Raise exception if playability not ok, also handle missing related videos

Author: matthewmcgarvey

src/invidious/videos.cr

@@ -881,11 +881,13 @@ def extract_video_info(video_id : String, proxy_region : String? = nil, context_
 
   player_response = YoutubeAPI.player(video_id: video_id, params: "", client_config: client_config)
 
-  if player_response["playabilityStatus"]?.try &.["status"]?.try &.as_s != "OK"
-    reason = player_response["playabilityStatus"]["errorScreen"]?.try &.["playerErrorMessageRenderer"]?.try &.["subreason"]?.try { |s|
-      s["simpleText"]?.try &.as_s || s["runs"].as_a.map { |r| r["text"] }.join("")
-    } || player_response["playabilityStatus"]["reason"].as_s
+  if player_response.dig?("playabilityStatus", "status").try &.as_s != "OK"
+    subreason = player_response.dig?("playabilityStatus", "errorScreen", "playerErrorMessageRenderer", "subreason")
+    reason = subreason.try &.[]?("simpleText").try &.as_s
+    reason ||= subreason.try &.[]("runs").as_a.map(&.[]("text")).join("")
+    reason ||= player_response.dig("playabilityStatus", "reason").as_s
     params["reason"] = JSON::Any.new(reason)
+    return params
   end
 
   params["shortDescription"] = player_response.dig?("videoDetails", "shortDescription") || JSON::Any.new(nil)
@@ -928,11 +930,8 @@ def extract_video_info(video_id : String, proxy_region : String? = nil, context_
   raise BrokenTubeException.new("twoColumnWatchNextResults") if !main_results
 
   primary_results = main_results.dig?("results", "results", "contents")
-  secondary_results = main_results
-    .dig?("secondaryResults", "secondaryResults", "results")
 
   raise BrokenTubeException.new("results") if !primary_results
-  raise BrokenTubeException.new("secondaryResults") if !secondary_results
 
   video_primary_renderer = primary_results
     .as_a.find(&.["videoPrimaryInfoRenderer"]?)
@@ -952,7 +951,9 @@ def extract_video_info(video_id : String, proxy_region : String? = nil, context_
   related = [] of JSON::Any
 
   # Parse "compactVideoRenderer" items (under secondary results)
-  secondary_results.as_a.each do |element|
+  secondary_results = main_results
+    .dig?("secondaryResults", "secondaryResults", "results")
+  secondary_results.try &.as_a.each do |element|
     if item = element["compactVideoRenderer"]?
       related_video = parse_related_video(item)
       related << JSON::Any.new(related_video) if related_video
@@ -1119,7 +1120,9 @@ def fetch_video(id, region)
     info = embed_info if !embed_info["reason"]?
   end
 
-  raise InfoException.new(info["reason"]?.try &.as_s || "") if !info["videoDetails"]?
+  if reason = info["reason"]?
+    raise InfoException.new(reason.as_s || "")
+  end
 
   video = Video.new({
     id:      id,