fix(channel): new rich grid renderer continuation format

src/client/pagination.rs

@@ -53,14 +53,20 @@ impl<T: TryFrom<YouTubeItem>> MapResponse<Paginator<T>> for response::Continuati
         lang: crate::param::Language,
         _deobf: Option<&crate::deobfuscate::Deobfuscator>,
     ) -> Result<MapResult<Paginator<T>>, ExtractionError> {
-        let mut actions = self.on_response_received_actions;
-        let items = actions
-            .try_swap_remove(0)
+        let items = self
+            .on_response_received_actions
+            .and_then(|mut actions| {
+                actions
+                    .try_swap_remove(0)
+                    .map(|action| action.append_continuation_items_action.continuation_items)
+            })
+            .or_else(|| {
+                self.continuation_contents
+                    .map(|contents| contents.rich_grid_continuation.contents)
+            })
             .ok_or(ExtractionError::InvalidData(Cow::Borrowed(
-                "no item section renderer",
-            )))?
-            .append_continuation_items_action
-            .continuation_items;
+                "no continuation items",
+            )))?;
 
         let mut mapper = response::YouTubeListMapper::<YouTubeItem>::new(lang);
         mapper.map_response(items);

src/client/response/mod.rs

@@ -140,6 +140,12 @@ pub(crate) struct AlertRenderer {
     pub text: String,
 }
 
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub(crate) struct ResponseContext {
+    pub visitor_data: Option<String>,
+}
+
 // CONTINUATION
 
 #[serde_as]
@@ -153,8 +159,12 @@ pub(crate) struct Continuation {
         alias = "onResponseReceivedCommands",
         alias = "onResponseReceivedEndpoints"
     )]
-    #[serde_as(as = "VecSkipError<_>")]
-    pub on_response_received_actions: Vec<ContinuationActionWrap>,
+    #[serde_as(as = "Option<VecSkipError<_>>")]
+    pub on_response_received_actions: Option<Vec<ContinuationActionWrap>>,
+    /// Used for channel video rich grid renderer
+    ///
+    /// A/B test seen on 19.10.2022
+    pub continuation_contents: Option<RichGridContinuationContents>,
 }
 
 #[derive(Debug, Deserialize)]
@@ -173,8 +183,16 @@ pub(crate) struct ContinuationAction {
 
 #[derive(Debug, Deserialize)]
 #[serde(rename_all = "camelCase")]
-pub(crate) struct ResponseContext {
-    pub visitor_data: Option<String>,
+pub(crate) struct RichGridContinuationContents {
+    pub rich_grid_continuation: RichGridContinuation,
+}
+
+#[serde_as]
+#[derive(Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub(crate) struct RichGridContinuation {
+    #[serde_as(as = "VecLogError<_>")]
+    pub contents: MapResult<Vec<YouTubeListItem>>,
 }
 
 // YouTube Music

src/client/response/video_details.rs

@@ -66,8 +66,8 @@ pub(crate) struct VideoResultsWrap {
 #[derive(Debug, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub(crate) struct VideoResults {
-    #[serde_as(as = "VecLogError<_>")]
-    pub contents: MapResult<Vec<VideoResultsItem>>,
+    #[serde_as(as = "Option<VecLogError<_>>")]
+    pub contents: Option<MapResult<Vec<VideoResultsItem>>>,
 }
 
 /// Video metadata item

src/client/video_details.rs

@@ -102,7 +102,10 @@ impl MapResponse<VideoDetails> for response::VideoDetails {
             .two_column_watch_next_results
             .results
             .results
-            .contents;
+            .contents
+            .ok_or(ExtractionError::ContentUnavailable(Cow::Borrowed(
+                "Video not found",
+            )))?;
         warnings.append(&mut primary_results.warnings);
 
         let mut primary_info = None;