Add 'paid' and 'premium' flags to API

src/invidious/helpers/helpers.cr

@@ -358,6 +358,18 @@ def extract_items(nodeset, ucid = nil)
         live_now = false
       end
 
+      if node.xpath_node(%q(.//span[text()="Premium"]))
+        premium = true
+      else
+        premium = false
+      end
+
+      if node.xpath_node(%q(.//span[contains(text(), "Get YouTube Premium")]))
+        paid = true
+      else
+        paid = false
+      end
+
       items << SearchVideo.new(
         title,
         id,
@@ -368,7 +380,9 @@ def extract_items(nodeset, ucid = nil)
         description,
         description_html,
         length_seconds,
-        live_now
+        live_now,
+        paid,
+        premium
       )
     end
   end

src/invidious/search.cr

@@ -10,6 +10,8 @@ class SearchVideo
     description_html: String,
     length_seconds:   Int32,
     live_now:         Bool,
+    paid:             Bool,
+    premium:          Bool,
   })
 end
 

src/invidious/videos.cr

@@ -407,6 +407,23 @@ class Video
     return @player_json.not_nil!
   end
 
+  def paid
+    reason = self.player_response["playabilityStatus"]?.try &.["reason"]?
+
+    if reason == "This video requires payment to watch."
+      paid = true
+    else
+      paid = false
+    end
+
+    return paid
+  end
+
+  def premium
+    premium = self.player_response.to_s.includes? "Get YouTube without the ads."
+    return premium
+  end
+
   def captions
     captions = [] of Caption
     if player_response["captions"]?