nil!+1%>&title=<%=HTML.escape(current_category_title)%><%=previous%>">
                     <%= translate(locale, "Next page") %>
                 </a>
             <% end %>