fix: correct specials affecting availability status (#4092)

* fix: remove specials affecting availability status

* refactor: add comments for scanner

Author: OwsleyJr

server/lib/scanners/baseScanner.ts

@@ -324,19 +324,25 @@ class BaseScanner<T> {
         }
       }
 
+      // We want to skip specials when checking if a show is available
       const isAllStandardSeasons =
         seasons.length &&
-        seasons.every(
-          (season) =>
-            season.episodes === season.totalEpisodes && season.episodes > 0
-        );
+        seasons
+          .filter((season) => season.seasonNumber !== 0)
+          .every(
+            (season) =>
+              season.episodes === season.totalEpisodes && season.episodes > 0
+          );
 
       const isAll4kSeasons =
         seasons.length &&
-        seasons.every(
-          (season) =>
-            season.episodes4k === season.totalEpisodes && season.episodes4k > 0
-        );
+        seasons
+          .filter((season) => season.seasonNumber !== 0)
+          .every(
+            (season) =>
+              season.episodes4k === season.totalEpisodes &&
+              season.episodes4k > 0
+          );
 
       if (media) {
         media.seasons = [...media.seasons, ...newSeasons];
@@ -398,15 +404,20 @@ class BaseScanner<T> {
         }
 
         // If the show is already available, and there are no new seasons, dont adjust
-        // the status
+        // the status. Skip specials when performing availability check
         const shouldStayAvailable =
           media.status === MediaStatus.AVAILABLE &&
-          newSeasons.filter((season) => season.status !== MediaStatus.UNKNOWN)
-            .length === 0;
+          newSeasons.filter(
+            (season) =>
+              season.status !== MediaStatus.UNKNOWN && season.seasonNumber !== 0
+          ).length === 0;
         const shouldStayAvailable4k =
           media.status4k === MediaStatus.AVAILABLE &&
-          newSeasons.filter((season) => season.status4k !== MediaStatus.UNKNOWN)
-            .length === 0;
+          newSeasons.filter(
+            (season) =>
+              season.status4k !== MediaStatus.UNKNOWN &&
+              season.seasonNumber !== 0
+          ).length === 0;
 
         media.status =
           isAllStandardSeasons || shouldStayAvailable