Fix collaboration channel links

spec/invidious/videos/related_videos_extract_spec.cr

@@ -0,0 +1,51 @@
+require "../../parsers_helper.cr"
+
+Spectator.describe "parse_related_video" do
+  it "extracts the primary channel from collaboration bylines" do
+    related = JSON.parse(<<-JSON)
+      {
+        "videoId": "b2_vBMQmi3M",
+        "title": { "simpleText": "Alpha Beta Gamma" },
+        "shortBylineText": {
+          "runs": [{
+            "text": "Primary and Collaborator",
+            "navigationEndpoint": {
+              "showDialogCommand": {
+                "panelLoadingStrategy": {
+                  "inlineContent": {
+                    "dialogViewModel": {
+                      "customContent": {
+                        "listViewModel": {
+                          "listItems": [{
+                            "listItemViewModel": {
+                              "rendererContext": {
+                                "commandContext": {
+                                  "onTap": {
+                                    "innertubeCommand": {
+                                      "browseEndpoint": {
+                                        "browseId": "UClr4yKwH072yt1nUX29dQGg"
+                                      }
+                                    }
+                                  }
+                                }
+                              }
+                            }
+                          }]
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }]
+        }
+      }
+      JSON
+
+    parsed = Invidious::Videos::Parser.parse_related_video(related).not_nil!
+
+    expect(parsed["author"]).to eq("Primary and Collaborator")
+    expect(parsed["ucid"]).to eq("UClr4yKwH072yt1nUX29dQGg")
+  end
+end

src/invidious/yt_backend/extractors.cr

@@ -1141,7 +1141,13 @@ module HelperExtractors
   # Retrieves the ID required for querying the InnerTube browse endpoint.
   # Returns an empty string when it's unable to do so
   def self.get_browse_id(container)
-    return container.dig?("navigationEndpoint", "browseEndpoint", "browseId").try &.as_s || ""
+    return container.dig?("navigationEndpoint", "browseEndpoint", "browseId").try &.as_s ||
+      container.dig?(
+        "navigationEndpoint", "showDialogCommand", "panelLoadingStrategy",
+        "inlineContent", "dialogViewModel", "customContent", "listViewModel",
+        "listItems", 0, "listItemViewModel", "rendererContext", "commandContext",
+        "onTap", "innertubeCommand", "browseEndpoint", "browseId"
+      ).try &.as_s || ""
   end
 end